Android studio 编写一个登录页面，并且具有注册功能

登录与注册

• 功能要求
  
• 具体实现
  
• 
  
  
  
  • 初步思路
    
  • 涉及的代码文件
    
  • 实现效果
    
    
  
• 代码文件
  
• 
  
  
  
  • 1.登录界面——MainActivity.java ：
    
  • 2.注册界面——Register.java
    
  • 3.欢迎界面——Welcome.java
    
  • 4.数据库——Mysql.java
    
  
  

功能要求

1、创建登录界面，点击注册按钮，弹出注册窗口。
2、创建注册窗口，输入用户名和密码，在SQLite中存储用户名和密码。
3、注册成功，跳转到登录界面，进行登录。
4、注册成功，把用户名和密码保存到SharedPreferences中，登录时自动填充用户名和密码。
具体实现

初步思路

          登录页面具有两个输入框和两个按键，输入框分别用于获取用户名和密码，按键分为登录按键和注册按键，分别跳往不同的页面。登陆成功后，进入到欢迎界面。注册跳转到注册页面，注册成功后，将数据存储到SharedPreferences和数据中，返回登录页面将SharedPreferences中的数据填充到输入框中。
涉及的代码文件

• MainActivity.java ：主界面
  
• Mysql.java：利用sqlite的SQLiteOpenHelper类创建数据库
  
• Register.java：注册页面
  
• Welcome.java:登陆成功后的欢迎界面:
  
• activity_main.xml:登录页面的布局文件
  
• activity_register.xml:注册页面的布局文件
  
• activity_welcome.xml:欢迎页面的布局文件
  一般在Android studio 中创建Activity都会自动在AndroidManifest.xml中好，本次代码中也不需要对AndroidManifest.xml做任何更改。
  

实现效果

1登录页面：
       这是我之前注册过后的账户，所以点击进去就自动填充好了信息。

2.注册页面：
       注册页面写的非常简略，如果想实现更多的效果可以网上查查，也可以参照下我上一篇文章中的注册页面。
编写一个简单的andriod注册页面，并跳转后显示注册信息

3.注册成功后：
       注册成功后会自动跳转到登录页面，并且填充信息。

4.登录成功后：
       登陆成功后会将用户名取出来，并显示欢迎。

代码文件

1.登录界面——MainActivity.java ：

       这里登录比对数据的时候，我采用的方法是从数据库中查询与输入的用户名、密码相同的记录，若记录存在则登陆成功。不存在则提示用户用户名或密码输入错误。

1. package com.example.test06;
3. import androidx.appcompat.app.AppCompatActivity;
5. import android.content.Intent;
6. import android.content.SharedPreferences;
7. import android.database.Cursor;
8. import android.database.sqlite.SQLiteDatabase;
9. import android.os.Bundle;
10. import android.view.View;
11. import android.widget.Button;
12. import android.widget.EditText;
13. import android.widget.Toast;
15. public class MainActivity extends AppCompatActivity {
16. <?xml version="1.0" encoding="utf-8"?>
17. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
18.     xmlns:app="http://schemas.android.com/apk/res-auto"
19.     xmlns:tools="http://schemas.android.com/tools"
20.     android:layout_width="match_parent"
21.     android:layout_height="match_parent"
22.     tools:context=".Welcome">
23.     <TextView
24.         android:id="@+id/mainword"
25.         android:layout_width="fill_parent"
26.         android:layout_height="fill_parent"
27.         android:gravity="center"
28.         android:textSize="22dp"
29.         tools:ignore="MissingConstraints" />
30. </androidx.constraintlayout.widget.ConstraintLayout>EditText name,pwd;
31. <?xml version="1.0" encoding="utf-8"?>
32. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
33.     xmlns:app="http://schemas.android.com/apk/res-auto"
34.     xmlns:tools="http://schemas.android.com/tools"
35.     android:layout_width="match_parent"
36.     android:layout_height="match_parent"
37.     tools:context=".Welcome">
38.     <TextView
39.         android:id="@+id/mainword"
40.         android:layout_width="fill_parent"
41.         android:layout_height="fill_parent"
42.         android:gravity="center"
43.         android:textSize="22dp"
44.         tools:ignore="MissingConstraints" />
45. </androidx.constraintlayout.widget.ConstraintLayout>Button btnlogin,btnreg;
46. <?xml version="1.0" encoding="utf-8"?>
47. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
48.     xmlns:app="http://schemas.android.com/apk/res-auto"
49.     xmlns:tools="http://schemas.android.com/tools"
50.     android:layout_width="match_parent"
51.     android:layout_height="match_parent"
52.     tools:context=".Welcome">
53.     <TextView
54.         android:id="@+id/mainword"
55.         android:layout_width="fill_parent"
56.         android:layout_height="fill_parent"
57.         android:gravity="center"
58.         android:textSize="22dp"
59.         tools:ignore="MissingConstraints" />
60. </androidx.constraintlayout.widget.ConstraintLayout>Mysql mysql;
61. <?xml version="1.0" encoding="utf-8"?>
62. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
63.     xmlns:app="http://schemas.android.com/apk/res-auto"
64.     xmlns:tools="http://schemas.android.com/tools"
65.     android:layout_width="match_parent"
66.     android:layout_height="match_parent"
67.     tools:context=".Welcome">
68.     <TextView
69.         android:id="@+id/mainword"
70.         android:layout_width="fill_parent"
71.         android:layout_height="fill_parent"
72.         android:gravity="center"
73.         android:textSize="22dp"
74.         tools:ignore="MissingConstraints" />
75. </androidx.constraintlayout.widget.ConstraintLayout>SQLiteDatabase db;
76. <?xml version="1.0" encoding="utf-8"?>
77. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
78.     xmlns:app="http://schemas.android.com/apk/res-auto"
79.     xmlns:tools="http://schemas.android.com/tools"
80.     android:layout_width="match_parent"
81.     android:layout_height="match_parent"
82.     tools:context=".Welcome">
83.     <TextView
84.         android:id="@+id/mainword"
85.         android:layout_width="fill_parent"
86.         android:layout_height="fill_parent"
87.         android:gravity="center"
88.         android:textSize="22dp"
89.         tools:ignore="MissingConstraints" />
90. </androidx.constraintlayout.widget.ConstraintLayout>SharedPreferences sp1,sp2;
91. <?xml version="1.0" encoding="utf-8"?>
92. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
93.     xmlns:app="http://schemas.android.com/apk/res-auto"
94.     xmlns:tools="http://schemas.android.com/tools"
95.     android:layout_width="match_parent"
96.     android:layout_height="match_parent"
97.     tools:context=".Welcome">
98.     <TextView
99.         android:id="@+id/mainword"
100.         android:layout_width="fill_parent"
101.         android:layout_height="fill_parent"
102.         android:gravity="center"
103.         android:textSize="22dp"
104.         tools:ignore="MissingConstraints" />
105. </androidx.constraintlayout.widget.ConstraintLayout>@Override
106. <?xml version="1.0" encoding="utf-8"?>
107. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
108.     xmlns:app="http://schemas.android.com/apk/res-auto"
109.     xmlns:tools="http://schemas.android.com/tools"
110.     android:layout_width="match_parent"
111.     android:layout_height="match_parent"
112.     tools:context=".Welcome">
113.     <TextView
114.         android:id="@+id/mainword"
115.         android:layout_width="fill_parent"
116.         android:layout_height="fill_parent"
117.         android:gravity="center"
118.         android:textSize="22dp"
119.         tools:ignore="MissingConstraints" />
120. </androidx.constraintlayout.widget.ConstraintLayout>protected void onCreate(Bundle savedInstanceState) {
121. <?xml version="1.0" encoding="utf-8"?>
122. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
123.     xmlns:app="http://schemas.android.com/apk/res-auto"
124.     xmlns:tools="http://schemas.android.com/tools"
125.     android:layout_width="match_parent"
126.     android:layout_height="match_parent"
127.     tools:context=".Welcome">
128.     <TextView
129.         android:id="@+id/mainword"
130.         android:layout_width="fill_parent"
131.         android:layout_height="fill_parent"
132.         android:gravity="center"
133.         android:textSize="22dp"
134.         tools:ignore="MissingConstraints" />
135. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
136. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
137.     xmlns:app="http://schemas.android.com/apk/res-auto"
138.     xmlns:tools="http://schemas.android.com/tools"
139.     android:layout_width="match_parent"
140.     android:layout_height="match_parent"
141.     tools:context=".Welcome">
142.     <TextView
143.         android:id="@+id/mainword"
144.         android:layout_width="fill_parent"
145.         android:layout_height="fill_parent"
146.         android:gravity="center"
147.         android:textSize="22dp"
148.         tools:ignore="MissingConstraints" />
149. </androidx.constraintlayout.widget.ConstraintLayout>super.onCreate(savedInstanceState);
150. <?xml version="1.0" encoding="utf-8"?>
151. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
152.     xmlns:app="http://schemas.android.com/apk/res-auto"
153.     xmlns:tools="http://schemas.android.com/tools"
154.     android:layout_width="match_parent"
155.     android:layout_height="match_parent"
156.     tools:context=".Welcome">
157.     <TextView
158.         android:id="@+id/mainword"
159.         android:layout_width="fill_parent"
160.         android:layout_height="fill_parent"
161.         android:gravity="center"
162.         android:textSize="22dp"
163.         tools:ignore="MissingConstraints" />
164. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
165. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
166.     xmlns:app="http://schemas.android.com/apk/res-auto"
167.     xmlns:tools="http://schemas.android.com/tools"
168.     android:layout_width="match_parent"
169.     android:layout_height="match_parent"
170.     tools:context=".Welcome">
171.     <TextView
172.         android:id="@+id/mainword"
173.         android:layout_width="fill_parent"
174.         android:layout_height="fill_parent"
175.         android:gravity="center"
176.         android:textSize="22dp"
177.         tools:ignore="MissingConstraints" />
178. </androidx.constraintlayout.widget.ConstraintLayout>setContentView(R.layout.activity_main);
179. <?xml version="1.0" encoding="utf-8"?>
180. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
181.     xmlns:app="http://schemas.android.com/apk/res-auto"
182.     xmlns:tools="http://schemas.android.com/tools"
183.     android:layout_width="match_parent"
184.     android:layout_height="match_parent"
185.     tools:context=".Welcome">
186.     <TextView
187.         android:id="@+id/mainword"
188.         android:layout_width="fill_parent"
189.         android:layout_height="fill_parent"
190.         android:gravity="center"
191.         android:textSize="22dp"
192.         tools:ignore="MissingConstraints" />
193. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
194. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
195.     xmlns:app="http://schemas.android.com/apk/res-auto"
196.     xmlns:tools="http://schemas.android.com/tools"
197.     android:layout_width="match_parent"
198.     android:layout_height="match_parent"
199.     tools:context=".Welcome">
200.     <TextView
201.         android:id="@+id/mainword"
202.         android:layout_width="fill_parent"
203.         android:layout_height="fill_parent"
204.         android:gravity="center"
205.         android:textSize="22dp"
206.         tools:ignore="MissingConstraints" />
207. </androidx.constraintlayout.widget.ConstraintLayout>name = this.findViewById(R.id.name);<?xml version="1.0" encoding="utf-8"?>
208. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
209.     xmlns:app="http://schemas.android.com/apk/res-auto"
210.     xmlns:tools="http://schemas.android.com/tools"
211.     android:layout_width="match_parent"
212.     android:layout_height="match_parent"
213.     tools:context=".Welcome">
214.     <TextView
215.         android:id="@+id/mainword"
216.         android:layout_width="fill_parent"
217.         android:layout_height="fill_parent"
218.         android:gravity="center"
219.         android:textSize="22dp"
220.         tools:ignore="MissingConstraints" />
221. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
222. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
223.     xmlns:app="http://schemas.android.com/apk/res-auto"
224.     xmlns:tools="http://schemas.android.com/tools"
225.     android:layout_width="match_parent"
226.     android:layout_height="match_parent"
227.     tools:context=".Welcome">
228.     <TextView
229.         android:id="@+id/mainword"
230.         android:layout_width="fill_parent"
231.         android:layout_height="fill_parent"
232.         android:gravity="center"
233.         android:textSize="22dp"
234.         tools:ignore="MissingConstraints" />
235. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
236. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
237.     xmlns:app="http://schemas.android.com/apk/res-auto"
238.     xmlns:tools="http://schemas.android.com/tools"
239.     android:layout_width="match_parent"
240.     android:layout_height="match_parent"
241.     tools:context=".Welcome">
242.     <TextView
243.         android:id="@+id/mainword"
244.         android:layout_width="fill_parent"
245.         android:layout_height="fill_parent"
246.         android:gravity="center"
247.         android:textSize="22dp"
248.         tools:ignore="MissingConstraints" />
249. </androidx.constraintlayout.widget.ConstraintLayout>//用户名输入框
250. <?xml version="1.0" encoding="utf-8"?>
251. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
252.     xmlns:app="http://schemas.android.com/apk/res-auto"
253.     xmlns:tools="http://schemas.android.com/tools"
254.     android:layout_width="match_parent"
255.     android:layout_height="match_parent"
256.     tools:context=".Welcome">
257.     <TextView
258.         android:id="@+id/mainword"
259.         android:layout_width="fill_parent"
260.         android:layout_height="fill_parent"
261.         android:gravity="center"
262.         android:textSize="22dp"
263.         tools:ignore="MissingConstraints" />
264. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
265. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
266.     xmlns:app="http://schemas.android.com/apk/res-auto"
267.     xmlns:tools="http://schemas.android.com/tools"
268.     android:layout_width="match_parent"
269.     android:layout_height="match_parent"
270.     tools:context=".Welcome">
271.     <TextView
272.         android:id="@+id/mainword"
273.         android:layout_width="fill_parent"
274.         android:layout_height="fill_parent"
275.         android:gravity="center"
276.         android:textSize="22dp"
277.         tools:ignore="MissingConstraints" />
278. </androidx.constraintlayout.widget.ConstraintLayout>pwd = this.findViewById(R.id.pwd);<?xml version="1.0" encoding="utf-8"?>
279. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
280.     xmlns:app="http://schemas.android.com/apk/res-auto"
281.     xmlns:tools="http://schemas.android.com/tools"
282.     android:layout_width="match_parent"
283.     android:layout_height="match_parent"
284.     tools:context=".Welcome">
285.     <TextView
286.         android:id="@+id/mainword"
287.         android:layout_width="fill_parent"
288.         android:layout_height="fill_parent"
289.         android:gravity="center"
290.         android:textSize="22dp"
291.         tools:ignore="MissingConstraints" />
292. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
293. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
294.     xmlns:app="http://schemas.android.com/apk/res-auto"
295.     xmlns:tools="http://schemas.android.com/tools"
296.     android:layout_width="match_parent"
297.     android:layout_height="match_parent"
298.     tools:context=".Welcome">
299.     <TextView
300.         android:id="@+id/mainword"
301.         android:layout_width="fill_parent"
302.         android:layout_height="fill_parent"
303.         android:gravity="center"
304.         android:textSize="22dp"
305.         tools:ignore="MissingConstraints" />
306. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
307. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
308.     xmlns:app="http://schemas.android.com/apk/res-auto"
309.     xmlns:tools="http://schemas.android.com/tools"
310.     android:layout_width="match_parent"
311.     android:layout_height="match_parent"
312.     tools:context=".Welcome">
313.     <TextView
314.         android:id="@+id/mainword"
315.         android:layout_width="fill_parent"
316.         android:layout_height="fill_parent"
317.         android:gravity="center"
318.         android:textSize="22dp"
319.         tools:ignore="MissingConstraints" />
320. </androidx.constraintlayout.widget.ConstraintLayout>  //密码输入框
321. <?xml version="1.0" encoding="utf-8"?>
322. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
323.     xmlns:app="http://schemas.android.com/apk/res-auto"
324.     xmlns:tools="http://schemas.android.com/tools"
325.     android:layout_width="match_parent"
326.     android:layout_height="match_parent"
327.     tools:context=".Welcome">
328.     <TextView
329.         android:id="@+id/mainword"
330.         android:layout_width="fill_parent"
331.         android:layout_height="fill_parent"
332.         android:gravity="center"
333.         android:textSize="22dp"
334.         tools:ignore="MissingConstraints" />
335. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
336. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
337.     xmlns:app="http://schemas.android.com/apk/res-auto"
338.     xmlns:tools="http://schemas.android.com/tools"
339.     android:layout_width="match_parent"
340.     android:layout_height="match_parent"
341.     tools:context=".Welcome">
342.     <TextView
343.         android:id="@+id/mainword"
344.         android:layout_width="fill_parent"
345.         android:layout_height="fill_parent"
346.         android:gravity="center"
347.         android:textSize="22dp"
348.         tools:ignore="MissingConstraints" />
349. </androidx.constraintlayout.widget.ConstraintLayout>btnlogin = this.findViewById(R.id.login);<?xml version="1.0" encoding="utf-8"?>
350. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
351.     xmlns:app="http://schemas.android.com/apk/res-auto"
352.     xmlns:tools="http://schemas.android.com/tools"
353.     android:layout_width="match_parent"
354.     android:layout_height="match_parent"
355.     tools:context=".Welcome">
356.     <TextView
357.         android:id="@+id/mainword"
358.         android:layout_width="fill_parent"
359.         android:layout_height="fill_parent"
360.         android:gravity="center"
361.         android:textSize="22dp"
362.         tools:ignore="MissingConstraints" />
363. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
364. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
365.     xmlns:app="http://schemas.android.com/apk/res-auto"
366.     xmlns:tools="http://schemas.android.com/tools"
367.     android:layout_width="match_parent"
368.     android:layout_height="match_parent"
369.     tools:context=".Welcome">
370.     <TextView
371.         android:id="@+id/mainword"
372.         android:layout_width="fill_parent"
373.         android:layout_height="fill_parent"
374.         android:gravity="center"
375.         android:textSize="22dp"
376.         tools:ignore="MissingConstraints" />
377. </androidx.constraintlayout.widget.ConstraintLayout> //登录按钮
378. <?xml version="1.0" encoding="utf-8"?>
379. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
380.     xmlns:app="http://schemas.android.com/apk/res-auto"
381.     xmlns:tools="http://schemas.android.com/tools"
382.     android:layout_width="match_parent"
383.     android:layout_height="match_parent"
384.     tools:context=".Welcome">
385.     <TextView
386.         android:id="@+id/mainword"
387.         android:layout_width="fill_parent"
388.         android:layout_height="fill_parent"
389.         android:gravity="center"
390.         android:textSize="22dp"
391.         tools:ignore="MissingConstraints" />
392. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
393. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
394.     xmlns:app="http://schemas.android.com/apk/res-auto"
395.     xmlns:tools="http://schemas.android.com/tools"
396.     android:layout_width="match_parent"
397.     android:layout_height="match_parent"
398.     tools:context=".Welcome">
399.     <TextView
400.         android:id="@+id/mainword"
401.         android:layout_width="fill_parent"
402.         android:layout_height="fill_parent"
403.         android:gravity="center"
404.         android:textSize="22dp"
405.         tools:ignore="MissingConstraints" />
406. </androidx.constraintlayout.widget.ConstraintLayout>btnreg = this.findViewById(R.id.reg);<?xml version="1.0" encoding="utf-8"?>
407. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
408.     xmlns:app="http://schemas.android.com/apk/res-auto"
409.     xmlns:tools="http://schemas.android.com/tools"
410.     android:layout_width="match_parent"
411.     android:layout_height="match_parent"
412.     tools:context=".Welcome">
413.     <TextView
414.         android:id="@+id/mainword"
415.         android:layout_width="fill_parent"
416.         android:layout_height="fill_parent"
417.         android:gravity="center"
418.         android:textSize="22dp"
419.         tools:ignore="MissingConstraints" />
420. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
421. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
422.     xmlns:app="http://schemas.android.com/apk/res-auto"
423.     xmlns:tools="http://schemas.android.com/tools"
424.     android:layout_width="match_parent"
425.     android:layout_height="match_parent"
426.     tools:context=".Welcome">
427.     <TextView
428.         android:id="@+id/mainword"
429.         android:layout_width="fill_parent"
430.         android:layout_height="fill_parent"
431.         android:gravity="center"
432.         android:textSize="22dp"
433.         tools:ignore="MissingConstraints" />
434. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
435. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
436.     xmlns:app="http://schemas.android.com/apk/res-auto"
437.     xmlns:tools="http://schemas.android.com/tools"
438.     android:layout_width="match_parent"
439.     android:layout_height="match_parent"
440.     tools:context=".Welcome">
441.     <TextView
442.         android:id="@+id/mainword"
443.         android:layout_width="fill_parent"
444.         android:layout_height="fill_parent"
445.         android:gravity="center"
446.         android:textSize="22dp"
447.         tools:ignore="MissingConstraints" />
448. </androidx.constraintlayout.widget.ConstraintLayout>   //注册按钮
449. <?xml version="1.0" encoding="utf-8"?>
450. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
451.     xmlns:app="http://schemas.android.com/apk/res-auto"
452.     xmlns:tools="http://schemas.android.com/tools"
453.     android:layout_width="match_parent"
454.     android:layout_height="match_parent"
455.     tools:context=".Welcome">
456.     <TextView
457.         android:id="@+id/mainword"
458.         android:layout_width="fill_parent"
459.         android:layout_height="fill_parent"
460.         android:gravity="center"
461.         android:textSize="22dp"
462.         tools:ignore="MissingConstraints" />
463. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
464. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
465.     xmlns:app="http://schemas.android.com/apk/res-auto"
466.     xmlns:tools="http://schemas.android.com/tools"
467.     android:layout_width="match_parent"
468.     android:layout_height="match_parent"
469.     tools:context=".Welcome">
470.     <TextView
471.         android:id="@+id/mainword"
472.         android:layout_width="fill_parent"
473.         android:layout_height="fill_parent"
474.         android:gravity="center"
475.         android:textSize="22dp"
476.         tools:ignore="MissingConstraints" />
477. </androidx.constraintlayout.widget.ConstraintLayout>sp1 =  this.getSharedPreferences("useinfo",this.MODE_PRIVATE);
478. <?xml version="1.0" encoding="utf-8"?>
479. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
480.     xmlns:app="http://schemas.android.com/apk/res-auto"
481.     xmlns:tools="http://schemas.android.com/tools"
482.     android:layout_width="match_parent"
483.     android:layout_height="match_parent"
484.     tools:context=".Welcome">
485.     <TextView
486.         android:id="@+id/mainword"
487.         android:layout_width="fill_parent"
488.         android:layout_height="fill_parent"
489.         android:gravity="center"
490.         android:textSize="22dp"
491.         tools:ignore="MissingConstraints" />
492. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
493. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
494.     xmlns:app="http://schemas.android.com/apk/res-auto"
495.     xmlns:tools="http://schemas.android.com/tools"
496.     android:layout_width="match_parent"
497.     android:layout_height="match_parent"
498.     tools:context=".Welcome">
499.     <TextView
500.         android:id="@+id/mainword"
501.         android:layout_width="fill_parent"
502.         android:layout_height="fill_parent"
503.         android:gravity="center"
504.         android:textSize="22dp"
505.         tools:ignore="MissingConstraints" />
506. </androidx.constraintlayout.widget.ConstraintLayout>sp2 = this.getSharedPreferences("username",this.MODE_PRIVATE);
508. <?xml version="1.0" encoding="utf-8"?>
509. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
510.     xmlns:app="http://schemas.android.com/apk/res-auto"
511.     xmlns:tools="http://schemas.android.com/tools"
512.     android:layout_width="match_parent"
513.     android:layout_height="match_parent"
514.     tools:context=".Welcome">
515.     <TextView
516.         android:id="@+id/mainword"
517.         android:layout_width="fill_parent"
518.         android:layout_height="fill_parent"
519.         android:gravity="center"
520.         android:textSize="22dp"
521.         tools:ignore="MissingConstraints" />
522. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
523. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
524.     xmlns:app="http://schemas.android.com/apk/res-auto"
525.     xmlns:tools="http://schemas.android.com/tools"
526.     android:layout_width="match_parent"
527.     android:layout_height="match_parent"
528.     tools:context=".Welcome">
529.     <TextView
530.         android:id="@+id/mainword"
531.         android:layout_width="fill_parent"
532.         android:layout_height="fill_parent"
533.         android:gravity="center"
534.         android:textSize="22dp"
535.         tools:ignore="MissingConstraints" />
536. </androidx.constraintlayout.widget.ConstraintLayout>name.setText(sp1.getString("usname",null));
537. <?xml version="1.0" encoding="utf-8"?>
538. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
539.     xmlns:app="http://schemas.android.com/apk/res-auto"
540.     xmlns:tools="http://schemas.android.com/tools"
541.     android:layout_width="match_parent"
542.     android:layout_height="match_parent"
543.     tools:context=".Welcome">
544.     <TextView
545.         android:id="@+id/mainword"
546.         android:layout_width="fill_parent"
547.         android:layout_height="fill_parent"
548.         android:gravity="center"
549.         android:textSize="22dp"
550.         tools:ignore="MissingConstraints" />
551. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
552. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
553.     xmlns:app="http://schemas.android.com/apk/res-auto"
554.     xmlns:tools="http://schemas.android.com/tools"
555.     android:layout_width="match_parent"
556.     android:layout_height="match_parent"
557.     tools:context=".Welcome">
558.     <TextView
559.         android:id="@+id/mainword"
560.         android:layout_width="fill_parent"
561.         android:layout_height="fill_parent"
562.         android:gravity="center"
563.         android:textSize="22dp"
564.         tools:ignore="MissingConstraints" />
565. </androidx.constraintlayout.widget.ConstraintLayout>pwd.setText(sp1.getString("uspwd",null));
566. <?xml version="1.0" encoding="utf-8"?>
567. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
568.     xmlns:app="http://schemas.android.com/apk/res-auto"
569.     xmlns:tools="http://schemas.android.com/tools"
570.     android:layout_width="match_parent"
571.     android:layout_height="match_parent"
572.     tools:context=".Welcome">
573.     <TextView
574.         android:id="@+id/mainword"
575.         android:layout_width="fill_parent"
576.         android:layout_height="fill_parent"
577.         android:gravity="center"
578.         android:textSize="22dp"
579.         tools:ignore="MissingConstraints" />
580. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
581. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
582.     xmlns:app="http://schemas.android.com/apk/res-auto"
583.     xmlns:tools="http://schemas.android.com/tools"
584.     android:layout_width="match_parent"
585.     android:layout_height="match_parent"
586.     tools:context=".Welcome">
587.     <TextView
588.         android:id="@+id/mainword"
589.         android:layout_width="fill_parent"
590.         android:layout_height="fill_parent"
591.         android:gravity="center"
592.         android:textSize="22dp"
593.         tools:ignore="MissingConstraints" />
594. </androidx.constraintlayout.widget.ConstraintLayout>mysql = new Mysql(this,"Userinfo",null,1);<?xml version="1.0" encoding="utf-8"?>
595. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
596.     xmlns:app="http://schemas.android.com/apk/res-auto"
597.     xmlns:tools="http://schemas.android.com/tools"
598.     android:layout_width="match_parent"
599.     android:layout_height="match_parent"
600.     tools:context=".Welcome">
601.     <TextView
602.         android:id="@+id/mainword"
603.         android:layout_width="fill_parent"
604.         android:layout_height="fill_parent"
605.         android:gravity="center"
606.         android:textSize="22dp"
607.         tools:ignore="MissingConstraints" />
608. </androidx.constraintlayout.widget.ConstraintLayout>  //建数据库或者取数据库
609. <?xml version="1.0" encoding="utf-8"?>
610. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
611.     xmlns:app="http://schemas.android.com/apk/res-auto"
612.     xmlns:tools="http://schemas.android.com/tools"
613.     android:layout_width="match_parent"
614.     android:layout_height="match_parent"
615.     tools:context=".Welcome">
616.     <TextView
617.         android:id="@+id/mainword"
618.         android:layout_width="fill_parent"
619.         android:layout_height="fill_parent"
620.         android:gravity="center"
621.         android:textSize="22dp"
622.         tools:ignore="MissingConstraints" />
623. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
624. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
625.     xmlns:app="http://schemas.android.com/apk/res-auto"
626.     xmlns:tools="http://schemas.android.com/tools"
627.     android:layout_width="match_parent"
628.     android:layout_height="match_parent"
629.     tools:context=".Welcome">
630.     <TextView
631.         android:id="@+id/mainword"
632.         android:layout_width="fill_parent"
633.         android:layout_height="fill_parent"
634.         android:gravity="center"
635.         android:textSize="22dp"
636.         tools:ignore="MissingConstraints" />
637. </androidx.constraintlayout.widget.ConstraintLayout>db = mysql.getReadableDatabase();
638. <?xml version="1.0" encoding="utf-8"?>
639. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
640.     xmlns:app="http://schemas.android.com/apk/res-auto"
641.     xmlns:tools="http://schemas.android.com/tools"
642.     android:layout_width="match_parent"
643.     android:layout_height="match_parent"
644.     tools:context=".Welcome">
645.     <TextView
646.         android:id="@+id/mainword"
647.         android:layout_width="fill_parent"
648.         android:layout_height="fill_parent"
649.         android:gravity="center"
650.         android:textSize="22dp"
651.         tools:ignore="MissingConstraints" />
652. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
653. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
654.     xmlns:app="http://schemas.android.com/apk/res-auto"
655.     xmlns:tools="http://schemas.android.com/tools"
656.     android:layout_width="match_parent"
657.     android:layout_height="match_parent"
658.     tools:context=".Welcome">
659.     <TextView
660.         android:id="@+id/mainword"
661.         android:layout_width="fill_parent"
662.         android:layout_height="fill_parent"
663.         android:gravity="center"
664.         android:textSize="22dp"
665.         tools:ignore="MissingConstraints" />
666. </androidx.constraintlayout.widget.ConstraintLayout>btnlogin.setOnClickListener(new View.OnClickListener() {<?xml version="1.0" encoding="utf-8"?>
667. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
668.     xmlns:app="http://schemas.android.com/apk/res-auto"
669.     xmlns:tools="http://schemas.android.com/tools"
670.     android:layout_width="match_parent"
671.     android:layout_height="match_parent"
672.     tools:context=".Welcome">
673.     <TextView
674.         android:id="@+id/mainword"
675.         android:layout_width="fill_parent"
676.         android:layout_height="fill_parent"
677.         android:gravity="center"
678.         android:textSize="22dp"
679.         tools:ignore="MissingConstraints" />
680. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
681. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
682.     xmlns:app="http://schemas.android.com/apk/res-auto"
683.     xmlns:tools="http://schemas.android.com/tools"
684.     android:layout_width="match_parent"
685.     android:layout_height="match_parent"
686.     tools:context=".Welcome">
687.     <TextView
688.         android:id="@+id/mainword"
689.         android:layout_width="fill_parent"
690.         android:layout_height="fill_parent"
691.         android:gravity="center"
692.         android:textSize="22dp"
693.         tools:ignore="MissingConstraints" />
694. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
695. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
696.     xmlns:app="http://schemas.android.com/apk/res-auto"
697.     xmlns:tools="http://schemas.android.com/tools"
698.     android:layout_width="match_parent"
699.     android:layout_height="match_parent"
700.     tools:context=".Welcome">
701.     <TextView
702.         android:id="@+id/mainword"
703.         android:layout_width="fill_parent"
704.         android:layout_height="fill_parent"
705.         android:gravity="center"
706.         android:textSize="22dp"
707.         tools:ignore="MissingConstraints" />
708. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
709. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
710.     xmlns:app="http://schemas.android.com/apk/res-auto"
711.     xmlns:tools="http://schemas.android.com/tools"
712.     android:layout_width="match_parent"
713.     android:layout_height="match_parent"
714.     tools:context=".Welcome">
715.     <TextView
716.         android:id="@+id/mainword"
717.         android:layout_width="fill_parent"
718.         android:layout_height="fill_parent"
719.         android:gravity="center"
720.         android:textSize="22dp"
721.         tools:ignore="MissingConstraints" />
722. </androidx.constraintlayout.widget.ConstraintLayout>//登录事件
723. <?xml version="1.0" encoding="utf-8"?>
724. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
725.     xmlns:app="http://schemas.android.com/apk/res-auto"
726.     xmlns:tools="http://schemas.android.com/tools"
727.     android:layout_width="match_parent"
728.     android:layout_height="match_parent"
729.     tools:context=".Welcome">
730.     <TextView
731.         android:id="@+id/mainword"
732.         android:layout_width="fill_parent"
733.         android:layout_height="fill_parent"
734.         android:gravity="center"
735.         android:textSize="22dp"
736.         tools:ignore="MissingConstraints" />
737. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
738. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
739.     xmlns:app="http://schemas.android.com/apk/res-auto"
740.     xmlns:tools="http://schemas.android.com/tools"
741.     android:layout_width="match_parent"
742.     android:layout_height="match_parent"
743.     tools:context=".Welcome">
744.     <TextView
745.         android:id="@+id/mainword"
746.         android:layout_width="fill_parent"
747.         android:layout_height="fill_parent"
748.         android:gravity="center"
749.         android:textSize="22dp"
750.         tools:ignore="MissingConstraints" />
751. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
752. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
753.     xmlns:app="http://schemas.android.com/apk/res-auto"
754.     xmlns:tools="http://schemas.android.com/tools"
755.     android:layout_width="match_parent"
756.     android:layout_height="match_parent"
757.     tools:context=".Welcome">
758.     <TextView
759.         android:id="@+id/mainword"
760.         android:layout_width="fill_parent"
761.         android:layout_height="fill_parent"
762.         android:gravity="center"
763.         android:textSize="22dp"
764.         tools:ignore="MissingConstraints" />
765. </androidx.constraintlayout.widget.ConstraintLayout>@Override
766. <?xml version="1.0" encoding="utf-8"?>
767. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
768.     xmlns:app="http://schemas.android.com/apk/res-auto"
769.     xmlns:tools="http://schemas.android.com/tools"
770.     android:layout_width="match_parent"
771.     android:layout_height="match_parent"
772.     tools:context=".Welcome">
773.     <TextView
774.         android:id="@+id/mainword"
775.         android:layout_width="fill_parent"
776.         android:layout_height="fill_parent"
777.         android:gravity="center"
778.         android:textSize="22dp"
779.         tools:ignore="MissingConstraints" />
780. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
781. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
782.     xmlns:app="http://schemas.android.com/apk/res-auto"
783.     xmlns:tools="http://schemas.android.com/tools"
784.     android:layout_width="match_parent"
785.     android:layout_height="match_parent"
786.     tools:context=".Welcome">
787.     <TextView
788.         android:id="@+id/mainword"
789.         android:layout_width="fill_parent"
790.         android:layout_height="fill_parent"
791.         android:gravity="center"
792.         android:textSize="22dp"
793.         tools:ignore="MissingConstraints" />
794. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
795. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
796.     xmlns:app="http://schemas.android.com/apk/res-auto"
797.     xmlns:tools="http://schemas.android.com/tools"
798.     android:layout_width="match_parent"
799.     android:layout_height="match_parent"
800.     tools:context=".Welcome">
801.     <TextView
802.         android:id="@+id/mainword"
803.         android:layout_width="fill_parent"
804.         android:layout_height="fill_parent"
805.         android:gravity="center"
806.         android:textSize="22dp"
807.         tools:ignore="MissingConstraints" />
808. </androidx.constraintlayout.widget.ConstraintLayout>public void onClick(View v) {
809. <?xml version="1.0" encoding="utf-8"?>
810. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
811.     xmlns:app="http://schemas.android.com/apk/res-auto"
812.     xmlns:tools="http://schemas.android.com/tools"
813.     android:layout_width="match_parent"
814.     android:layout_height="match_parent"
815.     tools:context=".Welcome">
816.     <TextView
817.         android:id="@+id/mainword"
818.         android:layout_width="fill_parent"
819.         android:layout_height="fill_parent"
820.         android:gravity="center"
821.         android:textSize="22dp"
822.         tools:ignore="MissingConstraints" />
823. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
824. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
825.     xmlns:app="http://schemas.android.com/apk/res-auto"
826.     xmlns:tools="http://schemas.android.com/tools"
827.     android:layout_width="match_parent"
828.     android:layout_height="match_parent"
829.     tools:context=".Welcome">
830.     <TextView
831.         android:id="@+id/mainword"
832.         android:layout_width="fill_parent"
833.         android:layout_height="fill_parent"
834.         android:gravity="center"
835.         android:textSize="22dp"
836.         tools:ignore="MissingConstraints" />
837. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
838. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
839.     xmlns:app="http://schemas.android.com/apk/res-auto"
840.     xmlns:tools="http://schemas.android.com/tools"
841.     android:layout_width="match_parent"
842.     android:layout_height="match_parent"
843.     tools:context=".Welcome">
844.     <TextView
845.         android:id="@+id/mainword"
846.         android:layout_width="fill_parent"
847.         android:layout_height="fill_parent"
848.         android:gravity="center"
849.         android:textSize="22dp"
850.         tools:ignore="MissingConstraints" />
851. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
852. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
853.     xmlns:app="http://schemas.android.com/apk/res-auto"
854.     xmlns:tools="http://schemas.android.com/tools"
855.     android:layout_width="match_parent"
856.     android:layout_height="match_parent"
857.     tools:context=".Welcome">
858.     <TextView
859.         android:id="@+id/mainword"
860.         android:layout_width="fill_parent"
861.         android:layout_height="fill_parent"
862.         android:gravity="center"
863.         android:textSize="22dp"
864.         tools:ignore="MissingConstraints" />
865. </androidx.constraintlayout.widget.ConstraintLayout>String username = name.getText().toString();
866. <?xml version="1.0" encoding="utf-8"?>
867. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
868.     xmlns:app="http://schemas.android.com/apk/res-auto"
869.     xmlns:tools="http://schemas.android.com/tools"
870.     android:layout_width="match_parent"
871.     android:layout_height="match_parent"
872.     tools:context=".Welcome">
873.     <TextView
874.         android:id="@+id/mainword"
875.         android:layout_width="fill_parent"
876.         android:layout_height="fill_parent"
877.         android:gravity="center"
878.         android:textSize="22dp"
879.         tools:ignore="MissingConstraints" />
880. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
881. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
882.     xmlns:app="http://schemas.android.com/apk/res-auto"
883.     xmlns:tools="http://schemas.android.com/tools"
884.     android:layout_width="match_parent"
885.     android:layout_height="match_parent"
886.     tools:context=".Welcome">
887.     <TextView
888.         android:id="@+id/mainword"
889.         android:layout_width="fill_parent"
890.         android:layout_height="fill_parent"
891.         android:gravity="center"
892.         android:textSize="22dp"
893.         tools:ignore="MissingConstraints" />
894. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
895. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
896.     xmlns:app="http://schemas.android.com/apk/res-auto"
897.     xmlns:tools="http://schemas.android.com/tools"
898.     android:layout_width="match_parent"
899.     android:layout_height="match_parent"
900.     tools:context=".Welcome">
901.     <TextView
902.         android:id="@+id/mainword"
903.         android:layout_width="fill_parent"
904.         android:layout_height="fill_parent"
905.         android:gravity="center"
906.         android:textSize="22dp"
907.         tools:ignore="MissingConstraints" />
908. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
909. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
910.     xmlns:app="http://schemas.android.com/apk/res-auto"
911.     xmlns:tools="http://schemas.android.com/tools"
912.     android:layout_width="match_parent"
913.     android:layout_height="match_parent"
914.     tools:context=".Welcome">
915.     <TextView
916.         android:id="@+id/mainword"
917.         android:layout_width="fill_parent"
918.         android:layout_height="fill_parent"
919.         android:gravity="center"
920.         android:textSize="22dp"
921.         tools:ignore="MissingConstraints" />
922. </androidx.constraintlayout.widget.ConstraintLayout>String password = pwd.getText().toString();<?xml version="1.0" encoding="utf-8"?>
923. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
924.     xmlns:app="http://schemas.android.com/apk/res-auto"
925.     xmlns:tools="http://schemas.android.com/tools"
926.     android:layout_width="match_parent"
927.     android:layout_height="match_parent"
928.     tools:context=".Welcome">
929.     <TextView
930.         android:id="@+id/mainword"
931.         android:layout_width="fill_parent"
932.         android:layout_height="fill_parent"
933.         android:gravity="center"
934.         android:textSize="22dp"
935.         tools:ignore="MissingConstraints" />
936. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
937. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
938.     xmlns:app="http://schemas.android.com/apk/res-auto"
939.     xmlns:tools="http://schemas.android.com/tools"
940.     android:layout_width="match_parent"
941.     android:layout_height="match_parent"
942.     tools:context=".Welcome">
943.     <TextView
944.         android:id="@+id/mainword"
945.         android:layout_width="fill_parent"
946.         android:layout_height="fill_parent"
947.         android:gravity="center"
948.         android:textSize="22dp"
949.         tools:ignore="MissingConstraints" />
950. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
951. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
952.     xmlns:app="http://schemas.android.com/apk/res-auto"
953.     xmlns:tools="http://schemas.android.com/tools"
954.     android:layout_width="match_parent"
955.     android:layout_height="match_parent"
956.     tools:context=".Welcome">
957.     <TextView
958.         android:id="@+id/mainword"
959.         android:layout_width="fill_parent"
960.         android:layout_height="fill_parent"
961.         android:gravity="center"
962.         android:textSize="22dp"
963.         tools:ignore="MissingConstraints" />
964. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
965. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
966.     xmlns:app="http://schemas.android.com/apk/res-auto"
967.     xmlns:tools="http://schemas.android.com/tools"
968.     android:layout_width="match_parent"
969.     android:layout_height="match_parent"
970.     tools:context=".Welcome">
971.     <TextView
972.         android:id="@+id/mainword"
973.         android:layout_width="fill_parent"
974.         android:layout_height="fill_parent"
975.         android:gravity="center"
976.         android:textSize="22dp"
977.         tools:ignore="MissingConstraints" />
978. </androidx.constraintlayout.widget.ConstraintLayout> //获取用户输入的用户名和密码
979. <?xml version="1.0" encoding="utf-8"?>
980. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
981.     xmlns:app="http://schemas.android.com/apk/res-auto"
982.     xmlns:tools="http://schemas.android.com/tools"
983.     android:layout_width="match_parent"
984.     android:layout_height="match_parent"
985.     tools:context=".Welcome">
986.     <TextView
987.         android:id="@+id/mainword"
988.         android:layout_width="fill_parent"
989.         android:layout_height="fill_parent"
990.         android:gravity="center"
991.         android:textSize="22dp"
992.         tools:ignore="MissingConstraints" />
993. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
994. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
995.     xmlns:app="http://schemas.android.com/apk/res-auto"
996.     xmlns:tools="http://schemas.android.com/tools"
997.     android:layout_width="match_parent"
998.     android:layout_height="match_parent"
999.     tools:context=".Welcome">
1000.     <TextView
1001.         android:id="@+id/mainword"
1002.         android:layout_width="fill_parent"
1003.         android:layout_height="fill_parent"
1004.         android:gravity="center"
1005.         android:textSize="22dp"
1006.         tools:ignore="MissingConstraints" />
1007. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1008. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1009.     xmlns:app="http://schemas.android.com/apk/res-auto"
1010.     xmlns:tools="http://schemas.android.com/tools"
1011.     android:layout_width="match_parent"
1012.     android:layout_height="match_parent"
1013.     tools:context=".Welcome">
1014.     <TextView
1015.         android:id="@+id/mainword"
1016.         android:layout_width="fill_parent"
1017.         android:layout_height="fill_parent"
1018.         android:gravity="center"
1019.         android:textSize="22dp"
1020.         tools:ignore="MissingConstraints" />
1021. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1022. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1023.     xmlns:app="http://schemas.android.com/apk/res-auto"
1024.     xmlns:tools="http://schemas.android.com/tools"
1025.     android:layout_width="match_parent"
1026.     android:layout_height="match_parent"
1027.     tools:context=".Welcome">
1028.     <TextView
1029.         android:id="@+id/mainword"
1030.         android:layout_width="fill_parent"
1031.         android:layout_height="fill_parent"
1032.         android:gravity="center"
1033.         android:textSize="22dp"
1034.         tools:ignore="MissingConstraints" />
1035. </androidx.constraintlayout.widget.ConstraintLayout>//查询用户名和密码相同的数据
1036. <?xml version="1.0" encoding="utf-8"?>
1037. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1038.     xmlns:app="http://schemas.android.com/apk/res-auto"
1039.     xmlns:tools="http://schemas.android.com/tools"
1040.     android:layout_width="match_parent"
1041.     android:layout_height="match_parent"
1042.     tools:context=".Welcome">
1043.     <TextView
1044.         android:id="@+id/mainword"
1045.         android:layout_width="fill_parent"
1046.         android:layout_height="fill_parent"
1047.         android:gravity="center"
1048.         android:textSize="22dp"
1049.         tools:ignore="MissingConstraints" />
1050. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1051. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1052.     xmlns:app="http://schemas.android.com/apk/res-auto"
1053.     xmlns:tools="http://schemas.android.com/tools"
1054.     android:layout_width="match_parent"
1055.     android:layout_height="match_parent"
1056.     tools:context=".Welcome">
1057.     <TextView
1058.         android:id="@+id/mainword"
1059.         android:layout_width="fill_parent"
1060.         android:layout_height="fill_parent"
1061.         android:gravity="center"
1062.         android:textSize="22dp"
1063.         tools:ignore="MissingConstraints" />
1064. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1065. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1066.     xmlns:app="http://schemas.android.com/apk/res-auto"
1067.     xmlns:tools="http://schemas.android.com/tools"
1068.     android:layout_width="match_parent"
1069.     android:layout_height="match_parent"
1070.     tools:context=".Welcome">
1071.     <TextView
1072.         android:id="@+id/mainword"
1073.         android:layout_width="fill_parent"
1074.         android:layout_height="fill_parent"
1075.         android:gravity="center"
1076.         android:textSize="22dp"
1077.         tools:ignore="MissingConstraints" />
1078. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1079. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1080.     xmlns:app="http://schemas.android.com/apk/res-auto"
1081.     xmlns:tools="http://schemas.android.com/tools"
1082.     android:layout_width="match_parent"
1083.     android:layout_height="match_parent"
1084.     tools:context=".Welcome">
1085.     <TextView
1086.         android:id="@+id/mainword"
1087.         android:layout_width="fill_parent"
1088.         android:layout_height="fill_parent"
1089.         android:gravity="center"
1090.         android:textSize="22dp"
1091.         tools:ignore="MissingConstraints" />
1092. </androidx.constraintlayout.widget.ConstraintLayout>Cursor cursor = db.query("logins",new String[]{"usname","uspwd"}," usname=? and uspwd=?",new String[]{username,password},null,null,null);
1094. <?xml version="1.0" encoding="utf-8"?>
1095. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1096.     xmlns:app="http://schemas.android.com/apk/res-auto"
1097.     xmlns:tools="http://schemas.android.com/tools"
1098.     android:layout_width="match_parent"
1099.     android:layout_height="match_parent"
1100.     tools:context=".Welcome">
1101.     <TextView
1102.         android:id="@+id/mainword"
1103.         android:layout_width="fill_parent"
1104.         android:layout_height="fill_parent"
1105.         android:gravity="center"
1106.         android:textSize="22dp"
1107.         tools:ignore="MissingConstraints" />
1108. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1109. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1110.     xmlns:app="http://schemas.android.com/apk/res-auto"
1111.     xmlns:tools="http://schemas.android.com/tools"
1112.     android:layout_width="match_parent"
1113.     android:layout_height="match_parent"
1114.     tools:context=".Welcome">
1115.     <TextView
1116.         android:id="@+id/mainword"
1117.         android:layout_width="fill_parent"
1118.         android:layout_height="fill_parent"
1119.         android:gravity="center"
1120.         android:textSize="22dp"
1121.         tools:ignore="MissingConstraints" />
1122. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1123. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1124.     xmlns:app="http://schemas.android.com/apk/res-auto"
1125.     xmlns:tools="http://schemas.android.com/tools"
1126.     android:layout_width="match_parent"
1127.     android:layout_height="match_parent"
1128.     tools:context=".Welcome">
1129.     <TextView
1130.         android:id="@+id/mainword"
1131.         android:layout_width="fill_parent"
1132.         android:layout_height="fill_parent"
1133.         android:gravity="center"
1134.         android:textSize="22dp"
1135.         tools:ignore="MissingConstraints" />
1136. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1137. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1138.     xmlns:app="http://schemas.android.com/apk/res-auto"
1139.     xmlns:tools="http://schemas.android.com/tools"
1140.     android:layout_width="match_parent"
1141.     android:layout_height="match_parent"
1142.     tools:context=".Welcome">
1143.     <TextView
1144.         android:id="@+id/mainword"
1145.         android:layout_width="fill_parent"
1146.         android:layout_height="fill_parent"
1147.         android:gravity="center"
1148.         android:textSize="22dp"
1149.         tools:ignore="MissingConstraints" />
1150. </androidx.constraintlayout.widget.ConstraintLayout>int flag = cursor.getCount();<?xml version="1.0" encoding="utf-8"?>
1151. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1152.     xmlns:app="http://schemas.android.com/apk/res-auto"
1153.     xmlns:tools="http://schemas.android.com/tools"
1154.     android:layout_width="match_parent"
1155.     android:layout_height="match_parent"
1156.     tools:context=".Welcome">
1157.     <TextView
1158.         android:id="@+id/mainword"
1159.         android:layout_width="fill_parent"
1160.         android:layout_height="fill_parent"
1161.         android:gravity="center"
1162.         android:textSize="22dp"
1163.         tools:ignore="MissingConstraints" />
1164. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1165. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1166.     xmlns:app="http://schemas.android.com/apk/res-auto"
1167.     xmlns:tools="http://schemas.android.com/tools"
1168.     android:layout_width="match_parent"
1169.     android:layout_height="match_parent"
1170.     tools:context=".Welcome">
1171.     <TextView
1172.         android:id="@+id/mainword"
1173.         android:layout_width="fill_parent"
1174.         android:layout_height="fill_parent"
1175.         android:gravity="center"
1176.         android:textSize="22dp"
1177.         tools:ignore="MissingConstraints" />
1178. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1179. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1180.     xmlns:app="http://schemas.android.com/apk/res-auto"
1181.     xmlns:tools="http://schemas.android.com/tools"
1182.     android:layout_width="match_parent"
1183.     android:layout_height="match_parent"
1184.     tools:context=".Welcome">
1185.     <TextView
1186.         android:id="@+id/mainword"
1187.         android:layout_width="fill_parent"
1188.         android:layout_height="fill_parent"
1189.         android:gravity="center"
1190.         android:textSize="22dp"
1191.         tools:ignore="MissingConstraints" />
1192. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1193. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1194.     xmlns:app="http://schemas.android.com/apk/res-auto"
1195.     xmlns:tools="http://schemas.android.com/tools"
1196.     android:layout_width="match_parent"
1197.     android:layout_height="match_parent"
1198.     tools:context=".Welcome">
1199.     <TextView
1200.         android:id="@+id/mainword"
1201.         android:layout_width="fill_parent"
1202.         android:layout_height="fill_parent"
1203.         android:gravity="center"
1204.         android:textSize="22dp"
1205.         tools:ignore="MissingConstraints" />
1206. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1207. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1208.     xmlns:app="http://schemas.android.com/apk/res-auto"
1209.     xmlns:tools="http://schemas.android.com/tools"
1210.     android:layout_width="match_parent"
1211.     android:layout_height="match_parent"
1212.     tools:context=".Welcome">
1213.     <TextView
1214.         android:id="@+id/mainword"
1215.         android:layout_width="fill_parent"
1216.         android:layout_height="fill_parent"
1217.         android:gravity="center"
1218.         android:textSize="22dp"
1219.         tools:ignore="MissingConstraints" />
1220. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1221. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1222.     xmlns:app="http://schemas.android.com/apk/res-auto"
1223.     xmlns:tools="http://schemas.android.com/tools"
1224.     android:layout_width="match_parent"
1225.     android:layout_height="match_parent"
1226.     tools:context=".Welcome">
1227.     <TextView
1228.         android:id="@+id/mainword"
1229.         android:layout_width="fill_parent"
1230.         android:layout_height="fill_parent"
1231.         android:gravity="center"
1232.         android:textSize="22dp"
1233.         tools:ignore="MissingConstraints" />
1234. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1235. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1236.     xmlns:app="http://schemas.android.com/apk/res-auto"
1237.     xmlns:tools="http://schemas.android.com/tools"
1238.     android:layout_width="match_parent"
1239.     android:layout_height="match_parent"
1240.     tools:context=".Welcome">
1241.     <TextView
1242.         android:id="@+id/mainword"
1243.         android:layout_width="fill_parent"
1244.         android:layout_height="fill_parent"
1245.         android:gravity="center"
1246.         android:textSize="22dp"
1247.         tools:ignore="MissingConstraints" />
1248. </androidx.constraintlayout.widget.ConstraintLayout>//查询出来的记录项的条数，若没有该用户则为0条
1249. <?xml version="1.0" encoding="utf-8"?>
1250. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1251.     xmlns:app="http://schemas.android.com/apk/res-auto"
1252.     xmlns:tools="http://schemas.android.com/tools"
1253.     android:layout_width="match_parent"
1254.     android:layout_height="match_parent"
1255.     tools:context=".Welcome">
1256.     <TextView
1257.         android:id="@+id/mainword"
1258.         android:layout_width="fill_parent"
1259.         android:layout_height="fill_parent"
1260.         android:gravity="center"
1261.         android:textSize="22dp"
1262.         tools:ignore="MissingConstraints" />
1263. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1264. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1265.     xmlns:app="http://schemas.android.com/apk/res-auto"
1266.     xmlns:tools="http://schemas.android.com/tools"
1267.     android:layout_width="match_parent"
1268.     android:layout_height="match_parent"
1269.     tools:context=".Welcome">
1270.     <TextView
1271.         android:id="@+id/mainword"
1272.         android:layout_width="fill_parent"
1273.         android:layout_height="fill_parent"
1274.         android:gravity="center"
1275.         android:textSize="22dp"
1276.         tools:ignore="MissingConstraints" />
1277. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1278. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1279.     xmlns:app="http://schemas.android.com/apk/res-auto"
1280.     xmlns:tools="http://schemas.android.com/tools"
1281.     android:layout_width="match_parent"
1282.     android:layout_height="match_parent"
1283.     tools:context=".Welcome">
1284.     <TextView
1285.         android:id="@+id/mainword"
1286.         android:layout_width="fill_parent"
1287.         android:layout_height="fill_parent"
1288.         android:gravity="center"
1289.         android:textSize="22dp"
1290.         tools:ignore="MissingConstraints" />
1291. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1292. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1293.     xmlns:app="http://schemas.android.com/apk/res-auto"
1294.     xmlns:tools="http://schemas.android.com/tools"
1295.     android:layout_width="match_parent"
1296.     android:layout_height="match_parent"
1297.     tools:context=".Welcome">
1298.     <TextView
1299.         android:id="@+id/mainword"
1300.         android:layout_width="fill_parent"
1301.         android:layout_height="fill_parent"
1302.         android:gravity="center"
1303.         android:textSize="22dp"
1304.         tools:ignore="MissingConstraints" />
1305. </androidx.constraintlayout.widget.ConstraintLayout>if(flag!=0){<?xml version="1.0" encoding="utf-8"?>
1306. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1307.     xmlns:app="http://schemas.android.com/apk/res-auto"
1308.     xmlns:tools="http://schemas.android.com/tools"
1309.     android:layout_width="match_parent"
1310.     android:layout_height="match_parent"
1311.     tools:context=".Welcome">
1312.     <TextView
1313.         android:id="@+id/mainword"
1314.         android:layout_width="fill_parent"
1315.         android:layout_height="fill_parent"
1316.         android:gravity="center"
1317.         android:textSize="22dp"
1318.         tools:ignore="MissingConstraints" />
1319. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1320. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1321.     xmlns:app="http://schemas.android.com/apk/res-auto"
1322.     xmlns:tools="http://schemas.android.com/tools"
1323.     android:layout_width="match_parent"
1324.     android:layout_height="match_parent"
1325.     tools:context=".Welcome">
1326.     <TextView
1327.         android:id="@+id/mainword"
1328.         android:layout_width="fill_parent"
1329.         android:layout_height="fill_parent"
1330.         android:gravity="center"
1331.         android:textSize="22dp"
1332.         tools:ignore="MissingConstraints" />
1333. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1334. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1335.     xmlns:app="http://schemas.android.com/apk/res-auto"
1336.     xmlns:tools="http://schemas.android.com/tools"
1337.     android:layout_width="match_parent"
1338.     android:layout_height="match_parent"
1339.     tools:context=".Welcome">
1340.     <TextView
1341.         android:id="@+id/mainword"
1342.         android:layout_width="fill_parent"
1343.         android:layout_height="fill_parent"
1344.         android:gravity="center"
1345.         android:textSize="22dp"
1346.         tools:ignore="MissingConstraints" />
1347. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1348. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1349.     xmlns:app="http://schemas.android.com/apk/res-auto"
1350.     xmlns:tools="http://schemas.android.com/tools"
1351.     android:layout_width="match_parent"
1352.     android:layout_height="match_parent"
1353.     tools:context=".Welcome">
1354.     <TextView
1355.         android:id="@+id/mainword"
1356.         android:layout_width="fill_parent"
1357.         android:layout_height="fill_parent"
1358.         android:gravity="center"
1359.         android:textSize="22dp"
1360.         tools:ignore="MissingConstraints" />
1361. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1362. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1363.     xmlns:app="http://schemas.android.com/apk/res-auto"
1364.     xmlns:tools="http://schemas.android.com/tools"
1365.     android:layout_width="match_parent"
1366.     android:layout_height="match_parent"
1367.     tools:context=".Welcome">
1368.     <TextView
1369.         android:id="@+id/mainword"
1370.         android:layout_width="fill_parent"
1371.         android:layout_height="fill_parent"
1372.         android:gravity="center"
1373.         android:textSize="22dp"
1374.         tools:ignore="MissingConstraints" />
1375. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1376. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1377.     xmlns:app="http://schemas.android.com/apk/res-auto"
1378.     xmlns:tools="http://schemas.android.com/tools"
1379.     android:layout_width="match_parent"
1380.     android:layout_height="match_parent"
1381.     tools:context=".Welcome">
1382.     <TextView
1383.         android:id="@+id/mainword"
1384.         android:layout_width="fill_parent"
1385.         android:layout_height="fill_parent"
1386.         android:gravity="center"
1387.         android:textSize="22dp"
1388.         tools:ignore="MissingConstraints" />
1389. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1390. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1391.     xmlns:app="http://schemas.android.com/apk/res-auto"
1392.     xmlns:tools="http://schemas.android.com/tools"
1393.     android:layout_width="match_parent"
1394.     android:layout_height="match_parent"
1395.     tools:context=".Welcome">
1396.     <TextView
1397.         android:id="@+id/mainword"
1398.         android:layout_width="fill_parent"
1399.         android:layout_height="fill_parent"
1400.         android:gravity="center"
1401.         android:textSize="22dp"
1402.         tools:ignore="MissingConstraints" />
1403. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1404. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1405.     xmlns:app="http://schemas.android.com/apk/res-auto"
1406.     xmlns:tools="http://schemas.android.com/tools"
1407.     android:layout_width="match_parent"
1408.     android:layout_height="match_parent"
1409.     tools:context=".Welcome">
1410.     <TextView
1411.         android:id="@+id/mainword"
1412.         android:layout_width="fill_parent"
1413.         android:layout_height="fill_parent"
1414.         android:gravity="center"
1415.         android:textSize="22dp"
1416.         tools:ignore="MissingConstraints" />
1417. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1418. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1419.     xmlns:app="http://schemas.android.com/apk/res-auto"
1420.     xmlns:tools="http://schemas.android.com/tools"
1421.     android:layout_width="match_parent"
1422.     android:layout_height="match_parent"
1423.     tools:context=".Welcome">
1424.     <TextView
1425.         android:id="@+id/mainword"
1426.         android:layout_width="fill_parent"
1427.         android:layout_height="fill_parent"
1428.         android:gravity="center"
1429.         android:textSize="22dp"
1430.         tools:ignore="MissingConstraints" />
1431. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1432. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1433.     xmlns:app="http://schemas.android.com/apk/res-auto"
1434.     xmlns:tools="http://schemas.android.com/tools"
1435.     android:layout_width="match_parent"
1436.     android:layout_height="match_parent"
1437.     tools:context=".Welcome">
1438.     <TextView
1439.         android:id="@+id/mainword"
1440.         android:layout_width="fill_parent"
1441.         android:layout_height="fill_parent"
1442.         android:gravity="center"
1443.         android:textSize="22dp"
1444.         tools:ignore="MissingConstraints" />
1445. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1446. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1447.     xmlns:app="http://schemas.android.com/apk/res-auto"
1448.     xmlns:tools="http://schemas.android.com/tools"
1449.     android:layout_width="match_parent"
1450.     android:layout_height="match_parent"
1451.     tools:context=".Welcome">
1452.     <TextView
1453.         android:id="@+id/mainword"
1454.         android:layout_width="fill_parent"
1455.         android:layout_height="fill_parent"
1456.         android:gravity="center"
1457.         android:textSize="22dp"
1458.         tools:ignore="MissingConstraints" />
1459. </androidx.constraintlayout.widget.ConstraintLayout>//若查询出的记录不为0，则进行跳转操作
1460. <?xml version="1.0" encoding="utf-8"?>
1461. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1462.     xmlns:app="http://schemas.android.com/apk/res-auto"
1463.     xmlns:tools="http://schemas.android.com/tools"
1464.     android:layout_width="match_parent"
1465.     android:layout_height="match_parent"
1466.     tools:context=".Welcome">
1467.     <TextView
1468.         android:id="@+id/mainword"
1469.         android:layout_width="fill_parent"
1470.         android:layout_height="fill_parent"
1471.         android:gravity="center"
1472.         android:textSize="22dp"
1473.         tools:ignore="MissingConstraints" />
1474. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1475. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1476.     xmlns:app="http://schemas.android.com/apk/res-auto"
1477.     xmlns:tools="http://schemas.android.com/tools"
1478.     android:layout_width="match_parent"
1479.     android:layout_height="match_parent"
1480.     tools:context=".Welcome">
1481.     <TextView
1482.         android:id="@+id/mainword"
1483.         android:layout_width="fill_parent"
1484.         android:layout_height="fill_parent"
1485.         android:gravity="center"
1486.         android:textSize="22dp"
1487.         tools:ignore="MissingConstraints" />
1488. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1489. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1490.     xmlns:app="http://schemas.android.com/apk/res-auto"
1491.     xmlns:tools="http://schemas.android.com/tools"
1492.     android:layout_width="match_parent"
1493.     android:layout_height="match_parent"
1494.     tools:context=".Welcome">
1495.     <TextView
1496.         android:id="@+id/mainword"
1497.         android:layout_width="fill_parent"
1498.         android:layout_height="fill_parent"
1499.         android:gravity="center"
1500.         android:textSize="22dp"
1501.         tools:ignore="MissingConstraints" />
1502. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1503. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1504.     xmlns:app="http://schemas.android.com/apk/res-auto"
1505.     xmlns:tools="http://schemas.android.com/tools"
1506.     android:layout_width="match_parent"
1507.     android:layout_height="match_parent"
1508.     tools:context=".Welcome">
1509.     <TextView
1510.         android:id="@+id/mainword"
1511.         android:layout_width="fill_parent"
1512.         android:layout_height="fill_parent"
1513.         android:gravity="center"
1514.         android:textSize="22dp"
1515.         tools:ignore="MissingConstraints" />
1516. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1517. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1518.     xmlns:app="http://schemas.android.com/apk/res-auto"
1519.     xmlns:tools="http://schemas.android.com/tools"
1520.     android:layout_width="match_parent"
1521.     android:layout_height="match_parent"
1522.     tools:context=".Welcome">
1523.     <TextView
1524.         android:id="@+id/mainword"
1525.         android:layout_width="fill_parent"
1526.         android:layout_height="fill_parent"
1527.         android:gravity="center"
1528.         android:textSize="22dp"
1529.         tools:ignore="MissingConstraints" />
1530. </androidx.constraintlayout.widget.ConstraintLayout>Intent intent = new Intent();
1531. <?xml version="1.0" encoding="utf-8"?>
1532. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1533.     xmlns:app="http://schemas.android.com/apk/res-auto"
1534.     xmlns:tools="http://schemas.android.com/tools"
1535.     android:layout_width="match_parent"
1536.     android:layout_height="match_parent"
1537.     tools:context=".Welcome">
1538.     <TextView
1539.         android:id="@+id/mainword"
1540.         android:layout_width="fill_parent"
1541.         android:layout_height="fill_parent"
1542.         android:gravity="center"
1543.         android:textSize="22dp"
1544.         tools:ignore="MissingConstraints" />
1545. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1546. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1547.     xmlns:app="http://schemas.android.com/apk/res-auto"
1548.     xmlns:tools="http://schemas.android.com/tools"
1549.     android:layout_width="match_parent"
1550.     android:layout_height="match_parent"
1551.     tools:context=".Welcome">
1552.     <TextView
1553.         android:id="@+id/mainword"
1554.         android:layout_width="fill_parent"
1555.         android:layout_height="fill_parent"
1556.         android:gravity="center"
1557.         android:textSize="22dp"
1558.         tools:ignore="MissingConstraints" />
1559. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1560. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1561.     xmlns:app="http://schemas.android.com/apk/res-auto"
1562.     xmlns:tools="http://schemas.android.com/tools"
1563.     android:layout_width="match_parent"
1564.     android:layout_height="match_parent"
1565.     tools:context=".Welcome">
1566.     <TextView
1567.         android:id="@+id/mainword"
1568.         android:layout_width="fill_parent"
1569.         android:layout_height="fill_parent"
1570.         android:gravity="center"
1571.         android:textSize="22dp"
1572.         tools:ignore="MissingConstraints" />
1573. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1574. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1575.     xmlns:app="http://schemas.android.com/apk/res-auto"
1576.     xmlns:tools="http://schemas.android.com/tools"
1577.     android:layout_width="match_parent"
1578.     android:layout_height="match_parent"
1579.     tools:context=".Welcome">
1580.     <TextView
1581.         android:id="@+id/mainword"
1582.         android:layout_width="fill_parent"
1583.         android:layout_height="fill_parent"
1584.         android:gravity="center"
1585.         android:textSize="22dp"
1586.         tools:ignore="MissingConstraints" />
1587. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1588. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1589.     xmlns:app="http://schemas.android.com/apk/res-auto"
1590.     xmlns:tools="http://schemas.android.com/tools"
1591.     android:layout_width="match_parent"
1592.     android:layout_height="match_parent"
1593.     tools:context=".Welcome">
1594.     <TextView
1595.         android:id="@+id/mainword"
1596.         android:layout_width="fill_parent"
1597.         android:layout_height="fill_parent"
1598.         android:gravity="center"
1599.         android:textSize="22dp"
1600.         tools:ignore="MissingConstraints" />
1601. </androidx.constraintlayout.widget.ConstraintLayout>intent.setClass(MainActivity.this,Welcome.class);<?xml version="1.0" encoding="utf-8"?>
1602. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1603.     xmlns:app="http://schemas.android.com/apk/res-auto"
1604.     xmlns:tools="http://schemas.android.com/tools"
1605.     android:layout_width="match_parent"
1606.     android:layout_height="match_parent"
1607.     tools:context=".Welcome">
1608.     <TextView
1609.         android:id="@+id/mainword"
1610.         android:layout_width="fill_parent"
1611.         android:layout_height="fill_parent"
1612.         android:gravity="center"
1613.         android:textSize="22dp"
1614.         tools:ignore="MissingConstraints" />
1615. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1616. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1617.     xmlns:app="http://schemas.android.com/apk/res-auto"
1618.     xmlns:tools="http://schemas.android.com/tools"
1619.     android:layout_width="match_parent"
1620.     android:layout_height="match_parent"
1621.     tools:context=".Welcome">
1622.     <TextView
1623.         android:id="@+id/mainword"
1624.         android:layout_width="fill_parent"
1625.         android:layout_height="fill_parent"
1626.         android:gravity="center"
1627.         android:textSize="22dp"
1628.         tools:ignore="MissingConstraints" />
1629. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1630. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1631.     xmlns:app="http://schemas.android.com/apk/res-auto"
1632.     xmlns:tools="http://schemas.android.com/tools"
1633.     android:layout_width="match_parent"
1634.     android:layout_height="match_parent"
1635.     tools:context=".Welcome">
1636.     <TextView
1637.         android:id="@+id/mainword"
1638.         android:layout_width="fill_parent"
1639.         android:layout_height="fill_parent"
1640.         android:gravity="center"
1641.         android:textSize="22dp"
1642.         tools:ignore="MissingConstraints" />
1643. </androidx.constraintlayout.widget.ConstraintLayout>//设置页面跳转
1644. <?xml version="1.0" encoding="utf-8"?>
1645. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1646.     xmlns:app="http://schemas.android.com/apk/res-auto"
1647.     xmlns:tools="http://schemas.android.com/tools"
1648.     android:layout_width="match_parent"
1649.     android:layout_height="match_parent"
1650.     tools:context=".Welcome">
1651.     <TextView
1652.         android:id="@+id/mainword"
1653.         android:layout_width="fill_parent"
1654.         android:layout_height="fill_parent"
1655.         android:gravity="center"
1656.         android:textSize="22dp"
1657.         tools:ignore="MissingConstraints" />
1658. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1659. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1660.     xmlns:app="http://schemas.android.com/apk/res-auto"
1661.     xmlns:tools="http://schemas.android.com/tools"
1662.     android:layout_width="match_parent"
1663.     android:layout_height="match_parent"
1664.     tools:context=".Welcome">
1665.     <TextView
1666.         android:id="@+id/mainword"
1667.         android:layout_width="fill_parent"
1668.         android:layout_height="fill_parent"
1669.         android:gravity="center"
1670.         android:textSize="22dp"
1671.         tools:ignore="MissingConstraints" />
1672. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1673. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1674.     xmlns:app="http://schemas.android.com/apk/res-auto"
1675.     xmlns:tools="http://schemas.android.com/tools"
1676.     android:layout_width="match_parent"
1677.     android:layout_height="match_parent"
1678.     tools:context=".Welcome">
1679.     <TextView
1680.         android:id="@+id/mainword"
1681.         android:layout_width="fill_parent"
1682.         android:layout_height="fill_parent"
1683.         android:gravity="center"
1684.         android:textSize="22dp"
1685.         tools:ignore="MissingConstraints" />
1686. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1687. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1688.     xmlns:app="http://schemas.android.com/apk/res-auto"
1689.     xmlns:tools="http://schemas.android.com/tools"
1690.     android:layout_width="match_parent"
1691.     android:layout_height="match_parent"
1692.     tools:context=".Welcome">
1693.     <TextView
1694.         android:id="@+id/mainword"
1695.         android:layout_width="fill_parent"
1696.         android:layout_height="fill_parent"
1697.         android:gravity="center"
1698.         android:textSize="22dp"
1699.         tools:ignore="MissingConstraints" />
1700. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1701. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1702.     xmlns:app="http://schemas.android.com/apk/res-auto"
1703.     xmlns:tools="http://schemas.android.com/tools"
1704.     android:layout_width="match_parent"
1705.     android:layout_height="match_parent"
1706.     tools:context=".Welcome">
1707.     <TextView
1708.         android:id="@+id/mainword"
1709.         android:layout_width="fill_parent"
1710.         android:layout_height="fill_parent"
1711.         android:gravity="center"
1712.         android:textSize="22dp"
1713.         tools:ignore="MissingConstraints" />
1714. </androidx.constraintlayout.widget.ConstraintLayout>SharedPreferences.Editor editor = sp2.edit();
1715. <?xml version="1.0" encoding="utf-8"?>
1716. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1717.     xmlns:app="http://schemas.android.com/apk/res-auto"
1718.     xmlns:tools="http://schemas.android.com/tools"
1719.     android:layout_width="match_parent"
1720.     android:layout_height="match_parent"
1721.     tools:context=".Welcome">
1722.     <TextView
1723.         android:id="@+id/mainword"
1724.         android:layout_width="fill_parent"
1725.         android:layout_height="fill_parent"
1726.         android:gravity="center"
1727.         android:textSize="22dp"
1728.         tools:ignore="MissingConstraints" />
1729. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1730. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1731.     xmlns:app="http://schemas.android.com/apk/res-auto"
1732.     xmlns:tools="http://schemas.android.com/tools"
1733.     android:layout_width="match_parent"
1734.     android:layout_height="match_parent"
1735.     tools:context=".Welcome">
1736.     <TextView
1737.         android:id="@+id/mainword"
1738.         android:layout_width="fill_parent"
1739.         android:layout_height="fill_parent"
1740.         android:gravity="center"
1741.         android:textSize="22dp"
1742.         tools:ignore="MissingConstraints" />
1743. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1744. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1745.     xmlns:app="http://schemas.android.com/apk/res-auto"
1746.     xmlns:tools="http://schemas.android.com/tools"
1747.     android:layout_width="match_parent"
1748.     android:layout_height="match_parent"
1749.     tools:context=".Welcome">
1750.     <TextView
1751.         android:id="@+id/mainword"
1752.         android:layout_width="fill_parent"
1753.         android:layout_height="fill_parent"
1754.         android:gravity="center"
1755.         android:textSize="22dp"
1756.         tools:ignore="MissingConstraints" />
1757. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1758. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1759.     xmlns:app="http://schemas.android.com/apk/res-auto"
1760.     xmlns:tools="http://schemas.android.com/tools"
1761.     android:layout_width="match_parent"
1762.     android:layout_height="match_parent"
1763.     tools:context=".Welcome">
1764.     <TextView
1765.         android:id="@+id/mainword"
1766.         android:layout_width="fill_parent"
1767.         android:layout_height="fill_parent"
1768.         android:gravity="center"
1769.         android:textSize="22dp"
1770.         tools:ignore="MissingConstraints" />
1771. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1772. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1773.     xmlns:app="http://schemas.android.com/apk/res-auto"
1774.     xmlns:tools="http://schemas.android.com/tools"
1775.     android:layout_width="match_parent"
1776.     android:layout_height="match_parent"
1777.     tools:context=".Welcome">
1778.     <TextView
1779.         android:id="@+id/mainword"
1780.         android:layout_width="fill_parent"
1781.         android:layout_height="fill_parent"
1782.         android:gravity="center"
1783.         android:textSize="22dp"
1784.         tools:ignore="MissingConstraints" />
1785. </androidx.constraintlayout.widget.ConstraintLayout>cursor.moveToFirst();<?xml version="1.0" encoding="utf-8"?>
1786. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1787.     xmlns:app="http://schemas.android.com/apk/res-auto"
1788.     xmlns:tools="http://schemas.android.com/tools"
1789.     android:layout_width="match_parent"
1790.     android:layout_height="match_parent"
1791.     tools:context=".Welcome">
1792.     <TextView
1793.         android:id="@+id/mainword"
1794.         android:layout_width="fill_parent"
1795.         android:layout_height="fill_parent"
1796.         android:gravity="center"
1797.         android:textSize="22dp"
1798.         tools:ignore="MissingConstraints" />
1799. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1800. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1801.     xmlns:app="http://schemas.android.com/apk/res-auto"
1802.     xmlns:tools="http://schemas.android.com/tools"
1803.     android:layout_width="match_parent"
1804.     android:layout_height="match_parent"
1805.     tools:context=".Welcome">
1806.     <TextView
1807.         android:id="@+id/mainword"
1808.         android:layout_width="fill_parent"
1809.         android:layout_height="fill_parent"
1810.         android:gravity="center"
1811.         android:textSize="22dp"
1812.         tools:ignore="MissingConstraints" />
1813. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1814. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1815.     xmlns:app="http://schemas.android.com/apk/res-auto"
1816.     xmlns:tools="http://schemas.android.com/tools"
1817.     android:layout_width="match_parent"
1818.     android:layout_height="match_parent"
1819.     tools:context=".Welcome">
1820.     <TextView
1821.         android:id="@+id/mainword"
1822.         android:layout_width="fill_parent"
1823.         android:layout_height="fill_parent"
1824.         android:gravity="center"
1825.         android:textSize="22dp"
1826.         tools:ignore="MissingConstraints" />
1827. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1828. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1829.     xmlns:app="http://schemas.android.com/apk/res-auto"
1830.     xmlns:tools="http://schemas.android.com/tools"
1831.     android:layout_width="match_parent"
1832.     android:layout_height="match_parent"
1833.     tools:context=".Welcome">
1834.     <TextView
1835.         android:id="@+id/mainword"
1836.         android:layout_width="fill_parent"
1837.         android:layout_height="fill_parent"
1838.         android:gravity="center"
1839.         android:textSize="22dp"
1840.         tools:ignore="MissingConstraints" />
1841. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1842. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1843.     xmlns:app="http://schemas.android.com/apk/res-auto"
1844.     xmlns:tools="http://schemas.android.com/tools"
1845.     android:layout_width="match_parent"
1846.     android:layout_height="match_parent"
1847.     tools:context=".Welcome">
1848.     <TextView
1849.         android:id="@+id/mainword"
1850.         android:layout_width="fill_parent"
1851.         android:layout_height="fill_parent"
1852.         android:gravity="center"
1853.         android:textSize="22dp"
1854.         tools:ignore="MissingConstraints" />
1855. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1856. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1857.     xmlns:app="http://schemas.android.com/apk/res-auto"
1858.     xmlns:tools="http://schemas.android.com/tools"
1859.     android:layout_width="match_parent"
1860.     android:layout_height="match_parent"
1861.     tools:context=".Welcome">
1862.     <TextView
1863.         android:id="@+id/mainword"
1864.         android:layout_width="fill_parent"
1865.         android:layout_height="fill_parent"
1866.         android:gravity="center"
1867.         android:textSize="22dp"
1868.         tools:ignore="MissingConstraints" />
1869. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1870. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1871.     xmlns:app="http://schemas.android.com/apk/res-auto"
1872.     xmlns:tools="http://schemas.android.com/tools"
1873.     android:layout_width="match_parent"
1874.     android:layout_height="match_parent"
1875.     tools:context=".Welcome">
1876.     <TextView
1877.         android:id="@+id/mainword"
1878.         android:layout_width="fill_parent"
1879.         android:layout_height="fill_parent"
1880.         android:gravity="center"
1881.         android:textSize="22dp"
1882.         tools:ignore="MissingConstraints" />
1883. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1884. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1885.     xmlns:app="http://schemas.android.com/apk/res-auto"
1886.     xmlns:tools="http://schemas.android.com/tools"
1887.     android:layout_width="match_parent"
1888.     android:layout_height="match_parent"
1889.     tools:context=".Welcome">
1890.     <TextView
1891.         android:id="@+id/mainword"
1892.         android:layout_width="fill_parent"
1893.         android:layout_height="fill_parent"
1894.         android:gravity="center"
1895.         android:textSize="22dp"
1896.         tools:ignore="MissingConstraints" />
1897. </androidx.constraintlayout.widget.ConstraintLayout>   //将光标移动到position为0的位置，默认位置为-1
1898. <?xml version="1.0" encoding="utf-8"?>
1899. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1900.     xmlns:app="http://schemas.android.com/apk/res-auto"
1901.     xmlns:tools="http://schemas.android.com/tools"
1902.     android:layout_width="match_parent"
1903.     android:layout_height="match_parent"
1904.     tools:context=".Welcome">
1905.     <TextView
1906.         android:id="@+id/mainword"
1907.         android:layout_width="fill_parent"
1908.         android:layout_height="fill_parent"
1909.         android:gravity="center"
1910.         android:textSize="22dp"
1911.         tools:ignore="MissingConstraints" />
1912. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1913. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1914.     xmlns:app="http://schemas.android.com/apk/res-auto"
1915.     xmlns:tools="http://schemas.android.com/tools"
1916.     android:layout_width="match_parent"
1917.     android:layout_height="match_parent"
1918.     tools:context=".Welcome">
1919.     <TextView
1920.         android:id="@+id/mainword"
1921.         android:layout_width="fill_parent"
1922.         android:layout_height="fill_parent"
1923.         android:gravity="center"
1924.         android:textSize="22dp"
1925.         tools:ignore="MissingConstraints" />
1926. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1927. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1928.     xmlns:app="http://schemas.android.com/apk/res-auto"
1929.     xmlns:tools="http://schemas.android.com/tools"
1930.     android:layout_width="match_parent"
1931.     android:layout_height="match_parent"
1932.     tools:context=".Welcome">
1933.     <TextView
1934.         android:id="@+id/mainword"
1935.         android:layout_width="fill_parent"
1936.         android:layout_height="fill_parent"
1937.         android:gravity="center"
1938.         android:textSize="22dp"
1939.         tools:ignore="MissingConstraints" />
1940. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1941. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1942.     xmlns:app="http://schemas.android.com/apk/res-auto"
1943.     xmlns:tools="http://schemas.android.com/tools"
1944.     android:layout_width="match_parent"
1945.     android:layout_height="match_parent"
1946.     tools:context=".Welcome">
1947.     <TextView
1948.         android:id="@+id/mainword"
1949.         android:layout_width="fill_parent"
1950.         android:layout_height="fill_parent"
1951.         android:gravity="center"
1952.         android:textSize="22dp"
1953.         tools:ignore="MissingConstraints" />
1954. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1955. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1956.     xmlns:app="http://schemas.android.com/apk/res-auto"
1957.     xmlns:tools="http://schemas.android.com/tools"
1958.     android:layout_width="match_parent"
1959.     android:layout_height="match_parent"
1960.     tools:context=".Welcome">
1961.     <TextView
1962.         android:id="@+id/mainword"
1963.         android:layout_width="fill_parent"
1964.         android:layout_height="fill_parent"
1965.         android:gravity="center"
1966.         android:textSize="22dp"
1967.         tools:ignore="MissingConstraints" />
1968. </androidx.constraintlayout.widget.ConstraintLayout>String loginname = cursor.getString(0);
1969. <?xml version="1.0" encoding="utf-8"?>
1970. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1971.     xmlns:app="http://schemas.android.com/apk/res-auto"
1972.     xmlns:tools="http://schemas.android.com/tools"
1973.     android:layout_width="match_parent"
1974.     android:layout_height="match_parent"
1975.     tools:context=".Welcome">
1976.     <TextView
1977.         android:id="@+id/mainword"
1978.         android:layout_width="fill_parent"
1979.         android:layout_height="fill_parent"
1980.         android:gravity="center"
1981.         android:textSize="22dp"
1982.         tools:ignore="MissingConstraints" />
1983. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1984. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1985.     xmlns:app="http://schemas.android.com/apk/res-auto"
1986.     xmlns:tools="http://schemas.android.com/tools"
1987.     android:layout_width="match_parent"
1988.     android:layout_height="match_parent"
1989.     tools:context=".Welcome">
1990.     <TextView
1991.         android:id="@+id/mainword"
1992.         android:layout_width="fill_parent"
1993.         android:layout_height="fill_parent"
1994.         android:gravity="center"
1995.         android:textSize="22dp"
1996.         tools:ignore="MissingConstraints" />
1997. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1998. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1999.     xmlns:app="http://schemas.android.com/apk/res-auto"
2000.     xmlns:tools="http://schemas.android.com/tools"
2001.     android:layout_width="match_parent"
2002.     android:layout_height="match_parent"
2003.     tools:context=".Welcome">
2004.     <TextView
2005.         android:id="@+id/mainword"
2006.         android:layout_width="fill_parent"
2007.         android:layout_height="fill_parent"
2008.         android:gravity="center"
2009.         android:textSize="22dp"
2010.         tools:ignore="MissingConstraints" />
2011. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2012. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2013.     xmlns:app="http://schemas.android.com/apk/res-auto"
2014.     xmlns:tools="http://schemas.android.com/tools"
2015.     android:layout_width="match_parent"
2016.     android:layout_height="match_parent"
2017.     tools:context=".Welcome">
2018.     <TextView
2019.         android:id="@+id/mainword"
2020.         android:layout_width="fill_parent"
2021.         android:layout_height="fill_parent"
2022.         android:gravity="center"
2023.         android:textSize="22dp"
2024.         tools:ignore="MissingConstraints" />
2025. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2026. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2027.     xmlns:app="http://schemas.android.com/apk/res-auto"
2028.     xmlns:tools="http://schemas.android.com/tools"
2029.     android:layout_width="match_parent"
2030.     android:layout_height="match_parent"
2031.     tools:context=".Welcome">
2032.     <TextView
2033.         android:id="@+id/mainword"
2034.         android:layout_width="fill_parent"
2035.         android:layout_height="fill_parent"
2036.         android:gravity="center"
2037.         android:textSize="22dp"
2038.         tools:ignore="MissingConstraints" />
2039. </androidx.constraintlayout.widget.ConstraintLayout>editor.putString("Loginname",loginname);
2040. <?xml version="1.0" encoding="utf-8"?>
2041. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2042.     xmlns:app="http://schemas.android.com/apk/res-auto"
2043.     xmlns:tools="http://schemas.android.com/tools"
2044.     android:layout_width="match_parent"
2045.     android:layout_height="match_parent"
2046.     tools:context=".Welcome">
2047.     <TextView
2048.         android:id="@+id/mainword"
2049.         android:layout_width="fill_parent"
2050.         android:layout_height="fill_parent"
2051.         android:gravity="center"
2052.         android:textSize="22dp"
2053.         tools:ignore="MissingConstraints" />
2054. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2055. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2056.     xmlns:app="http://schemas.android.com/apk/res-auto"
2057.     xmlns:tools="http://schemas.android.com/tools"
2058.     android:layout_width="match_parent"
2059.     android:layout_height="match_parent"
2060.     tools:context=".Welcome">
2061.     <TextView
2062.         android:id="@+id/mainword"
2063.         android:layout_width="fill_parent"
2064.         android:layout_height="fill_parent"
2065.         android:gravity="center"
2066.         android:textSize="22dp"
2067.         tools:ignore="MissingConstraints" />
2068. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2069. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2070.     xmlns:app="http://schemas.android.com/apk/res-auto"
2071.     xmlns:tools="http://schemas.android.com/tools"
2072.     android:layout_width="match_parent"
2073.     android:layout_height="match_parent"
2074.     tools:context=".Welcome">
2075.     <TextView
2076.         android:id="@+id/mainword"
2077.         android:layout_width="fill_parent"
2078.         android:layout_height="fill_parent"
2079.         android:gravity="center"
2080.         android:textSize="22dp"
2081.         tools:ignore="MissingConstraints" />
2082. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2083. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2084.     xmlns:app="http://schemas.android.com/apk/res-auto"
2085.     xmlns:tools="http://schemas.android.com/tools"
2086.     android:layout_width="match_parent"
2087.     android:layout_height="match_parent"
2088.     tools:context=".Welcome">
2089.     <TextView
2090.         android:id="@+id/mainword"
2091.         android:layout_width="fill_parent"
2092.         android:layout_height="fill_parent"
2093.         android:gravity="center"
2094.         android:textSize="22dp"
2095.         tools:ignore="MissingConstraints" />
2096. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2097. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2098.     xmlns:app="http://schemas.android.com/apk/res-auto"
2099.     xmlns:tools="http://schemas.android.com/tools"
2100.     android:layout_width="match_parent"
2101.     android:layout_height="match_parent"
2102.     tools:context=".Welcome">
2103.     <TextView
2104.         android:id="@+id/mainword"
2105.         android:layout_width="fill_parent"
2106.         android:layout_height="fill_parent"
2107.         android:gravity="center"
2108.         android:textSize="22dp"
2109.         tools:ignore="MissingConstraints" />
2110. </androidx.constraintlayout.widget.ConstraintLayout>editor.commit();<?xml version="1.0" encoding="utf-8"?>
2111. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2112.     xmlns:app="http://schemas.android.com/apk/res-auto"
2113.     xmlns:tools="http://schemas.android.com/tools"
2114.     android:layout_width="match_parent"
2115.     android:layout_height="match_parent"
2116.     tools:context=".Welcome">
2117.     <TextView
2118.         android:id="@+id/mainword"
2119.         android:layout_width="fill_parent"
2120.         android:layout_height="fill_parent"
2121.         android:gravity="center"
2122.         android:textSize="22dp"
2123.         tools:ignore="MissingConstraints" />
2124. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2125. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2126.     xmlns:app="http://schemas.android.com/apk/res-auto"
2127.     xmlns:tools="http://schemas.android.com/tools"
2128.     android:layout_width="match_parent"
2129.     android:layout_height="match_parent"
2130.     tools:context=".Welcome">
2131.     <TextView
2132.         android:id="@+id/mainword"
2133.         android:layout_width="fill_parent"
2134.         android:layout_height="fill_parent"
2135.         android:gravity="center"
2136.         android:textSize="22dp"
2137.         tools:ignore="MissingConstraints" />
2138. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2139. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2140.     xmlns:app="http://schemas.android.com/apk/res-auto"
2141.     xmlns:tools="http://schemas.android.com/tools"
2142.     android:layout_width="match_parent"
2143.     android:layout_height="match_parent"
2144.     tools:context=".Welcome">
2145.     <TextView
2146.         android:id="@+id/mainword"
2147.         android:layout_width="fill_parent"
2148.         android:layout_height="fill_parent"
2149.         android:gravity="center"
2150.         android:textSize="22dp"
2151.         tools:ignore="MissingConstraints" />
2152. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2153. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2154.     xmlns:app="http://schemas.android.com/apk/res-auto"
2155.     xmlns:tools="http://schemas.android.com/tools"
2156.     android:layout_width="match_parent"
2157.     android:layout_height="match_parent"
2158.     tools:context=".Welcome">
2159.     <TextView
2160.         android:id="@+id/mainword"
2161.         android:layout_width="fill_parent"
2162.         android:layout_height="fill_parent"
2163.         android:gravity="center"
2164.         android:textSize="22dp"
2165.         tools:ignore="MissingConstraints" />
2166. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2167. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2168.     xmlns:app="http://schemas.android.com/apk/res-auto"
2169.     xmlns:tools="http://schemas.android.com/tools"
2170.     android:layout_width="match_parent"
2171.     android:layout_height="match_parent"
2172.     tools:context=".Welcome">
2173.     <TextView
2174.         android:id="@+id/mainword"
2175.         android:layout_width="fill_parent"
2176.         android:layout_height="fill_parent"
2177.         android:gravity="center"
2178.         android:textSize="22dp"
2179.         tools:ignore="MissingConstraints" />
2180. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2181. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2182.     xmlns:app="http://schemas.android.com/apk/res-auto"
2183.     xmlns:tools="http://schemas.android.com/tools"
2184.     android:layout_width="match_parent"
2185.     android:layout_height="match_parent"
2186.     tools:context=".Welcome">
2187.     <TextView
2188.         android:id="@+id/mainword"
2189.         android:layout_width="fill_parent"
2190.         android:layout_height="fill_parent"
2191.         android:gravity="center"
2192.         android:textSize="22dp"
2193.         tools:ignore="MissingConstraints" />
2194. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2195. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2196.     xmlns:app="http://schemas.android.com/apk/res-auto"
2197.     xmlns:tools="http://schemas.android.com/tools"
2198.     android:layout_width="match_parent"
2199.     android:layout_height="match_parent"
2200.     tools:context=".Welcome">
2201.     <TextView
2202.         android:id="@+id/mainword"
2203.         android:layout_width="fill_parent"
2204.         android:layout_height="fill_parent"
2205.         android:gravity="center"
2206.         android:textSize="22dp"
2207.         tools:ignore="MissingConstraints" />
2208. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2209. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2210.     xmlns:app="http://schemas.android.com/apk/res-auto"
2211.     xmlns:tools="http://schemas.android.com/tools"
2212.     android:layout_width="match_parent"
2213.     android:layout_height="match_parent"
2214.     tools:context=".Welcome">
2215.     <TextView
2216.         android:id="@+id/mainword"
2217.         android:layout_width="fill_parent"
2218.         android:layout_height="fill_parent"
2219.         android:gravity="center"
2220.         android:textSize="22dp"
2221.         tools:ignore="MissingConstraints" />
2222. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2223. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2224.     xmlns:app="http://schemas.android.com/apk/res-auto"
2225.     xmlns:tools="http://schemas.android.com/tools"
2226.     android:layout_width="match_parent"
2227.     android:layout_height="match_parent"
2228.     tools:context=".Welcome">
2229.     <TextView
2230.         android:id="@+id/mainword"
2231.         android:layout_width="fill_parent"
2232.         android:layout_height="fill_parent"
2233.         android:gravity="center"
2234.         android:textSize="22dp"
2235.         tools:ignore="MissingConstraints" />
2236. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2237. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2238.     xmlns:app="http://schemas.android.com/apk/res-auto"
2239.     xmlns:tools="http://schemas.android.com/tools"
2240.     android:layout_width="match_parent"
2241.     android:layout_height="match_parent"
2242.     tools:context=".Welcome">
2243.     <TextView
2244.         android:id="@+id/mainword"
2245.         android:layout_width="fill_parent"
2246.         android:layout_height="fill_parent"
2247.         android:gravity="center"
2248.         android:textSize="22dp"
2249.         tools:ignore="MissingConstraints" />
2250. </androidx.constraintlayout.widget.ConstraintLayout>//将用户名存到SharedPreferences中
2251. <?xml version="1.0" encoding="utf-8"?>
2252. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2253.     xmlns:app="http://schemas.android.com/apk/res-auto"
2254.     xmlns:tools="http://schemas.android.com/tools"
2255.     android:layout_width="match_parent"
2256.     android:layout_height="match_parent"
2257.     tools:context=".Welcome">
2258.     <TextView
2259.         android:id="@+id/mainword"
2260.         android:layout_width="fill_parent"
2261.         android:layout_height="fill_parent"
2262.         android:gravity="center"
2263.         android:textSize="22dp"
2264.         tools:ignore="MissingConstraints" />
2265. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2266. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2267.     xmlns:app="http://schemas.android.com/apk/res-auto"
2268.     xmlns:tools="http://schemas.android.com/tools"
2269.     android:layout_width="match_parent"
2270.     android:layout_height="match_parent"
2271.     tools:context=".Welcome">
2272.     <TextView
2273.         android:id="@+id/mainword"
2274.         android:layout_width="fill_parent"
2275.         android:layout_height="fill_parent"
2276.         android:gravity="center"
2277.         android:textSize="22dp"
2278.         tools:ignore="MissingConstraints" />
2279. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2280. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2281.     xmlns:app="http://schemas.android.com/apk/res-auto"
2282.     xmlns:tools="http://schemas.android.com/tools"
2283.     android:layout_width="match_parent"
2284.     android:layout_height="match_parent"
2285.     tools:context=".Welcome">
2286.     <TextView
2287.         android:id="@+id/mainword"
2288.         android:layout_width="fill_parent"
2289.         android:layout_height="fill_parent"
2290.         android:gravity="center"
2291.         android:textSize="22dp"
2292.         tools:ignore="MissingConstraints" />
2293. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2294. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2295.     xmlns:app="http://schemas.android.com/apk/res-auto"
2296.     xmlns:tools="http://schemas.android.com/tools"
2297.     android:layout_width="match_parent"
2298.     android:layout_height="match_parent"
2299.     tools:context=".Welcome">
2300.     <TextView
2301.         android:id="@+id/mainword"
2302.         android:layout_width="fill_parent"
2303.         android:layout_height="fill_parent"
2304.         android:gravity="center"
2305.         android:textSize="22dp"
2306.         tools:ignore="MissingConstraints" />
2307. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2308. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2309.     xmlns:app="http://schemas.android.com/apk/res-auto"
2310.     xmlns:tools="http://schemas.android.com/tools"
2311.     android:layout_width="match_parent"
2312.     android:layout_height="match_parent"
2313.     tools:context=".Welcome">
2314.     <TextView
2315.         android:id="@+id/mainword"
2316.         android:layout_width="fill_parent"
2317.         android:layout_height="fill_parent"
2318.         android:gravity="center"
2319.         android:textSize="22dp"
2320.         tools:ignore="MissingConstraints" />
2321. </androidx.constraintlayout.widget.ConstraintLayout>startActivity(intent);
2322. <?xml version="1.0" encoding="utf-8"?>
2323. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2324.     xmlns:app="http://schemas.android.com/apk/res-auto"
2325.     xmlns:tools="http://schemas.android.com/tools"
2326.     android:layout_width="match_parent"
2327.     android:layout_height="match_parent"
2328.     tools:context=".Welcome">
2329.     <TextView
2330.         android:id="@+id/mainword"
2331.         android:layout_width="fill_parent"
2332.         android:layout_height="fill_parent"
2333.         android:gravity="center"
2334.         android:textSize="22dp"
2335.         tools:ignore="MissingConstraints" />
2336. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2337. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2338.     xmlns:app="http://schemas.android.com/apk/res-auto"
2339.     xmlns:tools="http://schemas.android.com/tools"
2340.     android:layout_width="match_parent"
2341.     android:layout_height="match_parent"
2342.     tools:context=".Welcome">
2343.     <TextView
2344.         android:id="@+id/mainword"
2345.         android:layout_width="fill_parent"
2346.         android:layout_height="fill_parent"
2347.         android:gravity="center"
2348.         android:textSize="22dp"
2349.         tools:ignore="MissingConstraints" />
2350. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2351. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2352.     xmlns:app="http://schemas.android.com/apk/res-auto"
2353.     xmlns:tools="http://schemas.android.com/tools"
2354.     android:layout_width="match_parent"
2355.     android:layout_height="match_parent"
2356.     tools:context=".Welcome">
2357.     <TextView
2358.         android:id="@+id/mainword"
2359.         android:layout_width="fill_parent"
2360.         android:layout_height="fill_parent"
2361.         android:gravity="center"
2362.         android:textSize="22dp"
2363.         tools:ignore="MissingConstraints" />
2364. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2365. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2366.     xmlns:app="http://schemas.android.com/apk/res-auto"
2367.     xmlns:tools="http://schemas.android.com/tools"
2368.     android:layout_width="match_parent"
2369.     android:layout_height="match_parent"
2370.     tools:context=".Welcome">
2371.     <TextView
2372.         android:id="@+id/mainword"
2373.         android:layout_width="fill_parent"
2374.         android:layout_height="fill_parent"
2375.         android:gravity="center"
2376.         android:textSize="22dp"
2377.         tools:ignore="MissingConstraints" />
2378. </androidx.constraintlayout.widget.ConstraintLayout>}
2379. <?xml version="1.0" encoding="utf-8"?>
2380. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2381.     xmlns:app="http://schemas.android.com/apk/res-auto"
2382.     xmlns:tools="http://schemas.android.com/tools"
2383.     android:layout_width="match_parent"
2384.     android:layout_height="match_parent"
2385.     tools:context=".Welcome">
2386.     <TextView
2387.         android:id="@+id/mainword"
2388.         android:layout_width="fill_parent"
2389.         android:layout_height="fill_parent"
2390.         android:gravity="center"
2391.         android:textSize="22dp"
2392.         tools:ignore="MissingConstraints" />
2393. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2394. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2395.     xmlns:app="http://schemas.android.com/apk/res-auto"
2396.     xmlns:tools="http://schemas.android.com/tools"
2397.     android:layout_width="match_parent"
2398.     android:layout_height="match_parent"
2399.     tools:context=".Welcome">
2400.     <TextView
2401.         android:id="@+id/mainword"
2402.         android:layout_width="fill_parent"
2403.         android:layout_height="fill_parent"
2404.         android:gravity="center"
2405.         android:textSize="22dp"
2406.         tools:ignore="MissingConstraints" />
2407. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2408. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2409.     xmlns:app="http://schemas.android.com/apk/res-auto"
2410.     xmlns:tools="http://schemas.android.com/tools"
2411.     android:layout_width="match_parent"
2412.     android:layout_height="match_parent"
2413.     tools:context=".Welcome">
2414.     <TextView
2415.         android:id="@+id/mainword"
2416.         android:layout_width="fill_parent"
2417.         android:layout_height="fill_parent"
2418.         android:gravity="center"
2419.         android:textSize="22dp"
2420.         tools:ignore="MissingConstraints" />
2421. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2422. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2423.     xmlns:app="http://schemas.android.com/apk/res-auto"
2424.     xmlns:tools="http://schemas.android.com/tools"
2425.     android:layout_width="match_parent"
2426.     android:layout_height="match_parent"
2427.     tools:context=".Welcome">
2428.     <TextView
2429.         android:id="@+id/mainword"
2430.         android:layout_width="fill_parent"
2431.         android:layout_height="fill_parent"
2432.         android:gravity="center"
2433.         android:textSize="22dp"
2434.         tools:ignore="MissingConstraints" />
2435. </androidx.constraintlayout.widget.ConstraintLayout>else{
2436. <?xml version="1.0" encoding="utf-8"?>
2437. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2438.     xmlns:app="http://schemas.android.com/apk/res-auto"
2439.     xmlns:tools="http://schemas.android.com/tools"
2440.     android:layout_width="match_parent"
2441.     android:layout_height="match_parent"
2442.     tools:context=".Welcome">
2443.     <TextView
2444.         android:id="@+id/mainword"
2445.         android:layout_width="fill_parent"
2446.         android:layout_height="fill_parent"
2447.         android:gravity="center"
2448.         android:textSize="22dp"
2449.         tools:ignore="MissingConstraints" />
2450. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2451. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2452.     xmlns:app="http://schemas.android.com/apk/res-auto"
2453.     xmlns:tools="http://schemas.android.com/tools"
2454.     android:layout_width="match_parent"
2455.     android:layout_height="match_parent"
2456.     tools:context=".Welcome">
2457.     <TextView
2458.         android:id="@+id/mainword"
2459.         android:layout_width="fill_parent"
2460.         android:layout_height="fill_parent"
2461.         android:gravity="center"
2462.         android:textSize="22dp"
2463.         tools:ignore="MissingConstraints" />
2464. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2465. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2466.     xmlns:app="http://schemas.android.com/apk/res-auto"
2467.     xmlns:tools="http://schemas.android.com/tools"
2468.     android:layout_width="match_parent"
2469.     android:layout_height="match_parent"
2470.     tools:context=".Welcome">
2471.     <TextView
2472.         android:id="@+id/mainword"
2473.         android:layout_width="fill_parent"
2474.         android:layout_height="fill_parent"
2475.         android:gravity="center"
2476.         android:textSize="22dp"
2477.         tools:ignore="MissingConstraints" />
2478. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2479. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2480.     xmlns:app="http://schemas.android.com/apk/res-auto"
2481.     xmlns:tools="http://schemas.android.com/tools"
2482.     android:layout_width="match_parent"
2483.     android:layout_height="match_parent"
2484.     tools:context=".Welcome">
2485.     <TextView
2486.         android:id="@+id/mainword"
2487.         android:layout_width="fill_parent"
2488.         android:layout_height="fill_parent"
2489.         android:gravity="center"
2490.         android:textSize="22dp"
2491.         tools:ignore="MissingConstraints" />
2492. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2493. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2494.     xmlns:app="http://schemas.android.com/apk/res-auto"
2495.     xmlns:tools="http://schemas.android.com/tools"
2496.     android:layout_width="match_parent"
2497.     android:layout_height="match_parent"
2498.     tools:context=".Welcome">
2499.     <TextView
2500.         android:id="@+id/mainword"
2501.         android:layout_width="fill_parent"
2502.         android:layout_height="fill_parent"
2503.         android:gravity="center"
2504.         android:textSize="22dp"
2505.         tools:ignore="MissingConstraints" />
2506. </androidx.constraintlayout.widget.ConstraintLayout>Toast.makeText(MainActivity.this,"用户名或密码错误！",Toast.LENGTH_LONG).show();<?xml version="1.0" encoding="utf-8"?>
2507. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2508.     xmlns:app="http://schemas.android.com/apk/res-auto"
2509.     xmlns:tools="http://schemas.android.com/tools"
2510.     android:layout_width="match_parent"
2511.     android:layout_height="match_parent"
2512.     tools:context=".Welcome">
2513.     <TextView
2514.         android:id="@+id/mainword"
2515.         android:layout_width="fill_parent"
2516.         android:layout_height="fill_parent"
2517.         android:gravity="center"
2518.         android:textSize="22dp"
2519.         tools:ignore="MissingConstraints" />
2520. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2521. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2522.     xmlns:app="http://schemas.android.com/apk/res-auto"
2523.     xmlns:tools="http://schemas.android.com/tools"
2524.     android:layout_width="match_parent"
2525.     android:layout_height="match_parent"
2526.     tools:context=".Welcome">
2527.     <TextView
2528.         android:id="@+id/mainword"
2529.         android:layout_width="fill_parent"
2530.         android:layout_height="fill_parent"
2531.         android:gravity="center"
2532.         android:textSize="22dp"
2533.         tools:ignore="MissingConstraints" />
2534. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2535. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2536.     xmlns:app="http://schemas.android.com/apk/res-auto"
2537.     xmlns:tools="http://schemas.android.com/tools"
2538.     android:layout_width="match_parent"
2539.     android:layout_height="match_parent"
2540.     tools:context=".Welcome">
2541.     <TextView
2542.         android:id="@+id/mainword"
2543.         android:layout_width="fill_parent"
2544.         android:layout_height="fill_parent"
2545.         android:gravity="center"
2546.         android:textSize="22dp"
2547.         tools:ignore="MissingConstraints" />
2548. </androidx.constraintlayout.widget.ConstraintLayout> //提示用户信息错误或没有账号
2549. <?xml version="1.0" encoding="utf-8"?>
2550. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2551.     xmlns:app="http://schemas.android.com/apk/res-auto"
2552.     xmlns:tools="http://schemas.android.com/tools"
2553.     android:layout_width="match_parent"
2554.     android:layout_height="match_parent"
2555.     tools:context=".Welcome">
2556.     <TextView
2557.         android:id="@+id/mainword"
2558.         android:layout_width="fill_parent"
2559.         android:layout_height="fill_parent"
2560.         android:gravity="center"
2561.         android:textSize="22dp"
2562.         tools:ignore="MissingConstraints" />
2563. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2564. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2565.     xmlns:app="http://schemas.android.com/apk/res-auto"
2566.     xmlns:tools="http://schemas.android.com/tools"
2567.     android:layout_width="match_parent"
2568.     android:layout_height="match_parent"
2569.     tools:context=".Welcome">
2570.     <TextView
2571.         android:id="@+id/mainword"
2572.         android:layout_width="fill_parent"
2573.         android:layout_height="fill_parent"
2574.         android:gravity="center"
2575.         android:textSize="22dp"
2576.         tools:ignore="MissingConstraints" />
2577. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2578. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2579.     xmlns:app="http://schemas.android.com/apk/res-auto"
2580.     xmlns:tools="http://schemas.android.com/tools"
2581.     android:layout_width="match_parent"
2582.     android:layout_height="match_parent"
2583.     tools:context=".Welcome">
2584.     <TextView
2585.         android:id="@+id/mainword"
2586.         android:layout_width="fill_parent"
2587.         android:layout_height="fill_parent"
2588.         android:gravity="center"
2589.         android:textSize="22dp"
2590.         tools:ignore="MissingConstraints" />
2591. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2592. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2593.     xmlns:app="http://schemas.android.com/apk/res-auto"
2594.     xmlns:tools="http://schemas.android.com/tools"
2595.     android:layout_width="match_parent"
2596.     android:layout_height="match_parent"
2597.     tools:context=".Welcome">
2598.     <TextView
2599.         android:id="@+id/mainword"
2600.         android:layout_width="fill_parent"
2601.         android:layout_height="fill_parent"
2602.         android:gravity="center"
2603.         android:textSize="22dp"
2604.         tools:ignore="MissingConstraints" />
2605. </androidx.constraintlayout.widget.ConstraintLayout>}
2607. <?xml version="1.0" encoding="utf-8"?>
2608. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2609.     xmlns:app="http://schemas.android.com/apk/res-auto"
2610.     xmlns:tools="http://schemas.android.com/tools"
2611.     android:layout_width="match_parent"
2612.     android:layout_height="match_parent"
2613.     tools:context=".Welcome">
2614.     <TextView
2615.         android:id="@+id/mainword"
2616.         android:layout_width="fill_parent"
2617.         android:layout_height="fill_parent"
2618.         android:gravity="center"
2619.         android:textSize="22dp"
2620.         tools:ignore="MissingConstraints" />
2621. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2622. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2623.     xmlns:app="http://schemas.android.com/apk/res-auto"
2624.     xmlns:tools="http://schemas.android.com/tools"
2625.     android:layout_width="match_parent"
2626.     android:layout_height="match_parent"
2627.     tools:context=".Welcome">
2628.     <TextView
2629.         android:id="@+id/mainword"
2630.         android:layout_width="fill_parent"
2631.         android:layout_height="fill_parent"
2632.         android:gravity="center"
2633.         android:textSize="22dp"
2634.         tools:ignore="MissingConstraints" />
2635. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2636. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2637.     xmlns:app="http://schemas.android.com/apk/res-auto"
2638.     xmlns:tools="http://schemas.android.com/tools"
2639.     android:layout_width="match_parent"
2640.     android:layout_height="match_parent"
2641.     tools:context=".Welcome">
2642.     <TextView
2643.         android:id="@+id/mainword"
2644.         android:layout_width="fill_parent"
2645.         android:layout_height="fill_parent"
2646.         android:gravity="center"
2647.         android:textSize="22dp"
2648.         tools:ignore="MissingConstraints" />
2649. </androidx.constraintlayout.widget.ConstraintLayout>}
2650. <?xml version="1.0" encoding="utf-8"?>
2651. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2652.     xmlns:app="http://schemas.android.com/apk/res-auto"
2653.     xmlns:tools="http://schemas.android.com/tools"
2654.     android:layout_width="match_parent"
2655.     android:layout_height="match_parent"
2656.     tools:context=".Welcome">
2657.     <TextView
2658.         android:id="@+id/mainword"
2659.         android:layout_width="fill_parent"
2660.         android:layout_height="fill_parent"
2661.         android:gravity="center"
2662.         android:textSize="22dp"
2663.         tools:ignore="MissingConstraints" />
2664. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2665. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2666.     xmlns:app="http://schemas.android.com/apk/res-auto"
2667.     xmlns:tools="http://schemas.android.com/tools"
2668.     android:layout_width="match_parent"
2669.     android:layout_height="match_parent"
2670.     tools:context=".Welcome">
2671.     <TextView
2672.         android:id="@+id/mainword"
2673.         android:layout_width="fill_parent"
2674.         android:layout_height="fill_parent"
2675.         android:gravity="center"
2676.         android:textSize="22dp"
2677.         tools:ignore="MissingConstraints" />
2678. </androidx.constraintlayout.widget.ConstraintLayout>});
2680. <?xml version="1.0" encoding="utf-8"?>
2681. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2682.     xmlns:app="http://schemas.android.com/apk/res-auto"
2683.     xmlns:tools="http://schemas.android.com/tools"
2684.     android:layout_width="match_parent"
2685.     android:layout_height="match_parent"
2686.     tools:context=".Welcome">
2687.     <TextView
2688.         android:id="@+id/mainword"
2689.         android:layout_width="fill_parent"
2690.         android:layout_height="fill_parent"
2691.         android:gravity="center"
2692.         android:textSize="22dp"
2693.         tools:ignore="MissingConstraints" />
2694. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2695. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2696.     xmlns:app="http://schemas.android.com/apk/res-auto"
2697.     xmlns:tools="http://schemas.android.com/tools"
2698.     android:layout_width="match_parent"
2699.     android:layout_height="match_parent"
2700.     tools:context=".Welcome">
2701.     <TextView
2702.         android:id="@+id/mainword"
2703.         android:layout_width="fill_parent"
2704.         android:layout_height="fill_parent"
2705.         android:gravity="center"
2706.         android:textSize="22dp"
2707.         tools:ignore="MissingConstraints" />
2708. </androidx.constraintlayout.widget.ConstraintLayout>btnreg.setOnClickListener(new View.OnClickListener() {<?xml version="1.0" encoding="utf-8"?>
2709. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2710.     xmlns:app="http://schemas.android.com/apk/res-auto"
2711.     xmlns:tools="http://schemas.android.com/tools"
2712.     android:layout_width="match_parent"
2713.     android:layout_height="match_parent"
2714.     tools:context=".Welcome">
2715.     <TextView
2716.         android:id="@+id/mainword"
2717.         android:layout_width="fill_parent"
2718.         android:layout_height="fill_parent"
2719.         android:gravity="center"
2720.         android:textSize="22dp"
2721.         tools:ignore="MissingConstraints" />
2722. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2723. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2724.     xmlns:app="http://schemas.android.com/apk/res-auto"
2725.     xmlns:tools="http://schemas.android.com/tools"
2726.     android:layout_width="match_parent"
2727.     android:layout_height="match_parent"
2728.     tools:context=".Welcome">
2729.     <TextView
2730.         android:id="@+id/mainword"
2731.         android:layout_width="fill_parent"
2732.         android:layout_height="fill_parent"
2733.         android:gravity="center"
2734.         android:textSize="22dp"
2735.         tools:ignore="MissingConstraints" />
2736. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2737. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2738.     xmlns:app="http://schemas.android.com/apk/res-auto"
2739.     xmlns:tools="http://schemas.android.com/tools"
2740.     android:layout_width="match_parent"
2741.     android:layout_height="match_parent"
2742.     tools:context=".Welcome">
2743.     <TextView
2744.         android:id="@+id/mainword"
2745.         android:layout_width="fill_parent"
2746.         android:layout_height="fill_parent"
2747.         android:gravity="center"
2748.         android:textSize="22dp"
2749.         tools:ignore="MissingConstraints" />
2750. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2751. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2752.     xmlns:app="http://schemas.android.com/apk/res-auto"
2753.     xmlns:tools="http://schemas.android.com/tools"
2754.     android:layout_width="match_parent"
2755.     android:layout_height="match_parent"
2756.     tools:context=".Welcome">
2757.     <TextView
2758.         android:id="@+id/mainword"
2759.         android:layout_width="fill_parent"
2760.         android:layout_height="fill_parent"
2761.         android:gravity="center"
2762.         android:textSize="22dp"
2763.         tools:ignore="MissingConstraints" />
2764. </androidx.constraintlayout.widget.ConstraintLayout>  //注册事件
2765. <?xml version="1.0" encoding="utf-8"?>
2766. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2767.     xmlns:app="http://schemas.android.com/apk/res-auto"
2768.     xmlns:tools="http://schemas.android.com/tools"
2769.     android:layout_width="match_parent"
2770.     android:layout_height="match_parent"
2771.     tools:context=".Welcome">
2772.     <TextView
2773.         android:id="@+id/mainword"
2774.         android:layout_width="fill_parent"
2775.         android:layout_height="fill_parent"
2776.         android:gravity="center"
2777.         android:textSize="22dp"
2778.         tools:ignore="MissingConstraints" />
2779. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2780. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2781.     xmlns:app="http://schemas.android.com/apk/res-auto"
2782.     xmlns:tools="http://schemas.android.com/tools"
2783.     android:layout_width="match_parent"
2784.     android:layout_height="match_parent"
2785.     tools:context=".Welcome">
2786.     <TextView
2787.         android:id="@+id/mainword"
2788.         android:layout_width="fill_parent"
2789.         android:layout_height="fill_parent"
2790.         android:gravity="center"
2791.         android:textSize="22dp"
2792.         tools:ignore="MissingConstraints" />
2793. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2794. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2795.     xmlns:app="http://schemas.android.com/apk/res-auto"
2796.     xmlns:tools="http://schemas.android.com/tools"
2797.     android:layout_width="match_parent"
2798.     android:layout_height="match_parent"
2799.     tools:context=".Welcome">
2800.     <TextView
2801.         android:id="@+id/mainword"
2802.         android:layout_width="fill_parent"
2803.         android:layout_height="fill_parent"
2804.         android:gravity="center"
2805.         android:textSize="22dp"
2806.         tools:ignore="MissingConstraints" />
2807. </androidx.constraintlayout.widget.ConstraintLayout>@Override
2808. <?xml version="1.0" encoding="utf-8"?>
2809. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2810.     xmlns:app="http://schemas.android.com/apk/res-auto"
2811.     xmlns:tools="http://schemas.android.com/tools"
2812.     android:layout_width="match_parent"
2813.     android:layout_height="match_parent"
2814.     tools:context=".Welcome">
2815.     <TextView
2816.         android:id="@+id/mainword"
2817.         android:layout_width="fill_parent"
2818.         android:layout_height="fill_parent"
2819.         android:gravity="center"
2820.         android:textSize="22dp"
2821.         tools:ignore="MissingConstraints" />
2822. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2823. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2824.     xmlns:app="http://schemas.android.com/apk/res-auto"
2825.     xmlns:tools="http://schemas.android.com/tools"
2826.     android:layout_width="match_parent"
2827.     android:layout_height="match_parent"
2828.     tools:context=".Welcome">
2829.     <TextView
2830.         android:id="@+id/mainword"
2831.         android:layout_width="fill_parent"
2832.         android:layout_height="fill_parent"
2833.         android:gravity="center"
2834.         android:textSize="22dp"
2835.         tools:ignore="MissingConstraints" />
2836. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2837. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2838.     xmlns:app="http://schemas.android.com/apk/res-auto"
2839.     xmlns:tools="http://schemas.android.com/tools"
2840.     android:layout_width="match_parent"
2841.     android:layout_height="match_parent"
2842.     tools:context=".Welcome">
2843.     <TextView
2844.         android:id="@+id/mainword"
2845.         android:layout_width="fill_parent"
2846.         android:layout_height="fill_parent"
2847.         android:gravity="center"
2848.         android:textSize="22dp"
2849.         tools:ignore="MissingConstraints" />
2850. </androidx.constraintlayout.widget.ConstraintLayout>public void onClick(View v) {
2852. <?xml version="1.0" encoding="utf-8"?>
2853. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2854.     xmlns:app="http://schemas.android.com/apk/res-auto"
2855.     xmlns:tools="http://schemas.android.com/tools"
2856.     android:layout_width="match_parent"
2857.     android:layout_height="match_parent"
2858.     tools:context=".Welcome">
2859.     <TextView
2860.         android:id="@+id/mainword"
2861.         android:layout_width="fill_parent"
2862.         android:layout_height="fill_parent"
2863.         android:gravity="center"
2864.         android:textSize="22dp"
2865.         tools:ignore="MissingConstraints" />
2866. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2867. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2868.     xmlns:app="http://schemas.android.com/apk/res-auto"
2869.     xmlns:tools="http://schemas.android.com/tools"
2870.     android:layout_width="match_parent"
2871.     android:layout_height="match_parent"
2872.     tools:context=".Welcome">
2873.     <TextView
2874.         android:id="@+id/mainword"
2875.         android:layout_width="fill_parent"
2876.         android:layout_height="fill_parent"
2877.         android:gravity="center"
2878.         android:textSize="22dp"
2879.         tools:ignore="MissingConstraints" />
2880. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2881. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2882.     xmlns:app="http://schemas.android.com/apk/res-auto"
2883.     xmlns:tools="http://schemas.android.com/tools"
2884.     android:layout_width="match_parent"
2885.     android:layout_height="match_parent"
2886.     tools:context=".Welcome">
2887.     <TextView
2888.         android:id="@+id/mainword"
2889.         android:layout_width="fill_parent"
2890.         android:layout_height="fill_parent"
2891.         android:gravity="center"
2892.         android:textSize="22dp"
2893.         tools:ignore="MissingConstraints" />
2894. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2895. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2896.     xmlns:app="http://schemas.android.com/apk/res-auto"
2897.     xmlns:tools="http://schemas.android.com/tools"
2898.     android:layout_width="match_parent"
2899.     android:layout_height="match_parent"
2900.     tools:context=".Welcome">
2901.     <TextView
2902.         android:id="@+id/mainword"
2903.         android:layout_width="fill_parent"
2904.         android:layout_height="fill_parent"
2905.         android:gravity="center"
2906.         android:textSize="22dp"
2907.         tools:ignore="MissingConstraints" />
2908. </androidx.constraintlayout.widget.ConstraintLayout>Intent intent = new Intent();
2909. <?xml version="1.0" encoding="utf-8"?>
2910. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2911.     xmlns:app="http://schemas.android.com/apk/res-auto"
2912.     xmlns:tools="http://schemas.android.com/tools"
2913.     android:layout_width="match_parent"
2914.     android:layout_height="match_parent"
2915.     tools:context=".Welcome">
2916.     <TextView
2917.         android:id="@+id/mainword"
2918.         android:layout_width="fill_parent"
2919.         android:layout_height="fill_parent"
2920.         android:gravity="center"
2921.         android:textSize="22dp"
2922.         tools:ignore="MissingConstraints" />
2923. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2924. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2925.     xmlns:app="http://schemas.android.com/apk/res-auto"
2926.     xmlns:tools="http://schemas.android.com/tools"
2927.     android:layout_width="match_parent"
2928.     android:layout_height="match_parent"
2929.     tools:context=".Welcome">
2930.     <TextView
2931.         android:id="@+id/mainword"
2932.         android:layout_width="fill_parent"
2933.         android:layout_height="fill_parent"
2934.         android:gravity="center"
2935.         android:textSize="22dp"
2936.         tools:ignore="MissingConstraints" />
2937. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2938. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2939.     xmlns:app="http://schemas.android.com/apk/res-auto"
2940.     xmlns:tools="http://schemas.android.com/tools"
2941.     android:layout_width="match_parent"
2942.     android:layout_height="match_parent"
2943.     tools:context=".Welcome">
2944.     <TextView
2945.         android:id="@+id/mainword"
2946.         android:layout_width="fill_parent"
2947.         android:layout_height="fill_parent"
2948.         android:gravity="center"
2949.         android:textSize="22dp"
2950.         tools:ignore="MissingConstraints" />
2951. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2952. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2953.     xmlns:app="http://schemas.android.com/apk/res-auto"
2954.     xmlns:tools="http://schemas.android.com/tools"
2955.     android:layout_width="match_parent"
2956.     android:layout_height="match_parent"
2957.     tools:context=".Welcome">
2958.     <TextView
2959.         android:id="@+id/mainword"
2960.         android:layout_width="fill_parent"
2961.         android:layout_height="fill_parent"
2962.         android:gravity="center"
2963.         android:textSize="22dp"
2964.         tools:ignore="MissingConstraints" />
2965. </androidx.constraintlayout.widget.ConstraintLayout>intent.setClass(MainActivity.this,Register.class);<?xml version="1.0" encoding="utf-8"?>
2966. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2967.     xmlns:app="http://schemas.android.com/apk/res-auto"
2968.     xmlns:tools="http://schemas.android.com/tools"
2969.     android:layout_width="match_parent"
2970.     android:layout_height="match_parent"
2971.     tools:context=".Welcome">
2972.     <TextView
2973.         android:id="@+id/mainword"
2974.         android:layout_width="fill_parent"
2975.         android:layout_height="fill_parent"
2976.         android:gravity="center"
2977.         android:textSize="22dp"
2978.         tools:ignore="MissingConstraints" />
2979. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2980. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2981.     xmlns:app="http://schemas.android.com/apk/res-auto"
2982.     xmlns:tools="http://schemas.android.com/tools"
2983.     android:layout_width="match_parent"
2984.     android:layout_height="match_parent"
2985.     tools:context=".Welcome">
2986.     <TextView
2987.         android:id="@+id/mainword"
2988.         android:layout_width="fill_parent"
2989.         android:layout_height="fill_parent"
2990.         android:gravity="center"
2991.         android:textSize="22dp"
2992.         tools:ignore="MissingConstraints" />
2993. </androidx.constraintlayout.widget.ConstraintLayout>  //跳转到注册页面
2994. <?xml version="1.0" encoding="utf-8"?>
2995. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2996.     xmlns:app="http://schemas.android.com/apk/res-auto"
2997.     xmlns:tools="http://schemas.android.com/tools"
2998.     android:layout_width="match_parent"
2999.     android:layout_height="match_parent"
3000.     tools:context=".Welcome">
3001.     <TextView
3002.         android:id="@+id/mainword"
3003.         android:layout_width="fill_parent"
3004.         android:layout_height="fill_parent"
3005.         android:gravity="center"
3006.         android:textSize="22dp"
3007.         tools:ignore="MissingConstraints" />
3008. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3009. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3010.     xmlns:app="http://schemas.android.com/apk/res-auto"
3011.     xmlns:tools="http://schemas.android.com/tools"
3012.     android:layout_width="match_parent"
3013.     android:layout_height="match_parent"
3014.     tools:context=".Welcome">
3015.     <TextView
3016.         android:id="@+id/mainword"
3017.         android:layout_width="fill_parent"
3018.         android:layout_height="fill_parent"
3019.         android:gravity="center"
3020.         android:textSize="22dp"
3021.         tools:ignore="MissingConstraints" />
3022. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3023. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3024.     xmlns:app="http://schemas.android.com/apk/res-auto"
3025.     xmlns:tools="http://schemas.android.com/tools"
3026.     android:layout_width="match_parent"
3027.     android:layout_height="match_parent"
3028.     tools:context=".Welcome">
3029.     <TextView
3030.         android:id="@+id/mainword"
3031.         android:layout_width="fill_parent"
3032.         android:layout_height="fill_parent"
3033.         android:gravity="center"
3034.         android:textSize="22dp"
3035.         tools:ignore="MissingConstraints" />
3036. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3037. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3038.     xmlns:app="http://schemas.android.com/apk/res-auto"
3039.     xmlns:tools="http://schemas.android.com/tools"
3040.     android:layout_width="match_parent"
3041.     android:layout_height="match_parent"
3042.     tools:context=".Welcome">
3043.     <TextView
3044.         android:id="@+id/mainword"
3045.         android:layout_width="fill_parent"
3046.         android:layout_height="fill_parent"
3047.         android:gravity="center"
3048.         android:textSize="22dp"
3049.         tools:ignore="MissingConstraints" />
3050. </androidx.constraintlayout.widget.ConstraintLayout>startActivity(intent);
3051. <?xml version="1.0" encoding="utf-8"?>
3052. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3053.     xmlns:app="http://schemas.android.com/apk/res-auto"
3054.     xmlns:tools="http://schemas.android.com/tools"
3055.     android:layout_width="match_parent"
3056.     android:layout_height="match_parent"
3057.     tools:context=".Welcome">
3058.     <TextView
3059.         android:id="@+id/mainword"
3060.         android:layout_width="fill_parent"
3061.         android:layout_height="fill_parent"
3062.         android:gravity="center"
3063.         android:textSize="22dp"
3064.         tools:ignore="MissingConstraints" />
3065. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3066. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3067.     xmlns:app="http://schemas.android.com/apk/res-auto"
3068.     xmlns:tools="http://schemas.android.com/tools"
3069.     android:layout_width="match_parent"
3070.     android:layout_height="match_parent"
3071.     tools:context=".Welcome">
3072.     <TextView
3073.         android:id="@+id/mainword"
3074.         android:layout_width="fill_parent"
3075.         android:layout_height="fill_parent"
3076.         android:gravity="center"
3077.         android:textSize="22dp"
3078.         tools:ignore="MissingConstraints" />
3079. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3080. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3081.     xmlns:app="http://schemas.android.com/apk/res-auto"
3082.     xmlns:tools="http://schemas.android.com/tools"
3083.     android:layout_width="match_parent"
3084.     android:layout_height="match_parent"
3085.     tools:context=".Welcome">
3086.     <TextView
3087.         android:id="@+id/mainword"
3088.         android:layout_width="fill_parent"
3089.         android:layout_height="fill_parent"
3090.         android:gravity="center"
3091.         android:textSize="22dp"
3092.         tools:ignore="MissingConstraints" />
3093. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3094. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3095.     xmlns:app="http://schemas.android.com/apk/res-auto"
3096.     xmlns:tools="http://schemas.android.com/tools"
3097.     android:layout_width="match_parent"
3098.     android:layout_height="match_parent"
3099.     tools:context=".Welcome">
3100.     <TextView
3101.         android:id="@+id/mainword"
3102.         android:layout_width="fill_parent"
3103.         android:layout_height="fill_parent"
3104.         android:gravity="center"
3105.         android:textSize="22dp"
3106.         tools:ignore="MissingConstraints" />
3107. </androidx.constraintlayout.widget.ConstraintLayout>Toast.makeText(MainActivity.this,"前往注册！",Toast.LENGTH_SHORT).show();
3108. <?xml version="1.0" encoding="utf-8"?>
3109. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3110.     xmlns:app="http://schemas.android.com/apk/res-auto"
3111.     xmlns:tools="http://schemas.android.com/tools"
3112.     android:layout_width="match_parent"
3113.     android:layout_height="match_parent"
3114.     tools:context=".Welcome">
3115.     <TextView
3116.         android:id="@+id/mainword"
3117.         android:layout_width="fill_parent"
3118.         android:layout_height="fill_parent"
3119.         android:gravity="center"
3120.         android:textSize="22dp"
3121.         tools:ignore="MissingConstraints" />
3122. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3123. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3124.     xmlns:app="http://schemas.android.com/apk/res-auto"
3125.     xmlns:tools="http://schemas.android.com/tools"
3126.     android:layout_width="match_parent"
3127.     android:layout_height="match_parent"
3128.     tools:context=".Welcome">
3129.     <TextView
3130.         android:id="@+id/mainword"
3131.         android:layout_width="fill_parent"
3132.         android:layout_height="fill_parent"
3133.         android:gravity="center"
3134.         android:textSize="22dp"
3135.         tools:ignore="MissingConstraints" />
3136. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3137. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3138.     xmlns:app="http://schemas.android.com/apk/res-auto"
3139.     xmlns:tools="http://schemas.android.com/tools"
3140.     android:layout_width="match_parent"
3141.     android:layout_height="match_parent"
3142.     tools:context=".Welcome">
3143.     <TextView
3144.         android:id="@+id/mainword"
3145.         android:layout_width="fill_parent"
3146.         android:layout_height="fill_parent"
3147.         android:gravity="center"
3148.         android:textSize="22dp"
3149.         tools:ignore="MissingConstraints" />
3150. </androidx.constraintlayout.widget.ConstraintLayout>}
3151. <?xml version="1.0" encoding="utf-8"?>
3152. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3153.     xmlns:app="http://schemas.android.com/apk/res-auto"
3154.     xmlns:tools="http://schemas.android.com/tools"
3155.     android:layout_width="match_parent"
3156.     android:layout_height="match_parent"
3157.     tools:context=".Welcome">
3158.     <TextView
3159.         android:id="@+id/mainword"
3160.         android:layout_width="fill_parent"
3161.         android:layout_height="fill_parent"
3162.         android:gravity="center"
3163.         android:textSize="22dp"
3164.         tools:ignore="MissingConstraints" />
3165. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3166. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3167.     xmlns:app="http://schemas.android.com/apk/res-auto"
3168.     xmlns:tools="http://schemas.android.com/tools"
3169.     android:layout_width="match_parent"
3170.     android:layout_height="match_parent"
3171.     tools:context=".Welcome">
3172.     <TextView
3173.         android:id="@+id/mainword"
3174.         android:layout_width="fill_parent"
3175.         android:layout_height="fill_parent"
3176.         android:gravity="center"
3177.         android:textSize="22dp"
3178.         tools:ignore="MissingConstraints" />
3179. </androidx.constraintlayout.widget.ConstraintLayout>});
3180. <?xml version="1.0" encoding="utf-8"?>
3181. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3182.     xmlns:app="http://schemas.android.com/apk/res-auto"
3183.     xmlns:tools="http://schemas.android.com/tools"
3184.     android:layout_width="match_parent"
3185.     android:layout_height="match_parent"
3186.     tools:context=".Welcome">
3187.     <TextView
3188.         android:id="@+id/mainword"
3189.         android:layout_width="fill_parent"
3190.         android:layout_height="fill_parent"
3191.         android:gravity="center"
3192.         android:textSize="22dp"
3193.         tools:ignore="MissingConstraints" />
3194. </androidx.constraintlayout.widget.ConstraintLayout>}
3195. }

复制代码

这是对应的布局文件activity_main.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. <?xml version="1.0" encoding="utf-8"?>
4. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
5.     xmlns:app="http://schemas.android.com/apk/res-auto"
6.     xmlns:tools="http://schemas.android.com/tools"
7.     android:layout_width="match_parent"
8.     android:layout_height="match_parent"
9.     tools:context=".Welcome">
10.     <TextView
11.         android:id="@+id/mainword"
12.         android:layout_width="fill_parent"
13.         android:layout_height="fill_parent"
14.         android:gravity="center"
15.         android:textSize="22dp"
16.         tools:ignore="MissingConstraints" />
17. </androidx.constraintlayout.widget.ConstraintLayout>xmlns:app="http://schemas.android.com/apk/res-auto"
18. <?xml version="1.0" encoding="utf-8"?>
19. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
20.     xmlns:app="http://schemas.android.com/apk/res-auto"
21.     xmlns:tools="http://schemas.android.com/tools"
22.     android:layout_width="match_parent"
23.     android:layout_height="match_parent"
24.     tools:context=".Welcome">
25.     <TextView
26.         android:id="@+id/mainword"
27.         android:layout_width="fill_parent"
28.         android:layout_height="fill_parent"
29.         android:gravity="center"
30.         android:textSize="22dp"
31.         tools:ignore="MissingConstraints" />
32. </androidx.constraintlayout.widget.ConstraintLayout>xmlns:tools="http://schemas.android.com/tools"
33. <?xml version="1.0" encoding="utf-8"?>
34. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
35.     xmlns:app="http://schemas.android.com/apk/res-auto"
36.     xmlns:tools="http://schemas.android.com/tools"
37.     android:layout_width="match_parent"
38.     android:layout_height="match_parent"
39.     tools:context=".Welcome">
40.     <TextView
41.         android:id="@+id/mainword"
42.         android:layout_width="fill_parent"
43.         android:layout_height="fill_parent"
44.         android:gravity="center"
45.         android:textSize="22dp"
46.         tools:ignore="MissingConstraints" />
47. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="match_parent"
48. <?xml version="1.0" encoding="utf-8"?>
49. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
50.     xmlns:app="http://schemas.android.com/apk/res-auto"
51.     xmlns:tools="http://schemas.android.com/tools"
52.     android:layout_width="match_parent"
53.     android:layout_height="match_parent"
54.     tools:context=".Welcome">
55.     <TextView
56.         android:id="@+id/mainword"
57.         android:layout_width="fill_parent"
58.         android:layout_height="fill_parent"
59.         android:gravity="center"
60.         android:textSize="22dp"
61.         tools:ignore="MissingConstraints" />
62. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="match_parent"
63. <?xml version="1.0" encoding="utf-8"?>
64. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
65.     xmlns:app="http://schemas.android.com/apk/res-auto"
66.     xmlns:tools="http://schemas.android.com/tools"
67.     android:layout_width="match_parent"
68.     android:layout_height="match_parent"
69.     tools:context=".Welcome">
70.     <TextView
71.         android:id="@+id/mainword"
72.         android:layout_width="fill_parent"
73.         android:layout_height="fill_parent"
74.         android:gravity="center"
75.         android:textSize="22dp"
76.         tools:ignore="MissingConstraints" />
77. </androidx.constraintlayout.widget.ConstraintLayout>tools:context=".MainActivity">
79. <?xml version="1.0" encoding="utf-8"?>
80. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
81.     xmlns:app="http://schemas.android.com/apk/res-auto"
82.     xmlns:tools="http://schemas.android.com/tools"
83.     android:layout_width="match_parent"
84.     android:layout_height="match_parent"
85.     tools:context=".Welcome">
86.     <TextView
87.         android:id="@+id/mainword"
88.         android:layout_width="fill_parent"
89.         android:layout_height="fill_parent"
90.         android:gravity="center"
91.         android:textSize="22dp"
92.         tools:ignore="MissingConstraints" />
93. </androidx.constraintlayout.widget.ConstraintLayout><LinearLayout
94. <?xml version="1.0" encoding="utf-8"?>
95. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
96.     xmlns:app="http://schemas.android.com/apk/res-auto"
97.     xmlns:tools="http://schemas.android.com/tools"
98.     android:layout_width="match_parent"
99.     android:layout_height="match_parent"
100.     tools:context=".Welcome">
101.     <TextView
102.         android:id="@+id/mainword"
103.         android:layout_width="fill_parent"
104.         android:layout_height="fill_parent"
105.         android:gravity="center"
106.         android:textSize="22dp"
107.         tools:ignore="MissingConstraints" />
108. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
109. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
110.     xmlns:app="http://schemas.android.com/apk/res-auto"
111.     xmlns:tools="http://schemas.android.com/tools"
112.     android:layout_width="match_parent"
113.     android:layout_height="match_parent"
114.     tools:context=".Welcome">
115.     <TextView
116.         android:id="@+id/mainword"
117.         android:layout_width="fill_parent"
118.         android:layout_height="fill_parent"
119.         android:gravity="center"
120.         android:textSize="22dp"
121.         tools:ignore="MissingConstraints" />
122. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="match_parent"
123. <?xml version="1.0" encoding="utf-8"?>
124. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
125.     xmlns:app="http://schemas.android.com/apk/res-auto"
126.     xmlns:tools="http://schemas.android.com/tools"
127.     android:layout_width="match_parent"
128.     android:layout_height="match_parent"
129.     tools:context=".Welcome">
130.     <TextView
131.         android:id="@+id/mainword"
132.         android:layout_width="fill_parent"
133.         android:layout_height="fill_parent"
134.         android:gravity="center"
135.         android:textSize="22dp"
136.         tools:ignore="MissingConstraints" />
137. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
138. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
139.     xmlns:app="http://schemas.android.com/apk/res-auto"
140.     xmlns:tools="http://schemas.android.com/tools"
141.     android:layout_width="match_parent"
142.     android:layout_height="match_parent"
143.     tools:context=".Welcome">
144.     <TextView
145.         android:id="@+id/mainword"
146.         android:layout_width="fill_parent"
147.         android:layout_height="fill_parent"
148.         android:gravity="center"
149.         android:textSize="22dp"
150.         tools:ignore="MissingConstraints" />
151. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="match_parent"
152. <?xml version="1.0" encoding="utf-8"?>
153. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
154.     xmlns:app="http://schemas.android.com/apk/res-auto"
155.     xmlns:tools="http://schemas.android.com/tools"
156.     android:layout_width="match_parent"
157.     android:layout_height="match_parent"
158.     tools:context=".Welcome">
159.     <TextView
160.         android:id="@+id/mainword"
161.         android:layout_width="fill_parent"
162.         android:layout_height="fill_parent"
163.         android:gravity="center"
164.         android:textSize="22dp"
165.         tools:ignore="MissingConstraints" />
166. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
167. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
168.     xmlns:app="http://schemas.android.com/apk/res-auto"
169.     xmlns:tools="http://schemas.android.com/tools"
170.     android:layout_width="match_parent"
171.     android:layout_height="match_parent"
172.     tools:context=".Welcome">
173.     <TextView
174.         android:id="@+id/mainword"
175.         android:layout_width="fill_parent"
176.         android:layout_height="fill_parent"
177.         android:gravity="center"
178.         android:textSize="22dp"
179.         tools:ignore="MissingConstraints" />
180. </androidx.constraintlayout.widget.ConstraintLayout>android:orientation="vertical">
181. <?xml version="1.0" encoding="utf-8"?>
182. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
183.     xmlns:app="http://schemas.android.com/apk/res-auto"
184.     xmlns:tools="http://schemas.android.com/tools"
185.     android:layout_width="match_parent"
186.     android:layout_height="match_parent"
187.     tools:context=".Welcome">
188.     <TextView
189.         android:id="@+id/mainword"
190.         android:layout_width="fill_parent"
191.         android:layout_height="fill_parent"
192.         android:gravity="center"
193.         android:textSize="22dp"
194.         tools:ignore="MissingConstraints" />
195. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
196. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
197.     xmlns:app="http://schemas.android.com/apk/res-auto"
198.     xmlns:tools="http://schemas.android.com/tools"
199.     android:layout_width="match_parent"
200.     android:layout_height="match_parent"
201.     tools:context=".Welcome">
202.     <TextView
203.         android:id="@+id/mainword"
204.         android:layout_width="fill_parent"
205.         android:layout_height="fill_parent"
206.         android:gravity="center"
207.         android:textSize="22dp"
208.         tools:ignore="MissingConstraints" />
209. </androidx.constraintlayout.widget.ConstraintLayout><LinearLayout
210. <?xml version="1.0" encoding="utf-8"?>
211. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
212.     xmlns:app="http://schemas.android.com/apk/res-auto"
213.     xmlns:tools="http://schemas.android.com/tools"
214.     android:layout_width="match_parent"
215.     android:layout_height="match_parent"
216.     tools:context=".Welcome">
217.     <TextView
218.         android:id="@+id/mainword"
219.         android:layout_width="fill_parent"
220.         android:layout_height="fill_parent"
221.         android:gravity="center"
222.         android:textSize="22dp"
223.         tools:ignore="MissingConstraints" />
224. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
225. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
226.     xmlns:app="http://schemas.android.com/apk/res-auto"
227.     xmlns:tools="http://schemas.android.com/tools"
228.     android:layout_width="match_parent"
229.     android:layout_height="match_parent"
230.     tools:context=".Welcome">
231.     <TextView
232.         android:id="@+id/mainword"
233.         android:layout_width="fill_parent"
234.         android:layout_height="fill_parent"
235.         android:gravity="center"
236.         android:textSize="22dp"
237.         tools:ignore="MissingConstraints" />
238. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
239. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
240.     xmlns:app="http://schemas.android.com/apk/res-auto"
241.     xmlns:tools="http://schemas.android.com/tools"
242.     android:layout_width="match_parent"
243.     android:layout_height="match_parent"
244.     tools:context=".Welcome">
245.     <TextView
246.         android:id="@+id/mainword"
247.         android:layout_width="fill_parent"
248.         android:layout_height="fill_parent"
249.         android:gravity="center"
250.         android:textSize="22dp"
251.         tools:ignore="MissingConstraints" />
252. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="match_parent"
253. <?xml version="1.0" encoding="utf-8"?>
254. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
255.     xmlns:app="http://schemas.android.com/apk/res-auto"
256.     xmlns:tools="http://schemas.android.com/tools"
257.     android:layout_width="match_parent"
258.     android:layout_height="match_parent"
259.     tools:context=".Welcome">
260.     <TextView
261.         android:id="@+id/mainword"
262.         android:layout_width="fill_parent"
263.         android:layout_height="fill_parent"
264.         android:gravity="center"
265.         android:textSize="22dp"
266.         tools:ignore="MissingConstraints" />
267. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
268. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
269.     xmlns:app="http://schemas.android.com/apk/res-auto"
270.     xmlns:tools="http://schemas.android.com/tools"
271.     android:layout_width="match_parent"
272.     android:layout_height="match_parent"
273.     tools:context=".Welcome">
274.     <TextView
275.         android:id="@+id/mainword"
276.         android:layout_width="fill_parent"
277.         android:layout_height="fill_parent"
278.         android:gravity="center"
279.         android:textSize="22dp"
280.         tools:ignore="MissingConstraints" />
281. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
282. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
283.     xmlns:app="http://schemas.android.com/apk/res-auto"
284.     xmlns:tools="http://schemas.android.com/tools"
285.     android:layout_width="match_parent"
286.     android:layout_height="match_parent"
287.     tools:context=".Welcome">
288.     <TextView
289.         android:id="@+id/mainword"
290.         android:layout_width="fill_parent"
291.         android:layout_height="fill_parent"
292.         android:gravity="center"
293.         android:textSize="22dp"
294.         tools:ignore="MissingConstraints" />
295. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
296. <?xml version="1.0" encoding="utf-8"?>
297. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
298.     xmlns:app="http://schemas.android.com/apk/res-auto"
299.     xmlns:tools="http://schemas.android.com/tools"
300.     android:layout_width="match_parent"
301.     android:layout_height="match_parent"
302.     tools:context=".Welcome">
303.     <TextView
304.         android:id="@+id/mainword"
305.         android:layout_width="fill_parent"
306.         android:layout_height="fill_parent"
307.         android:gravity="center"
308.         android:textSize="22dp"
309.         tools:ignore="MissingConstraints" />
310. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
311. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
312.     xmlns:app="http://schemas.android.com/apk/res-auto"
313.     xmlns:tools="http://schemas.android.com/tools"
314.     android:layout_width="match_parent"
315.     android:layout_height="match_parent"
316.     tools:context=".Welcome">
317.     <TextView
318.         android:id="@+id/mainword"
319.         android:layout_width="fill_parent"
320.         android:layout_height="fill_parent"
321.         android:gravity="center"
322.         android:textSize="22dp"
323.         tools:ignore="MissingConstraints" />
324. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
325. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
326.     xmlns:app="http://schemas.android.com/apk/res-auto"
327.     xmlns:tools="http://schemas.android.com/tools"
328.     android:layout_width="match_parent"
329.     android:layout_height="match_parent"
330.     tools:context=".Welcome">
331.     <TextView
332.         android:id="@+id/mainword"
333.         android:layout_width="fill_parent"
334.         android:layout_height="fill_parent"
335.         android:gravity="center"
336.         android:textSize="22dp"
337.         tools:ignore="MissingConstraints" />
338. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_marginTop="10dp"
339. <?xml version="1.0" encoding="utf-8"?>
340. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
341.     xmlns:app="http://schemas.android.com/apk/res-auto"
342.     xmlns:tools="http://schemas.android.com/tools"
343.     android:layout_width="match_parent"
344.     android:layout_height="match_parent"
345.     tools:context=".Welcome">
346.     <TextView
347.         android:id="@+id/mainword"
348.         android:layout_width="fill_parent"
349.         android:layout_height="fill_parent"
350.         android:gravity="center"
351.         android:textSize="22dp"
352.         tools:ignore="MissingConstraints" />
353. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
354. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
355.     xmlns:app="http://schemas.android.com/apk/res-auto"
356.     xmlns:tools="http://schemas.android.com/tools"
357.     android:layout_width="match_parent"
358.     android:layout_height="match_parent"
359.     tools:context=".Welcome">
360.     <TextView
361.         android:id="@+id/mainword"
362.         android:layout_width="fill_parent"
363.         android:layout_height="fill_parent"
364.         android:gravity="center"
365.         android:textSize="22dp"
366.         tools:ignore="MissingConstraints" />
367. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
368. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
369.     xmlns:app="http://schemas.android.com/apk/res-auto"
370.     xmlns:tools="http://schemas.android.com/tools"
371.     android:layout_width="match_parent"
372.     android:layout_height="match_parent"
373.     tools:context=".Welcome">
374.     <TextView
375.         android:id="@+id/mainword"
376.         android:layout_width="fill_parent"
377.         android:layout_height="fill_parent"
378.         android:gravity="center"
379.         android:textSize="22dp"
380.         tools:ignore="MissingConstraints" />
381. </androidx.constraintlayout.widget.ConstraintLayout>android:orientation="horizontal">
382. <?xml version="1.0" encoding="utf-8"?>
383. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
384.     xmlns:app="http://schemas.android.com/apk/res-auto"
385.     xmlns:tools="http://schemas.android.com/tools"
386.     android:layout_width="match_parent"
387.     android:layout_height="match_parent"
388.     tools:context=".Welcome">
389.     <TextView
390.         android:id="@+id/mainword"
391.         android:layout_width="fill_parent"
392.         android:layout_height="fill_parent"
393.         android:gravity="center"
394.         android:textSize="22dp"
395.         tools:ignore="MissingConstraints" />
396. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
397. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
398.     xmlns:app="http://schemas.android.com/apk/res-auto"
399.     xmlns:tools="http://schemas.android.com/tools"
400.     android:layout_width="match_parent"
401.     android:layout_height="match_parent"
402.     tools:context=".Welcome">
403.     <TextView
404.         android:id="@+id/mainword"
405.         android:layout_width="fill_parent"
406.         android:layout_height="fill_parent"
407.         android:gravity="center"
408.         android:textSize="22dp"
409.         tools:ignore="MissingConstraints" />
410. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
411. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
412.     xmlns:app="http://schemas.android.com/apk/res-auto"
413.     xmlns:tools="http://schemas.android.com/tools"
414.     android:layout_width="match_parent"
415.     android:layout_height="match_parent"
416.     tools:context=".Welcome">
417.     <TextView
418.         android:id="@+id/mainword"
419.         android:layout_width="fill_parent"
420.         android:layout_height="fill_parent"
421.         android:gravity="center"
422.         android:textSize="22dp"
423.         tools:ignore="MissingConstraints" />
424. </androidx.constraintlayout.widget.ConstraintLayout><TextView
425. <?xml version="1.0" encoding="utf-8"?>
426. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
427.     xmlns:app="http://schemas.android.com/apk/res-auto"
428.     xmlns:tools="http://schemas.android.com/tools"
429.     android:layout_width="match_parent"
430.     android:layout_height="match_parent"
431.     tools:context=".Welcome">
432.     <TextView
433.         android:id="@+id/mainword"
434.         android:layout_width="fill_parent"
435.         android:layout_height="fill_parent"
436.         android:gravity="center"
437.         android:textSize="22dp"
438.         tools:ignore="MissingConstraints" />
439. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
440. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
441.     xmlns:app="http://schemas.android.com/apk/res-auto"
442.     xmlns:tools="http://schemas.android.com/tools"
443.     android:layout_width="match_parent"
444.     android:layout_height="match_parent"
445.     tools:context=".Welcome">
446.     <TextView
447.         android:id="@+id/mainword"
448.         android:layout_width="fill_parent"
449.         android:layout_height="fill_parent"
450.         android:gravity="center"
451.         android:textSize="22dp"
452.         tools:ignore="MissingConstraints" />
453. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
454. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
455.     xmlns:app="http://schemas.android.com/apk/res-auto"
456.     xmlns:tools="http://schemas.android.com/tools"
457.     android:layout_width="match_parent"
458.     android:layout_height="match_parent"
459.     tools:context=".Welcome">
460.     <TextView
461.         android:id="@+id/mainword"
462.         android:layout_width="fill_parent"
463.         android:layout_height="fill_parent"
464.         android:gravity="center"
465.         android:textSize="22dp"
466.         tools:ignore="MissingConstraints" />
467. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
468. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
469.     xmlns:app="http://schemas.android.com/apk/res-auto"
470.     xmlns:tools="http://schemas.android.com/tools"
471.     android:layout_width="match_parent"
472.     android:layout_height="match_parent"
473.     tools:context=".Welcome">
474.     <TextView
475.         android:id="@+id/mainword"
476.         android:layout_width="fill_parent"
477.         android:layout_height="fill_parent"
478.         android:gravity="center"
479.         android:textSize="22dp"
480.         tools:ignore="MissingConstraints" />
481. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="0dp"
482. <?xml version="1.0" encoding="utf-8"?>
483. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
484.     xmlns:app="http://schemas.android.com/apk/res-auto"
485.     xmlns:tools="http://schemas.android.com/tools"
486.     android:layout_width="match_parent"
487.     android:layout_height="match_parent"
488.     tools:context=".Welcome">
489.     <TextView
490.         android:id="@+id/mainword"
491.         android:layout_width="fill_parent"
492.         android:layout_height="fill_parent"
493.         android:gravity="center"
494.         android:textSize="22dp"
495.         tools:ignore="MissingConstraints" />
496. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
497. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
498.     xmlns:app="http://schemas.android.com/apk/res-auto"
499.     xmlns:tools="http://schemas.android.com/tools"
500.     android:layout_width="match_parent"
501.     android:layout_height="match_parent"
502.     tools:context=".Welcome">
503.     <TextView
504.         android:id="@+id/mainword"
505.         android:layout_width="fill_parent"
506.         android:layout_height="fill_parent"
507.         android:gravity="center"
508.         android:textSize="22dp"
509.         tools:ignore="MissingConstraints" />
510. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
511. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
512.     xmlns:app="http://schemas.android.com/apk/res-auto"
513.     xmlns:tools="http://schemas.android.com/tools"
514.     android:layout_width="match_parent"
515.     android:layout_height="match_parent"
516.     tools:context=".Welcome">
517.     <TextView
518.         android:id="@+id/mainword"
519.         android:layout_width="fill_parent"
520.         android:layout_height="fill_parent"
521.         android:gravity="center"
522.         android:textSize="22dp"
523.         tools:ignore="MissingConstraints" />
524. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
525. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
526.     xmlns:app="http://schemas.android.com/apk/res-auto"
527.     xmlns:tools="http://schemas.android.com/tools"
528.     android:layout_width="match_parent"
529.     android:layout_height="match_parent"
530.     tools:context=".Welcome">
531.     <TextView
532.         android:id="@+id/mainword"
533.         android:layout_width="fill_parent"
534.         android:layout_height="fill_parent"
535.         android:gravity="center"
536.         android:textSize="22dp"
537.         tools:ignore="MissingConstraints" />
538. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
539. <?xml version="1.0" encoding="utf-8"?>
540. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
541.     xmlns:app="http://schemas.android.com/apk/res-auto"
542.     xmlns:tools="http://schemas.android.com/tools"
543.     android:layout_width="match_parent"
544.     android:layout_height="match_parent"
545.     tools:context=".Welcome">
546.     <TextView
547.         android:id="@+id/mainword"
548.         android:layout_width="fill_parent"
549.         android:layout_height="fill_parent"
550.         android:gravity="center"
551.         android:textSize="22dp"
552.         tools:ignore="MissingConstraints" />
553. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
554. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
555.     xmlns:app="http://schemas.android.com/apk/res-auto"
556.     xmlns:tools="http://schemas.android.com/tools"
557.     android:layout_width="match_parent"
558.     android:layout_height="match_parent"
559.     tools:context=".Welcome">
560.     <TextView
561.         android:id="@+id/mainword"
562.         android:layout_width="fill_parent"
563.         android:layout_height="fill_parent"
564.         android:gravity="center"
565.         android:textSize="22dp"
566.         tools:ignore="MissingConstraints" />
567. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
568. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
569.     xmlns:app="http://schemas.android.com/apk/res-auto"
570.     xmlns:tools="http://schemas.android.com/tools"
571.     android:layout_width="match_parent"
572.     android:layout_height="match_parent"
573.     tools:context=".Welcome">
574.     <TextView
575.         android:id="@+id/mainword"
576.         android:layout_width="fill_parent"
577.         android:layout_height="fill_parent"
578.         android:gravity="center"
579.         android:textSize="22dp"
580.         tools:ignore="MissingConstraints" />
581. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
582. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
583.     xmlns:app="http://schemas.android.com/apk/res-auto"
584.     xmlns:tools="http://schemas.android.com/tools"
585.     android:layout_width="match_parent"
586.     android:layout_height="match_parent"
587.     tools:context=".Welcome">
588.     <TextView
589.         android:id="@+id/mainword"
590.         android:layout_width="fill_parent"
591.         android:layout_height="fill_parent"
592.         android:gravity="center"
593.         android:textSize="22dp"
594.         tools:ignore="MissingConstraints" />
595. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_weight="0.3"
596. <?xml version="1.0" encoding="utf-8"?>
597. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
598.     xmlns:app="http://schemas.android.com/apk/res-auto"
599.     xmlns:tools="http://schemas.android.com/tools"
600.     android:layout_width="match_parent"
601.     android:layout_height="match_parent"
602.     tools:context=".Welcome">
603.     <TextView
604.         android:id="@+id/mainword"
605.         android:layout_width="fill_parent"
606.         android:layout_height="fill_parent"
607.         android:gravity="center"
608.         android:textSize="22dp"
609.         tools:ignore="MissingConstraints" />
610. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
611. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
612.     xmlns:app="http://schemas.android.com/apk/res-auto"
613.     xmlns:tools="http://schemas.android.com/tools"
614.     android:layout_width="match_parent"
615.     android:layout_height="match_parent"
616.     tools:context=".Welcome">
617.     <TextView
618.         android:id="@+id/mainword"
619.         android:layout_width="fill_parent"
620.         android:layout_height="fill_parent"
621.         android:gravity="center"
622.         android:textSize="22dp"
623.         tools:ignore="MissingConstraints" />
624. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
625. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
626.     xmlns:app="http://schemas.android.com/apk/res-auto"
627.     xmlns:tools="http://schemas.android.com/tools"
628.     android:layout_width="match_parent"
629.     android:layout_height="match_parent"
630.     tools:context=".Welcome">
631.     <TextView
632.         android:id="@+id/mainword"
633.         android:layout_width="fill_parent"
634.         android:layout_height="fill_parent"
635.         android:gravity="center"
636.         android:textSize="22dp"
637.         tools:ignore="MissingConstraints" />
638. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
639. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
640.     xmlns:app="http://schemas.android.com/apk/res-auto"
641.     xmlns:tools="http://schemas.android.com/tools"
642.     android:layout_width="match_parent"
643.     android:layout_height="match_parent"
644.     tools:context=".Welcome">
645.     <TextView
646.         android:id="@+id/mainword"
647.         android:layout_width="fill_parent"
648.         android:layout_height="fill_parent"
649.         android:gravity="center"
650.         android:textSize="22dp"
651.         tools:ignore="MissingConstraints" />
652. </androidx.constraintlayout.widget.ConstraintLayout>android:gravity="center"
653. <?xml version="1.0" encoding="utf-8"?>
654. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
655.     xmlns:app="http://schemas.android.com/apk/res-auto"
656.     xmlns:tools="http://schemas.android.com/tools"
657.     android:layout_width="match_parent"
658.     android:layout_height="match_parent"
659.     tools:context=".Welcome">
660.     <TextView
661.         android:id="@+id/mainword"
662.         android:layout_width="fill_parent"
663.         android:layout_height="fill_parent"
664.         android:gravity="center"
665.         android:textSize="22dp"
666.         tools:ignore="MissingConstraints" />
667. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
668. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
669.     xmlns:app="http://schemas.android.com/apk/res-auto"
670.     xmlns:tools="http://schemas.android.com/tools"
671.     android:layout_width="match_parent"
672.     android:layout_height="match_parent"
673.     tools:context=".Welcome">
674.     <TextView
675.         android:id="@+id/mainword"
676.         android:layout_width="fill_parent"
677.         android:layout_height="fill_parent"
678.         android:gravity="center"
679.         android:textSize="22dp"
680.         tools:ignore="MissingConstraints" />
681. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
682. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
683.     xmlns:app="http://schemas.android.com/apk/res-auto"
684.     xmlns:tools="http://schemas.android.com/tools"
685.     android:layout_width="match_parent"
686.     android:layout_height="match_parent"
687.     tools:context=".Welcome">
688.     <TextView
689.         android:id="@+id/mainword"
690.         android:layout_width="fill_parent"
691.         android:layout_height="fill_parent"
692.         android:gravity="center"
693.         android:textSize="22dp"
694.         tools:ignore="MissingConstraints" />
695. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
696. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
697.     xmlns:app="http://schemas.android.com/apk/res-auto"
698.     xmlns:tools="http://schemas.android.com/tools"
699.     android:layout_width="match_parent"
700.     android:layout_height="match_parent"
701.     tools:context=".Welcome">
702.     <TextView
703.         android:id="@+id/mainword"
704.         android:layout_width="fill_parent"
705.         android:layout_height="fill_parent"
706.         android:gravity="center"
707.         android:textSize="22dp"
708.         tools:ignore="MissingConstraints" />
709. </androidx.constraintlayout.widget.ConstraintLayout>android:textSize="18dp"
710. <?xml version="1.0" encoding="utf-8"?>
711. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
712.     xmlns:app="http://schemas.android.com/apk/res-auto"
713.     xmlns:tools="http://schemas.android.com/tools"
714.     android:layout_width="match_parent"
715.     android:layout_height="match_parent"
716.     tools:context=".Welcome">
717.     <TextView
718.         android:id="@+id/mainword"
719.         android:layout_width="fill_parent"
720.         android:layout_height="fill_parent"
721.         android:gravity="center"
722.         android:textSize="22dp"
723.         tools:ignore="MissingConstraints" />
724. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
725. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
726.     xmlns:app="http://schemas.android.com/apk/res-auto"
727.     xmlns:tools="http://schemas.android.com/tools"
728.     android:layout_width="match_parent"
729.     android:layout_height="match_parent"
730.     tools:context=".Welcome">
731.     <TextView
732.         android:id="@+id/mainword"
733.         android:layout_width="fill_parent"
734.         android:layout_height="fill_parent"
735.         android:gravity="center"
736.         android:textSize="22dp"
737.         tools:ignore="MissingConstraints" />
738. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
739. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
740.     xmlns:app="http://schemas.android.com/apk/res-auto"
741.     xmlns:tools="http://schemas.android.com/tools"
742.     android:layout_width="match_parent"
743.     android:layout_height="match_parent"
744.     tools:context=".Welcome">
745.     <TextView
746.         android:id="@+id/mainword"
747.         android:layout_width="fill_parent"
748.         android:layout_height="fill_parent"
749.         android:gravity="center"
750.         android:textSize="22dp"
751.         tools:ignore="MissingConstraints" />
752. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
753. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
754.     xmlns:app="http://schemas.android.com/apk/res-auto"
755.     xmlns:tools="http://schemas.android.com/tools"
756.     android:layout_width="match_parent"
757.     android:layout_height="match_parent"
758.     tools:context=".Welcome">
759.     <TextView
760.         android:id="@+id/mainword"
761.         android:layout_width="fill_parent"
762.         android:layout_height="fill_parent"
763.         android:gravity="center"
764.         android:textSize="22dp"
765.         tools:ignore="MissingConstraints" />
766. </androidx.constraintlayout.widget.ConstraintLayout>android:text="用户名:"/>
767. <?xml version="1.0" encoding="utf-8"?>
768. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
769.     xmlns:app="http://schemas.android.com/apk/res-auto"
770.     xmlns:tools="http://schemas.android.com/tools"
771.     android:layout_width="match_parent"
772.     android:layout_height="match_parent"
773.     tools:context=".Welcome">
774.     <TextView
775.         android:id="@+id/mainword"
776.         android:layout_width="fill_parent"
777.         android:layout_height="fill_parent"
778.         android:gravity="center"
779.         android:textSize="22dp"
780.         tools:ignore="MissingConstraints" />
781. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
782. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
783.     xmlns:app="http://schemas.android.com/apk/res-auto"
784.     xmlns:tools="http://schemas.android.com/tools"
785.     android:layout_width="match_parent"
786.     android:layout_height="match_parent"
787.     tools:context=".Welcome">
788.     <TextView
789.         android:id="@+id/mainword"
790.         android:layout_width="fill_parent"
791.         android:layout_height="fill_parent"
792.         android:gravity="center"
793.         android:textSize="22dp"
794.         tools:ignore="MissingConstraints" />
795. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
796. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
797.     xmlns:app="http://schemas.android.com/apk/res-auto"
798.     xmlns:tools="http://schemas.android.com/tools"
799.     android:layout_width="match_parent"
800.     android:layout_height="match_parent"
801.     tools:context=".Welcome">
802.     <TextView
803.         android:id="@+id/mainword"
804.         android:layout_width="fill_parent"
805.         android:layout_height="fill_parent"
806.         android:gravity="center"
807.         android:textSize="22dp"
808.         tools:ignore="MissingConstraints" />
809. </androidx.constraintlayout.widget.ConstraintLayout><EditText
810. <?xml version="1.0" encoding="utf-8"?>
811. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
812.     xmlns:app="http://schemas.android.com/apk/res-auto"
813.     xmlns:tools="http://schemas.android.com/tools"
814.     android:layout_width="match_parent"
815.     android:layout_height="match_parent"
816.     tools:context=".Welcome">
817.     <TextView
818.         android:id="@+id/mainword"
819.         android:layout_width="fill_parent"
820.         android:layout_height="fill_parent"
821.         android:gravity="center"
822.         android:textSize="22dp"
823.         tools:ignore="MissingConstraints" />
824. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
825. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
826.     xmlns:app="http://schemas.android.com/apk/res-auto"
827.     xmlns:tools="http://schemas.android.com/tools"
828.     android:layout_width="match_parent"
829.     android:layout_height="match_parent"
830.     tools:context=".Welcome">
831.     <TextView
832.         android:id="@+id/mainword"
833.         android:layout_width="fill_parent"
834.         android:layout_height="fill_parent"
835.         android:gravity="center"
836.         android:textSize="22dp"
837.         tools:ignore="MissingConstraints" />
838. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
839. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
840.     xmlns:app="http://schemas.android.com/apk/res-auto"
841.     xmlns:tools="http://schemas.android.com/tools"
842.     android:layout_width="match_parent"
843.     android:layout_height="match_parent"
844.     tools:context=".Welcome">
845.     <TextView
846.         android:id="@+id/mainword"
847.         android:layout_width="fill_parent"
848.         android:layout_height="fill_parent"
849.         android:gravity="center"
850.         android:textSize="22dp"
851.         tools:ignore="MissingConstraints" />
852. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
853. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
854.     xmlns:app="http://schemas.android.com/apk/res-auto"
855.     xmlns:tools="http://schemas.android.com/tools"
856.     android:layout_width="match_parent"
857.     android:layout_height="match_parent"
858.     tools:context=".Welcome">
859.     <TextView
860.         android:id="@+id/mainword"
861.         android:layout_width="fill_parent"
862.         android:layout_height="fill_parent"
863.         android:gravity="center"
864.         android:textSize="22dp"
865.         tools:ignore="MissingConstraints" />
866. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/name"
867. <?xml version="1.0" encoding="utf-8"?>
868. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
869.     xmlns:app="http://schemas.android.com/apk/res-auto"
870.     xmlns:tools="http://schemas.android.com/tools"
871.     android:layout_width="match_parent"
872.     android:layout_height="match_parent"
873.     tools:context=".Welcome">
874.     <TextView
875.         android:id="@+id/mainword"
876.         android:layout_width="fill_parent"
877.         android:layout_height="fill_parent"
878.         android:gravity="center"
879.         android:textSize="22dp"
880.         tools:ignore="MissingConstraints" />
881. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
882. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
883.     xmlns:app="http://schemas.android.com/apk/res-auto"
884.     xmlns:tools="http://schemas.android.com/tools"
885.     android:layout_width="match_parent"
886.     android:layout_height="match_parent"
887.     tools:context=".Welcome">
888.     <TextView
889.         android:id="@+id/mainword"
890.         android:layout_width="fill_parent"
891.         android:layout_height="fill_parent"
892.         android:gravity="center"
893.         android:textSize="22dp"
894.         tools:ignore="MissingConstraints" />
895. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
896. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
897.     xmlns:app="http://schemas.android.com/apk/res-auto"
898.     xmlns:tools="http://schemas.android.com/tools"
899.     android:layout_width="match_parent"
900.     android:layout_height="match_parent"
901.     tools:context=".Welcome">
902.     <TextView
903.         android:id="@+id/mainword"
904.         android:layout_width="fill_parent"
905.         android:layout_height="fill_parent"
906.         android:gravity="center"
907.         android:textSize="22dp"
908.         tools:ignore="MissingConstraints" />
909. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
910. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
911.     xmlns:app="http://schemas.android.com/apk/res-auto"
912.     xmlns:tools="http://schemas.android.com/tools"
913.     android:layout_width="match_parent"
914.     android:layout_height="match_parent"
915.     tools:context=".Welcome">
916.     <TextView
917.         android:id="@+id/mainword"
918.         android:layout_width="fill_parent"
919.         android:layout_height="fill_parent"
920.         android:gravity="center"
921.         android:textSize="22dp"
922.         tools:ignore="MissingConstraints" />
923. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="0dp"
924. <?xml version="1.0" encoding="utf-8"?>
925. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
926.     xmlns:app="http://schemas.android.com/apk/res-auto"
927.     xmlns:tools="http://schemas.android.com/tools"
928.     android:layout_width="match_parent"
929.     android:layout_height="match_parent"
930.     tools:context=".Welcome">
931.     <TextView
932.         android:id="@+id/mainword"
933.         android:layout_width="fill_parent"
934.         android:layout_height="fill_parent"
935.         android:gravity="center"
936.         android:textSize="22dp"
937.         tools:ignore="MissingConstraints" />
938. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
939. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
940.     xmlns:app="http://schemas.android.com/apk/res-auto"
941.     xmlns:tools="http://schemas.android.com/tools"
942.     android:layout_width="match_parent"
943.     android:layout_height="match_parent"
944.     tools:context=".Welcome">
945.     <TextView
946.         android:id="@+id/mainword"
947.         android:layout_width="fill_parent"
948.         android:layout_height="fill_parent"
949.         android:gravity="center"
950.         android:textSize="22dp"
951.         tools:ignore="MissingConstraints" />
952. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
953. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
954.     xmlns:app="http://schemas.android.com/apk/res-auto"
955.     xmlns:tools="http://schemas.android.com/tools"
956.     android:layout_width="match_parent"
957.     android:layout_height="match_parent"
958.     tools:context=".Welcome">
959.     <TextView
960.         android:id="@+id/mainword"
961.         android:layout_width="fill_parent"
962.         android:layout_height="fill_parent"
963.         android:gravity="center"
964.         android:textSize="22dp"
965.         tools:ignore="MissingConstraints" />
966. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
967. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
968.     xmlns:app="http://schemas.android.com/apk/res-auto"
969.     xmlns:tools="http://schemas.android.com/tools"
970.     android:layout_width="match_parent"
971.     android:layout_height="match_parent"
972.     tools:context=".Welcome">
973.     <TextView
974.         android:id="@+id/mainword"
975.         android:layout_width="fill_parent"
976.         android:layout_height="fill_parent"
977.         android:gravity="center"
978.         android:textSize="22dp"
979.         tools:ignore="MissingConstraints" />
980. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
981. <?xml version="1.0" encoding="utf-8"?>
982. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
983.     xmlns:app="http://schemas.android.com/apk/res-auto"
984.     xmlns:tools="http://schemas.android.com/tools"
985.     android:layout_width="match_parent"
986.     android:layout_height="match_parent"
987.     tools:context=".Welcome">
988.     <TextView
989.         android:id="@+id/mainword"
990.         android:layout_width="fill_parent"
991.         android:layout_height="fill_parent"
992.         android:gravity="center"
993.         android:textSize="22dp"
994.         tools:ignore="MissingConstraints" />
995. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
996. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
997.     xmlns:app="http://schemas.android.com/apk/res-auto"
998.     xmlns:tools="http://schemas.android.com/tools"
999.     android:layout_width="match_parent"
1000.     android:layout_height="match_parent"
1001.     tools:context=".Welcome">
1002.     <TextView
1003.         android:id="@+id/mainword"
1004.         android:layout_width="fill_parent"
1005.         android:layout_height="fill_parent"
1006.         android:gravity="center"
1007.         android:textSize="22dp"
1008.         tools:ignore="MissingConstraints" />
1009. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1010. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1011.     xmlns:app="http://schemas.android.com/apk/res-auto"
1012.     xmlns:tools="http://schemas.android.com/tools"
1013.     android:layout_width="match_parent"
1014.     android:layout_height="match_parent"
1015.     tools:context=".Welcome">
1016.     <TextView
1017.         android:id="@+id/mainword"
1018.         android:layout_width="fill_parent"
1019.         android:layout_height="fill_parent"
1020.         android:gravity="center"
1021.         android:textSize="22dp"
1022.         tools:ignore="MissingConstraints" />
1023. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1024. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1025.     xmlns:app="http://schemas.android.com/apk/res-auto"
1026.     xmlns:tools="http://schemas.android.com/tools"
1027.     android:layout_width="match_parent"
1028.     android:layout_height="match_parent"
1029.     tools:context=".Welcome">
1030.     <TextView
1031.         android:id="@+id/mainword"
1032.         android:layout_width="fill_parent"
1033.         android:layout_height="fill_parent"
1034.         android:gravity="center"
1035.         android:textSize="22dp"
1036.         tools:ignore="MissingConstraints" />
1037. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_weight="1"
1038. <?xml version="1.0" encoding="utf-8"?>
1039. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1040.     xmlns:app="http://schemas.android.com/apk/res-auto"
1041.     xmlns:tools="http://schemas.android.com/tools"
1042.     android:layout_width="match_parent"
1043.     android:layout_height="match_parent"
1044.     tools:context=".Welcome">
1045.     <TextView
1046.         android:id="@+id/mainword"
1047.         android:layout_width="fill_parent"
1048.         android:layout_height="fill_parent"
1049.         android:gravity="center"
1050.         android:textSize="22dp"
1051.         tools:ignore="MissingConstraints" />
1052. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1053. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1054.     xmlns:app="http://schemas.android.com/apk/res-auto"
1055.     xmlns:tools="http://schemas.android.com/tools"
1056.     android:layout_width="match_parent"
1057.     android:layout_height="match_parent"
1058.     tools:context=".Welcome">
1059.     <TextView
1060.         android:id="@+id/mainword"
1061.         android:layout_width="fill_parent"
1062.         android:layout_height="fill_parent"
1063.         android:gravity="center"
1064.         android:textSize="22dp"
1065.         tools:ignore="MissingConstraints" />
1066. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1067. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1068.     xmlns:app="http://schemas.android.com/apk/res-auto"
1069.     xmlns:tools="http://schemas.android.com/tools"
1070.     android:layout_width="match_parent"
1071.     android:layout_height="match_parent"
1072.     tools:context=".Welcome">
1073.     <TextView
1074.         android:id="@+id/mainword"
1075.         android:layout_width="fill_parent"
1076.         android:layout_height="fill_parent"
1077.         android:gravity="center"
1078.         android:textSize="22dp"
1079.         tools:ignore="MissingConstraints" />
1080. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1081. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1082.     xmlns:app="http://schemas.android.com/apk/res-auto"
1083.     xmlns:tools="http://schemas.android.com/tools"
1084.     android:layout_width="match_parent"
1085.     android:layout_height="match_parent"
1086.     tools:context=".Welcome">
1087.     <TextView
1088.         android:id="@+id/mainword"
1089.         android:layout_width="fill_parent"
1090.         android:layout_height="fill_parent"
1091.         android:gravity="center"
1092.         android:textSize="22dp"
1093.         tools:ignore="MissingConstraints" />
1094. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_marginRight="20dp"/>
1095. <?xml version="1.0" encoding="utf-8"?>
1096. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1097.     xmlns:app="http://schemas.android.com/apk/res-auto"
1098.     xmlns:tools="http://schemas.android.com/tools"
1099.     android:layout_width="match_parent"
1100.     android:layout_height="match_parent"
1101.     tools:context=".Welcome">
1102.     <TextView
1103.         android:id="@+id/mainword"
1104.         android:layout_width="fill_parent"
1105.         android:layout_height="fill_parent"
1106.         android:gravity="center"
1107.         android:textSize="22dp"
1108.         tools:ignore="MissingConstraints" />
1109. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1110. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1111.     xmlns:app="http://schemas.android.com/apk/res-auto"
1112.     xmlns:tools="http://schemas.android.com/tools"
1113.     android:layout_width="match_parent"
1114.     android:layout_height="match_parent"
1115.     tools:context=".Welcome">
1116.     <TextView
1117.         android:id="@+id/mainword"
1118.         android:layout_width="fill_parent"
1119.         android:layout_height="fill_parent"
1120.         android:gravity="center"
1121.         android:textSize="22dp"
1122.         tools:ignore="MissingConstraints" />
1123. </androidx.constraintlayout.widget.ConstraintLayout></LinearLayout>
1125. <?xml version="1.0" encoding="utf-8"?>
1126. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1127.     xmlns:app="http://schemas.android.com/apk/res-auto"
1128.     xmlns:tools="http://schemas.android.com/tools"
1129.     android:layout_width="match_parent"
1130.     android:layout_height="match_parent"
1131.     tools:context=".Welcome">
1132.     <TextView
1133.         android:id="@+id/mainword"
1134.         android:layout_width="fill_parent"
1135.         android:layout_height="fill_parent"
1136.         android:gravity="center"
1137.         android:textSize="22dp"
1138.         tools:ignore="MissingConstraints" />
1139. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1140. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1141.     xmlns:app="http://schemas.android.com/apk/res-auto"
1142.     xmlns:tools="http://schemas.android.com/tools"
1143.     android:layout_width="match_parent"
1144.     android:layout_height="match_parent"
1145.     tools:context=".Welcome">
1146.     <TextView
1147.         android:id="@+id/mainword"
1148.         android:layout_width="fill_parent"
1149.         android:layout_height="fill_parent"
1150.         android:gravity="center"
1151.         android:textSize="22dp"
1152.         tools:ignore="MissingConstraints" />
1153. </androidx.constraintlayout.widget.ConstraintLayout><LinearLayout
1154. <?xml version="1.0" encoding="utf-8"?>
1155. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1156.     xmlns:app="http://schemas.android.com/apk/res-auto"
1157.     xmlns:tools="http://schemas.android.com/tools"
1158.     android:layout_width="match_parent"
1159.     android:layout_height="match_parent"
1160.     tools:context=".Welcome">
1161.     <TextView
1162.         android:id="@+id/mainword"
1163.         android:layout_width="fill_parent"
1164.         android:layout_height="fill_parent"
1165.         android:gravity="center"
1166.         android:textSize="22dp"
1167.         tools:ignore="MissingConstraints" />
1168. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1169. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1170.     xmlns:app="http://schemas.android.com/apk/res-auto"
1171.     xmlns:tools="http://schemas.android.com/tools"
1172.     android:layout_width="match_parent"
1173.     android:layout_height="match_parent"
1174.     tools:context=".Welcome">
1175.     <TextView
1176.         android:id="@+id/mainword"
1177.         android:layout_width="fill_parent"
1178.         android:layout_height="fill_parent"
1179.         android:gravity="center"
1180.         android:textSize="22dp"
1181.         tools:ignore="MissingConstraints" />
1182. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1183. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1184.     xmlns:app="http://schemas.android.com/apk/res-auto"
1185.     xmlns:tools="http://schemas.android.com/tools"
1186.     android:layout_width="match_parent"
1187.     android:layout_height="match_parent"
1188.     tools:context=".Welcome">
1189.     <TextView
1190.         android:id="@+id/mainword"
1191.         android:layout_width="fill_parent"
1192.         android:layout_height="fill_parent"
1193.         android:gravity="center"
1194.         android:textSize="22dp"
1195.         tools:ignore="MissingConstraints" />
1196. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="match_parent"
1197. <?xml version="1.0" encoding="utf-8"?>
1198. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1199.     xmlns:app="http://schemas.android.com/apk/res-auto"
1200.     xmlns:tools="http://schemas.android.com/tools"
1201.     android:layout_width="match_parent"
1202.     android:layout_height="match_parent"
1203.     tools:context=".Welcome">
1204.     <TextView
1205.         android:id="@+id/mainword"
1206.         android:layout_width="fill_parent"
1207.         android:layout_height="fill_parent"
1208.         android:gravity="center"
1209.         android:textSize="22dp"
1210.         tools:ignore="MissingConstraints" />
1211. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1212. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1213.     xmlns:app="http://schemas.android.com/apk/res-auto"
1214.     xmlns:tools="http://schemas.android.com/tools"
1215.     android:layout_width="match_parent"
1216.     android:layout_height="match_parent"
1217.     tools:context=".Welcome">
1218.     <TextView
1219.         android:id="@+id/mainword"
1220.         android:layout_width="fill_parent"
1221.         android:layout_height="fill_parent"
1222.         android:gravity="center"
1223.         android:textSize="22dp"
1224.         tools:ignore="MissingConstraints" />
1225. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1226. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1227.     xmlns:app="http://schemas.android.com/apk/res-auto"
1228.     xmlns:tools="http://schemas.android.com/tools"
1229.     android:layout_width="match_parent"
1230.     android:layout_height="match_parent"
1231.     tools:context=".Welcome">
1232.     <TextView
1233.         android:id="@+id/mainword"
1234.         android:layout_width="fill_parent"
1235.         android:layout_height="fill_parent"
1236.         android:gravity="center"
1237.         android:textSize="22dp"
1238.         tools:ignore="MissingConstraints" />
1239. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
1240. <?xml version="1.0" encoding="utf-8"?>
1241. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1242.     xmlns:app="http://schemas.android.com/apk/res-auto"
1243.     xmlns:tools="http://schemas.android.com/tools"
1244.     android:layout_width="match_parent"
1245.     android:layout_height="match_parent"
1246.     tools:context=".Welcome">
1247.     <TextView
1248.         android:id="@+id/mainword"
1249.         android:layout_width="fill_parent"
1250.         android:layout_height="fill_parent"
1251.         android:gravity="center"
1252.         android:textSize="22dp"
1253.         tools:ignore="MissingConstraints" />
1254. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1255. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1256.     xmlns:app="http://schemas.android.com/apk/res-auto"
1257.     xmlns:tools="http://schemas.android.com/tools"
1258.     android:layout_width="match_parent"
1259.     android:layout_height="match_parent"
1260.     tools:context=".Welcome">
1261.     <TextView
1262.         android:id="@+id/mainword"
1263.         android:layout_width="fill_parent"
1264.         android:layout_height="fill_parent"
1265.         android:gravity="center"
1266.         android:textSize="22dp"
1267.         tools:ignore="MissingConstraints" />
1268. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1269. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1270.     xmlns:app="http://schemas.android.com/apk/res-auto"
1271.     xmlns:tools="http://schemas.android.com/tools"
1272.     android:layout_width="match_parent"
1273.     android:layout_height="match_parent"
1274.     tools:context=".Welcome">
1275.     <TextView
1276.         android:id="@+id/mainword"
1277.         android:layout_width="fill_parent"
1278.         android:layout_height="fill_parent"
1279.         android:gravity="center"
1280.         android:textSize="22dp"
1281.         tools:ignore="MissingConstraints" />
1282. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_marginTop="10dp"
1283. <?xml version="1.0" encoding="utf-8"?>
1284. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1285.     xmlns:app="http://schemas.android.com/apk/res-auto"
1286.     xmlns:tools="http://schemas.android.com/tools"
1287.     android:layout_width="match_parent"
1288.     android:layout_height="match_parent"
1289.     tools:context=".Welcome">
1290.     <TextView
1291.         android:id="@+id/mainword"
1292.         android:layout_width="fill_parent"
1293.         android:layout_height="fill_parent"
1294.         android:gravity="center"
1295.         android:textSize="22dp"
1296.         tools:ignore="MissingConstraints" />
1297. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1298. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1299.     xmlns:app="http://schemas.android.com/apk/res-auto"
1300.     xmlns:tools="http://schemas.android.com/tools"
1301.     android:layout_width="match_parent"
1302.     android:layout_height="match_parent"
1303.     tools:context=".Welcome">
1304.     <TextView
1305.         android:id="@+id/mainword"
1306.         android:layout_width="fill_parent"
1307.         android:layout_height="fill_parent"
1308.         android:gravity="center"
1309.         android:textSize="22dp"
1310.         tools:ignore="MissingConstraints" />
1311. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1312. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1313.     xmlns:app="http://schemas.android.com/apk/res-auto"
1314.     xmlns:tools="http://schemas.android.com/tools"
1315.     android:layout_width="match_parent"
1316.     android:layout_height="match_parent"
1317.     tools:context=".Welcome">
1318.     <TextView
1319.         android:id="@+id/mainword"
1320.         android:layout_width="fill_parent"
1321.         android:layout_height="fill_parent"
1322.         android:gravity="center"
1323.         android:textSize="22dp"
1324.         tools:ignore="MissingConstraints" />
1325. </androidx.constraintlayout.widget.ConstraintLayout>android:orientation="horizontal">
1326. <?xml version="1.0" encoding="utf-8"?>
1327. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1328.     xmlns:app="http://schemas.android.com/apk/res-auto"
1329.     xmlns:tools="http://schemas.android.com/tools"
1330.     android:layout_width="match_parent"
1331.     android:layout_height="match_parent"
1332.     tools:context=".Welcome">
1333.     <TextView
1334.         android:id="@+id/mainword"
1335.         android:layout_width="fill_parent"
1336.         android:layout_height="fill_parent"
1337.         android:gravity="center"
1338.         android:textSize="22dp"
1339.         tools:ignore="MissingConstraints" />
1340. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1341. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1342.     xmlns:app="http://schemas.android.com/apk/res-auto"
1343.     xmlns:tools="http://schemas.android.com/tools"
1344.     android:layout_width="match_parent"
1345.     android:layout_height="match_parent"
1346.     tools:context=".Welcome">
1347.     <TextView
1348.         android:id="@+id/mainword"
1349.         android:layout_width="fill_parent"
1350.         android:layout_height="fill_parent"
1351.         android:gravity="center"
1352.         android:textSize="22dp"
1353.         tools:ignore="MissingConstraints" />
1354. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1355. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1356.     xmlns:app="http://schemas.android.com/apk/res-auto"
1357.     xmlns:tools="http://schemas.android.com/tools"
1358.     android:layout_width="match_parent"
1359.     android:layout_height="match_parent"
1360.     tools:context=".Welcome">
1361.     <TextView
1362.         android:id="@+id/mainword"
1363.         android:layout_width="fill_parent"
1364.         android:layout_height="fill_parent"
1365.         android:gravity="center"
1366.         android:textSize="22dp"
1367.         tools:ignore="MissingConstraints" />
1368. </androidx.constraintlayout.widget.ConstraintLayout><TextView
1369. <?xml version="1.0" encoding="utf-8"?>
1370. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1371.     xmlns:app="http://schemas.android.com/apk/res-auto"
1372.     xmlns:tools="http://schemas.android.com/tools"
1373.     android:layout_width="match_parent"
1374.     android:layout_height="match_parent"
1375.     tools:context=".Welcome">
1376.     <TextView
1377.         android:id="@+id/mainword"
1378.         android:layout_width="fill_parent"
1379.         android:layout_height="fill_parent"
1380.         android:gravity="center"
1381.         android:textSize="22dp"
1382.         tools:ignore="MissingConstraints" />
1383. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1384. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1385.     xmlns:app="http://schemas.android.com/apk/res-auto"
1386.     xmlns:tools="http://schemas.android.com/tools"
1387.     android:layout_width="match_parent"
1388.     android:layout_height="match_parent"
1389.     tools:context=".Welcome">
1390.     <TextView
1391.         android:id="@+id/mainword"
1392.         android:layout_width="fill_parent"
1393.         android:layout_height="fill_parent"
1394.         android:gravity="center"
1395.         android:textSize="22dp"
1396.         tools:ignore="MissingConstraints" />
1397. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1398. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1399.     xmlns:app="http://schemas.android.com/apk/res-auto"
1400.     xmlns:tools="http://schemas.android.com/tools"
1401.     android:layout_width="match_parent"
1402.     android:layout_height="match_parent"
1403.     tools:context=".Welcome">
1404.     <TextView
1405.         android:id="@+id/mainword"
1406.         android:layout_width="fill_parent"
1407.         android:layout_height="fill_parent"
1408.         android:gravity="center"
1409.         android:textSize="22dp"
1410.         tools:ignore="MissingConstraints" />
1411. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1412. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1413.     xmlns:app="http://schemas.android.com/apk/res-auto"
1414.     xmlns:tools="http://schemas.android.com/tools"
1415.     android:layout_width="match_parent"
1416.     android:layout_height="match_parent"
1417.     tools:context=".Welcome">
1418.     <TextView
1419.         android:id="@+id/mainword"
1420.         android:layout_width="fill_parent"
1421.         android:layout_height="fill_parent"
1422.         android:gravity="center"
1423.         android:textSize="22dp"
1424.         tools:ignore="MissingConstraints" />
1425. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="0dp"
1426. <?xml version="1.0" encoding="utf-8"?>
1427. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1428.     xmlns:app="http://schemas.android.com/apk/res-auto"
1429.     xmlns:tools="http://schemas.android.com/tools"
1430.     android:layout_width="match_parent"
1431.     android:layout_height="match_parent"
1432.     tools:context=".Welcome">
1433.     <TextView
1434.         android:id="@+id/mainword"
1435.         android:layout_width="fill_parent"
1436.         android:layout_height="fill_parent"
1437.         android:gravity="center"
1438.         android:textSize="22dp"
1439.         tools:ignore="MissingConstraints" />
1440. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1441. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1442.     xmlns:app="http://schemas.android.com/apk/res-auto"
1443.     xmlns:tools="http://schemas.android.com/tools"
1444.     android:layout_width="match_parent"
1445.     android:layout_height="match_parent"
1446.     tools:context=".Welcome">
1447.     <TextView
1448.         android:id="@+id/mainword"
1449.         android:layout_width="fill_parent"
1450.         android:layout_height="fill_parent"
1451.         android:gravity="center"
1452.         android:textSize="22dp"
1453.         tools:ignore="MissingConstraints" />
1454. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1455. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1456.     xmlns:app="http://schemas.android.com/apk/res-auto"
1457.     xmlns:tools="http://schemas.android.com/tools"
1458.     android:layout_width="match_parent"
1459.     android:layout_height="match_parent"
1460.     tools:context=".Welcome">
1461.     <TextView
1462.         android:id="@+id/mainword"
1463.         android:layout_width="fill_parent"
1464.         android:layout_height="fill_parent"
1465.         android:gravity="center"
1466.         android:textSize="22dp"
1467.         tools:ignore="MissingConstraints" />
1468. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1469. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1470.     xmlns:app="http://schemas.android.com/apk/res-auto"
1471.     xmlns:tools="http://schemas.android.com/tools"
1472.     android:layout_width="match_parent"
1473.     android:layout_height="match_parent"
1474.     tools:context=".Welcome">
1475.     <TextView
1476.         android:id="@+id/mainword"
1477.         android:layout_width="fill_parent"
1478.         android:layout_height="fill_parent"
1479.         android:gravity="center"
1480.         android:textSize="22dp"
1481.         tools:ignore="MissingConstraints" />
1482. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
1483. <?xml version="1.0" encoding="utf-8"?>
1484. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1485.     xmlns:app="http://schemas.android.com/apk/res-auto"
1486.     xmlns:tools="http://schemas.android.com/tools"
1487.     android:layout_width="match_parent"
1488.     android:layout_height="match_parent"
1489.     tools:context=".Welcome">
1490.     <TextView
1491.         android:id="@+id/mainword"
1492.         android:layout_width="fill_parent"
1493.         android:layout_height="fill_parent"
1494.         android:gravity="center"
1495.         android:textSize="22dp"
1496.         tools:ignore="MissingConstraints" />
1497. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1498. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1499.     xmlns:app="http://schemas.android.com/apk/res-auto"
1500.     xmlns:tools="http://schemas.android.com/tools"
1501.     android:layout_width="match_parent"
1502.     android:layout_height="match_parent"
1503.     tools:context=".Welcome">
1504.     <TextView
1505.         android:id="@+id/mainword"
1506.         android:layout_width="fill_parent"
1507.         android:layout_height="fill_parent"
1508.         android:gravity="center"
1509.         android:textSize="22dp"
1510.         tools:ignore="MissingConstraints" />
1511. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1512. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1513.     xmlns:app="http://schemas.android.com/apk/res-auto"
1514.     xmlns:tools="http://schemas.android.com/tools"
1515.     android:layout_width="match_parent"
1516.     android:layout_height="match_parent"
1517.     tools:context=".Welcome">
1518.     <TextView
1519.         android:id="@+id/mainword"
1520.         android:layout_width="fill_parent"
1521.         android:layout_height="fill_parent"
1522.         android:gravity="center"
1523.         android:textSize="22dp"
1524.         tools:ignore="MissingConstraints" />
1525. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1526. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1527.     xmlns:app="http://schemas.android.com/apk/res-auto"
1528.     xmlns:tools="http://schemas.android.com/tools"
1529.     android:layout_width="match_parent"
1530.     android:layout_height="match_parent"
1531.     tools:context=".Welcome">
1532.     <TextView
1533.         android:id="@+id/mainword"
1534.         android:layout_width="fill_parent"
1535.         android:layout_height="fill_parent"
1536.         android:gravity="center"
1537.         android:textSize="22dp"
1538.         tools:ignore="MissingConstraints" />
1539. </androidx.constraintlayout.widget.ConstraintLayout>android:gravity="center"
1540. <?xml version="1.0" encoding="utf-8"?>
1541. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1542.     xmlns:app="http://schemas.android.com/apk/res-auto"
1543.     xmlns:tools="http://schemas.android.com/tools"
1544.     android:layout_width="match_parent"
1545.     android:layout_height="match_parent"
1546.     tools:context=".Welcome">
1547.     <TextView
1548.         android:id="@+id/mainword"
1549.         android:layout_width="fill_parent"
1550.         android:layout_height="fill_parent"
1551.         android:gravity="center"
1552.         android:textSize="22dp"
1553.         tools:ignore="MissingConstraints" />
1554. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1555. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1556.     xmlns:app="http://schemas.android.com/apk/res-auto"
1557.     xmlns:tools="http://schemas.android.com/tools"
1558.     android:layout_width="match_parent"
1559.     android:layout_height="match_parent"
1560.     tools:context=".Welcome">
1561.     <TextView
1562.         android:id="@+id/mainword"
1563.         android:layout_width="fill_parent"
1564.         android:layout_height="fill_parent"
1565.         android:gravity="center"
1566.         android:textSize="22dp"
1567.         tools:ignore="MissingConstraints" />
1568. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1569. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1570.     xmlns:app="http://schemas.android.com/apk/res-auto"
1571.     xmlns:tools="http://schemas.android.com/tools"
1572.     android:layout_width="match_parent"
1573.     android:layout_height="match_parent"
1574.     tools:context=".Welcome">
1575.     <TextView
1576.         android:id="@+id/mainword"
1577.         android:layout_width="fill_parent"
1578.         android:layout_height="fill_parent"
1579.         android:gravity="center"
1580.         android:textSize="22dp"
1581.         tools:ignore="MissingConstraints" />
1582. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1583. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1584.     xmlns:app="http://schemas.android.com/apk/res-auto"
1585.     xmlns:tools="http://schemas.android.com/tools"
1586.     android:layout_width="match_parent"
1587.     android:layout_height="match_parent"
1588.     tools:context=".Welcome">
1589.     <TextView
1590.         android:id="@+id/mainword"
1591.         android:layout_width="fill_parent"
1592.         android:layout_height="fill_parent"
1593.         android:gravity="center"
1594.         android:textSize="22dp"
1595.         tools:ignore="MissingConstraints" />
1596. </androidx.constraintlayout.widget.ConstraintLayout>android:textSize="18dp"
1597. <?xml version="1.0" encoding="utf-8"?>
1598. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1599.     xmlns:app="http://schemas.android.com/apk/res-auto"
1600.     xmlns:tools="http://schemas.android.com/tools"
1601.     android:layout_width="match_parent"
1602.     android:layout_height="match_parent"
1603.     tools:context=".Welcome">
1604.     <TextView
1605.         android:id="@+id/mainword"
1606.         android:layout_width="fill_parent"
1607.         android:layout_height="fill_parent"
1608.         android:gravity="center"
1609.         android:textSize="22dp"
1610.         tools:ignore="MissingConstraints" />
1611. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1612. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1613.     xmlns:app="http://schemas.android.com/apk/res-auto"
1614.     xmlns:tools="http://schemas.android.com/tools"
1615.     android:layout_width="match_parent"
1616.     android:layout_height="match_parent"
1617.     tools:context=".Welcome">
1618.     <TextView
1619.         android:id="@+id/mainword"
1620.         android:layout_width="fill_parent"
1621.         android:layout_height="fill_parent"
1622.         android:gravity="center"
1623.         android:textSize="22dp"
1624.         tools:ignore="MissingConstraints" />
1625. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1626. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1627.     xmlns:app="http://schemas.android.com/apk/res-auto"
1628.     xmlns:tools="http://schemas.android.com/tools"
1629.     android:layout_width="match_parent"
1630.     android:layout_height="match_parent"
1631.     tools:context=".Welcome">
1632.     <TextView
1633.         android:id="@+id/mainword"
1634.         android:layout_width="fill_parent"
1635.         android:layout_height="fill_parent"
1636.         android:gravity="center"
1637.         android:textSize="22dp"
1638.         tools:ignore="MissingConstraints" />
1639. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1640. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1641.     xmlns:app="http://schemas.android.com/apk/res-auto"
1642.     xmlns:tools="http://schemas.android.com/tools"
1643.     android:layout_width="match_parent"
1644.     android:layout_height="match_parent"
1645.     tools:context=".Welcome">
1646.     <TextView
1647.         android:id="@+id/mainword"
1648.         android:layout_width="fill_parent"
1649.         android:layout_height="fill_parent"
1650.         android:gravity="center"
1651.         android:textSize="22dp"
1652.         tools:ignore="MissingConstraints" />
1653. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_weight="0.3"
1654. <?xml version="1.0" encoding="utf-8"?>
1655. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1656.     xmlns:app="http://schemas.android.com/apk/res-auto"
1657.     xmlns:tools="http://schemas.android.com/tools"
1658.     android:layout_width="match_parent"
1659.     android:layout_height="match_parent"
1660.     tools:context=".Welcome">
1661.     <TextView
1662.         android:id="@+id/mainword"
1663.         android:layout_width="fill_parent"
1664.         android:layout_height="fill_parent"
1665.         android:gravity="center"
1666.         android:textSize="22dp"
1667.         tools:ignore="MissingConstraints" />
1668. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1669. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1670.     xmlns:app="http://schemas.android.com/apk/res-auto"
1671.     xmlns:tools="http://schemas.android.com/tools"
1672.     android:layout_width="match_parent"
1673.     android:layout_height="match_parent"
1674.     tools:context=".Welcome">
1675.     <TextView
1676.         android:id="@+id/mainword"
1677.         android:layout_width="fill_parent"
1678.         android:layout_height="fill_parent"
1679.         android:gravity="center"
1680.         android:textSize="22dp"
1681.         tools:ignore="MissingConstraints" />
1682. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1683. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1684.     xmlns:app="http://schemas.android.com/apk/res-auto"
1685.     xmlns:tools="http://schemas.android.com/tools"
1686.     android:layout_width="match_parent"
1687.     android:layout_height="match_parent"
1688.     tools:context=".Welcome">
1689.     <TextView
1690.         android:id="@+id/mainword"
1691.         android:layout_width="fill_parent"
1692.         android:layout_height="fill_parent"
1693.         android:gravity="center"
1694.         android:textSize="22dp"
1695.         tools:ignore="MissingConstraints" />
1696. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1697. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1698.     xmlns:app="http://schemas.android.com/apk/res-auto"
1699.     xmlns:tools="http://schemas.android.com/tools"
1700.     android:layout_width="match_parent"
1701.     android:layout_height="match_parent"
1702.     tools:context=".Welcome">
1703.     <TextView
1704.         android:id="@+id/mainword"
1705.         android:layout_width="fill_parent"
1706.         android:layout_height="fill_parent"
1707.         android:gravity="center"
1708.         android:textSize="22dp"
1709.         tools:ignore="MissingConstraints" />
1710. </androidx.constraintlayout.widget.ConstraintLayout>android:text="密<?xml version="1.0" encoding="utf-8"?>
1711. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1712.     xmlns:app="http://schemas.android.com/apk/res-auto"
1713.     xmlns:tools="http://schemas.android.com/tools"
1714.     android:layout_width="match_parent"
1715.     android:layout_height="match_parent"
1716.     tools:context=".Welcome">
1717.     <TextView
1718.         android:id="@+id/mainword"
1719.         android:layout_width="fill_parent"
1720.         android:layout_height="fill_parent"
1721.         android:gravity="center"
1722.         android:textSize="22dp"
1723.         tools:ignore="MissingConstraints" />
1724. </androidx.constraintlayout.widget.ConstraintLayout>码:"/>
1725. <?xml version="1.0" encoding="utf-8"?>
1726. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1727.     xmlns:app="http://schemas.android.com/apk/res-auto"
1728.     xmlns:tools="http://schemas.android.com/tools"
1729.     android:layout_width="match_parent"
1730.     android:layout_height="match_parent"
1731.     tools:context=".Welcome">
1732.     <TextView
1733.         android:id="@+id/mainword"
1734.         android:layout_width="fill_parent"
1735.         android:layout_height="fill_parent"
1736.         android:gravity="center"
1737.         android:textSize="22dp"
1738.         tools:ignore="MissingConstraints" />
1739. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1740. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1741.     xmlns:app="http://schemas.android.com/apk/res-auto"
1742.     xmlns:tools="http://schemas.android.com/tools"
1743.     android:layout_width="match_parent"
1744.     android:layout_height="match_parent"
1745.     tools:context=".Welcome">
1746.     <TextView
1747.         android:id="@+id/mainword"
1748.         android:layout_width="fill_parent"
1749.         android:layout_height="fill_parent"
1750.         android:gravity="center"
1751.         android:textSize="22dp"
1752.         tools:ignore="MissingConstraints" />
1753. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1754. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1755.     xmlns:app="http://schemas.android.com/apk/res-auto"
1756.     xmlns:tools="http://schemas.android.com/tools"
1757.     android:layout_width="match_parent"
1758.     android:layout_height="match_parent"
1759.     tools:context=".Welcome">
1760.     <TextView
1761.         android:id="@+id/mainword"
1762.         android:layout_width="fill_parent"
1763.         android:layout_height="fill_parent"
1764.         android:gravity="center"
1765.         android:textSize="22dp"
1766.         tools:ignore="MissingConstraints" />
1767. </androidx.constraintlayout.widget.ConstraintLayout><EditText
1768. <?xml version="1.0" encoding="utf-8"?>
1769. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1770.     xmlns:app="http://schemas.android.com/apk/res-auto"
1771.     xmlns:tools="http://schemas.android.com/tools"
1772.     android:layout_width="match_parent"
1773.     android:layout_height="match_parent"
1774.     tools:context=".Welcome">
1775.     <TextView
1776.         android:id="@+id/mainword"
1777.         android:layout_width="fill_parent"
1778.         android:layout_height="fill_parent"
1779.         android:gravity="center"
1780.         android:textSize="22dp"
1781.         tools:ignore="MissingConstraints" />
1782. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1783. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1784.     xmlns:app="http://schemas.android.com/apk/res-auto"
1785.     xmlns:tools="http://schemas.android.com/tools"
1786.     android:layout_width="match_parent"
1787.     android:layout_height="match_parent"
1788.     tools:context=".Welcome">
1789.     <TextView
1790.         android:id="@+id/mainword"
1791.         android:layout_width="fill_parent"
1792.         android:layout_height="fill_parent"
1793.         android:gravity="center"
1794.         android:textSize="22dp"
1795.         tools:ignore="MissingConstraints" />
1796. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1797. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1798.     xmlns:app="http://schemas.android.com/apk/res-auto"
1799.     xmlns:tools="http://schemas.android.com/tools"
1800.     android:layout_width="match_parent"
1801.     android:layout_height="match_parent"
1802.     tools:context=".Welcome">
1803.     <TextView
1804.         android:id="@+id/mainword"
1805.         android:layout_width="fill_parent"
1806.         android:layout_height="fill_parent"
1807.         android:gravity="center"
1808.         android:textSize="22dp"
1809.         tools:ignore="MissingConstraints" />
1810. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1811. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1812.     xmlns:app="http://schemas.android.com/apk/res-auto"
1813.     xmlns:tools="http://schemas.android.com/tools"
1814.     android:layout_width="match_parent"
1815.     android:layout_height="match_parent"
1816.     tools:context=".Welcome">
1817.     <TextView
1818.         android:id="@+id/mainword"
1819.         android:layout_width="fill_parent"
1820.         android:layout_height="fill_parent"
1821.         android:gravity="center"
1822.         android:textSize="22dp"
1823.         tools:ignore="MissingConstraints" />
1824. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/pwd"
1825. <?xml version="1.0" encoding="utf-8"?>
1826. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1827.     xmlns:app="http://schemas.android.com/apk/res-auto"
1828.     xmlns:tools="http://schemas.android.com/tools"
1829.     android:layout_width="match_parent"
1830.     android:layout_height="match_parent"
1831.     tools:context=".Welcome">
1832.     <TextView
1833.         android:id="@+id/mainword"
1834.         android:layout_width="fill_parent"
1835.         android:layout_height="fill_parent"
1836.         android:gravity="center"
1837.         android:textSize="22dp"
1838.         tools:ignore="MissingConstraints" />
1839. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1840. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1841.     xmlns:app="http://schemas.android.com/apk/res-auto"
1842.     xmlns:tools="http://schemas.android.com/tools"
1843.     android:layout_width="match_parent"
1844.     android:layout_height="match_parent"
1845.     tools:context=".Welcome">
1846.     <TextView
1847.         android:id="@+id/mainword"
1848.         android:layout_width="fill_parent"
1849.         android:layout_height="fill_parent"
1850.         android:gravity="center"
1851.         android:textSize="22dp"
1852.         tools:ignore="MissingConstraints" />
1853. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1854. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1855.     xmlns:app="http://schemas.android.com/apk/res-auto"
1856.     xmlns:tools="http://schemas.android.com/tools"
1857.     android:layout_width="match_parent"
1858.     android:layout_height="match_parent"
1859.     tools:context=".Welcome">
1860.     <TextView
1861.         android:id="@+id/mainword"
1862.         android:layout_width="fill_parent"
1863.         android:layout_height="fill_parent"
1864.         android:gravity="center"
1865.         android:textSize="22dp"
1866.         tools:ignore="MissingConstraints" />
1867. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1868. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1869.     xmlns:app="http://schemas.android.com/apk/res-auto"
1870.     xmlns:tools="http://schemas.android.com/tools"
1871.     android:layout_width="match_parent"
1872.     android:layout_height="match_parent"
1873.     tools:context=".Welcome">
1874.     <TextView
1875.         android:id="@+id/mainword"
1876.         android:layout_width="fill_parent"
1877.         android:layout_height="fill_parent"
1878.         android:gravity="center"
1879.         android:textSize="22dp"
1880.         tools:ignore="MissingConstraints" />
1881. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="0dp"
1882. <?xml version="1.0" encoding="utf-8"?>
1883. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1884.     xmlns:app="http://schemas.android.com/apk/res-auto"
1885.     xmlns:tools="http://schemas.android.com/tools"
1886.     android:layout_width="match_parent"
1887.     android:layout_height="match_parent"
1888.     tools:context=".Welcome">
1889.     <TextView
1890.         android:id="@+id/mainword"
1891.         android:layout_width="fill_parent"
1892.         android:layout_height="fill_parent"
1893.         android:gravity="center"
1894.         android:textSize="22dp"
1895.         tools:ignore="MissingConstraints" />
1896. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1897. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1898.     xmlns:app="http://schemas.android.com/apk/res-auto"
1899.     xmlns:tools="http://schemas.android.com/tools"
1900.     android:layout_width="match_parent"
1901.     android:layout_height="match_parent"
1902.     tools:context=".Welcome">
1903.     <TextView
1904.         android:id="@+id/mainword"
1905.         android:layout_width="fill_parent"
1906.         android:layout_height="fill_parent"
1907.         android:gravity="center"
1908.         android:textSize="22dp"
1909.         tools:ignore="MissingConstraints" />
1910. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1911. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1912.     xmlns:app="http://schemas.android.com/apk/res-auto"
1913.     xmlns:tools="http://schemas.android.com/tools"
1914.     android:layout_width="match_parent"
1915.     android:layout_height="match_parent"
1916.     tools:context=".Welcome">
1917.     <TextView
1918.         android:id="@+id/mainword"
1919.         android:layout_width="fill_parent"
1920.         android:layout_height="fill_parent"
1921.         android:gravity="center"
1922.         android:textSize="22dp"
1923.         tools:ignore="MissingConstraints" />
1924. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1925. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1926.     xmlns:app="http://schemas.android.com/apk/res-auto"
1927.     xmlns:tools="http://schemas.android.com/tools"
1928.     android:layout_width="match_parent"
1929.     android:layout_height="match_parent"
1930.     tools:context=".Welcome">
1931.     <TextView
1932.         android:id="@+id/mainword"
1933.         android:layout_width="fill_parent"
1934.         android:layout_height="fill_parent"
1935.         android:gravity="center"
1936.         android:textSize="22dp"
1937.         tools:ignore="MissingConstraints" />
1938. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
1939. <?xml version="1.0" encoding="utf-8"?>
1940. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1941.     xmlns:app="http://schemas.android.com/apk/res-auto"
1942.     xmlns:tools="http://schemas.android.com/tools"
1943.     android:layout_width="match_parent"
1944.     android:layout_height="match_parent"
1945.     tools:context=".Welcome">
1946.     <TextView
1947.         android:id="@+id/mainword"
1948.         android:layout_width="fill_parent"
1949.         android:layout_height="fill_parent"
1950.         android:gravity="center"
1951.         android:textSize="22dp"
1952.         tools:ignore="MissingConstraints" />
1953. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1954. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1955.     xmlns:app="http://schemas.android.com/apk/res-auto"
1956.     xmlns:tools="http://schemas.android.com/tools"
1957.     android:layout_width="match_parent"
1958.     android:layout_height="match_parent"
1959.     tools:context=".Welcome">
1960.     <TextView
1961.         android:id="@+id/mainword"
1962.         android:layout_width="fill_parent"
1963.         android:layout_height="fill_parent"
1964.         android:gravity="center"
1965.         android:textSize="22dp"
1966.         tools:ignore="MissingConstraints" />
1967. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1968. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1969.     xmlns:app="http://schemas.android.com/apk/res-auto"
1970.     xmlns:tools="http://schemas.android.com/tools"
1971.     android:layout_width="match_parent"
1972.     android:layout_height="match_parent"
1973.     tools:context=".Welcome">
1974.     <TextView
1975.         android:id="@+id/mainword"
1976.         android:layout_width="fill_parent"
1977.         android:layout_height="fill_parent"
1978.         android:gravity="center"
1979.         android:textSize="22dp"
1980.         tools:ignore="MissingConstraints" />
1981. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1982. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1983.     xmlns:app="http://schemas.android.com/apk/res-auto"
1984.     xmlns:tools="http://schemas.android.com/tools"
1985.     android:layout_width="match_parent"
1986.     android:layout_height="match_parent"
1987.     tools:context=".Welcome">
1988.     <TextView
1989.         android:id="@+id/mainword"
1990.         android:layout_width="fill_parent"
1991.         android:layout_height="fill_parent"
1992.         android:gravity="center"
1993.         android:textSize="22dp"
1994.         tools:ignore="MissingConstraints" />
1995. </androidx.constraintlayout.widget.ConstraintLayout>android:inputType="textPassword"
1996. <?xml version="1.0" encoding="utf-8"?>
1997. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1998.     xmlns:app="http://schemas.android.com/apk/res-auto"
1999.     xmlns:tools="http://schemas.android.com/tools"
2000.     android:layout_width="match_parent"
2001.     android:layout_height="match_parent"
2002.     tools:context=".Welcome">
2003.     <TextView
2004.         android:id="@+id/mainword"
2005.         android:layout_width="fill_parent"
2006.         android:layout_height="fill_parent"
2007.         android:gravity="center"
2008.         android:textSize="22dp"
2009.         tools:ignore="MissingConstraints" />
2010. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2011. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2012.     xmlns:app="http://schemas.android.com/apk/res-auto"
2013.     xmlns:tools="http://schemas.android.com/tools"
2014.     android:layout_width="match_parent"
2015.     android:layout_height="match_parent"
2016.     tools:context=".Welcome">
2017.     <TextView
2018.         android:id="@+id/mainword"
2019.         android:layout_width="fill_parent"
2020.         android:layout_height="fill_parent"
2021.         android:gravity="center"
2022.         android:textSize="22dp"
2023.         tools:ignore="MissingConstraints" />
2024. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2025. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2026.     xmlns:app="http://schemas.android.com/apk/res-auto"
2027.     xmlns:tools="http://schemas.android.com/tools"
2028.     android:layout_width="match_parent"
2029.     android:layout_height="match_parent"
2030.     tools:context=".Welcome">
2031.     <TextView
2032.         android:id="@+id/mainword"
2033.         android:layout_width="fill_parent"
2034.         android:layout_height="fill_parent"
2035.         android:gravity="center"
2036.         android:textSize="22dp"
2037.         tools:ignore="MissingConstraints" />
2038. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2039. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2040.     xmlns:app="http://schemas.android.com/apk/res-auto"
2041.     xmlns:tools="http://schemas.android.com/tools"
2042.     android:layout_width="match_parent"
2043.     android:layout_height="match_parent"
2044.     tools:context=".Welcome">
2045.     <TextView
2046.         android:id="@+id/mainword"
2047.         android:layout_width="fill_parent"
2048.         android:layout_height="fill_parent"
2049.         android:gravity="center"
2050.         android:textSize="22dp"
2051.         tools:ignore="MissingConstraints" />
2052. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_weight="1"
2053. <?xml version="1.0" encoding="utf-8"?>
2054. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2055.     xmlns:app="http://schemas.android.com/apk/res-auto"
2056.     xmlns:tools="http://schemas.android.com/tools"
2057.     android:layout_width="match_parent"
2058.     android:layout_height="match_parent"
2059.     tools:context=".Welcome">
2060.     <TextView
2061.         android:id="@+id/mainword"
2062.         android:layout_width="fill_parent"
2063.         android:layout_height="fill_parent"
2064.         android:gravity="center"
2065.         android:textSize="22dp"
2066.         tools:ignore="MissingConstraints" />
2067. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2068. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2069.     xmlns:app="http://schemas.android.com/apk/res-auto"
2070.     xmlns:tools="http://schemas.android.com/tools"
2071.     android:layout_width="match_parent"
2072.     android:layout_height="match_parent"
2073.     tools:context=".Welcome">
2074.     <TextView
2075.         android:id="@+id/mainword"
2076.         android:layout_width="fill_parent"
2077.         android:layout_height="fill_parent"
2078.         android:gravity="center"
2079.         android:textSize="22dp"
2080.         tools:ignore="MissingConstraints" />
2081. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2082. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2083.     xmlns:app="http://schemas.android.com/apk/res-auto"
2084.     xmlns:tools="http://schemas.android.com/tools"
2085.     android:layout_width="match_parent"
2086.     android:layout_height="match_parent"
2087.     tools:context=".Welcome">
2088.     <TextView
2089.         android:id="@+id/mainword"
2090.         android:layout_width="fill_parent"
2091.         android:layout_height="fill_parent"
2092.         android:gravity="center"
2093.         android:textSize="22dp"
2094.         tools:ignore="MissingConstraints" />
2095. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2096. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2097.     xmlns:app="http://schemas.android.com/apk/res-auto"
2098.     xmlns:tools="http://schemas.android.com/tools"
2099.     android:layout_width="match_parent"
2100.     android:layout_height="match_parent"
2101.     tools:context=".Welcome">
2102.     <TextView
2103.         android:id="@+id/mainword"
2104.         android:layout_width="fill_parent"
2105.         android:layout_height="fill_parent"
2106.         android:gravity="center"
2107.         android:textSize="22dp"
2108.         tools:ignore="MissingConstraints" />
2109. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_marginRight="20dp"
2110. <?xml version="1.0" encoding="utf-8"?>
2111. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2112.     xmlns:app="http://schemas.android.com/apk/res-auto"
2113.     xmlns:tools="http://schemas.android.com/tools"
2114.     android:layout_width="match_parent"
2115.     android:layout_height="match_parent"
2116.     tools:context=".Welcome">
2117.     <TextView
2118.         android:id="@+id/mainword"
2119.         android:layout_width="fill_parent"
2120.         android:layout_height="fill_parent"
2121.         android:gravity="center"
2122.         android:textSize="22dp"
2123.         tools:ignore="MissingConstraints" />
2124. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2125. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2126.     xmlns:app="http://schemas.android.com/apk/res-auto"
2127.     xmlns:tools="http://schemas.android.com/tools"
2128.     android:layout_width="match_parent"
2129.     android:layout_height="match_parent"
2130.     tools:context=".Welcome">
2131.     <TextView
2132.         android:id="@+id/mainword"
2133.         android:layout_width="fill_parent"
2134.         android:layout_height="fill_parent"
2135.         android:gravity="center"
2136.         android:textSize="22dp"
2137.         tools:ignore="MissingConstraints" />
2138. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2139. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2140.     xmlns:app="http://schemas.android.com/apk/res-auto"
2141.     xmlns:tools="http://schemas.android.com/tools"
2142.     android:layout_width="match_parent"
2143.     android:layout_height="match_parent"
2144.     tools:context=".Welcome">
2145.     <TextView
2146.         android:id="@+id/mainword"
2147.         android:layout_width="fill_parent"
2148.         android:layout_height="fill_parent"
2149.         android:gravity="center"
2150.         android:textSize="22dp"
2151.         tools:ignore="MissingConstraints" />
2152. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2153. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2154.     xmlns:app="http://schemas.android.com/apk/res-auto"
2155.     xmlns:tools="http://schemas.android.com/tools"
2156.     android:layout_width="match_parent"
2157.     android:layout_height="match_parent"
2158.     tools:context=".Welcome">
2159.     <TextView
2160.         android:id="@+id/mainword"
2161.         android:layout_width="fill_parent"
2162.         android:layout_height="fill_parent"
2163.         android:gravity="center"
2164.         android:textSize="22dp"
2165.         tools:ignore="MissingConstraints" />
2166. </androidx.constraintlayout.widget.ConstraintLayout>/>
2167. <?xml version="1.0" encoding="utf-8"?>
2168. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2169.     xmlns:app="http://schemas.android.com/apk/res-auto"
2170.     xmlns:tools="http://schemas.android.com/tools"
2171.     android:layout_width="match_parent"
2172.     android:layout_height="match_parent"
2173.     tools:context=".Welcome">
2174.     <TextView
2175.         android:id="@+id/mainword"
2176.         android:layout_width="fill_parent"
2177.         android:layout_height="fill_parent"
2178.         android:gravity="center"
2179.         android:textSize="22dp"
2180.         tools:ignore="MissingConstraints" />
2181. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2182. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2183.     xmlns:app="http://schemas.android.com/apk/res-auto"
2184.     xmlns:tools="http://schemas.android.com/tools"
2185.     android:layout_width="match_parent"
2186.     android:layout_height="match_parent"
2187.     tools:context=".Welcome">
2188.     <TextView
2189.         android:id="@+id/mainword"
2190.         android:layout_width="fill_parent"
2191.         android:layout_height="fill_parent"
2192.         android:gravity="center"
2193.         android:textSize="22dp"
2194.         tools:ignore="MissingConstraints" />
2195. </androidx.constraintlayout.widget.ConstraintLayout></LinearLayout>
2196. <?xml version="1.0" encoding="utf-8"?>
2197. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2198.     xmlns:app="http://schemas.android.com/apk/res-auto"
2199.     xmlns:tools="http://schemas.android.com/tools"
2200.     android:layout_width="match_parent"
2201.     android:layout_height="match_parent"
2202.     tools:context=".Welcome">
2203.     <TextView
2204.         android:id="@+id/mainword"
2205.         android:layout_width="fill_parent"
2206.         android:layout_height="fill_parent"
2207.         android:gravity="center"
2208.         android:textSize="22dp"
2209.         tools:ignore="MissingConstraints" />
2210. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2211. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2212.     xmlns:app="http://schemas.android.com/apk/res-auto"
2213.     xmlns:tools="http://schemas.android.com/tools"
2214.     android:layout_width="match_parent"
2215.     android:layout_height="match_parent"
2216.     tools:context=".Welcome">
2217.     <TextView
2218.         android:id="@+id/mainword"
2219.         android:layout_width="fill_parent"
2220.         android:layout_height="fill_parent"
2221.         android:gravity="center"
2222.         android:textSize="22dp"
2223.         tools:ignore="MissingConstraints" />
2224. </androidx.constraintlayout.widget.ConstraintLayout><LinearLayout
2225. <?xml version="1.0" encoding="utf-8"?>
2226. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2227.     xmlns:app="http://schemas.android.com/apk/res-auto"
2228.     xmlns:tools="http://schemas.android.com/tools"
2229.     android:layout_width="match_parent"
2230.     android:layout_height="match_parent"
2231.     tools:context=".Welcome">
2232.     <TextView
2233.         android:id="@+id/mainword"
2234.         android:layout_width="fill_parent"
2235.         android:layout_height="fill_parent"
2236.         android:gravity="center"
2237.         android:textSize="22dp"
2238.         tools:ignore="MissingConstraints" />
2239. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2240. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2241.     xmlns:app="http://schemas.android.com/apk/res-auto"
2242.     xmlns:tools="http://schemas.android.com/tools"
2243.     android:layout_width="match_parent"
2244.     android:layout_height="match_parent"
2245.     tools:context=".Welcome">
2246.     <TextView
2247.         android:id="@+id/mainword"
2248.         android:layout_width="fill_parent"
2249.         android:layout_height="fill_parent"
2250.         android:gravity="center"
2251.         android:textSize="22dp"
2252.         tools:ignore="MissingConstraints" />
2253. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2254. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2255.     xmlns:app="http://schemas.android.com/apk/res-auto"
2256.     xmlns:tools="http://schemas.android.com/tools"
2257.     android:layout_width="match_parent"
2258.     android:layout_height="match_parent"
2259.     tools:context=".Welcome">
2260.     <TextView
2261.         android:id="@+id/mainword"
2262.         android:layout_width="fill_parent"
2263.         android:layout_height="fill_parent"
2264.         android:gravity="center"
2265.         android:textSize="22dp"
2266.         tools:ignore="MissingConstraints" />
2267. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="match_parent"
2268. <?xml version="1.0" encoding="utf-8"?>
2269. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2270.     xmlns:app="http://schemas.android.com/apk/res-auto"
2271.     xmlns:tools="http://schemas.android.com/tools"
2272.     android:layout_width="match_parent"
2273.     android:layout_height="match_parent"
2274.     tools:context=".Welcome">
2275.     <TextView
2276.         android:id="@+id/mainword"
2277.         android:layout_width="fill_parent"
2278.         android:layout_height="fill_parent"
2279.         android:gravity="center"
2280.         android:textSize="22dp"
2281.         tools:ignore="MissingConstraints" />
2282. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2283. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2284.     xmlns:app="http://schemas.android.com/apk/res-auto"
2285.     xmlns:tools="http://schemas.android.com/tools"
2286.     android:layout_width="match_parent"
2287.     android:layout_height="match_parent"
2288.     tools:context=".Welcome">
2289.     <TextView
2290.         android:id="@+id/mainword"
2291.         android:layout_width="fill_parent"
2292.         android:layout_height="fill_parent"
2293.         android:gravity="center"
2294.         android:textSize="22dp"
2295.         tools:ignore="MissingConstraints" />
2296. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2297. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2298.     xmlns:app="http://schemas.android.com/apk/res-auto"
2299.     xmlns:tools="http://schemas.android.com/tools"
2300.     android:layout_width="match_parent"
2301.     android:layout_height="match_parent"
2302.     tools:context=".Welcome">
2303.     <TextView
2304.         android:id="@+id/mainword"
2305.         android:layout_width="fill_parent"
2306.         android:layout_height="fill_parent"
2307.         android:gravity="center"
2308.         android:textSize="22dp"
2309.         tools:ignore="MissingConstraints" />
2310. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
2311. <?xml version="1.0" encoding="utf-8"?>
2312. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2313.     xmlns:app="http://schemas.android.com/apk/res-auto"
2314.     xmlns:tools="http://schemas.android.com/tools"
2315.     android:layout_width="match_parent"
2316.     android:layout_height="match_parent"
2317.     tools:context=".Welcome">
2318.     <TextView
2319.         android:id="@+id/mainword"
2320.         android:layout_width="fill_parent"
2321.         android:layout_height="fill_parent"
2322.         android:gravity="center"
2323.         android:textSize="22dp"
2324.         tools:ignore="MissingConstraints" />
2325. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2326. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2327.     xmlns:app="http://schemas.android.com/apk/res-auto"
2328.     xmlns:tools="http://schemas.android.com/tools"
2329.     android:layout_width="match_parent"
2330.     android:layout_height="match_parent"
2331.     tools:context=".Welcome">
2332.     <TextView
2333.         android:id="@+id/mainword"
2334.         android:layout_width="fill_parent"
2335.         android:layout_height="fill_parent"
2336.         android:gravity="center"
2337.         android:textSize="22dp"
2338.         tools:ignore="MissingConstraints" />
2339. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2340. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2341.     xmlns:app="http://schemas.android.com/apk/res-auto"
2342.     xmlns:tools="http://schemas.android.com/tools"
2343.     android:layout_width="match_parent"
2344.     android:layout_height="match_parent"
2345.     tools:context=".Welcome">
2346.     <TextView
2347.         android:id="@+id/mainword"
2348.         android:layout_width="fill_parent"
2349.         android:layout_height="fill_parent"
2350.         android:gravity="center"
2351.         android:textSize="22dp"
2352.         tools:ignore="MissingConstraints" />
2353. </androidx.constraintlayout.widget.ConstraintLayout>android:orientation="horizontal">
2354. <?xml version="1.0" encoding="utf-8"?>
2355. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2356.     xmlns:app="http://schemas.android.com/apk/res-auto"
2357.     xmlns:tools="http://schemas.android.com/tools"
2358.     android:layout_width="match_parent"
2359.     android:layout_height="match_parent"
2360.     tools:context=".Welcome">
2361.     <TextView
2362.         android:id="@+id/mainword"
2363.         android:layout_width="fill_parent"
2364.         android:layout_height="fill_parent"
2365.         android:gravity="center"
2366.         android:textSize="22dp"
2367.         tools:ignore="MissingConstraints" />
2368. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2369. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2370.     xmlns:app="http://schemas.android.com/apk/res-auto"
2371.     xmlns:tools="http://schemas.android.com/tools"
2372.     android:layout_width="match_parent"
2373.     android:layout_height="match_parent"
2374.     tools:context=".Welcome">
2375.     <TextView
2376.         android:id="@+id/mainword"
2377.         android:layout_width="fill_parent"
2378.         android:layout_height="fill_parent"
2379.         android:gravity="center"
2380.         android:textSize="22dp"
2381.         tools:ignore="MissingConstraints" />
2382. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2383. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2384.     xmlns:app="http://schemas.android.com/apk/res-auto"
2385.     xmlns:tools="http://schemas.android.com/tools"
2386.     android:layout_width="match_parent"
2387.     android:layout_height="match_parent"
2388.     tools:context=".Welcome">
2389.     <TextView
2390.         android:id="@+id/mainword"
2391.         android:layout_width="fill_parent"
2392.         android:layout_height="fill_parent"
2393.         android:gravity="center"
2394.         android:textSize="22dp"
2395.         tools:ignore="MissingConstraints" />
2396. </androidx.constraintlayout.widget.ConstraintLayout><Button
2397. <?xml version="1.0" encoding="utf-8"?>
2398. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2399.     xmlns:app="http://schemas.android.com/apk/res-auto"
2400.     xmlns:tools="http://schemas.android.com/tools"
2401.     android:layout_width="match_parent"
2402.     android:layout_height="match_parent"
2403.     tools:context=".Welcome">
2404.     <TextView
2405.         android:id="@+id/mainword"
2406.         android:layout_width="fill_parent"
2407.         android:layout_height="fill_parent"
2408.         android:gravity="center"
2409.         android:textSize="22dp"
2410.         tools:ignore="MissingConstraints" />
2411. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2412. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2413.     xmlns:app="http://schemas.android.com/apk/res-auto"
2414.     xmlns:tools="http://schemas.android.com/tools"
2415.     android:layout_width="match_parent"
2416.     android:layout_height="match_parent"
2417.     tools:context=".Welcome">
2418.     <TextView
2419.         android:id="@+id/mainword"
2420.         android:layout_width="fill_parent"
2421.         android:layout_height="fill_parent"
2422.         android:gravity="center"
2423.         android:textSize="22dp"
2424.         tools:ignore="MissingConstraints" />
2425. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2426. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2427.     xmlns:app="http://schemas.android.com/apk/res-auto"
2428.     xmlns:tools="http://schemas.android.com/tools"
2429.     android:layout_width="match_parent"
2430.     android:layout_height="match_parent"
2431.     tools:context=".Welcome">
2432.     <TextView
2433.         android:id="@+id/mainword"
2434.         android:layout_width="fill_parent"
2435.         android:layout_height="fill_parent"
2436.         android:gravity="center"
2437.         android:textSize="22dp"
2438.         tools:ignore="MissingConstraints" />
2439. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2440. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2441.     xmlns:app="http://schemas.android.com/apk/res-auto"
2442.     xmlns:tools="http://schemas.android.com/tools"
2443.     android:layout_width="match_parent"
2444.     android:layout_height="match_parent"
2445.     tools:context=".Welcome">
2446.     <TextView
2447.         android:id="@+id/mainword"
2448.         android:layout_width="fill_parent"
2449.         android:layout_height="fill_parent"
2450.         android:gravity="center"
2451.         android:textSize="22dp"
2452.         tools:ignore="MissingConstraints" />
2453. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/login"
2454. <?xml version="1.0" encoding="utf-8"?>
2455. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2456.     xmlns:app="http://schemas.android.com/apk/res-auto"
2457.     xmlns:tools="http://schemas.android.com/tools"
2458.     android:layout_width="match_parent"
2459.     android:layout_height="match_parent"
2460.     tools:context=".Welcome">
2461.     <TextView
2462.         android:id="@+id/mainword"
2463.         android:layout_width="fill_parent"
2464.         android:layout_height="fill_parent"
2465.         android:gravity="center"
2466.         android:textSize="22dp"
2467.         tools:ignore="MissingConstraints" />
2468. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2469. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2470.     xmlns:app="http://schemas.android.com/apk/res-auto"
2471.     xmlns:tools="http://schemas.android.com/tools"
2472.     android:layout_width="match_parent"
2473.     android:layout_height="match_parent"
2474.     tools:context=".Welcome">
2475.     <TextView
2476.         android:id="@+id/mainword"
2477.         android:layout_width="fill_parent"
2478.         android:layout_height="fill_parent"
2479.         android:gravity="center"
2480.         android:textSize="22dp"
2481.         tools:ignore="MissingConstraints" />
2482. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2483. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2484.     xmlns:app="http://schemas.android.com/apk/res-auto"
2485.     xmlns:tools="http://schemas.android.com/tools"
2486.     android:layout_width="match_parent"
2487.     android:layout_height="match_parent"
2488.     tools:context=".Welcome">
2489.     <TextView
2490.         android:id="@+id/mainword"
2491.         android:layout_width="fill_parent"
2492.         android:layout_height="fill_parent"
2493.         android:gravity="center"
2494.         android:textSize="22dp"
2495.         tools:ignore="MissingConstraints" />
2496. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2497. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2498.     xmlns:app="http://schemas.android.com/apk/res-auto"
2499.     xmlns:tools="http://schemas.android.com/tools"
2500.     android:layout_width="match_parent"
2501.     android:layout_height="match_parent"
2502.     tools:context=".Welcome">
2503.     <TextView
2504.         android:id="@+id/mainword"
2505.         android:layout_width="fill_parent"
2506.         android:layout_height="fill_parent"
2507.         android:gravity="center"
2508.         android:textSize="22dp"
2509.         tools:ignore="MissingConstraints" />
2510. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="wrap_content"
2511. <?xml version="1.0" encoding="utf-8"?>
2512. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2513.     xmlns:app="http://schemas.android.com/apk/res-auto"
2514.     xmlns:tools="http://schemas.android.com/tools"
2515.     android:layout_width="match_parent"
2516.     android:layout_height="match_parent"
2517.     tools:context=".Welcome">
2518.     <TextView
2519.         android:id="@+id/mainword"
2520.         android:layout_width="fill_parent"
2521.         android:layout_height="fill_parent"
2522.         android:gravity="center"
2523.         android:textSize="22dp"
2524.         tools:ignore="MissingConstraints" />
2525. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2526. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2527.     xmlns:app="http://schemas.android.com/apk/res-auto"
2528.     xmlns:tools="http://schemas.android.com/tools"
2529.     android:layout_width="match_parent"
2530.     android:layout_height="match_parent"
2531.     tools:context=".Welcome">
2532.     <TextView
2533.         android:id="@+id/mainword"
2534.         android:layout_width="fill_parent"
2535.         android:layout_height="fill_parent"
2536.         android:gravity="center"
2537.         android:textSize="22dp"
2538.         tools:ignore="MissingConstraints" />
2539. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2540. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2541.     xmlns:app="http://schemas.android.com/apk/res-auto"
2542.     xmlns:tools="http://schemas.android.com/tools"
2543.     android:layout_width="match_parent"
2544.     android:layout_height="match_parent"
2545.     tools:context=".Welcome">
2546.     <TextView
2547.         android:id="@+id/mainword"
2548.         android:layout_width="fill_parent"
2549.         android:layout_height="fill_parent"
2550.         android:gravity="center"
2551.         android:textSize="22dp"
2552.         tools:ignore="MissingConstraints" />
2553. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2554. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2555.     xmlns:app="http://schemas.android.com/apk/res-auto"
2556.     xmlns:tools="http://schemas.android.com/tools"
2557.     android:layout_width="match_parent"
2558.     android:layout_height="match_parent"
2559.     tools:context=".Welcome">
2560.     <TextView
2561.         android:id="@+id/mainword"
2562.         android:layout_width="fill_parent"
2563.         android:layout_height="fill_parent"
2564.         android:gravity="center"
2565.         android:textSize="22dp"
2566.         tools:ignore="MissingConstraints" />
2567. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
2568. <?xml version="1.0" encoding="utf-8"?>
2569. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2570.     xmlns:app="http://schemas.android.com/apk/res-auto"
2571.     xmlns:tools="http://schemas.android.com/tools"
2572.     android:layout_width="match_parent"
2573.     android:layout_height="match_parent"
2574.     tools:context=".Welcome">
2575.     <TextView
2576.         android:id="@+id/mainword"
2577.         android:layout_width="fill_parent"
2578.         android:layout_height="fill_parent"
2579.         android:gravity="center"
2580.         android:textSize="22dp"
2581.         tools:ignore="MissingConstraints" />
2582. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2583. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2584.     xmlns:app="http://schemas.android.com/apk/res-auto"
2585.     xmlns:tools="http://schemas.android.com/tools"
2586.     android:layout_width="match_parent"
2587.     android:layout_height="match_parent"
2588.     tools:context=".Welcome">
2589.     <TextView
2590.         android:id="@+id/mainword"
2591.         android:layout_width="fill_parent"
2592.         android:layout_height="fill_parent"
2593.         android:gravity="center"
2594.         android:textSize="22dp"
2595.         tools:ignore="MissingConstraints" />
2596. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2597. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2598.     xmlns:app="http://schemas.android.com/apk/res-auto"
2599.     xmlns:tools="http://schemas.android.com/tools"
2600.     android:layout_width="match_parent"
2601.     android:layout_height="match_parent"
2602.     tools:context=".Welcome">
2603.     <TextView
2604.         android:id="@+id/mainword"
2605.         android:layout_width="fill_parent"
2606.         android:layout_height="fill_parent"
2607.         android:gravity="center"
2608.         android:textSize="22dp"
2609.         tools:ignore="MissingConstraints" />
2610. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2611. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2612.     xmlns:app="http://schemas.android.com/apk/res-auto"
2613.     xmlns:tools="http://schemas.android.com/tools"
2614.     android:layout_width="match_parent"
2615.     android:layout_height="match_parent"
2616.     tools:context=".Welcome">
2617.     <TextView
2618.         android:id="@+id/mainword"
2619.         android:layout_width="fill_parent"
2620.         android:layout_height="fill_parent"
2621.         android:gravity="center"
2622.         android:textSize="22dp"
2623.         tools:ignore="MissingConstraints" />
2624. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_weight="1"
2625. <?xml version="1.0" encoding="utf-8"?>
2626. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2627.     xmlns:app="http://schemas.android.com/apk/res-auto"
2628.     xmlns:tools="http://schemas.android.com/tools"
2629.     android:layout_width="match_parent"
2630.     android:layout_height="match_parent"
2631.     tools:context=".Welcome">
2632.     <TextView
2633.         android:id="@+id/mainword"
2634.         android:layout_width="fill_parent"
2635.         android:layout_height="fill_parent"
2636.         android:gravity="center"
2637.         android:textSize="22dp"
2638.         tools:ignore="MissingConstraints" />
2639. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2640. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2641.     xmlns:app="http://schemas.android.com/apk/res-auto"
2642.     xmlns:tools="http://schemas.android.com/tools"
2643.     android:layout_width="match_parent"
2644.     android:layout_height="match_parent"
2645.     tools:context=".Welcome">
2646.     <TextView
2647.         android:id="@+id/mainword"
2648.         android:layout_width="fill_parent"
2649.         android:layout_height="fill_parent"
2650.         android:gravity="center"
2651.         android:textSize="22dp"
2652.         tools:ignore="MissingConstraints" />
2653. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2654. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2655.     xmlns:app="http://schemas.android.com/apk/res-auto"
2656.     xmlns:tools="http://schemas.android.com/tools"
2657.     android:layout_width="match_parent"
2658.     android:layout_height="match_parent"
2659.     tools:context=".Welcome">
2660.     <TextView
2661.         android:id="@+id/mainword"
2662.         android:layout_width="fill_parent"
2663.         android:layout_height="fill_parent"
2664.         android:gravity="center"
2665.         android:textSize="22dp"
2666.         tools:ignore="MissingConstraints" />
2667. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2668. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2669.     xmlns:app="http://schemas.android.com/apk/res-auto"
2670.     xmlns:tools="http://schemas.android.com/tools"
2671.     android:layout_width="match_parent"
2672.     android:layout_height="match_parent"
2673.     tools:context=".Welcome">
2674.     <TextView
2675.         android:id="@+id/mainword"
2676.         android:layout_width="fill_parent"
2677.         android:layout_height="fill_parent"
2678.         android:gravity="center"
2679.         android:textSize="22dp"
2680.         tools:ignore="MissingConstraints" />
2681. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_margin="5dp"
2682. <?xml version="1.0" encoding="utf-8"?>
2683. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2684.     xmlns:app="http://schemas.android.com/apk/res-auto"
2685.     xmlns:tools="http://schemas.android.com/tools"
2686.     android:layout_width="match_parent"
2687.     android:layout_height="match_parent"
2688.     tools:context=".Welcome">
2689.     <TextView
2690.         android:id="@+id/mainword"
2691.         android:layout_width="fill_parent"
2692.         android:layout_height="fill_parent"
2693.         android:gravity="center"
2694.         android:textSize="22dp"
2695.         tools:ignore="MissingConstraints" />
2696. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2697. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2698.     xmlns:app="http://schemas.android.com/apk/res-auto"
2699.     xmlns:tools="http://schemas.android.com/tools"
2700.     android:layout_width="match_parent"
2701.     android:layout_height="match_parent"
2702.     tools:context=".Welcome">
2703.     <TextView
2704.         android:id="@+id/mainword"
2705.         android:layout_width="fill_parent"
2706.         android:layout_height="fill_parent"
2707.         android:gravity="center"
2708.         android:textSize="22dp"
2709.         tools:ignore="MissingConstraints" />
2710. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2711. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2712.     xmlns:app="http://schemas.android.com/apk/res-auto"
2713.     xmlns:tools="http://schemas.android.com/tools"
2714.     android:layout_width="match_parent"
2715.     android:layout_height="match_parent"
2716.     tools:context=".Welcome">
2717.     <TextView
2718.         android:id="@+id/mainword"
2719.         android:layout_width="fill_parent"
2720.         android:layout_height="fill_parent"
2721.         android:gravity="center"
2722.         android:textSize="22dp"
2723.         tools:ignore="MissingConstraints" />
2724. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2725. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2726.     xmlns:app="http://schemas.android.com/apk/res-auto"
2727.     xmlns:tools="http://schemas.android.com/tools"
2728.     android:layout_width="match_parent"
2729.     android:layout_height="match_parent"
2730.     tools:context=".Welcome">
2731.     <TextView
2732.         android:id="@+id/mainword"
2733.         android:layout_width="fill_parent"
2734.         android:layout_height="fill_parent"
2735.         android:gravity="center"
2736.         android:textSize="22dp"
2737.         tools:ignore="MissingConstraints" />
2738. </androidx.constraintlayout.widget.ConstraintLayout>android:text="登录"
2739. <?xml version="1.0" encoding="utf-8"?>
2740. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2741.     xmlns:app="http://schemas.android.com/apk/res-auto"
2742.     xmlns:tools="http://schemas.android.com/tools"
2743.     android:layout_width="match_parent"
2744.     android:layout_height="match_parent"
2745.     tools:context=".Welcome">
2746.     <TextView
2747.         android:id="@+id/mainword"
2748.         android:layout_width="fill_parent"
2749.         android:layout_height="fill_parent"
2750.         android:gravity="center"
2751.         android:textSize="22dp"
2752.         tools:ignore="MissingConstraints" />
2753. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2754. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2755.     xmlns:app="http://schemas.android.com/apk/res-auto"
2756.     xmlns:tools="http://schemas.android.com/tools"
2757.     android:layout_width="match_parent"
2758.     android:layout_height="match_parent"
2759.     tools:context=".Welcome">
2760.     <TextView
2761.         android:id="@+id/mainword"
2762.         android:layout_width="fill_parent"
2763.         android:layout_height="fill_parent"
2764.         android:gravity="center"
2765.         android:textSize="22dp"
2766.         tools:ignore="MissingConstraints" />
2767. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2768. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2769.     xmlns:app="http://schemas.android.com/apk/res-auto"
2770.     xmlns:tools="http://schemas.android.com/tools"
2771.     android:layout_width="match_parent"
2772.     android:layout_height="match_parent"
2773.     tools:context=".Welcome">
2774.     <TextView
2775.         android:id="@+id/mainword"
2776.         android:layout_width="fill_parent"
2777.         android:layout_height="fill_parent"
2778.         android:gravity="center"
2779.         android:textSize="22dp"
2780.         tools:ignore="MissingConstraints" />
2781. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2782. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2783.     xmlns:app="http://schemas.android.com/apk/res-auto"
2784.     xmlns:tools="http://schemas.android.com/tools"
2785.     android:layout_width="match_parent"
2786.     android:layout_height="match_parent"
2787.     tools:context=".Welcome">
2788.     <TextView
2789.         android:id="@+id/mainword"
2790.         android:layout_width="fill_parent"
2791.         android:layout_height="fill_parent"
2792.         android:gravity="center"
2793.         android:textSize="22dp"
2794.         tools:ignore="MissingConstraints" />
2795. </androidx.constraintlayout.widget.ConstraintLayout>/>
2796. <?xml version="1.0" encoding="utf-8"?>
2797. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2798.     xmlns:app="http://schemas.android.com/apk/res-auto"
2799.     xmlns:tools="http://schemas.android.com/tools"
2800.     android:layout_width="match_parent"
2801.     android:layout_height="match_parent"
2802.     tools:context=".Welcome">
2803.     <TextView
2804.         android:id="@+id/mainword"
2805.         android:layout_width="fill_parent"
2806.         android:layout_height="fill_parent"
2807.         android:gravity="center"
2808.         android:textSize="22dp"
2809.         tools:ignore="MissingConstraints" />
2810. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2811. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2812.     xmlns:app="http://schemas.android.com/apk/res-auto"
2813.     xmlns:tools="http://schemas.android.com/tools"
2814.     android:layout_width="match_parent"
2815.     android:layout_height="match_parent"
2816.     tools:context=".Welcome">
2817.     <TextView
2818.         android:id="@+id/mainword"
2819.         android:layout_width="fill_parent"
2820.         android:layout_height="fill_parent"
2821.         android:gravity="center"
2822.         android:textSize="22dp"
2823.         tools:ignore="MissingConstraints" />
2824. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2825. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2826.     xmlns:app="http://schemas.android.com/apk/res-auto"
2827.     xmlns:tools="http://schemas.android.com/tools"
2828.     android:layout_width="match_parent"
2829.     android:layout_height="match_parent"
2830.     tools:context=".Welcome">
2831.     <TextView
2832.         android:id="@+id/mainword"
2833.         android:layout_width="fill_parent"
2834.         android:layout_height="fill_parent"
2835.         android:gravity="center"
2836.         android:textSize="22dp"
2837.         tools:ignore="MissingConstraints" />
2838. </androidx.constraintlayout.widget.ConstraintLayout><Button
2839. <?xml version="1.0" encoding="utf-8"?>
2840. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2841.     xmlns:app="http://schemas.android.com/apk/res-auto"
2842.     xmlns:tools="http://schemas.android.com/tools"
2843.     android:layout_width="match_parent"
2844.     android:layout_height="match_parent"
2845.     tools:context=".Welcome">
2846.     <TextView
2847.         android:id="@+id/mainword"
2848.         android:layout_width="fill_parent"
2849.         android:layout_height="fill_parent"
2850.         android:gravity="center"
2851.         android:textSize="22dp"
2852.         tools:ignore="MissingConstraints" />
2853. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2854. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2855.     xmlns:app="http://schemas.android.com/apk/res-auto"
2856.     xmlns:tools="http://schemas.android.com/tools"
2857.     android:layout_width="match_parent"
2858.     android:layout_height="match_parent"
2859.     tools:context=".Welcome">
2860.     <TextView
2861.         android:id="@+id/mainword"
2862.         android:layout_width="fill_parent"
2863.         android:layout_height="fill_parent"
2864.         android:gravity="center"
2865.         android:textSize="22dp"
2866.         tools:ignore="MissingConstraints" />
2867. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2868. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2869.     xmlns:app="http://schemas.android.com/apk/res-auto"
2870.     xmlns:tools="http://schemas.android.com/tools"
2871.     android:layout_width="match_parent"
2872.     android:layout_height="match_parent"
2873.     tools:context=".Welcome">
2874.     <TextView
2875.         android:id="@+id/mainword"
2876.         android:layout_width="fill_parent"
2877.         android:layout_height="fill_parent"
2878.         android:gravity="center"
2879.         android:textSize="22dp"
2880.         tools:ignore="MissingConstraints" />
2881. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2882. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2883.     xmlns:app="http://schemas.android.com/apk/res-auto"
2884.     xmlns:tools="http://schemas.android.com/tools"
2885.     android:layout_width="match_parent"
2886.     android:layout_height="match_parent"
2887.     tools:context=".Welcome">
2888.     <TextView
2889.         android:id="@+id/mainword"
2890.         android:layout_width="fill_parent"
2891.         android:layout_height="fill_parent"
2892.         android:gravity="center"
2893.         android:textSize="22dp"
2894.         tools:ignore="MissingConstraints" />
2895. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/reg"
2896. <?xml version="1.0" encoding="utf-8"?>
2897. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2898.     xmlns:app="http://schemas.android.com/apk/res-auto"
2899.     xmlns:tools="http://schemas.android.com/tools"
2900.     android:layout_width="match_parent"
2901.     android:layout_height="match_parent"
2902.     tools:context=".Welcome">
2903.     <TextView
2904.         android:id="@+id/mainword"
2905.         android:layout_width="fill_parent"
2906.         android:layout_height="fill_parent"
2907.         android:gravity="center"
2908.         android:textSize="22dp"
2909.         tools:ignore="MissingConstraints" />
2910. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2911. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2912.     xmlns:app="http://schemas.android.com/apk/res-auto"
2913.     xmlns:tools="http://schemas.android.com/tools"
2914.     android:layout_width="match_parent"
2915.     android:layout_height="match_parent"
2916.     tools:context=".Welcome">
2917.     <TextView
2918.         android:id="@+id/mainword"
2919.         android:layout_width="fill_parent"
2920.         android:layout_height="fill_parent"
2921.         android:gravity="center"
2922.         android:textSize="22dp"
2923.         tools:ignore="MissingConstraints" />
2924. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2925. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2926.     xmlns:app="http://schemas.android.com/apk/res-auto"
2927.     xmlns:tools="http://schemas.android.com/tools"
2928.     android:layout_width="match_parent"
2929.     android:layout_height="match_parent"
2930.     tools:context=".Welcome">
2931.     <TextView
2932.         android:id="@+id/mainword"
2933.         android:layout_width="fill_parent"
2934.         android:layout_height="fill_parent"
2935.         android:gravity="center"
2936.         android:textSize="22dp"
2937.         tools:ignore="MissingConstraints" />
2938. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2939. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2940.     xmlns:app="http://schemas.android.com/apk/res-auto"
2941.     xmlns:tools="http://schemas.android.com/tools"
2942.     android:layout_width="match_parent"
2943.     android:layout_height="match_parent"
2944.     tools:context=".Welcome">
2945.     <TextView
2946.         android:id="@+id/mainword"
2947.         android:layout_width="fill_parent"
2948.         android:layout_height="fill_parent"
2949.         android:gravity="center"
2950.         android:textSize="22dp"
2951.         tools:ignore="MissingConstraints" />
2952. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="wrap_content"
2953. <?xml version="1.0" encoding="utf-8"?>
2954. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2955.     xmlns:app="http://schemas.android.com/apk/res-auto"
2956.     xmlns:tools="http://schemas.android.com/tools"
2957.     android:layout_width="match_parent"
2958.     android:layout_height="match_parent"
2959.     tools:context=".Welcome">
2960.     <TextView
2961.         android:id="@+id/mainword"
2962.         android:layout_width="fill_parent"
2963.         android:layout_height="fill_parent"
2964.         android:gravity="center"
2965.         android:textSize="22dp"
2966.         tools:ignore="MissingConstraints" />
2967. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2968. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2969.     xmlns:app="http://schemas.android.com/apk/res-auto"
2970.     xmlns:tools="http://schemas.android.com/tools"
2971.     android:layout_width="match_parent"
2972.     android:layout_height="match_parent"
2973.     tools:context=".Welcome">
2974.     <TextView
2975.         android:id="@+id/mainword"
2976.         android:layout_width="fill_parent"
2977.         android:layout_height="fill_parent"
2978.         android:gravity="center"
2979.         android:textSize="22dp"
2980.         tools:ignore="MissingConstraints" />
2981. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2982. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2983.     xmlns:app="http://schemas.android.com/apk/res-auto"
2984.     xmlns:tools="http://schemas.android.com/tools"
2985.     android:layout_width="match_parent"
2986.     android:layout_height="match_parent"
2987.     tools:context=".Welcome">
2988.     <TextView
2989.         android:id="@+id/mainword"
2990.         android:layout_width="fill_parent"
2991.         android:layout_height="fill_parent"
2992.         android:gravity="center"
2993.         android:textSize="22dp"
2994.         tools:ignore="MissingConstraints" />
2995. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2996. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2997.     xmlns:app="http://schemas.android.com/apk/res-auto"
2998.     xmlns:tools="http://schemas.android.com/tools"
2999.     android:layout_width="match_parent"
3000.     android:layout_height="match_parent"
3001.     tools:context=".Welcome">
3002.     <TextView
3003.         android:id="@+id/mainword"
3004.         android:layout_width="fill_parent"
3005.         android:layout_height="fill_parent"
3006.         android:gravity="center"
3007.         android:textSize="22dp"
3008.         tools:ignore="MissingConstraints" />
3009. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
3010. <?xml version="1.0" encoding="utf-8"?>
3011. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3012.     xmlns:app="http://schemas.android.com/apk/res-auto"
3013.     xmlns:tools="http://schemas.android.com/tools"
3014.     android:layout_width="match_parent"
3015.     android:layout_height="match_parent"
3016.     tools:context=".Welcome">
3017.     <TextView
3018.         android:id="@+id/mainword"
3019.         android:layout_width="fill_parent"
3020.         android:layout_height="fill_parent"
3021.         android:gravity="center"
3022.         android:textSize="22dp"
3023.         tools:ignore="MissingConstraints" />
3024. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3025. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3026.     xmlns:app="http://schemas.android.com/apk/res-auto"
3027.     xmlns:tools="http://schemas.android.com/tools"
3028.     android:layout_width="match_parent"
3029.     android:layout_height="match_parent"
3030.     tools:context=".Welcome">
3031.     <TextView
3032.         android:id="@+id/mainword"
3033.         android:layout_width="fill_parent"
3034.         android:layout_height="fill_parent"
3035.         android:gravity="center"
3036.         android:textSize="22dp"
3037.         tools:ignore="MissingConstraints" />
3038. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3039. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3040.     xmlns:app="http://schemas.android.com/apk/res-auto"
3041.     xmlns:tools="http://schemas.android.com/tools"
3042.     android:layout_width="match_parent"
3043.     android:layout_height="match_parent"
3044.     tools:context=".Welcome">
3045.     <TextView
3046.         android:id="@+id/mainword"
3047.         android:layout_width="fill_parent"
3048.         android:layout_height="fill_parent"
3049.         android:gravity="center"
3050.         android:textSize="22dp"
3051.         tools:ignore="MissingConstraints" />
3052. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3053. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3054.     xmlns:app="http://schemas.android.com/apk/res-auto"
3055.     xmlns:tools="http://schemas.android.com/tools"
3056.     android:layout_width="match_parent"
3057.     android:layout_height="match_parent"
3058.     tools:context=".Welcome">
3059.     <TextView
3060.         android:id="@+id/mainword"
3061.         android:layout_width="fill_parent"
3062.         android:layout_height="fill_parent"
3063.         android:gravity="center"
3064.         android:textSize="22dp"
3065.         tools:ignore="MissingConstraints" />
3066. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_weight="1"
3067. <?xml version="1.0" encoding="utf-8"?>
3068. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3069.     xmlns:app="http://schemas.android.com/apk/res-auto"
3070.     xmlns:tools="http://schemas.android.com/tools"
3071.     android:layout_width="match_parent"
3072.     android:layout_height="match_parent"
3073.     tools:context=".Welcome">
3074.     <TextView
3075.         android:id="@+id/mainword"
3076.         android:layout_width="fill_parent"
3077.         android:layout_height="fill_parent"
3078.         android:gravity="center"
3079.         android:textSize="22dp"
3080.         tools:ignore="MissingConstraints" />
3081. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3082. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3083.     xmlns:app="http://schemas.android.com/apk/res-auto"
3084.     xmlns:tools="http://schemas.android.com/tools"
3085.     android:layout_width="match_parent"
3086.     android:layout_height="match_parent"
3087.     tools:context=".Welcome">
3088.     <TextView
3089.         android:id="@+id/mainword"
3090.         android:layout_width="fill_parent"
3091.         android:layout_height="fill_parent"
3092.         android:gravity="center"
3093.         android:textSize="22dp"
3094.         tools:ignore="MissingConstraints" />
3095. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3096. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3097.     xmlns:app="http://schemas.android.com/apk/res-auto"
3098.     xmlns:tools="http://schemas.android.com/tools"
3099.     android:layout_width="match_parent"
3100.     android:layout_height="match_parent"
3101.     tools:context=".Welcome">
3102.     <TextView
3103.         android:id="@+id/mainword"
3104.         android:layout_width="fill_parent"
3105.         android:layout_height="fill_parent"
3106.         android:gravity="center"
3107.         android:textSize="22dp"
3108.         tools:ignore="MissingConstraints" />
3109. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3110. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3111.     xmlns:app="http://schemas.android.com/apk/res-auto"
3112.     xmlns:tools="http://schemas.android.com/tools"
3113.     android:layout_width="match_parent"
3114.     android:layout_height="match_parent"
3115.     tools:context=".Welcome">
3116.     <TextView
3117.         android:id="@+id/mainword"
3118.         android:layout_width="fill_parent"
3119.         android:layout_height="fill_parent"
3120.         android:gravity="center"
3121.         android:textSize="22dp"
3122.         tools:ignore="MissingConstraints" />
3123. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_margin="5dp"
3124. <?xml version="1.0" encoding="utf-8"?>
3125. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3126.     xmlns:app="http://schemas.android.com/apk/res-auto"
3127.     xmlns:tools="http://schemas.android.com/tools"
3128.     android:layout_width="match_parent"
3129.     android:layout_height="match_parent"
3130.     tools:context=".Welcome">
3131.     <TextView
3132.         android:id="@+id/mainword"
3133.         android:layout_width="fill_parent"
3134.         android:layout_height="fill_parent"
3135.         android:gravity="center"
3136.         android:textSize="22dp"
3137.         tools:ignore="MissingConstraints" />
3138. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3139. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3140.     xmlns:app="http://schemas.android.com/apk/res-auto"
3141.     xmlns:tools="http://schemas.android.com/tools"
3142.     android:layout_width="match_parent"
3143.     android:layout_height="match_parent"
3144.     tools:context=".Welcome">
3145.     <TextView
3146.         android:id="@+id/mainword"
3147.         android:layout_width="fill_parent"
3148.         android:layout_height="fill_parent"
3149.         android:gravity="center"
3150.         android:textSize="22dp"
3151.         tools:ignore="MissingConstraints" />
3152. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3153. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3154.     xmlns:app="http://schemas.android.com/apk/res-auto"
3155.     xmlns:tools="http://schemas.android.com/tools"
3156.     android:layout_width="match_parent"
3157.     android:layout_height="match_parent"
3158.     tools:context=".Welcome">
3159.     <TextView
3160.         android:id="@+id/mainword"
3161.         android:layout_width="fill_parent"
3162.         android:layout_height="fill_parent"
3163.         android:gravity="center"
3164.         android:textSize="22dp"
3165.         tools:ignore="MissingConstraints" />
3166. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3167. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3168.     xmlns:app="http://schemas.android.com/apk/res-auto"
3169.     xmlns:tools="http://schemas.android.com/tools"
3170.     android:layout_width="match_parent"
3171.     android:layout_height="match_parent"
3172.     tools:context=".Welcome">
3173.     <TextView
3174.         android:id="@+id/mainword"
3175.         android:layout_width="fill_parent"
3176.         android:layout_height="fill_parent"
3177.         android:gravity="center"
3178.         android:textSize="22dp"
3179.         tools:ignore="MissingConstraints" />
3180. </androidx.constraintlayout.widget.ConstraintLayout>android:text="注册"
3181. <?xml version="1.0" encoding="utf-8"?>
3182. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3183.     xmlns:app="http://schemas.android.com/apk/res-auto"
3184.     xmlns:tools="http://schemas.android.com/tools"
3185.     android:layout_width="match_parent"
3186.     android:layout_height="match_parent"
3187.     tools:context=".Welcome">
3188.     <TextView
3189.         android:id="@+id/mainword"
3190.         android:layout_width="fill_parent"
3191.         android:layout_height="fill_parent"
3192.         android:gravity="center"
3193.         android:textSize="22dp"
3194.         tools:ignore="MissingConstraints" />
3195. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3196. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3197.     xmlns:app="http://schemas.android.com/apk/res-auto"
3198.     xmlns:tools="http://schemas.android.com/tools"
3199.     android:layout_width="match_parent"
3200.     android:layout_height="match_parent"
3201.     tools:context=".Welcome">
3202.     <TextView
3203.         android:id="@+id/mainword"
3204.         android:layout_width="fill_parent"
3205.         android:layout_height="fill_parent"
3206.         android:gravity="center"
3207.         android:textSize="22dp"
3208.         tools:ignore="MissingConstraints" />
3209. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3210. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3211.     xmlns:app="http://schemas.android.com/apk/res-auto"
3212.     xmlns:tools="http://schemas.android.com/tools"
3213.     android:layout_width="match_parent"
3214.     android:layout_height="match_parent"
3215.     tools:context=".Welcome">
3216.     <TextView
3217.         android:id="@+id/mainword"
3218.         android:layout_width="fill_parent"
3219.         android:layout_height="fill_parent"
3220.         android:gravity="center"
3221.         android:textSize="22dp"
3222.         tools:ignore="MissingConstraints" />
3223. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3224. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3225.     xmlns:app="http://schemas.android.com/apk/res-auto"
3226.     xmlns:tools="http://schemas.android.com/tools"
3227.     android:layout_width="match_parent"
3228.     android:layout_height="match_parent"
3229.     tools:context=".Welcome">
3230.     <TextView
3231.         android:id="@+id/mainword"
3232.         android:layout_width="fill_parent"
3233.         android:layout_height="fill_parent"
3234.         android:gravity="center"
3235.         android:textSize="22dp"
3236.         tools:ignore="MissingConstraints" />
3237. </androidx.constraintlayout.widget.ConstraintLayout>/>
3238. <?xml version="1.0" encoding="utf-8"?>
3239. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3240.     xmlns:app="http://schemas.android.com/apk/res-auto"
3241.     xmlns:tools="http://schemas.android.com/tools"
3242.     android:layout_width="match_parent"
3243.     android:layout_height="match_parent"
3244.     tools:context=".Welcome">
3245.     <TextView
3246.         android:id="@+id/mainword"
3247.         android:layout_width="fill_parent"
3248.         android:layout_height="fill_parent"
3249.         android:gravity="center"
3250.         android:textSize="22dp"
3251.         tools:ignore="MissingConstraints" />
3252. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3253. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3254.     xmlns:app="http://schemas.android.com/apk/res-auto"
3255.     xmlns:tools="http://schemas.android.com/tools"
3256.     android:layout_width="match_parent"
3257.     android:layout_height="match_parent"
3258.     tools:context=".Welcome">
3259.     <TextView
3260.         android:id="@+id/mainword"
3261.         android:layout_width="fill_parent"
3262.         android:layout_height="fill_parent"
3263.         android:gravity="center"
3264.         android:textSize="22dp"
3265.         tools:ignore="MissingConstraints" />
3266. </androidx.constraintlayout.widget.ConstraintLayout></LinearLayout>
3267. <?xml version="1.0" encoding="utf-8"?>
3268. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3269.     xmlns:app="http://schemas.android.com/apk/res-auto"
3270.     xmlns:tools="http://schemas.android.com/tools"
3271.     android:layout_width="match_parent"
3272.     android:layout_height="match_parent"
3273.     tools:context=".Welcome">
3274.     <TextView
3275.         android:id="@+id/mainword"
3276.         android:layout_width="fill_parent"
3277.         android:layout_height="fill_parent"
3278.         android:gravity="center"
3279.         android:textSize="22dp"
3280.         tools:ignore="MissingConstraints" />
3281. </androidx.constraintlayout.widget.ConstraintLayout></LinearLayout>
3284. </androidx.constraintlayout.widget.ConstraintLayout>

复制代码

2.注册界面——Register.java

       注册时，会先对用户名进行比对，若用户名存在则提醒用户名已存在。设置密码会比对两次输入的密码是否相同，不相同则发出提醒。

1. package com.example.test06;
3. import androidx.appcompat.app.AppCompatActivity;
5. import android.content.ContentValues;
6. import android.content.Intent;
7. import android.content.SharedPreferences;
8. import android.database.Cursor;
9. import android.database.sqlite.SQLiteDatabase;
10. import android.os.Bundle;
11. import android.view.View;
12. import android.widget.Button;
13. import android.widget.EditText;
14. import android.widget.Toast;
16. public class Register extends AppCompatActivity {
17. <?xml version="1.0" encoding="utf-8"?>
18. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
19.     xmlns:app="http://schemas.android.com/apk/res-auto"
20.     xmlns:tools="http://schemas.android.com/tools"
21.     android:layout_width="match_parent"
22.     android:layout_height="match_parent"
23.     tools:context=".Welcome">
24.     <TextView
25.         android:id="@+id/mainword"
26.         android:layout_width="fill_parent"
27.         android:layout_height="fill_parent"
28.         android:gravity="center"
29.         android:textSize="22dp"
30.         tools:ignore="MissingConstraints" />
31. </androidx.constraintlayout.widget.ConstraintLayout>EditText usename,usepwd,usepwd2;
32. <?xml version="1.0" encoding="utf-8"?>
33. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
34.     xmlns:app="http://schemas.android.com/apk/res-auto"
35.     xmlns:tools="http://schemas.android.com/tools"
36.     android:layout_width="match_parent"
37.     android:layout_height="match_parent"
38.     tools:context=".Welcome">
39.     <TextView
40.         android:id="@+id/mainword"
41.         android:layout_width="fill_parent"
42.         android:layout_height="fill_parent"
43.         android:gravity="center"
44.         android:textSize="22dp"
45.         tools:ignore="MissingConstraints" />
46. </androidx.constraintlayout.widget.ConstraintLayout>Button submit;
47. <?xml version="1.0" encoding="utf-8"?>
48. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
49.     xmlns:app="http://schemas.android.com/apk/res-auto"
50.     xmlns:tools="http://schemas.android.com/tools"
51.     android:layout_width="match_parent"
52.     android:layout_height="match_parent"
53.     tools:context=".Welcome">
54.     <TextView
55.         android:id="@+id/mainword"
56.         android:layout_width="fill_parent"
57.         android:layout_height="fill_parent"
58.         android:gravity="center"
59.         android:textSize="22dp"
60.         tools:ignore="MissingConstraints" />
61. </androidx.constraintlayout.widget.ConstraintLayout>Mysql mysql;
62. <?xml version="1.0" encoding="utf-8"?>
63. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
64.     xmlns:app="http://schemas.android.com/apk/res-auto"
65.     xmlns:tools="http://schemas.android.com/tools"
66.     android:layout_width="match_parent"
67.     android:layout_height="match_parent"
68.     tools:context=".Welcome">
69.     <TextView
70.         android:id="@+id/mainword"
71.         android:layout_width="fill_parent"
72.         android:layout_height="fill_parent"
73.         android:gravity="center"
74.         android:textSize="22dp"
75.         tools:ignore="MissingConstraints" />
76. </androidx.constraintlayout.widget.ConstraintLayout>SQLiteDatabase db;
77. <?xml version="1.0" encoding="utf-8"?>
78. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
79.     xmlns:app="http://schemas.android.com/apk/res-auto"
80.     xmlns:tools="http://schemas.android.com/tools"
81.     android:layout_width="match_parent"
82.     android:layout_height="match_parent"
83.     tools:context=".Welcome">
84.     <TextView
85.         android:id="@+id/mainword"
86.         android:layout_width="fill_parent"
87.         android:layout_height="fill_parent"
88.         android:gravity="center"
89.         android:textSize="22dp"
90.         tools:ignore="MissingConstraints" />
91. </androidx.constraintlayout.widget.ConstraintLayout>SharedPreferences sp;
92. <?xml version="1.0" encoding="utf-8"?>
93. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
94.     xmlns:app="http://schemas.android.com/apk/res-auto"
95.     xmlns:tools="http://schemas.android.com/tools"
96.     android:layout_width="match_parent"
97.     android:layout_height="match_parent"
98.     tools:context=".Welcome">
99.     <TextView
100.         android:id="@+id/mainword"
101.         android:layout_width="fill_parent"
102.         android:layout_height="fill_parent"
103.         android:gravity="center"
104.         android:textSize="22dp"
105.         tools:ignore="MissingConstraints" />
106. </androidx.constraintlayout.widget.ConstraintLayout>@Override
107. <?xml version="1.0" encoding="utf-8"?>
108. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
109.     xmlns:app="http://schemas.android.com/apk/res-auto"
110.     xmlns:tools="http://schemas.android.com/tools"
111.     android:layout_width="match_parent"
112.     android:layout_height="match_parent"
113.     tools:context=".Welcome">
114.     <TextView
115.         android:id="@+id/mainword"
116.         android:layout_width="fill_parent"
117.         android:layout_height="fill_parent"
118.         android:gravity="center"
119.         android:textSize="22dp"
120.         tools:ignore="MissingConstraints" />
121. </androidx.constraintlayout.widget.ConstraintLayout>protected void onCreate(Bundle savedInstanceState) {
122. <?xml version="1.0" encoding="utf-8"?>
123. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
124.     xmlns:app="http://schemas.android.com/apk/res-auto"
125.     xmlns:tools="http://schemas.android.com/tools"
126.     android:layout_width="match_parent"
127.     android:layout_height="match_parent"
128.     tools:context=".Welcome">
129.     <TextView
130.         android:id="@+id/mainword"
131.         android:layout_width="fill_parent"
132.         android:layout_height="fill_parent"
133.         android:gravity="center"
134.         android:textSize="22dp"
135.         tools:ignore="MissingConstraints" />
136. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
137. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
138.     xmlns:app="http://schemas.android.com/apk/res-auto"
139.     xmlns:tools="http://schemas.android.com/tools"
140.     android:layout_width="match_parent"
141.     android:layout_height="match_parent"
142.     tools:context=".Welcome">
143.     <TextView
144.         android:id="@+id/mainword"
145.         android:layout_width="fill_parent"
146.         android:layout_height="fill_parent"
147.         android:gravity="center"
148.         android:textSize="22dp"
149.         tools:ignore="MissingConstraints" />
150. </androidx.constraintlayout.widget.ConstraintLayout>super.onCreate(savedInstanceState);
151. <?xml version="1.0" encoding="utf-8"?>
152. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
153.     xmlns:app="http://schemas.android.com/apk/res-auto"
154.     xmlns:tools="http://schemas.android.com/tools"
155.     android:layout_width="match_parent"
156.     android:layout_height="match_parent"
157.     tools:context=".Welcome">
158.     <TextView
159.         android:id="@+id/mainword"
160.         android:layout_width="fill_parent"
161.         android:layout_height="fill_parent"
162.         android:gravity="center"
163.         android:textSize="22dp"
164.         tools:ignore="MissingConstraints" />
165. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
166. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
167.     xmlns:app="http://schemas.android.com/apk/res-auto"
168.     xmlns:tools="http://schemas.android.com/tools"
169.     android:layout_width="match_parent"
170.     android:layout_height="match_parent"
171.     tools:context=".Welcome">
172.     <TextView
173.         android:id="@+id/mainword"
174.         android:layout_width="fill_parent"
175.         android:layout_height="fill_parent"
176.         android:gravity="center"
177.         android:textSize="22dp"
178.         tools:ignore="MissingConstraints" />
179. </androidx.constraintlayout.widget.ConstraintLayout>setContentView(R.layout.activity_register);
180. <?xml version="1.0" encoding="utf-8"?>
181. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
182.     xmlns:app="http://schemas.android.com/apk/res-auto"
183.     xmlns:tools="http://schemas.android.com/tools"
184.     android:layout_width="match_parent"
185.     android:layout_height="match_parent"
186.     tools:context=".Welcome">
187.     <TextView
188.         android:id="@+id/mainword"
189.         android:layout_width="fill_parent"
190.         android:layout_height="fill_parent"
191.         android:gravity="center"
192.         android:textSize="22dp"
193.         tools:ignore="MissingConstraints" />
194. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
195. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
196.     xmlns:app="http://schemas.android.com/apk/res-auto"
197.     xmlns:tools="http://schemas.android.com/tools"
198.     android:layout_width="match_parent"
199.     android:layout_height="match_parent"
200.     tools:context=".Welcome">
201.     <TextView
202.         android:id="@+id/mainword"
203.         android:layout_width="fill_parent"
204.         android:layout_height="fill_parent"
205.         android:gravity="center"
206.         android:textSize="22dp"
207.         tools:ignore="MissingConstraints" />
208. </androidx.constraintlayout.widget.ConstraintLayout>usename = this.findViewById(R.id.usename);                        <?xml version="1.0" encoding="utf-8"?>
209. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
210.     xmlns:app="http://schemas.android.com/apk/res-auto"
211.     xmlns:tools="http://schemas.android.com/tools"
212.     android:layout_width="match_parent"
213.     android:layout_height="match_parent"
214.     tools:context=".Welcome">
215.     <TextView
216.         android:id="@+id/mainword"
217.         android:layout_width="fill_parent"
218.         android:layout_height="fill_parent"
219.         android:gravity="center"
220.         android:textSize="22dp"
221.         tools:ignore="MissingConstraints" />
222. </androidx.constraintlayout.widget.ConstraintLayout>//用户名编辑框
223. <?xml version="1.0" encoding="utf-8"?>
224. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
225.     xmlns:app="http://schemas.android.com/apk/res-auto"
226.     xmlns:tools="http://schemas.android.com/tools"
227.     android:layout_width="match_parent"
228.     android:layout_height="match_parent"
229.     tools:context=".Welcome">
230.     <TextView
231.         android:id="@+id/mainword"
232.         android:layout_width="fill_parent"
233.         android:layout_height="fill_parent"
234.         android:gravity="center"
235.         android:textSize="22dp"
236.         tools:ignore="MissingConstraints" />
237. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
238. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
239.     xmlns:app="http://schemas.android.com/apk/res-auto"
240.     xmlns:tools="http://schemas.android.com/tools"
241.     android:layout_width="match_parent"
242.     android:layout_height="match_parent"
243.     tools:context=".Welcome">
244.     <TextView
245.         android:id="@+id/mainword"
246.         android:layout_width="fill_parent"
247.         android:layout_height="fill_parent"
248.         android:gravity="center"
249.         android:textSize="22dp"
250.         tools:ignore="MissingConstraints" />
251. </androidx.constraintlayout.widget.ConstraintLayout>usepwd =  this.findViewById(R.id.usepwd);                                //设置初始密码编辑框
252. <?xml version="1.0" encoding="utf-8"?>
253. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
254.     xmlns:app="http://schemas.android.com/apk/res-auto"
255.     xmlns:tools="http://schemas.android.com/tools"
256.     android:layout_width="match_parent"
257.     android:layout_height="match_parent"
258.     tools:context=".Welcome">
259.     <TextView
260.         android:id="@+id/mainword"
261.         android:layout_width="fill_parent"
262.         android:layout_height="fill_parent"
263.         android:gravity="center"
264.         android:textSize="22dp"
265.         tools:ignore="MissingConstraints" />
266. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
267. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
268.     xmlns:app="http://schemas.android.com/apk/res-auto"
269.     xmlns:tools="http://schemas.android.com/tools"
270.     android:layout_width="match_parent"
271.     android:layout_height="match_parent"
272.     tools:context=".Welcome">
273.     <TextView
274.         android:id="@+id/mainword"
275.         android:layout_width="fill_parent"
276.         android:layout_height="fill_parent"
277.         android:gravity="center"
278.         android:textSize="22dp"
279.         tools:ignore="MissingConstraints" />
280. </androidx.constraintlayout.widget.ConstraintLayout>usepwd2 = this.findViewById(R.id.usepwd2);                        <?xml version="1.0" encoding="utf-8"?>
281. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
282.     xmlns:app="http://schemas.android.com/apk/res-auto"
283.     xmlns:tools="http://schemas.android.com/tools"
284.     android:layout_width="match_parent"
285.     android:layout_height="match_parent"
286.     tools:context=".Welcome">
287.     <TextView
288.         android:id="@+id/mainword"
289.         android:layout_width="fill_parent"
290.         android:layout_height="fill_parent"
291.         android:gravity="center"
292.         android:textSize="22dp"
293.         tools:ignore="MissingConstraints" />
294. </androidx.constraintlayout.widget.ConstraintLayout>//二次输入密码编辑框
295. <?xml version="1.0" encoding="utf-8"?>
296. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
297.     xmlns:app="http://schemas.android.com/apk/res-auto"
298.     xmlns:tools="http://schemas.android.com/tools"
299.     android:layout_width="match_parent"
300.     android:layout_height="match_parent"
301.     tools:context=".Welcome">
302.     <TextView
303.         android:id="@+id/mainword"
304.         android:layout_width="fill_parent"
305.         android:layout_height="fill_parent"
306.         android:gravity="center"
307.         android:textSize="22dp"
308.         tools:ignore="MissingConstraints" />
309. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
310. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
311.     xmlns:app="http://schemas.android.com/apk/res-auto"
312.     xmlns:tools="http://schemas.android.com/tools"
313.     android:layout_width="match_parent"
314.     android:layout_height="match_parent"
315.     tools:context=".Welcome">
316.     <TextView
317.         android:id="@+id/mainword"
318.         android:layout_width="fill_parent"
319.         android:layout_height="fill_parent"
320.         android:gravity="center"
321.         android:textSize="22dp"
322.         tools:ignore="MissingConstraints" />
323. </androidx.constraintlayout.widget.ConstraintLayout>submit =   this.findViewById(R.id.submit);                                //注册按钮
324. <?xml version="1.0" encoding="utf-8"?>
325. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
326.     xmlns:app="http://schemas.android.com/apk/res-auto"
327.     xmlns:tools="http://schemas.android.com/tools"
328.     android:layout_width="match_parent"
329.     android:layout_height="match_parent"
330.     tools:context=".Welcome">
331.     <TextView
332.         android:id="@+id/mainword"
333.         android:layout_width="fill_parent"
334.         android:layout_height="fill_parent"
335.         android:gravity="center"
336.         android:textSize="22dp"
337.         tools:ignore="MissingConstraints" />
338. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
339. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
340.     xmlns:app="http://schemas.android.com/apk/res-auto"
341.     xmlns:tools="http://schemas.android.com/tools"
342.     android:layout_width="match_parent"
343.     android:layout_height="match_parent"
344.     tools:context=".Welcome">
345.     <TextView
346.         android:id="@+id/mainword"
347.         android:layout_width="fill_parent"
348.         android:layout_height="fill_parent"
349.         android:gravity="center"
350.         android:textSize="22dp"
351.         tools:ignore="MissingConstraints" />
352. </androidx.constraintlayout.widget.ConstraintLayout>mysql = new Mysql(this,"Userinfo",null,1);<?xml version="1.0" encoding="utf-8"?>
353. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
354.     xmlns:app="http://schemas.android.com/apk/res-auto"
355.     xmlns:tools="http://schemas.android.com/tools"
356.     android:layout_width="match_parent"
357.     android:layout_height="match_parent"
358.     tools:context=".Welcome">
359.     <TextView
360.         android:id="@+id/mainword"
361.         android:layout_width="fill_parent"
362.         android:layout_height="fill_parent"
363.         android:gravity="center"
364.         android:textSize="22dp"
365.         tools:ignore="MissingConstraints" />
366. </androidx.constraintlayout.widget.ConstraintLayout>  //建数据库
367. <?xml version="1.0" encoding="utf-8"?>
368. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
369.     xmlns:app="http://schemas.android.com/apk/res-auto"
370.     xmlns:tools="http://schemas.android.com/tools"
371.     android:layout_width="match_parent"
372.     android:layout_height="match_parent"
373.     tools:context=".Welcome">
374.     <TextView
375.         android:id="@+id/mainword"
376.         android:layout_width="fill_parent"
377.         android:layout_height="fill_parent"
378.         android:gravity="center"
379.         android:textSize="22dp"
380.         tools:ignore="MissingConstraints" />
381. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
382. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
383.     xmlns:app="http://schemas.android.com/apk/res-auto"
384.     xmlns:tools="http://schemas.android.com/tools"
385.     android:layout_width="match_parent"
386.     android:layout_height="match_parent"
387.     tools:context=".Welcome">
388.     <TextView
389.         android:id="@+id/mainword"
390.         android:layout_width="fill_parent"
391.         android:layout_height="fill_parent"
392.         android:gravity="center"
393.         android:textSize="22dp"
394.         tools:ignore="MissingConstraints" />
395. </androidx.constraintlayout.widget.ConstraintLayout>db = mysql.getReadableDatabase();
396. <?xml version="1.0" encoding="utf-8"?>
397. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
398.     xmlns:app="http://schemas.android.com/apk/res-auto"
399.     xmlns:tools="http://schemas.android.com/tools"
400.     android:layout_width="match_parent"
401.     android:layout_height="match_parent"
402.     tools:context=".Welcome">
403.     <TextView
404.         android:id="@+id/mainword"
405.         android:layout_width="fill_parent"
406.         android:layout_height="fill_parent"
407.         android:gravity="center"
408.         android:textSize="22dp"
409.         tools:ignore="MissingConstraints" />
410. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
411. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
412.     xmlns:app="http://schemas.android.com/apk/res-auto"
413.     xmlns:tools="http://schemas.android.com/tools"
414.     android:layout_width="match_parent"
415.     android:layout_height="match_parent"
416.     tools:context=".Welcome">
417.     <TextView
418.         android:id="@+id/mainword"
419.         android:layout_width="fill_parent"
420.         android:layout_height="fill_parent"
421.         android:gravity="center"
422.         android:textSize="22dp"
423.         tools:ignore="MissingConstraints" />
424. </androidx.constraintlayout.widget.ConstraintLayout>sp = this.getSharedPreferences("useinfo",this.MODE_PRIVATE);
427. <?xml version="1.0" encoding="utf-8"?>
428. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
429.     xmlns:app="http://schemas.android.com/apk/res-auto"
430.     xmlns:tools="http://schemas.android.com/tools"
431.     android:layout_width="match_parent"
432.     android:layout_height="match_parent"
433.     tools:context=".Welcome">
434.     <TextView
435.         android:id="@+id/mainword"
436.         android:layout_width="fill_parent"
437.         android:layout_height="fill_parent"
438.         android:gravity="center"
439.         android:textSize="22dp"
440.         tools:ignore="MissingConstraints" />
441. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
442. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
443.     xmlns:app="http://schemas.android.com/apk/res-auto"
444.     xmlns:tools="http://schemas.android.com/tools"
445.     android:layout_width="match_parent"
446.     android:layout_height="match_parent"
447.     tools:context=".Welcome">
448.     <TextView
449.         android:id="@+id/mainword"
450.         android:layout_width="fill_parent"
451.         android:layout_height="fill_parent"
452.         android:gravity="center"
453.         android:textSize="22dp"
454.         tools:ignore="MissingConstraints" />
455. </androidx.constraintlayout.widget.ConstraintLayout>submit.setOnClickListener(new View.OnClickListener() {
456. <?xml version="1.0" encoding="utf-8"?>
457. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
458.     xmlns:app="http://schemas.android.com/apk/res-auto"
459.     xmlns:tools="http://schemas.android.com/tools"
460.     android:layout_width="match_parent"
461.     android:layout_height="match_parent"
462.     tools:context=".Welcome">
463.     <TextView
464.         android:id="@+id/mainword"
465.         android:layout_width="fill_parent"
466.         android:layout_height="fill_parent"
467.         android:gravity="center"
468.         android:textSize="22dp"
469.         tools:ignore="MissingConstraints" />
470. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
471. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
472.     xmlns:app="http://schemas.android.com/apk/res-auto"
473.     xmlns:tools="http://schemas.android.com/tools"
474.     android:layout_width="match_parent"
475.     android:layout_height="match_parent"
476.     tools:context=".Welcome">
477.     <TextView
478.         android:id="@+id/mainword"
479.         android:layout_width="fill_parent"
480.         android:layout_height="fill_parent"
481.         android:gravity="center"
482.         android:textSize="22dp"
483.         tools:ignore="MissingConstraints" />
484. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
485. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
486.     xmlns:app="http://schemas.android.com/apk/res-auto"
487.     xmlns:tools="http://schemas.android.com/tools"
488.     android:layout_width="match_parent"
489.     android:layout_height="match_parent"
490.     tools:context=".Welcome">
491.     <TextView
492.         android:id="@+id/mainword"
493.         android:layout_width="fill_parent"
494.         android:layout_height="fill_parent"
495.         android:gravity="center"
496.         android:textSize="22dp"
497.         tools:ignore="MissingConstraints" />
498. </androidx.constraintlayout.widget.ConstraintLayout>boolean flag = true;<?xml version="1.0" encoding="utf-8"?>
499. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
500.     xmlns:app="http://schemas.android.com/apk/res-auto"
501.     xmlns:tools="http://schemas.android.com/tools"
502.     android:layout_width="match_parent"
503.     android:layout_height="match_parent"
504.     tools:context=".Welcome">
505.     <TextView
506.         android:id="@+id/mainword"
507.         android:layout_width="fill_parent"
508.         android:layout_height="fill_parent"
509.         android:gravity="center"
510.         android:textSize="22dp"
511.         tools:ignore="MissingConstraints" />
512. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
513. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
514.     xmlns:app="http://schemas.android.com/apk/res-auto"
515.     xmlns:tools="http://schemas.android.com/tools"
516.     android:layout_width="match_parent"
517.     android:layout_height="match_parent"
518.     tools:context=".Welcome">
519.     <TextView
520.         android:id="@+id/mainword"
521.         android:layout_width="fill_parent"
522.         android:layout_height="fill_parent"
523.         android:gravity="center"
524.         android:textSize="22dp"
525.         tools:ignore="MissingConstraints" />
526. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
527. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
528.     xmlns:app="http://schemas.android.com/apk/res-auto"
529.     xmlns:tools="http://schemas.android.com/tools"
530.     android:layout_width="match_parent"
531.     android:layout_height="match_parent"
532.     tools:context=".Welcome">
533.     <TextView
534.         android:id="@+id/mainword"
535.         android:layout_width="fill_parent"
536.         android:layout_height="fill_parent"
537.         android:gravity="center"
538.         android:textSize="22dp"
539.         tools:ignore="MissingConstraints" />
540. </androidx.constraintlayout.widget.ConstraintLayout>//判断用户是否已存在的标志位
541. <?xml version="1.0" encoding="utf-8"?>
542. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
543.     xmlns:app="http://schemas.android.com/apk/res-auto"
544.     xmlns:tools="http://schemas.android.com/tools"
545.     android:layout_width="match_parent"
546.     android:layout_height="match_parent"
547.     tools:context=".Welcome">
548.     <TextView
549.         android:id="@+id/mainword"
550.         android:layout_width="fill_parent"
551.         android:layout_height="fill_parent"
552.         android:gravity="center"
553.         android:textSize="22dp"
554.         tools:ignore="MissingConstraints" />
555. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
556. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
557.     xmlns:app="http://schemas.android.com/apk/res-auto"
558.     xmlns:tools="http://schemas.android.com/tools"
559.     android:layout_width="match_parent"
560.     android:layout_height="match_parent"
561.     tools:context=".Welcome">
562.     <TextView
563.         android:id="@+id/mainword"
564.         android:layout_width="fill_parent"
565.         android:layout_height="fill_parent"
566.         android:gravity="center"
567.         android:textSize="22dp"
568.         tools:ignore="MissingConstraints" />
569. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
570. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
571.     xmlns:app="http://schemas.android.com/apk/res-auto"
572.     xmlns:tools="http://schemas.android.com/tools"
573.     android:layout_width="match_parent"
574.     android:layout_height="match_parent"
575.     tools:context=".Welcome">
576.     <TextView
577.         android:id="@+id/mainword"
578.         android:layout_width="fill_parent"
579.         android:layout_height="fill_parent"
580.         android:gravity="center"
581.         android:textSize="22dp"
582.         tools:ignore="MissingConstraints" />
583. </androidx.constraintlayout.widget.ConstraintLayout>@Override
584. <?xml version="1.0" encoding="utf-8"?>
585. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
586.     xmlns:app="http://schemas.android.com/apk/res-auto"
587.     xmlns:tools="http://schemas.android.com/tools"
588.     android:layout_width="match_parent"
589.     android:layout_height="match_parent"
590.     tools:context=".Welcome">
591.     <TextView
592.         android:id="@+id/mainword"
593.         android:layout_width="fill_parent"
594.         android:layout_height="fill_parent"
595.         android:gravity="center"
596.         android:textSize="22dp"
597.         tools:ignore="MissingConstraints" />
598. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
599. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
600.     xmlns:app="http://schemas.android.com/apk/res-auto"
601.     xmlns:tools="http://schemas.android.com/tools"
602.     android:layout_width="match_parent"
603.     android:layout_height="match_parent"
604.     tools:context=".Welcome">
605.     <TextView
606.         android:id="@+id/mainword"
607.         android:layout_width="fill_parent"
608.         android:layout_height="fill_parent"
609.         android:gravity="center"
610.         android:textSize="22dp"
611.         tools:ignore="MissingConstraints" />
612. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
613. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
614.     xmlns:app="http://schemas.android.com/apk/res-auto"
615.     xmlns:tools="http://schemas.android.com/tools"
616.     android:layout_width="match_parent"
617.     android:layout_height="match_parent"
618.     tools:context=".Welcome">
619.     <TextView
620.         android:id="@+id/mainword"
621.         android:layout_width="fill_parent"
622.         android:layout_height="fill_parent"
623.         android:gravity="center"
624.         android:textSize="22dp"
625.         tools:ignore="MissingConstraints" />
626. </androidx.constraintlayout.widget.ConstraintLayout>public void onClick(View v) {
627. <?xml version="1.0" encoding="utf-8"?>
628. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
629.     xmlns:app="http://schemas.android.com/apk/res-auto"
630.     xmlns:tools="http://schemas.android.com/tools"
631.     android:layout_width="match_parent"
632.     android:layout_height="match_parent"
633.     tools:context=".Welcome">
634.     <TextView
635.         android:id="@+id/mainword"
636.         android:layout_width="fill_parent"
637.         android:layout_height="fill_parent"
638.         android:gravity="center"
639.         android:textSize="22dp"
640.         tools:ignore="MissingConstraints" />
641. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
642. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
643.     xmlns:app="http://schemas.android.com/apk/res-auto"
644.     xmlns:tools="http://schemas.android.com/tools"
645.     android:layout_width="match_parent"
646.     android:layout_height="match_parent"
647.     tools:context=".Welcome">
648.     <TextView
649.         android:id="@+id/mainword"
650.         android:layout_width="fill_parent"
651.         android:layout_height="fill_parent"
652.         android:gravity="center"
653.         android:textSize="22dp"
654.         tools:ignore="MissingConstraints" />
655. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
656. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
657.     xmlns:app="http://schemas.android.com/apk/res-auto"
658.     xmlns:tools="http://schemas.android.com/tools"
659.     android:layout_width="match_parent"
660.     android:layout_height="match_parent"
661.     tools:context=".Welcome">
662.     <TextView
663.         android:id="@+id/mainword"
664.         android:layout_width="fill_parent"
665.         android:layout_height="fill_parent"
666.         android:gravity="center"
667.         android:textSize="22dp"
668.         tools:ignore="MissingConstraints" />
669. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
670. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
671.     xmlns:app="http://schemas.android.com/apk/res-auto"
672.     xmlns:tools="http://schemas.android.com/tools"
673.     android:layout_width="match_parent"
674.     android:layout_height="match_parent"
675.     tools:context=".Welcome">
676.     <TextView
677.         android:id="@+id/mainword"
678.         android:layout_width="fill_parent"
679.         android:layout_height="fill_parent"
680.         android:gravity="center"
681.         android:textSize="22dp"
682.         tools:ignore="MissingConstraints" />
683. </androidx.constraintlayout.widget.ConstraintLayout>String name = usename.getText().toString();                                //用户名
684. <?xml version="1.0" encoding="utf-8"?>
685. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
686.     xmlns:app="http://schemas.android.com/apk/res-auto"
687.     xmlns:tools="http://schemas.android.com/tools"
688.     android:layout_width="match_parent"
689.     android:layout_height="match_parent"
690.     tools:context=".Welcome">
691.     <TextView
692.         android:id="@+id/mainword"
693.         android:layout_width="fill_parent"
694.         android:layout_height="fill_parent"
695.         android:gravity="center"
696.         android:textSize="22dp"
697.         tools:ignore="MissingConstraints" />
698. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
699. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
700.     xmlns:app="http://schemas.android.com/apk/res-auto"
701.     xmlns:tools="http://schemas.android.com/tools"
702.     android:layout_width="match_parent"
703.     android:layout_height="match_parent"
704.     tools:context=".Welcome">
705.     <TextView
706.         android:id="@+id/mainword"
707.         android:layout_width="fill_parent"
708.         android:layout_height="fill_parent"
709.         android:gravity="center"
710.         android:textSize="22dp"
711.         tools:ignore="MissingConstraints" />
712. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
713. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
714.     xmlns:app="http://schemas.android.com/apk/res-auto"
715.     xmlns:tools="http://schemas.android.com/tools"
716.     android:layout_width="match_parent"
717.     android:layout_height="match_parent"
718.     tools:context=".Welcome">
719.     <TextView
720.         android:id="@+id/mainword"
721.         android:layout_width="fill_parent"
722.         android:layout_height="fill_parent"
723.         android:gravity="center"
724.         android:textSize="22dp"
725.         tools:ignore="MissingConstraints" />
726. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
727. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
728.     xmlns:app="http://schemas.android.com/apk/res-auto"
729.     xmlns:tools="http://schemas.android.com/tools"
730.     android:layout_width="match_parent"
731.     android:layout_height="match_parent"
732.     tools:context=".Welcome">
733.     <TextView
734.         android:id="@+id/mainword"
735.         android:layout_width="fill_parent"
736.         android:layout_height="fill_parent"
737.         android:gravity="center"
738.         android:textSize="22dp"
739.         tools:ignore="MissingConstraints" />
740. </androidx.constraintlayout.widget.ConstraintLayout>String pwd01 = usepwd.getText().toString();                                //密码
741. <?xml version="1.0" encoding="utf-8"?>
742. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
743.     xmlns:app="http://schemas.android.com/apk/res-auto"
744.     xmlns:tools="http://schemas.android.com/tools"
745.     android:layout_width="match_parent"
746.     android:layout_height="match_parent"
747.     tools:context=".Welcome">
748.     <TextView
749.         android:id="@+id/mainword"
750.         android:layout_width="fill_parent"
751.         android:layout_height="fill_parent"
752.         android:gravity="center"
753.         android:textSize="22dp"
754.         tools:ignore="MissingConstraints" />
755. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
756. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
757.     xmlns:app="http://schemas.android.com/apk/res-auto"
758.     xmlns:tools="http://schemas.android.com/tools"
759.     android:layout_width="match_parent"
760.     android:layout_height="match_parent"
761.     tools:context=".Welcome">
762.     <TextView
763.         android:id="@+id/mainword"
764.         android:layout_width="fill_parent"
765.         android:layout_height="fill_parent"
766.         android:gravity="center"
767.         android:textSize="22dp"
768.         tools:ignore="MissingConstraints" />
769. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
770. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
771.     xmlns:app="http://schemas.android.com/apk/res-auto"
772.     xmlns:tools="http://schemas.android.com/tools"
773.     android:layout_width="match_parent"
774.     android:layout_height="match_parent"
775.     tools:context=".Welcome">
776.     <TextView
777.         android:id="@+id/mainword"
778.         android:layout_width="fill_parent"
779.         android:layout_height="fill_parent"
780.         android:gravity="center"
781.         android:textSize="22dp"
782.         tools:ignore="MissingConstraints" />
783. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
784. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
785.     xmlns:app="http://schemas.android.com/apk/res-auto"
786.     xmlns:tools="http://schemas.android.com/tools"
787.     android:layout_width="match_parent"
788.     android:layout_height="match_parent"
789.     tools:context=".Welcome">
790.     <TextView
791.         android:id="@+id/mainword"
792.         android:layout_width="fill_parent"
793.         android:layout_height="fill_parent"
794.         android:gravity="center"
795.         android:textSize="22dp"
796.         tools:ignore="MissingConstraints" />
797. </androidx.constraintlayout.widget.ConstraintLayout>String pwd02 = usepwd2.getText().toString();                        //二次输入的密码
798. <?xml version="1.0" encoding="utf-8"?>
799. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
800.     xmlns:app="http://schemas.android.com/apk/res-auto"
801.     xmlns:tools="http://schemas.android.com/tools"
802.     android:layout_width="match_parent"
803.     android:layout_height="match_parent"
804.     tools:context=".Welcome">
805.     <TextView
806.         android:id="@+id/mainword"
807.         android:layout_width="fill_parent"
808.         android:layout_height="fill_parent"
809.         android:gravity="center"
810.         android:textSize="22dp"
811.         tools:ignore="MissingConstraints" />
812. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
813. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
814.     xmlns:app="http://schemas.android.com/apk/res-auto"
815.     xmlns:tools="http://schemas.android.com/tools"
816.     android:layout_width="match_parent"
817.     android:layout_height="match_parent"
818.     tools:context=".Welcome">
819.     <TextView
820.         android:id="@+id/mainword"
821.         android:layout_width="fill_parent"
822.         android:layout_height="fill_parent"
823.         android:gravity="center"
824.         android:textSize="22dp"
825.         tools:ignore="MissingConstraints" />
826. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
827. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
828.     xmlns:app="http://schemas.android.com/apk/res-auto"
829.     xmlns:tools="http://schemas.android.com/tools"
830.     android:layout_width="match_parent"
831.     android:layout_height="match_parent"
832.     tools:context=".Welcome">
833.     <TextView
834.         android:id="@+id/mainword"
835.         android:layout_width="fill_parent"
836.         android:layout_height="fill_parent"
837.         android:gravity="center"
838.         android:textSize="22dp"
839.         tools:ignore="MissingConstraints" />
840. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
841. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
842.     xmlns:app="http://schemas.android.com/apk/res-auto"
843.     xmlns:tools="http://schemas.android.com/tools"
844.     android:layout_width="match_parent"
845.     android:layout_height="match_parent"
846.     tools:context=".Welcome">
847.     <TextView
848.         android:id="@+id/mainword"
849.         android:layout_width="fill_parent"
850.         android:layout_height="fill_parent"
851.         android:gravity="center"
852.         android:textSize="22dp"
853.         tools:ignore="MissingConstraints" />
854. </androidx.constraintlayout.widget.ConstraintLayout>String sex = "";                                                                                //性别
855. <?xml version="1.0" encoding="utf-8"?>
856. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
857.     xmlns:app="http://schemas.android.com/apk/res-auto"
858.     xmlns:tools="http://schemas.android.com/tools"
859.     android:layout_width="match_parent"
860.     android:layout_height="match_parent"
861.     tools:context=".Welcome">
862.     <TextView
863.         android:id="@+id/mainword"
864.         android:layout_width="fill_parent"
865.         android:layout_height="fill_parent"
866.         android:gravity="center"
867.         android:textSize="22dp"
868.         tools:ignore="MissingConstraints" />
869. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
870. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
871.     xmlns:app="http://schemas.android.com/apk/res-auto"
872.     xmlns:tools="http://schemas.android.com/tools"
873.     android:layout_width="match_parent"
874.     android:layout_height="match_parent"
875.     tools:context=".Welcome">
876.     <TextView
877.         android:id="@+id/mainword"
878.         android:layout_width="fill_parent"
879.         android:layout_height="fill_parent"
880.         android:gravity="center"
881.         android:textSize="22dp"
882.         tools:ignore="MissingConstraints" />
883. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
884. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
885.     xmlns:app="http://schemas.android.com/apk/res-auto"
886.     xmlns:tools="http://schemas.android.com/tools"
887.     android:layout_width="match_parent"
888.     android:layout_height="match_parent"
889.     tools:context=".Welcome">
890.     <TextView
891.         android:id="@+id/mainword"
892.         android:layout_width="fill_parent"
893.         android:layout_height="fill_parent"
894.         android:gravity="center"
895.         android:textSize="22dp"
896.         tools:ignore="MissingConstraints" />
897. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
898. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
899.     xmlns:app="http://schemas.android.com/apk/res-auto"
900.     xmlns:tools="http://schemas.android.com/tools"
901.     android:layout_width="match_parent"
902.     android:layout_height="match_parent"
903.     tools:context=".Welcome">
904.     <TextView
905.         android:id="@+id/mainword"
906.         android:layout_width="fill_parent"
907.         android:layout_height="fill_parent"
908.         android:gravity="center"
909.         android:textSize="22dp"
910.         tools:ignore="MissingConstraints" />
911. </androidx.constraintlayout.widget.ConstraintLayout>if(name.equals("")||pwd01 .equals("")||pwd02.equals("")){
912. <?xml version="1.0" encoding="utf-8"?>
913. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
914.     xmlns:app="http://schemas.android.com/apk/res-auto"
915.     xmlns:tools="http://schemas.android.com/tools"
916.     android:layout_width="match_parent"
917.     android:layout_height="match_parent"
918.     tools:context=".Welcome">
919.     <TextView
920.         android:id="@+id/mainword"
921.         android:layout_width="fill_parent"
922.         android:layout_height="fill_parent"
923.         android:gravity="center"
924.         android:textSize="22dp"
925.         tools:ignore="MissingConstraints" />
926. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
927. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
928.     xmlns:app="http://schemas.android.com/apk/res-auto"
929.     xmlns:tools="http://schemas.android.com/tools"
930.     android:layout_width="match_parent"
931.     android:layout_height="match_parent"
932.     tools:context=".Welcome">
933.     <TextView
934.         android:id="@+id/mainword"
935.         android:layout_width="fill_parent"
936.         android:layout_height="fill_parent"
937.         android:gravity="center"
938.         android:textSize="22dp"
939.         tools:ignore="MissingConstraints" />
940. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
941. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
942.     xmlns:app="http://schemas.android.com/apk/res-auto"
943.     xmlns:tools="http://schemas.android.com/tools"
944.     android:layout_width="match_parent"
945.     android:layout_height="match_parent"
946.     tools:context=".Welcome">
947.     <TextView
948.         android:id="@+id/mainword"
949.         android:layout_width="fill_parent"
950.         android:layout_height="fill_parent"
951.         android:gravity="center"
952.         android:textSize="22dp"
953.         tools:ignore="MissingConstraints" />
954. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
955. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
956.     xmlns:app="http://schemas.android.com/apk/res-auto"
957.     xmlns:tools="http://schemas.android.com/tools"
958.     android:layout_width="match_parent"
959.     android:layout_height="match_parent"
960.     tools:context=".Welcome">
961.     <TextView
962.         android:id="@+id/mainword"
963.         android:layout_width="fill_parent"
964.         android:layout_height="fill_parent"
965.         android:gravity="center"
966.         android:textSize="22dp"
967.         tools:ignore="MissingConstraints" />
968. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
969. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
970.     xmlns:app="http://schemas.android.com/apk/res-auto"
971.     xmlns:tools="http://schemas.android.com/tools"
972.     android:layout_width="match_parent"
973.     android:layout_height="match_parent"
974.     tools:context=".Welcome">
975.     <TextView
976.         android:id="@+id/mainword"
977.         android:layout_width="fill_parent"
978.         android:layout_height="fill_parent"
979.         android:gravity="center"
980.         android:textSize="22dp"
981.         tools:ignore="MissingConstraints" />
982. </androidx.constraintlayout.widget.ConstraintLayout>Toast.makeText(Register.this, "用户名或密码不能为空!！", Toast.LENGTH_LONG).show();
983. <?xml version="1.0" encoding="utf-8"?>
984. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
985.     xmlns:app="http://schemas.android.com/apk/res-auto"
986.     xmlns:tools="http://schemas.android.com/tools"
987.     android:layout_width="match_parent"
988.     android:layout_height="match_parent"
989.     tools:context=".Welcome">
990.     <TextView
991.         android:id="@+id/mainword"
992.         android:layout_width="fill_parent"
993.         android:layout_height="fill_parent"
994.         android:gravity="center"
995.         android:textSize="22dp"
996.         tools:ignore="MissingConstraints" />
997. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
998. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
999.     xmlns:app="http://schemas.android.com/apk/res-auto"
1000.     xmlns:tools="http://schemas.android.com/tools"
1001.     android:layout_width="match_parent"
1002.     android:layout_height="match_parent"
1003.     tools:context=".Welcome">
1004.     <TextView
1005.         android:id="@+id/mainword"
1006.         android:layout_width="fill_parent"
1007.         android:layout_height="fill_parent"
1008.         android:gravity="center"
1009.         android:textSize="22dp"
1010.         tools:ignore="MissingConstraints" />
1011. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1012. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1013.     xmlns:app="http://schemas.android.com/apk/res-auto"
1014.     xmlns:tools="http://schemas.android.com/tools"
1015.     android:layout_width="match_parent"
1016.     android:layout_height="match_parent"
1017.     tools:context=".Welcome">
1018.     <TextView
1019.         android:id="@+id/mainword"
1020.         android:layout_width="fill_parent"
1021.         android:layout_height="fill_parent"
1022.         android:gravity="center"
1023.         android:textSize="22dp"
1024.         tools:ignore="MissingConstraints" />
1025. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1026. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1027.     xmlns:app="http://schemas.android.com/apk/res-auto"
1028.     xmlns:tools="http://schemas.android.com/tools"
1029.     android:layout_width="match_parent"
1030.     android:layout_height="match_parent"
1031.     tools:context=".Welcome">
1032.     <TextView
1033.         android:id="@+id/mainword"
1034.         android:layout_width="fill_parent"
1035.         android:layout_height="fill_parent"
1036.         android:gravity="center"
1037.         android:textSize="22dp"
1038.         tools:ignore="MissingConstraints" />
1039. </androidx.constraintlayout.widget.ConstraintLayout>}
1040. <?xml version="1.0" encoding="utf-8"?>
1041. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1042.     xmlns:app="http://schemas.android.com/apk/res-auto"
1043.     xmlns:tools="http://schemas.android.com/tools"
1044.     android:layout_width="match_parent"
1045.     android:layout_height="match_parent"
1046.     tools:context=".Welcome">
1047.     <TextView
1048.         android:id="@+id/mainword"
1049.         android:layout_width="fill_parent"
1050.         android:layout_height="fill_parent"
1051.         android:gravity="center"
1052.         android:textSize="22dp"
1053.         tools:ignore="MissingConstraints" />
1054. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1055. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1056.     xmlns:app="http://schemas.android.com/apk/res-auto"
1057.     xmlns:tools="http://schemas.android.com/tools"
1058.     android:layout_width="match_parent"
1059.     android:layout_height="match_parent"
1060.     tools:context=".Welcome">
1061.     <TextView
1062.         android:id="@+id/mainword"
1063.         android:layout_width="fill_parent"
1064.         android:layout_height="fill_parent"
1065.         android:gravity="center"
1066.         android:textSize="22dp"
1067.         tools:ignore="MissingConstraints" />
1068. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1069. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1070.     xmlns:app="http://schemas.android.com/apk/res-auto"
1071.     xmlns:tools="http://schemas.android.com/tools"
1072.     android:layout_width="match_parent"
1073.     android:layout_height="match_parent"
1074.     tools:context=".Welcome">
1075.     <TextView
1076.         android:id="@+id/mainword"
1077.         android:layout_width="fill_parent"
1078.         android:layout_height="fill_parent"
1079.         android:gravity="center"
1080.         android:textSize="22dp"
1081.         tools:ignore="MissingConstraints" />
1082. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1083. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1084.     xmlns:app="http://schemas.android.com/apk/res-auto"
1085.     xmlns:tools="http://schemas.android.com/tools"
1086.     android:layout_width="match_parent"
1087.     android:layout_height="match_parent"
1088.     tools:context=".Welcome">
1089.     <TextView
1090.         android:id="@+id/mainword"
1091.         android:layout_width="fill_parent"
1092.         android:layout_height="fill_parent"
1093.         android:gravity="center"
1094.         android:textSize="22dp"
1095.         tools:ignore="MissingConstraints" />
1096. </androidx.constraintlayout.widget.ConstraintLayout>else{
1097. <?xml version="1.0" encoding="utf-8"?>
1098. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1099.     xmlns:app="http://schemas.android.com/apk/res-auto"
1100.     xmlns:tools="http://schemas.android.com/tools"
1101.     android:layout_width="match_parent"
1102.     android:layout_height="match_parent"
1103.     tools:context=".Welcome">
1104.     <TextView
1105.         android:id="@+id/mainword"
1106.         android:layout_width="fill_parent"
1107.         android:layout_height="fill_parent"
1108.         android:gravity="center"
1109.         android:textSize="22dp"
1110.         tools:ignore="MissingConstraints" />
1111. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1112. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1113.     xmlns:app="http://schemas.android.com/apk/res-auto"
1114.     xmlns:tools="http://schemas.android.com/tools"
1115.     android:layout_width="match_parent"
1116.     android:layout_height="match_parent"
1117.     tools:context=".Welcome">
1118.     <TextView
1119.         android:id="@+id/mainword"
1120.         android:layout_width="fill_parent"
1121.         android:layout_height="fill_parent"
1122.         android:gravity="center"
1123.         android:textSize="22dp"
1124.         tools:ignore="MissingConstraints" />
1125. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1126. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1127.     xmlns:app="http://schemas.android.com/apk/res-auto"
1128.     xmlns:tools="http://schemas.android.com/tools"
1129.     android:layout_width="match_parent"
1130.     android:layout_height="match_parent"
1131.     tools:context=".Welcome">
1132.     <TextView
1133.         android:id="@+id/mainword"
1134.         android:layout_width="fill_parent"
1135.         android:layout_height="fill_parent"
1136.         android:gravity="center"
1137.         android:textSize="22dp"
1138.         tools:ignore="MissingConstraints" />
1139. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1140. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1141.     xmlns:app="http://schemas.android.com/apk/res-auto"
1142.     xmlns:tools="http://schemas.android.com/tools"
1143.     android:layout_width="match_parent"
1144.     android:layout_height="match_parent"
1145.     tools:context=".Welcome">
1146.     <TextView
1147.         android:id="@+id/mainword"
1148.         android:layout_width="fill_parent"
1149.         android:layout_height="fill_parent"
1150.         android:gravity="center"
1151.         android:textSize="22dp"
1152.         tools:ignore="MissingConstraints" />
1153. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1154. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1155.     xmlns:app="http://schemas.android.com/apk/res-auto"
1156.     xmlns:tools="http://schemas.android.com/tools"
1157.     android:layout_width="match_parent"
1158.     android:layout_height="match_parent"
1159.     tools:context=".Welcome">
1160.     <TextView
1161.         android:id="@+id/mainword"
1162.         android:layout_width="fill_parent"
1163.         android:layout_height="fill_parent"
1164.         android:gravity="center"
1165.         android:textSize="22dp"
1166.         tools:ignore="MissingConstraints" />
1167. </androidx.constraintlayout.widget.ConstraintLayout>Cursor cursor = db.query("logins",new String[]{"usname"},null,null,null,null,null);
1169. <?xml version="1.0" encoding="utf-8"?>
1170. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1171.     xmlns:app="http://schemas.android.com/apk/res-auto"
1172.     xmlns:tools="http://schemas.android.com/tools"
1173.     android:layout_width="match_parent"
1174.     android:layout_height="match_parent"
1175.     tools:context=".Welcome">
1176.     <TextView
1177.         android:id="@+id/mainword"
1178.         android:layout_width="fill_parent"
1179.         android:layout_height="fill_parent"
1180.         android:gravity="center"
1181.         android:textSize="22dp"
1182.         tools:ignore="MissingConstraints" />
1183. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1184. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1185.     xmlns:app="http://schemas.android.com/apk/res-auto"
1186.     xmlns:tools="http://schemas.android.com/tools"
1187.     android:layout_width="match_parent"
1188.     android:layout_height="match_parent"
1189.     tools:context=".Welcome">
1190.     <TextView
1191.         android:id="@+id/mainword"
1192.         android:layout_width="fill_parent"
1193.         android:layout_height="fill_parent"
1194.         android:gravity="center"
1195.         android:textSize="22dp"
1196.         tools:ignore="MissingConstraints" />
1197. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1198. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1199.     xmlns:app="http://schemas.android.com/apk/res-auto"
1200.     xmlns:tools="http://schemas.android.com/tools"
1201.     android:layout_width="match_parent"
1202.     android:layout_height="match_parent"
1203.     tools:context=".Welcome">
1204.     <TextView
1205.         android:id="@+id/mainword"
1206.         android:layout_width="fill_parent"
1207.         android:layout_height="fill_parent"
1208.         android:gravity="center"
1209.         android:textSize="22dp"
1210.         tools:ignore="MissingConstraints" />
1211. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1212. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1213.     xmlns:app="http://schemas.android.com/apk/res-auto"
1214.     xmlns:tools="http://schemas.android.com/tools"
1215.     android:layout_width="match_parent"
1216.     android:layout_height="match_parent"
1217.     tools:context=".Welcome">
1218.     <TextView
1219.         android:id="@+id/mainword"
1220.         android:layout_width="fill_parent"
1221.         android:layout_height="fill_parent"
1222.         android:gravity="center"
1223.         android:textSize="22dp"
1224.         tools:ignore="MissingConstraints" />
1225. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1226. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1227.     xmlns:app="http://schemas.android.com/apk/res-auto"
1228.     xmlns:tools="http://schemas.android.com/tools"
1229.     android:layout_width="match_parent"
1230.     android:layout_height="match_parent"
1231.     tools:context=".Welcome">
1232.     <TextView
1233.         android:id="@+id/mainword"
1234.         android:layout_width="fill_parent"
1235.         android:layout_height="fill_parent"
1236.         android:gravity="center"
1237.         android:textSize="22dp"
1238.         tools:ignore="MissingConstraints" />
1239. </androidx.constraintlayout.widget.ConstraintLayout>while (cursor.moveToNext()){
1240. <?xml version="1.0" encoding="utf-8"?>
1241. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1242.     xmlns:app="http://schemas.android.com/apk/res-auto"
1243.     xmlns:tools="http://schemas.android.com/tools"
1244.     android:layout_width="match_parent"
1245.     android:layout_height="match_parent"
1246.     tools:context=".Welcome">
1247.     <TextView
1248.         android:id="@+id/mainword"
1249.         android:layout_width="fill_parent"
1250.         android:layout_height="fill_parent"
1251.         android:gravity="center"
1252.         android:textSize="22dp"
1253.         tools:ignore="MissingConstraints" />
1254. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1255. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1256.     xmlns:app="http://schemas.android.com/apk/res-auto"
1257.     xmlns:tools="http://schemas.android.com/tools"
1258.     android:layout_width="match_parent"
1259.     android:layout_height="match_parent"
1260.     tools:context=".Welcome">
1261.     <TextView
1262.         android:id="@+id/mainword"
1263.         android:layout_width="fill_parent"
1264.         android:layout_height="fill_parent"
1265.         android:gravity="center"
1266.         android:textSize="22dp"
1267.         tools:ignore="MissingConstraints" />
1268. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1269. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1270.     xmlns:app="http://schemas.android.com/apk/res-auto"
1271.     xmlns:tools="http://schemas.android.com/tools"
1272.     android:layout_width="match_parent"
1273.     android:layout_height="match_parent"
1274.     tools:context=".Welcome">
1275.     <TextView
1276.         android:id="@+id/mainword"
1277.         android:layout_width="fill_parent"
1278.         android:layout_height="fill_parent"
1279.         android:gravity="center"
1280.         android:textSize="22dp"
1281.         tools:ignore="MissingConstraints" />
1282. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1283. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1284.     xmlns:app="http://schemas.android.com/apk/res-auto"
1285.     xmlns:tools="http://schemas.android.com/tools"
1286.     android:layout_width="match_parent"
1287.     android:layout_height="match_parent"
1288.     tools:context=".Welcome">
1289.     <TextView
1290.         android:id="@+id/mainword"
1291.         android:layout_width="fill_parent"
1292.         android:layout_height="fill_parent"
1293.         android:gravity="center"
1294.         android:textSize="22dp"
1295.         tools:ignore="MissingConstraints" />
1296. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1297. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1298.     xmlns:app="http://schemas.android.com/apk/res-auto"
1299.     xmlns:tools="http://schemas.android.com/tools"
1300.     android:layout_width="match_parent"
1301.     android:layout_height="match_parent"
1302.     tools:context=".Welcome">
1303.     <TextView
1304.         android:id="@+id/mainword"
1305.         android:layout_width="fill_parent"
1306.         android:layout_height="fill_parent"
1307.         android:gravity="center"
1308.         android:textSize="22dp"
1309.         tools:ignore="MissingConstraints" />
1310. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1311. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1312.     xmlns:app="http://schemas.android.com/apk/res-auto"
1313.     xmlns:tools="http://schemas.android.com/tools"
1314.     android:layout_width="match_parent"
1315.     android:layout_height="match_parent"
1316.     tools:context=".Welcome">
1317.     <TextView
1318.         android:id="@+id/mainword"
1319.         android:layout_width="fill_parent"
1320.         android:layout_height="fill_parent"
1321.         android:gravity="center"
1322.         android:textSize="22dp"
1323.         tools:ignore="MissingConstraints" />
1324. </androidx.constraintlayout.widget.ConstraintLayout>if(cursor.getString(0).equals(name)){
1325. <?xml version="1.0" encoding="utf-8"?>
1326. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1327.     xmlns:app="http://schemas.android.com/apk/res-auto"
1328.     xmlns:tools="http://schemas.android.com/tools"
1329.     android:layout_width="match_parent"
1330.     android:layout_height="match_parent"
1331.     tools:context=".Welcome">
1332.     <TextView
1333.         android:id="@+id/mainword"
1334.         android:layout_width="fill_parent"
1335.         android:layout_height="fill_parent"
1336.         android:gravity="center"
1337.         android:textSize="22dp"
1338.         tools:ignore="MissingConstraints" />
1339. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1340. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1341.     xmlns:app="http://schemas.android.com/apk/res-auto"
1342.     xmlns:tools="http://schemas.android.com/tools"
1343.     android:layout_width="match_parent"
1344.     android:layout_height="match_parent"
1345.     tools:context=".Welcome">
1346.     <TextView
1347.         android:id="@+id/mainword"
1348.         android:layout_width="fill_parent"
1349.         android:layout_height="fill_parent"
1350.         android:gravity="center"
1351.         android:textSize="22dp"
1352.         tools:ignore="MissingConstraints" />
1353. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1354. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1355.     xmlns:app="http://schemas.android.com/apk/res-auto"
1356.     xmlns:tools="http://schemas.android.com/tools"
1357.     android:layout_width="match_parent"
1358.     android:layout_height="match_parent"
1359.     tools:context=".Welcome">
1360.     <TextView
1361.         android:id="@+id/mainword"
1362.         android:layout_width="fill_parent"
1363.         android:layout_height="fill_parent"
1364.         android:gravity="center"
1365.         android:textSize="22dp"
1366.         tools:ignore="MissingConstraints" />
1367. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1368. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1369.     xmlns:app="http://schemas.android.com/apk/res-auto"
1370.     xmlns:tools="http://schemas.android.com/tools"
1371.     android:layout_width="match_parent"
1372.     android:layout_height="match_parent"
1373.     tools:context=".Welcome">
1374.     <TextView
1375.         android:id="@+id/mainword"
1376.         android:layout_width="fill_parent"
1377.         android:layout_height="fill_parent"
1378.         android:gravity="center"
1379.         android:textSize="22dp"
1380.         tools:ignore="MissingConstraints" />
1381. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1382. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1383.     xmlns:app="http://schemas.android.com/apk/res-auto"
1384.     xmlns:tools="http://schemas.android.com/tools"
1385.     android:layout_width="match_parent"
1386.     android:layout_height="match_parent"
1387.     tools:context=".Welcome">
1388.     <TextView
1389.         android:id="@+id/mainword"
1390.         android:layout_width="fill_parent"
1391.         android:layout_height="fill_parent"
1392.         android:gravity="center"
1393.         android:textSize="22dp"
1394.         tools:ignore="MissingConstraints" />
1395. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1396. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1397.     xmlns:app="http://schemas.android.com/apk/res-auto"
1398.     xmlns:tools="http://schemas.android.com/tools"
1399.     android:layout_width="match_parent"
1400.     android:layout_height="match_parent"
1401.     tools:context=".Welcome">
1402.     <TextView
1403.         android:id="@+id/mainword"
1404.         android:layout_width="fill_parent"
1405.         android:layout_height="fill_parent"
1406.         android:gravity="center"
1407.         android:textSize="22dp"
1408.         tools:ignore="MissingConstraints" />
1409. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1410. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1411.     xmlns:app="http://schemas.android.com/apk/res-auto"
1412.     xmlns:tools="http://schemas.android.com/tools"
1413.     android:layout_width="match_parent"
1414.     android:layout_height="match_parent"
1415.     tools:context=".Welcome">
1416.     <TextView
1417.         android:id="@+id/mainword"
1418.         android:layout_width="fill_parent"
1419.         android:layout_height="fill_parent"
1420.         android:gravity="center"
1421.         android:textSize="22dp"
1422.         tools:ignore="MissingConstraints" />
1423. </androidx.constraintlayout.widget.ConstraintLayout>flag = false;
1424. <?xml version="1.0" encoding="utf-8"?>
1425. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1426.     xmlns:app="http://schemas.android.com/apk/res-auto"
1427.     xmlns:tools="http://schemas.android.com/tools"
1428.     android:layout_width="match_parent"
1429.     android:layout_height="match_parent"
1430.     tools:context=".Welcome">
1431.     <TextView
1432.         android:id="@+id/mainword"
1433.         android:layout_width="fill_parent"
1434.         android:layout_height="fill_parent"
1435.         android:gravity="center"
1436.         android:textSize="22dp"
1437.         tools:ignore="MissingConstraints" />
1438. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1439. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1440.     xmlns:app="http://schemas.android.com/apk/res-auto"
1441.     xmlns:tools="http://schemas.android.com/tools"
1442.     android:layout_width="match_parent"
1443.     android:layout_height="match_parent"
1444.     tools:context=".Welcome">
1445.     <TextView
1446.         android:id="@+id/mainword"
1447.         android:layout_width="fill_parent"
1448.         android:layout_height="fill_parent"
1449.         android:gravity="center"
1450.         android:textSize="22dp"
1451.         tools:ignore="MissingConstraints" />
1452. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1453. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1454.     xmlns:app="http://schemas.android.com/apk/res-auto"
1455.     xmlns:tools="http://schemas.android.com/tools"
1456.     android:layout_width="match_parent"
1457.     android:layout_height="match_parent"
1458.     tools:context=".Welcome">
1459.     <TextView
1460.         android:id="@+id/mainword"
1461.         android:layout_width="fill_parent"
1462.         android:layout_height="fill_parent"
1463.         android:gravity="center"
1464.         android:textSize="22dp"
1465.         tools:ignore="MissingConstraints" />
1466. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1467. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1468.     xmlns:app="http://schemas.android.com/apk/res-auto"
1469.     xmlns:tools="http://schemas.android.com/tools"
1470.     android:layout_width="match_parent"
1471.     android:layout_height="match_parent"
1472.     tools:context=".Welcome">
1473.     <TextView
1474.         android:id="@+id/mainword"
1475.         android:layout_width="fill_parent"
1476.         android:layout_height="fill_parent"
1477.         android:gravity="center"
1478.         android:textSize="22dp"
1479.         tools:ignore="MissingConstraints" />
1480. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1481. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1482.     xmlns:app="http://schemas.android.com/apk/res-auto"
1483.     xmlns:tools="http://schemas.android.com/tools"
1484.     android:layout_width="match_parent"
1485.     android:layout_height="match_parent"
1486.     tools:context=".Welcome">
1487.     <TextView
1488.         android:id="@+id/mainword"
1489.         android:layout_width="fill_parent"
1490.         android:layout_height="fill_parent"
1491.         android:gravity="center"
1492.         android:textSize="22dp"
1493.         tools:ignore="MissingConstraints" />
1494. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1495. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1496.     xmlns:app="http://schemas.android.com/apk/res-auto"
1497.     xmlns:tools="http://schemas.android.com/tools"
1498.     android:layout_width="match_parent"
1499.     android:layout_height="match_parent"
1500.     tools:context=".Welcome">
1501.     <TextView
1502.         android:id="@+id/mainword"
1503.         android:layout_width="fill_parent"
1504.         android:layout_height="fill_parent"
1505.         android:gravity="center"
1506.         android:textSize="22dp"
1507.         tools:ignore="MissingConstraints" />
1508. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1509. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1510.     xmlns:app="http://schemas.android.com/apk/res-auto"
1511.     xmlns:tools="http://schemas.android.com/tools"
1512.     android:layout_width="match_parent"
1513.     android:layout_height="match_parent"
1514.     tools:context=".Welcome">
1515.     <TextView
1516.         android:id="@+id/mainword"
1517.         android:layout_width="fill_parent"
1518.         android:layout_height="fill_parent"
1519.         android:gravity="center"
1520.         android:textSize="22dp"
1521.         tools:ignore="MissingConstraints" />
1522. </androidx.constraintlayout.widget.ConstraintLayout>break;
1523. <?xml version="1.0" encoding="utf-8"?>
1524. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1525.     xmlns:app="http://schemas.android.com/apk/res-auto"
1526.     xmlns:tools="http://schemas.android.com/tools"
1527.     android:layout_width="match_parent"
1528.     android:layout_height="match_parent"
1529.     tools:context=".Welcome">
1530.     <TextView
1531.         android:id="@+id/mainword"
1532.         android:layout_width="fill_parent"
1533.         android:layout_height="fill_parent"
1534.         android:gravity="center"
1535.         android:textSize="22dp"
1536.         tools:ignore="MissingConstraints" />
1537. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1538. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1539.     xmlns:app="http://schemas.android.com/apk/res-auto"
1540.     xmlns:tools="http://schemas.android.com/tools"
1541.     android:layout_width="match_parent"
1542.     android:layout_height="match_parent"
1543.     tools:context=".Welcome">
1544.     <TextView
1545.         android:id="@+id/mainword"
1546.         android:layout_width="fill_parent"
1547.         android:layout_height="fill_parent"
1548.         android:gravity="center"
1549.         android:textSize="22dp"
1550.         tools:ignore="MissingConstraints" />
1551. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1552. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1553.     xmlns:app="http://schemas.android.com/apk/res-auto"
1554.     xmlns:tools="http://schemas.android.com/tools"
1555.     android:layout_width="match_parent"
1556.     android:layout_height="match_parent"
1557.     tools:context=".Welcome">
1558.     <TextView
1559.         android:id="@+id/mainword"
1560.         android:layout_width="fill_parent"
1561.         android:layout_height="fill_parent"
1562.         android:gravity="center"
1563.         android:textSize="22dp"
1564.         tools:ignore="MissingConstraints" />
1565. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1566. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1567.     xmlns:app="http://schemas.android.com/apk/res-auto"
1568.     xmlns:tools="http://schemas.android.com/tools"
1569.     android:layout_width="match_parent"
1570.     android:layout_height="match_parent"
1571.     tools:context=".Welcome">
1572.     <TextView
1573.         android:id="@+id/mainword"
1574.         android:layout_width="fill_parent"
1575.         android:layout_height="fill_parent"
1576.         android:gravity="center"
1577.         android:textSize="22dp"
1578.         tools:ignore="MissingConstraints" />
1579. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1580. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1581.     xmlns:app="http://schemas.android.com/apk/res-auto"
1582.     xmlns:tools="http://schemas.android.com/tools"
1583.     android:layout_width="match_parent"
1584.     android:layout_height="match_parent"
1585.     tools:context=".Welcome">
1586.     <TextView
1587.         android:id="@+id/mainword"
1588.         android:layout_width="fill_parent"
1589.         android:layout_height="fill_parent"
1590.         android:gravity="center"
1591.         android:textSize="22dp"
1592.         tools:ignore="MissingConstraints" />
1593. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1594. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1595.     xmlns:app="http://schemas.android.com/apk/res-auto"
1596.     xmlns:tools="http://schemas.android.com/tools"
1597.     android:layout_width="match_parent"
1598.     android:layout_height="match_parent"
1599.     tools:context=".Welcome">
1600.     <TextView
1601.         android:id="@+id/mainword"
1602.         android:layout_width="fill_parent"
1603.         android:layout_height="fill_parent"
1604.         android:gravity="center"
1605.         android:textSize="22dp"
1606.         tools:ignore="MissingConstraints" />
1607. </androidx.constraintlayout.widget.ConstraintLayout>}
1608. <?xml version="1.0" encoding="utf-8"?>
1609. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1610.     xmlns:app="http://schemas.android.com/apk/res-auto"
1611.     xmlns:tools="http://schemas.android.com/tools"
1612.     android:layout_width="match_parent"
1613.     android:layout_height="match_parent"
1614.     tools:context=".Welcome">
1615.     <TextView
1616.         android:id="@+id/mainword"
1617.         android:layout_width="fill_parent"
1618.         android:layout_height="fill_parent"
1619.         android:gravity="center"
1620.         android:textSize="22dp"
1621.         tools:ignore="MissingConstraints" />
1622. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1623. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1624.     xmlns:app="http://schemas.android.com/apk/res-auto"
1625.     xmlns:tools="http://schemas.android.com/tools"
1626.     android:layout_width="match_parent"
1627.     android:layout_height="match_parent"
1628.     tools:context=".Welcome">
1629.     <TextView
1630.         android:id="@+id/mainword"
1631.         android:layout_width="fill_parent"
1632.         android:layout_height="fill_parent"
1633.         android:gravity="center"
1634.         android:textSize="22dp"
1635.         tools:ignore="MissingConstraints" />
1636. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1637. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1638.     xmlns:app="http://schemas.android.com/apk/res-auto"
1639.     xmlns:tools="http://schemas.android.com/tools"
1640.     android:layout_width="match_parent"
1641.     android:layout_height="match_parent"
1642.     tools:context=".Welcome">
1643.     <TextView
1644.         android:id="@+id/mainword"
1645.         android:layout_width="fill_parent"
1646.         android:layout_height="fill_parent"
1647.         android:gravity="center"
1648.         android:textSize="22dp"
1649.         tools:ignore="MissingConstraints" />
1650. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1651. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1652.     xmlns:app="http://schemas.android.com/apk/res-auto"
1653.     xmlns:tools="http://schemas.android.com/tools"
1654.     android:layout_width="match_parent"
1655.     android:layout_height="match_parent"
1656.     tools:context=".Welcome">
1657.     <TextView
1658.         android:id="@+id/mainword"
1659.         android:layout_width="fill_parent"
1660.         android:layout_height="fill_parent"
1661.         android:gravity="center"
1662.         android:textSize="22dp"
1663.         tools:ignore="MissingConstraints" />
1664. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1665. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1666.     xmlns:app="http://schemas.android.com/apk/res-auto"
1667.     xmlns:tools="http://schemas.android.com/tools"
1668.     android:layout_width="match_parent"
1669.     android:layout_height="match_parent"
1670.     tools:context=".Welcome">
1671.     <TextView
1672.         android:id="@+id/mainword"
1673.         android:layout_width="fill_parent"
1674.         android:layout_height="fill_parent"
1675.         android:gravity="center"
1676.         android:textSize="22dp"
1677.         tools:ignore="MissingConstraints" />
1678. </androidx.constraintlayout.widget.ConstraintLayout>}
1679. <?xml version="1.0" encoding="utf-8"?>
1680. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1681.     xmlns:app="http://schemas.android.com/apk/res-auto"
1682.     xmlns:tools="http://schemas.android.com/tools"
1683.     android:layout_width="match_parent"
1684.     android:layout_height="match_parent"
1685.     tools:context=".Welcome">
1686.     <TextView
1687.         android:id="@+id/mainword"
1688.         android:layout_width="fill_parent"
1689.         android:layout_height="fill_parent"
1690.         android:gravity="center"
1691.         android:textSize="22dp"
1692.         tools:ignore="MissingConstraints" />
1693. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1694. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1695.     xmlns:app="http://schemas.android.com/apk/res-auto"
1696.     xmlns:tools="http://schemas.android.com/tools"
1697.     android:layout_width="match_parent"
1698.     android:layout_height="match_parent"
1699.     tools:context=".Welcome">
1700.     <TextView
1701.         android:id="@+id/mainword"
1702.         android:layout_width="fill_parent"
1703.         android:layout_height="fill_parent"
1704.         android:gravity="center"
1705.         android:textSize="22dp"
1706.         tools:ignore="MissingConstraints" />
1707. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1708. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1709.     xmlns:app="http://schemas.android.com/apk/res-auto"
1710.     xmlns:tools="http://schemas.android.com/tools"
1711.     android:layout_width="match_parent"
1712.     android:layout_height="match_parent"
1713.     tools:context=".Welcome">
1714.     <TextView
1715.         android:id="@+id/mainword"
1716.         android:layout_width="fill_parent"
1717.         android:layout_height="fill_parent"
1718.         android:gravity="center"
1719.         android:textSize="22dp"
1720.         tools:ignore="MissingConstraints" />
1721. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1722. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1723.     xmlns:app="http://schemas.android.com/apk/res-auto"
1724.     xmlns:tools="http://schemas.android.com/tools"
1725.     android:layout_width="match_parent"
1726.     android:layout_height="match_parent"
1727.     tools:context=".Welcome">
1728.     <TextView
1729.         android:id="@+id/mainword"
1730.         android:layout_width="fill_parent"
1731.         android:layout_height="fill_parent"
1732.         android:gravity="center"
1733.         android:textSize="22dp"
1734.         tools:ignore="MissingConstraints" />
1735. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1736. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1737.     xmlns:app="http://schemas.android.com/apk/res-auto"
1738.     xmlns:tools="http://schemas.android.com/tools"
1739.     android:layout_width="match_parent"
1740.     android:layout_height="match_parent"
1741.     tools:context=".Welcome">
1742.     <TextView
1743.         android:id="@+id/mainword"
1744.         android:layout_width="fill_parent"
1745.         android:layout_height="fill_parent"
1746.         android:gravity="center"
1747.         android:textSize="22dp"
1748.         tools:ignore="MissingConstraints" />
1749. </androidx.constraintlayout.widget.ConstraintLayout>if(flag==true){<?xml version="1.0" encoding="utf-8"?>
1750. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1751.     xmlns:app="http://schemas.android.com/apk/res-auto"
1752.     xmlns:tools="http://schemas.android.com/tools"
1753.     android:layout_width="match_parent"
1754.     android:layout_height="match_parent"
1755.     tools:context=".Welcome">
1756.     <TextView
1757.         android:id="@+id/mainword"
1758.         android:layout_width="fill_parent"
1759.         android:layout_height="fill_parent"
1760.         android:gravity="center"
1761.         android:textSize="22dp"
1762.         tools:ignore="MissingConstraints" />
1763. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1764. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1765.     xmlns:app="http://schemas.android.com/apk/res-auto"
1766.     xmlns:tools="http://schemas.android.com/tools"
1767.     android:layout_width="match_parent"
1768.     android:layout_height="match_parent"
1769.     tools:context=".Welcome">
1770.     <TextView
1771.         android:id="@+id/mainword"
1772.         android:layout_width="fill_parent"
1773.         android:layout_height="fill_parent"
1774.         android:gravity="center"
1775.         android:textSize="22dp"
1776.         tools:ignore="MissingConstraints" />
1777. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1778. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1779.     xmlns:app="http://schemas.android.com/apk/res-auto"
1780.     xmlns:tools="http://schemas.android.com/tools"
1781.     android:layout_width="match_parent"
1782.     android:layout_height="match_parent"
1783.     tools:context=".Welcome">
1784.     <TextView
1785.         android:id="@+id/mainword"
1786.         android:layout_width="fill_parent"
1787.         android:layout_height="fill_parent"
1788.         android:gravity="center"
1789.         android:textSize="22dp"
1790.         tools:ignore="MissingConstraints" />
1791. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1792. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1793.     xmlns:app="http://schemas.android.com/apk/res-auto"
1794.     xmlns:tools="http://schemas.android.com/tools"
1795.     android:layout_width="match_parent"
1796.     android:layout_height="match_parent"
1797.     tools:context=".Welcome">
1798.     <TextView
1799.         android:id="@+id/mainword"
1800.         android:layout_width="fill_parent"
1801.         android:layout_height="fill_parent"
1802.         android:gravity="center"
1803.         android:textSize="22dp"
1804.         tools:ignore="MissingConstraints" />
1805. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1806. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1807.     xmlns:app="http://schemas.android.com/apk/res-auto"
1808.     xmlns:tools="http://schemas.android.com/tools"
1809.     android:layout_width="match_parent"
1810.     android:layout_height="match_parent"
1811.     tools:context=".Welcome">
1812.     <TextView
1813.         android:id="@+id/mainword"
1814.         android:layout_width="fill_parent"
1815.         android:layout_height="fill_parent"
1816.         android:gravity="center"
1817.         android:textSize="22dp"
1818.         tools:ignore="MissingConstraints" />
1819. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1820. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1821.     xmlns:app="http://schemas.android.com/apk/res-auto"
1822.     xmlns:tools="http://schemas.android.com/tools"
1823.     android:layout_width="match_parent"
1824.     android:layout_height="match_parent"
1825.     tools:context=".Welcome">
1826.     <TextView
1827.         android:id="@+id/mainword"
1828.         android:layout_width="fill_parent"
1829.         android:layout_height="fill_parent"
1830.         android:gravity="center"
1831.         android:textSize="22dp"
1832.         tools:ignore="MissingConstraints" />
1833. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1834. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1835.     xmlns:app="http://schemas.android.com/apk/res-auto"
1836.     xmlns:tools="http://schemas.android.com/tools"
1837.     android:layout_width="match_parent"
1838.     android:layout_height="match_parent"
1839.     tools:context=".Welcome">
1840.     <TextView
1841.         android:id="@+id/mainword"
1842.         android:layout_width="fill_parent"
1843.         android:layout_height="fill_parent"
1844.         android:gravity="center"
1845.         android:textSize="22dp"
1846.         tools:ignore="MissingConstraints" />
1847. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1848. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1849.     xmlns:app="http://schemas.android.com/apk/res-auto"
1850.     xmlns:tools="http://schemas.android.com/tools"
1851.     android:layout_width="match_parent"
1852.     android:layout_height="match_parent"
1853.     tools:context=".Welcome">
1854.     <TextView
1855.         android:id="@+id/mainword"
1856.         android:layout_width="fill_parent"
1857.         android:layout_height="fill_parent"
1858.         android:gravity="center"
1859.         android:textSize="22dp"
1860.         tools:ignore="MissingConstraints" />
1861. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1862. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1863.     xmlns:app="http://schemas.android.com/apk/res-auto"
1864.     xmlns:tools="http://schemas.android.com/tools"
1865.     android:layout_width="match_parent"
1866.     android:layout_height="match_parent"
1867.     tools:context=".Welcome">
1868.     <TextView
1869.         android:id="@+id/mainword"
1870.         android:layout_width="fill_parent"
1871.         android:layout_height="fill_parent"
1872.         android:gravity="center"
1873.         android:textSize="22dp"
1874.         tools:ignore="MissingConstraints" />
1875. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1876. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1877.     xmlns:app="http://schemas.android.com/apk/res-auto"
1878.     xmlns:tools="http://schemas.android.com/tools"
1879.     android:layout_width="match_parent"
1880.     android:layout_height="match_parent"
1881.     tools:context=".Welcome">
1882.     <TextView
1883.         android:id="@+id/mainword"
1884.         android:layout_width="fill_parent"
1885.         android:layout_height="fill_parent"
1886.         android:gravity="center"
1887.         android:textSize="22dp"
1888.         tools:ignore="MissingConstraints" />
1889. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1890. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1891.     xmlns:app="http://schemas.android.com/apk/res-auto"
1892.     xmlns:tools="http://schemas.android.com/tools"
1893.     android:layout_width="match_parent"
1894.     android:layout_height="match_parent"
1895.     tools:context=".Welcome">
1896.     <TextView
1897.         android:id="@+id/mainword"
1898.         android:layout_width="fill_parent"
1899.         android:layout_height="fill_parent"
1900.         android:gravity="center"
1901.         android:textSize="22dp"
1902.         tools:ignore="MissingConstraints" />
1903. </androidx.constraintlayout.widget.ConstraintLayout> //判断用户是否已存在
1904. <?xml version="1.0" encoding="utf-8"?>
1905. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1906.     xmlns:app="http://schemas.android.com/apk/res-auto"
1907.     xmlns:tools="http://schemas.android.com/tools"
1908.     android:layout_width="match_parent"
1909.     android:layout_height="match_parent"
1910.     tools:context=".Welcome">
1911.     <TextView
1912.         android:id="@+id/mainword"
1913.         android:layout_width="fill_parent"
1914.         android:layout_height="fill_parent"
1915.         android:gravity="center"
1916.         android:textSize="22dp"
1917.         tools:ignore="MissingConstraints" />
1918. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1919. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1920.     xmlns:app="http://schemas.android.com/apk/res-auto"
1921.     xmlns:tools="http://schemas.android.com/tools"
1922.     android:layout_width="match_parent"
1923.     android:layout_height="match_parent"
1924.     tools:context=".Welcome">
1925.     <TextView
1926.         android:id="@+id/mainword"
1927.         android:layout_width="fill_parent"
1928.         android:layout_height="fill_parent"
1929.         android:gravity="center"
1930.         android:textSize="22dp"
1931.         tools:ignore="MissingConstraints" />
1932. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1933. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1934.     xmlns:app="http://schemas.android.com/apk/res-auto"
1935.     xmlns:tools="http://schemas.android.com/tools"
1936.     android:layout_width="match_parent"
1937.     android:layout_height="match_parent"
1938.     tools:context=".Welcome">
1939.     <TextView
1940.         android:id="@+id/mainword"
1941.         android:layout_width="fill_parent"
1942.         android:layout_height="fill_parent"
1943.         android:gravity="center"
1944.         android:textSize="22dp"
1945.         tools:ignore="MissingConstraints" />
1946. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1947. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1948.     xmlns:app="http://schemas.android.com/apk/res-auto"
1949.     xmlns:tools="http://schemas.android.com/tools"
1950.     android:layout_width="match_parent"
1951.     android:layout_height="match_parent"
1952.     tools:context=".Welcome">
1953.     <TextView
1954.         android:id="@+id/mainword"
1955.         android:layout_width="fill_parent"
1956.         android:layout_height="fill_parent"
1957.         android:gravity="center"
1958.         android:textSize="22dp"
1959.         tools:ignore="MissingConstraints" />
1960. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1961. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1962.     xmlns:app="http://schemas.android.com/apk/res-auto"
1963.     xmlns:tools="http://schemas.android.com/tools"
1964.     android:layout_width="match_parent"
1965.     android:layout_height="match_parent"
1966.     tools:context=".Welcome">
1967.     <TextView
1968.         android:id="@+id/mainword"
1969.         android:layout_width="fill_parent"
1970.         android:layout_height="fill_parent"
1971.         android:gravity="center"
1972.         android:textSize="22dp"
1973.         tools:ignore="MissingConstraints" />
1974. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1975. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1976.     xmlns:app="http://schemas.android.com/apk/res-auto"
1977.     xmlns:tools="http://schemas.android.com/tools"
1978.     android:layout_width="match_parent"
1979.     android:layout_height="match_parent"
1980.     tools:context=".Welcome">
1981.     <TextView
1982.         android:id="@+id/mainword"
1983.         android:layout_width="fill_parent"
1984.         android:layout_height="fill_parent"
1985.         android:gravity="center"
1986.         android:textSize="22dp"
1987.         tools:ignore="MissingConstraints" />
1988. </androidx.constraintlayout.widget.ConstraintLayout>if (pwd01.equals(pwd02)) {                                                                //判断两次输入的密码是否一致，若一致则继续，不一致则提醒密码不一致
1989. <?xml version="1.0" encoding="utf-8"?>
1990. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1991.     xmlns:app="http://schemas.android.com/apk/res-auto"
1992.     xmlns:tools="http://schemas.android.com/tools"
1993.     android:layout_width="match_parent"
1994.     android:layout_height="match_parent"
1995.     tools:context=".Welcome">
1996.     <TextView
1997.         android:id="@+id/mainword"
1998.         android:layout_width="fill_parent"
1999.         android:layout_height="fill_parent"
2000.         android:gravity="center"
2001.         android:textSize="22dp"
2002.         tools:ignore="MissingConstraints" />
2003. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2004. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2005.     xmlns:app="http://schemas.android.com/apk/res-auto"
2006.     xmlns:tools="http://schemas.android.com/tools"
2007.     android:layout_width="match_parent"
2008.     android:layout_height="match_parent"
2009.     tools:context=".Welcome">
2010.     <TextView
2011.         android:id="@+id/mainword"
2012.         android:layout_width="fill_parent"
2013.         android:layout_height="fill_parent"
2014.         android:gravity="center"
2015.         android:textSize="22dp"
2016.         tools:ignore="MissingConstraints" />
2017. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2018. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2019.     xmlns:app="http://schemas.android.com/apk/res-auto"
2020.     xmlns:tools="http://schemas.android.com/tools"
2021.     android:layout_width="match_parent"
2022.     android:layout_height="match_parent"
2023.     tools:context=".Welcome">
2024.     <TextView
2025.         android:id="@+id/mainword"
2026.         android:layout_width="fill_parent"
2027.         android:layout_height="fill_parent"
2028.         android:gravity="center"
2029.         android:textSize="22dp"
2030.         tools:ignore="MissingConstraints" />
2031. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2032. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2033.     xmlns:app="http://schemas.android.com/apk/res-auto"
2034.     xmlns:tools="http://schemas.android.com/tools"
2035.     android:layout_width="match_parent"
2036.     android:layout_height="match_parent"
2037.     tools:context=".Welcome">
2038.     <TextView
2039.         android:id="@+id/mainword"
2040.         android:layout_width="fill_parent"
2041.         android:layout_height="fill_parent"
2042.         android:gravity="center"
2043.         android:textSize="22dp"
2044.         tools:ignore="MissingConstraints" />
2045. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2046. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2047.     xmlns:app="http://schemas.android.com/apk/res-auto"
2048.     xmlns:tools="http://schemas.android.com/tools"
2049.     android:layout_width="match_parent"
2050.     android:layout_height="match_parent"
2051.     tools:context=".Welcome">
2052.     <TextView
2053.         android:id="@+id/mainword"
2054.         android:layout_width="fill_parent"
2055.         android:layout_height="fill_parent"
2056.         android:gravity="center"
2057.         android:textSize="22dp"
2058.         tools:ignore="MissingConstraints" />
2059. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2060. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2061.     xmlns:app="http://schemas.android.com/apk/res-auto"
2062.     xmlns:tools="http://schemas.android.com/tools"
2063.     android:layout_width="match_parent"
2064.     android:layout_height="match_parent"
2065.     tools:context=".Welcome">
2066.     <TextView
2067.         android:id="@+id/mainword"
2068.         android:layout_width="fill_parent"
2069.         android:layout_height="fill_parent"
2070.         android:gravity="center"
2071.         android:textSize="22dp"
2072.         tools:ignore="MissingConstraints" />
2073. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2074. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2075.     xmlns:app="http://schemas.android.com/apk/res-auto"
2076.     xmlns:tools="http://schemas.android.com/tools"
2077.     android:layout_width="match_parent"
2078.     android:layout_height="match_parent"
2079.     tools:context=".Welcome">
2080.     <TextView
2081.         android:id="@+id/mainword"
2082.         android:layout_width="fill_parent"
2083.         android:layout_height="fill_parent"
2084.         android:gravity="center"
2085.         android:textSize="22dp"
2086.         tools:ignore="MissingConstraints" />
2087. </androidx.constraintlayout.widget.ConstraintLayout>ContentValues cv = new ContentValues();
2088. <?xml version="1.0" encoding="utf-8"?>
2089. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2090.     xmlns:app="http://schemas.android.com/apk/res-auto"
2091.     xmlns:tools="http://schemas.android.com/tools"
2092.     android:layout_width="match_parent"
2093.     android:layout_height="match_parent"
2094.     tools:context=".Welcome">
2095.     <TextView
2096.         android:id="@+id/mainword"
2097.         android:layout_width="fill_parent"
2098.         android:layout_height="fill_parent"
2099.         android:gravity="center"
2100.         android:textSize="22dp"
2101.         tools:ignore="MissingConstraints" />
2102. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2103. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2104.     xmlns:app="http://schemas.android.com/apk/res-auto"
2105.     xmlns:tools="http://schemas.android.com/tools"
2106.     android:layout_width="match_parent"
2107.     android:layout_height="match_parent"
2108.     tools:context=".Welcome">
2109.     <TextView
2110.         android:id="@+id/mainword"
2111.         android:layout_width="fill_parent"
2112.         android:layout_height="fill_parent"
2113.         android:gravity="center"
2114.         android:textSize="22dp"
2115.         tools:ignore="MissingConstraints" />
2116. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2117. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2118.     xmlns:app="http://schemas.android.com/apk/res-auto"
2119.     xmlns:tools="http://schemas.android.com/tools"
2120.     android:layout_width="match_parent"
2121.     android:layout_height="match_parent"
2122.     tools:context=".Welcome">
2123.     <TextView
2124.         android:id="@+id/mainword"
2125.         android:layout_width="fill_parent"
2126.         android:layout_height="fill_parent"
2127.         android:gravity="center"
2128.         android:textSize="22dp"
2129.         tools:ignore="MissingConstraints" />
2130. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2131. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2132.     xmlns:app="http://schemas.android.com/apk/res-auto"
2133.     xmlns:tools="http://schemas.android.com/tools"
2134.     android:layout_width="match_parent"
2135.     android:layout_height="match_parent"
2136.     tools:context=".Welcome">
2137.     <TextView
2138.         android:id="@+id/mainword"
2139.         android:layout_width="fill_parent"
2140.         android:layout_height="fill_parent"
2141.         android:gravity="center"
2142.         android:textSize="22dp"
2143.         tools:ignore="MissingConstraints" />
2144. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2145. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2146.     xmlns:app="http://schemas.android.com/apk/res-auto"
2147.     xmlns:tools="http://schemas.android.com/tools"
2148.     android:layout_width="match_parent"
2149.     android:layout_height="match_parent"
2150.     tools:context=".Welcome">
2151.     <TextView
2152.         android:id="@+id/mainword"
2153.         android:layout_width="fill_parent"
2154.         android:layout_height="fill_parent"
2155.         android:gravity="center"
2156.         android:textSize="22dp"
2157.         tools:ignore="MissingConstraints" />
2158. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2159. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2160.     xmlns:app="http://schemas.android.com/apk/res-auto"
2161.     xmlns:tools="http://schemas.android.com/tools"
2162.     android:layout_width="match_parent"
2163.     android:layout_height="match_parent"
2164.     tools:context=".Welcome">
2165.     <TextView
2166.         android:id="@+id/mainword"
2167.         android:layout_width="fill_parent"
2168.         android:layout_height="fill_parent"
2169.         android:gravity="center"
2170.         android:textSize="22dp"
2171.         tools:ignore="MissingConstraints" />
2172. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2173. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2174.     xmlns:app="http://schemas.android.com/apk/res-auto"
2175.     xmlns:tools="http://schemas.android.com/tools"
2176.     android:layout_width="match_parent"
2177.     android:layout_height="match_parent"
2178.     tools:context=".Welcome">
2179.     <TextView
2180.         android:id="@+id/mainword"
2181.         android:layout_width="fill_parent"
2182.         android:layout_height="fill_parent"
2183.         android:gravity="center"
2184.         android:textSize="22dp"
2185.         tools:ignore="MissingConstraints" />
2186. </androidx.constraintlayout.widget.ConstraintLayout>cv.put("usname",name);
2187. <?xml version="1.0" encoding="utf-8"?>
2188. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2189.     xmlns:app="http://schemas.android.com/apk/res-auto"
2190.     xmlns:tools="http://schemas.android.com/tools"
2191.     android:layout_width="match_parent"
2192.     android:layout_height="match_parent"
2193.     tools:context=".Welcome">
2194.     <TextView
2195.         android:id="@+id/mainword"
2196.         android:layout_width="fill_parent"
2197.         android:layout_height="fill_parent"
2198.         android:gravity="center"
2199.         android:textSize="22dp"
2200.         tools:ignore="MissingConstraints" />
2201. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2202. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2203.     xmlns:app="http://schemas.android.com/apk/res-auto"
2204.     xmlns:tools="http://schemas.android.com/tools"
2205.     android:layout_width="match_parent"
2206.     android:layout_height="match_parent"
2207.     tools:context=".Welcome">
2208.     <TextView
2209.         android:id="@+id/mainword"
2210.         android:layout_width="fill_parent"
2211.         android:layout_height="fill_parent"
2212.         android:gravity="center"
2213.         android:textSize="22dp"
2214.         tools:ignore="MissingConstraints" />
2215. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2216. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2217.     xmlns:app="http://schemas.android.com/apk/res-auto"
2218.     xmlns:tools="http://schemas.android.com/tools"
2219.     android:layout_width="match_parent"
2220.     android:layout_height="match_parent"
2221.     tools:context=".Welcome">
2222.     <TextView
2223.         android:id="@+id/mainword"
2224.         android:layout_width="fill_parent"
2225.         android:layout_height="fill_parent"
2226.         android:gravity="center"
2227.         android:textSize="22dp"
2228.         tools:ignore="MissingConstraints" />
2229. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2230. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2231.     xmlns:app="http://schemas.android.com/apk/res-auto"
2232.     xmlns:tools="http://schemas.android.com/tools"
2233.     android:layout_width="match_parent"
2234.     android:layout_height="match_parent"
2235.     tools:context=".Welcome">
2236.     <TextView
2237.         android:id="@+id/mainword"
2238.         android:layout_width="fill_parent"
2239.         android:layout_height="fill_parent"
2240.         android:gravity="center"
2241.         android:textSize="22dp"
2242.         tools:ignore="MissingConstraints" />
2243. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2244. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2245.     xmlns:app="http://schemas.android.com/apk/res-auto"
2246.     xmlns:tools="http://schemas.android.com/tools"
2247.     android:layout_width="match_parent"
2248.     android:layout_height="match_parent"
2249.     tools:context=".Welcome">
2250.     <TextView
2251.         android:id="@+id/mainword"
2252.         android:layout_width="fill_parent"
2253.         android:layout_height="fill_parent"
2254.         android:gravity="center"
2255.         android:textSize="22dp"
2256.         tools:ignore="MissingConstraints" />
2257. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2258. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2259.     xmlns:app="http://schemas.android.com/apk/res-auto"
2260.     xmlns:tools="http://schemas.android.com/tools"
2261.     android:layout_width="match_parent"
2262.     android:layout_height="match_parent"
2263.     tools:context=".Welcome">
2264.     <TextView
2265.         android:id="@+id/mainword"
2266.         android:layout_width="fill_parent"
2267.         android:layout_height="fill_parent"
2268.         android:gravity="center"
2269.         android:textSize="22dp"
2270.         tools:ignore="MissingConstraints" />
2271. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2272. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2273.     xmlns:app="http://schemas.android.com/apk/res-auto"
2274.     xmlns:tools="http://schemas.android.com/tools"
2275.     android:layout_width="match_parent"
2276.     android:layout_height="match_parent"
2277.     tools:context=".Welcome">
2278.     <TextView
2279.         android:id="@+id/mainword"
2280.         android:layout_width="fill_parent"
2281.         android:layout_height="fill_parent"
2282.         android:gravity="center"
2283.         android:textSize="22dp"
2284.         tools:ignore="MissingConstraints" />
2285. </androidx.constraintlayout.widget.ConstraintLayout>cv.put("uspwd",pwd01);
2286. <?xml version="1.0" encoding="utf-8"?>
2287. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2288.     xmlns:app="http://schemas.android.com/apk/res-auto"
2289.     xmlns:tools="http://schemas.android.com/tools"
2290.     android:layout_width="match_parent"
2291.     android:layout_height="match_parent"
2292.     tools:context=".Welcome">
2293.     <TextView
2294.         android:id="@+id/mainword"
2295.         android:layout_width="fill_parent"
2296.         android:layout_height="fill_parent"
2297.         android:gravity="center"
2298.         android:textSize="22dp"
2299.         tools:ignore="MissingConstraints" />
2300. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2301. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2302.     xmlns:app="http://schemas.android.com/apk/res-auto"
2303.     xmlns:tools="http://schemas.android.com/tools"
2304.     android:layout_width="match_parent"
2305.     android:layout_height="match_parent"
2306.     tools:context=".Welcome">
2307.     <TextView
2308.         android:id="@+id/mainword"
2309.         android:layout_width="fill_parent"
2310.         android:layout_height="fill_parent"
2311.         android:gravity="center"
2312.         android:textSize="22dp"
2313.         tools:ignore="MissingConstraints" />
2314. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2315. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2316.     xmlns:app="http://schemas.android.com/apk/res-auto"
2317.     xmlns:tools="http://schemas.android.com/tools"
2318.     android:layout_width="match_parent"
2319.     android:layout_height="match_parent"
2320.     tools:context=".Welcome">
2321.     <TextView
2322.         android:id="@+id/mainword"
2323.         android:layout_width="fill_parent"
2324.         android:layout_height="fill_parent"
2325.         android:gravity="center"
2326.         android:textSize="22dp"
2327.         tools:ignore="MissingConstraints" />
2328. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2329. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2330.     xmlns:app="http://schemas.android.com/apk/res-auto"
2331.     xmlns:tools="http://schemas.android.com/tools"
2332.     android:layout_width="match_parent"
2333.     android:layout_height="match_parent"
2334.     tools:context=".Welcome">
2335.     <TextView
2336.         android:id="@+id/mainword"
2337.         android:layout_width="fill_parent"
2338.         android:layout_height="fill_parent"
2339.         android:gravity="center"
2340.         android:textSize="22dp"
2341.         tools:ignore="MissingConstraints" />
2342. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2343. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2344.     xmlns:app="http://schemas.android.com/apk/res-auto"
2345.     xmlns:tools="http://schemas.android.com/tools"
2346.     android:layout_width="match_parent"
2347.     android:layout_height="match_parent"
2348.     tools:context=".Welcome">
2349.     <TextView
2350.         android:id="@+id/mainword"
2351.         android:layout_width="fill_parent"
2352.         android:layout_height="fill_parent"
2353.         android:gravity="center"
2354.         android:textSize="22dp"
2355.         tools:ignore="MissingConstraints" />
2356. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2357. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2358.     xmlns:app="http://schemas.android.com/apk/res-auto"
2359.     xmlns:tools="http://schemas.android.com/tools"
2360.     android:layout_width="match_parent"
2361.     android:layout_height="match_parent"
2362.     tools:context=".Welcome">
2363.     <TextView
2364.         android:id="@+id/mainword"
2365.         android:layout_width="fill_parent"
2366.         android:layout_height="fill_parent"
2367.         android:gravity="center"
2368.         android:textSize="22dp"
2369.         tools:ignore="MissingConstraints" />
2370. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2371. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2372.     xmlns:app="http://schemas.android.com/apk/res-auto"
2373.     xmlns:tools="http://schemas.android.com/tools"
2374.     android:layout_width="match_parent"
2375.     android:layout_height="match_parent"
2376.     tools:context=".Welcome">
2377.     <TextView
2378.         android:id="@+id/mainword"
2379.         android:layout_width="fill_parent"
2380.         android:layout_height="fill_parent"
2381.         android:gravity="center"
2382.         android:textSize="22dp"
2383.         tools:ignore="MissingConstraints" />
2384. </androidx.constraintlayout.widget.ConstraintLayout>db.insert("logins",null,cv);
2385. <?xml version="1.0" encoding="utf-8"?>
2386. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2387.     xmlns:app="http://schemas.android.com/apk/res-auto"
2388.     xmlns:tools="http://schemas.android.com/tools"
2389.     android:layout_width="match_parent"
2390.     android:layout_height="match_parent"
2391.     tools:context=".Welcome">
2392.     <TextView
2393.         android:id="@+id/mainword"
2394.         android:layout_width="fill_parent"
2395.         android:layout_height="fill_parent"
2396.         android:gravity="center"
2397.         android:textSize="22dp"
2398.         tools:ignore="MissingConstraints" />
2399. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2400. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2401.     xmlns:app="http://schemas.android.com/apk/res-auto"
2402.     xmlns:tools="http://schemas.android.com/tools"
2403.     android:layout_width="match_parent"
2404.     android:layout_height="match_parent"
2405.     tools:context=".Welcome">
2406.     <TextView
2407.         android:id="@+id/mainword"
2408.         android:layout_width="fill_parent"
2409.         android:layout_height="fill_parent"
2410.         android:gravity="center"
2411.         android:textSize="22dp"
2412.         tools:ignore="MissingConstraints" />
2413. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2414. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2415.     xmlns:app="http://schemas.android.com/apk/res-auto"
2416.     xmlns:tools="http://schemas.android.com/tools"
2417.     android:layout_width="match_parent"
2418.     android:layout_height="match_parent"
2419.     tools:context=".Welcome">
2420.     <TextView
2421.         android:id="@+id/mainword"
2422.         android:layout_width="fill_parent"
2423.         android:layout_height="fill_parent"
2424.         android:gravity="center"
2425.         android:textSize="22dp"
2426.         tools:ignore="MissingConstraints" />
2427. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2428. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2429.     xmlns:app="http://schemas.android.com/apk/res-auto"
2430.     xmlns:tools="http://schemas.android.com/tools"
2431.     android:layout_width="match_parent"
2432.     android:layout_height="match_parent"
2433.     tools:context=".Welcome">
2434.     <TextView
2435.         android:id="@+id/mainword"
2436.         android:layout_width="fill_parent"
2437.         android:layout_height="fill_parent"
2438.         android:gravity="center"
2439.         android:textSize="22dp"
2440.         tools:ignore="MissingConstraints" />
2441. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2442. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2443.     xmlns:app="http://schemas.android.com/apk/res-auto"
2444.     xmlns:tools="http://schemas.android.com/tools"
2445.     android:layout_width="match_parent"
2446.     android:layout_height="match_parent"
2447.     tools:context=".Welcome">
2448.     <TextView
2449.         android:id="@+id/mainword"
2450.         android:layout_width="fill_parent"
2451.         android:layout_height="fill_parent"
2452.         android:gravity="center"
2453.         android:textSize="22dp"
2454.         tools:ignore="MissingConstraints" />
2455. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2456. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2457.     xmlns:app="http://schemas.android.com/apk/res-auto"
2458.     xmlns:tools="http://schemas.android.com/tools"
2459.     android:layout_width="match_parent"
2460.     android:layout_height="match_parent"
2461.     tools:context=".Welcome">
2462.     <TextView
2463.         android:id="@+id/mainword"
2464.         android:layout_width="fill_parent"
2465.         android:layout_height="fill_parent"
2466.         android:gravity="center"
2467.         android:textSize="22dp"
2468.         tools:ignore="MissingConstraints" />
2469. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2470. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2471.     xmlns:app="http://schemas.android.com/apk/res-auto"
2472.     xmlns:tools="http://schemas.android.com/tools"
2473.     android:layout_width="match_parent"
2474.     android:layout_height="match_parent"
2475.     tools:context=".Welcome">
2476.     <TextView
2477.         android:id="@+id/mainword"
2478.         android:layout_width="fill_parent"
2479.         android:layout_height="fill_parent"
2480.         android:gravity="center"
2481.         android:textSize="22dp"
2482.         tools:ignore="MissingConstraints" />
2483. </androidx.constraintlayout.widget.ConstraintLayout>SharedPreferences.Editor editor = sp.edit();
2484. <?xml version="1.0" encoding="utf-8"?>
2485. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2486.     xmlns:app="http://schemas.android.com/apk/res-auto"
2487.     xmlns:tools="http://schemas.android.com/tools"
2488.     android:layout_width="match_parent"
2489.     android:layout_height="match_parent"
2490.     tools:context=".Welcome">
2491.     <TextView
2492.         android:id="@+id/mainword"
2493.         android:layout_width="fill_parent"
2494.         android:layout_height="fill_parent"
2495.         android:gravity="center"
2496.         android:textSize="22dp"
2497.         tools:ignore="MissingConstraints" />
2498. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2499. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2500.     xmlns:app="http://schemas.android.com/apk/res-auto"
2501.     xmlns:tools="http://schemas.android.com/tools"
2502.     android:layout_width="match_parent"
2503.     android:layout_height="match_parent"
2504.     tools:context=".Welcome">
2505.     <TextView
2506.         android:id="@+id/mainword"
2507.         android:layout_width="fill_parent"
2508.         android:layout_height="fill_parent"
2509.         android:gravity="center"
2510.         android:textSize="22dp"
2511.         tools:ignore="MissingConstraints" />
2512. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2513. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2514.     xmlns:app="http://schemas.android.com/apk/res-auto"
2515.     xmlns:tools="http://schemas.android.com/tools"
2516.     android:layout_width="match_parent"
2517.     android:layout_height="match_parent"
2518.     tools:context=".Welcome">
2519.     <TextView
2520.         android:id="@+id/mainword"
2521.         android:layout_width="fill_parent"
2522.         android:layout_height="fill_parent"
2523.         android:gravity="center"
2524.         android:textSize="22dp"
2525.         tools:ignore="MissingConstraints" />
2526. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2527. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2528.     xmlns:app="http://schemas.android.com/apk/res-auto"
2529.     xmlns:tools="http://schemas.android.com/tools"
2530.     android:layout_width="match_parent"
2531.     android:layout_height="match_parent"
2532.     tools:context=".Welcome">
2533.     <TextView
2534.         android:id="@+id/mainword"
2535.         android:layout_width="fill_parent"
2536.         android:layout_height="fill_parent"
2537.         android:gravity="center"
2538.         android:textSize="22dp"
2539.         tools:ignore="MissingConstraints" />
2540. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2541. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2542.     xmlns:app="http://schemas.android.com/apk/res-auto"
2543.     xmlns:tools="http://schemas.android.com/tools"
2544.     android:layout_width="match_parent"
2545.     android:layout_height="match_parent"
2546.     tools:context=".Welcome">
2547.     <TextView
2548.         android:id="@+id/mainword"
2549.         android:layout_width="fill_parent"
2550.         android:layout_height="fill_parent"
2551.         android:gravity="center"
2552.         android:textSize="22dp"
2553.         tools:ignore="MissingConstraints" />
2554. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2555. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2556.     xmlns:app="http://schemas.android.com/apk/res-auto"
2557.     xmlns:tools="http://schemas.android.com/tools"
2558.     android:layout_width="match_parent"
2559.     android:layout_height="match_parent"
2560.     tools:context=".Welcome">
2561.     <TextView
2562.         android:id="@+id/mainword"
2563.         android:layout_width="fill_parent"
2564.         android:layout_height="fill_parent"
2565.         android:gravity="center"
2566.         android:textSize="22dp"
2567.         tools:ignore="MissingConstraints" />
2568. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2569. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2570.     xmlns:app="http://schemas.android.com/apk/res-auto"
2571.     xmlns:tools="http://schemas.android.com/tools"
2572.     android:layout_width="match_parent"
2573.     android:layout_height="match_parent"
2574.     tools:context=".Welcome">
2575.     <TextView
2576.         android:id="@+id/mainword"
2577.         android:layout_width="fill_parent"
2578.         android:layout_height="fill_parent"
2579.         android:gravity="center"
2580.         android:textSize="22dp"
2581.         tools:ignore="MissingConstraints" />
2582. </androidx.constraintlayout.widget.ConstraintLayout>editor.putString("usname",name);
2583. <?xml version="1.0" encoding="utf-8"?>
2584. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2585.     xmlns:app="http://schemas.android.com/apk/res-auto"
2586.     xmlns:tools="http://schemas.android.com/tools"
2587.     android:layout_width="match_parent"
2588.     android:layout_height="match_parent"
2589.     tools:context=".Welcome">
2590.     <TextView
2591.         android:id="@+id/mainword"
2592.         android:layout_width="fill_parent"
2593.         android:layout_height="fill_parent"
2594.         android:gravity="center"
2595.         android:textSize="22dp"
2596.         tools:ignore="MissingConstraints" />
2597. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2598. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2599.     xmlns:app="http://schemas.android.com/apk/res-auto"
2600.     xmlns:tools="http://schemas.android.com/tools"
2601.     android:layout_width="match_parent"
2602.     android:layout_height="match_parent"
2603.     tools:context=".Welcome">
2604.     <TextView
2605.         android:id="@+id/mainword"
2606.         android:layout_width="fill_parent"
2607.         android:layout_height="fill_parent"
2608.         android:gravity="center"
2609.         android:textSize="22dp"
2610.         tools:ignore="MissingConstraints" />
2611. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2612. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2613.     xmlns:app="http://schemas.android.com/apk/res-auto"
2614.     xmlns:tools="http://schemas.android.com/tools"
2615.     android:layout_width="match_parent"
2616.     android:layout_height="match_parent"
2617.     tools:context=".Welcome">
2618.     <TextView
2619.         android:id="@+id/mainword"
2620.         android:layout_width="fill_parent"
2621.         android:layout_height="fill_parent"
2622.         android:gravity="center"
2623.         android:textSize="22dp"
2624.         tools:ignore="MissingConstraints" />
2625. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2626. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2627.     xmlns:app="http://schemas.android.com/apk/res-auto"
2628.     xmlns:tools="http://schemas.android.com/tools"
2629.     android:layout_width="match_parent"
2630.     android:layout_height="match_parent"
2631.     tools:context=".Welcome">
2632.     <TextView
2633.         android:id="@+id/mainword"
2634.         android:layout_width="fill_parent"
2635.         android:layout_height="fill_parent"
2636.         android:gravity="center"
2637.         android:textSize="22dp"
2638.         tools:ignore="MissingConstraints" />
2639. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2640. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2641.     xmlns:app="http://schemas.android.com/apk/res-auto"
2642.     xmlns:tools="http://schemas.android.com/tools"
2643.     android:layout_width="match_parent"
2644.     android:layout_height="match_parent"
2645.     tools:context=".Welcome">
2646.     <TextView
2647.         android:id="@+id/mainword"
2648.         android:layout_width="fill_parent"
2649.         android:layout_height="fill_parent"
2650.         android:gravity="center"
2651.         android:textSize="22dp"
2652.         tools:ignore="MissingConstraints" />
2653. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2654. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2655.     xmlns:app="http://schemas.android.com/apk/res-auto"
2656.     xmlns:tools="http://schemas.android.com/tools"
2657.     android:layout_width="match_parent"
2658.     android:layout_height="match_parent"
2659.     tools:context=".Welcome">
2660.     <TextView
2661.         android:id="@+id/mainword"
2662.         android:layout_width="fill_parent"
2663.         android:layout_height="fill_parent"
2664.         android:gravity="center"
2665.         android:textSize="22dp"
2666.         tools:ignore="MissingConstraints" />
2667. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2668. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2669.     xmlns:app="http://schemas.android.com/apk/res-auto"
2670.     xmlns:tools="http://schemas.android.com/tools"
2671.     android:layout_width="match_parent"
2672.     android:layout_height="match_parent"
2673.     tools:context=".Welcome">
2674.     <TextView
2675.         android:id="@+id/mainword"
2676.         android:layout_width="fill_parent"
2677.         android:layout_height="fill_parent"
2678.         android:gravity="center"
2679.         android:textSize="22dp"
2680.         tools:ignore="MissingConstraints" />
2681. </androidx.constraintlayout.widget.ConstraintLayout>editor.putString("uspwd",pwd01);
2682. <?xml version="1.0" encoding="utf-8"?>
2683. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2684.     xmlns:app="http://schemas.android.com/apk/res-auto"
2685.     xmlns:tools="http://schemas.android.com/tools"
2686.     android:layout_width="match_parent"
2687.     android:layout_height="match_parent"
2688.     tools:context=".Welcome">
2689.     <TextView
2690.         android:id="@+id/mainword"
2691.         android:layout_width="fill_parent"
2692.         android:layout_height="fill_parent"
2693.         android:gravity="center"
2694.         android:textSize="22dp"
2695.         tools:ignore="MissingConstraints" />
2696. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2697. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2698.     xmlns:app="http://schemas.android.com/apk/res-auto"
2699.     xmlns:tools="http://schemas.android.com/tools"
2700.     android:layout_width="match_parent"
2701.     android:layout_height="match_parent"
2702.     tools:context=".Welcome">
2703.     <TextView
2704.         android:id="@+id/mainword"
2705.         android:layout_width="fill_parent"
2706.         android:layout_height="fill_parent"
2707.         android:gravity="center"
2708.         android:textSize="22dp"
2709.         tools:ignore="MissingConstraints" />
2710. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2711. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2712.     xmlns:app="http://schemas.android.com/apk/res-auto"
2713.     xmlns:tools="http://schemas.android.com/tools"
2714.     android:layout_width="match_parent"
2715.     android:layout_height="match_parent"
2716.     tools:context=".Welcome">
2717.     <TextView
2718.         android:id="@+id/mainword"
2719.         android:layout_width="fill_parent"
2720.         android:layout_height="fill_parent"
2721.         android:gravity="center"
2722.         android:textSize="22dp"
2723.         tools:ignore="MissingConstraints" />
2724. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2725. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2726.     xmlns:app="http://schemas.android.com/apk/res-auto"
2727.     xmlns:tools="http://schemas.android.com/tools"
2728.     android:layout_width="match_parent"
2729.     android:layout_height="match_parent"
2730.     tools:context=".Welcome">
2731.     <TextView
2732.         android:id="@+id/mainword"
2733.         android:layout_width="fill_parent"
2734.         android:layout_height="fill_parent"
2735.         android:gravity="center"
2736.         android:textSize="22dp"
2737.         tools:ignore="MissingConstraints" />
2738. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2739. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2740.     xmlns:app="http://schemas.android.com/apk/res-auto"
2741.     xmlns:tools="http://schemas.android.com/tools"
2742.     android:layout_width="match_parent"
2743.     android:layout_height="match_parent"
2744.     tools:context=".Welcome">
2745.     <TextView
2746.         android:id="@+id/mainword"
2747.         android:layout_width="fill_parent"
2748.         android:layout_height="fill_parent"
2749.         android:gravity="center"
2750.         android:textSize="22dp"
2751.         tools:ignore="MissingConstraints" />
2752. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2753. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2754.     xmlns:app="http://schemas.android.com/apk/res-auto"
2755.     xmlns:tools="http://schemas.android.com/tools"
2756.     android:layout_width="match_parent"
2757.     android:layout_height="match_parent"
2758.     tools:context=".Welcome">
2759.     <TextView
2760.         android:id="@+id/mainword"
2761.         android:layout_width="fill_parent"
2762.         android:layout_height="fill_parent"
2763.         android:gravity="center"
2764.         android:textSize="22dp"
2765.         tools:ignore="MissingConstraints" />
2766. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2767. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2768.     xmlns:app="http://schemas.android.com/apk/res-auto"
2769.     xmlns:tools="http://schemas.android.com/tools"
2770.     android:layout_width="match_parent"
2771.     android:layout_height="match_parent"
2772.     tools:context=".Welcome">
2773.     <TextView
2774.         android:id="@+id/mainword"
2775.         android:layout_width="fill_parent"
2776.         android:layout_height="fill_parent"
2777.         android:gravity="center"
2778.         android:textSize="22dp"
2779.         tools:ignore="MissingConstraints" />
2780. </androidx.constraintlayout.widget.ConstraintLayout>editor.commit();
2781. <?xml version="1.0" encoding="utf-8"?>
2782. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2783.     xmlns:app="http://schemas.android.com/apk/res-auto"
2784.     xmlns:tools="http://schemas.android.com/tools"
2785.     android:layout_width="match_parent"
2786.     android:layout_height="match_parent"
2787.     tools:context=".Welcome">
2788.     <TextView
2789.         android:id="@+id/mainword"
2790.         android:layout_width="fill_parent"
2791.         android:layout_height="fill_parent"
2792.         android:gravity="center"
2793.         android:textSize="22dp"
2794.         tools:ignore="MissingConstraints" />
2795. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2796. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2797.     xmlns:app="http://schemas.android.com/apk/res-auto"
2798.     xmlns:tools="http://schemas.android.com/tools"
2799.     android:layout_width="match_parent"
2800.     android:layout_height="match_parent"
2801.     tools:context=".Welcome">
2802.     <TextView
2803.         android:id="@+id/mainword"
2804.         android:layout_width="fill_parent"
2805.         android:layout_height="fill_parent"
2806.         android:gravity="center"
2807.         android:textSize="22dp"
2808.         tools:ignore="MissingConstraints" />
2809. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2810. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2811.     xmlns:app="http://schemas.android.com/apk/res-auto"
2812.     xmlns:tools="http://schemas.android.com/tools"
2813.     android:layout_width="match_parent"
2814.     android:layout_height="match_parent"
2815.     tools:context=".Welcome">
2816.     <TextView
2817.         android:id="@+id/mainword"
2818.         android:layout_width="fill_parent"
2819.         android:layout_height="fill_parent"
2820.         android:gravity="center"
2821.         android:textSize="22dp"
2822.         tools:ignore="MissingConstraints" />
2823. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2824. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2825.     xmlns:app="http://schemas.android.com/apk/res-auto"
2826.     xmlns:tools="http://schemas.android.com/tools"
2827.     android:layout_width="match_parent"
2828.     android:layout_height="match_parent"
2829.     tools:context=".Welcome">
2830.     <TextView
2831.         android:id="@+id/mainword"
2832.         android:layout_width="fill_parent"
2833.         android:layout_height="fill_parent"
2834.         android:gravity="center"
2835.         android:textSize="22dp"
2836.         tools:ignore="MissingConstraints" />
2837. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2838. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2839.     xmlns:app="http://schemas.android.com/apk/res-auto"
2840.     xmlns:tools="http://schemas.android.com/tools"
2841.     android:layout_width="match_parent"
2842.     android:layout_height="match_parent"
2843.     tools:context=".Welcome">
2844.     <TextView
2845.         android:id="@+id/mainword"
2846.         android:layout_width="fill_parent"
2847.         android:layout_height="fill_parent"
2848.         android:gravity="center"
2849.         android:textSize="22dp"
2850.         tools:ignore="MissingConstraints" />
2851. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2852. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2853.     xmlns:app="http://schemas.android.com/apk/res-auto"
2854.     xmlns:tools="http://schemas.android.com/tools"
2855.     android:layout_width="match_parent"
2856.     android:layout_height="match_parent"
2857.     tools:context=".Welcome">
2858.     <TextView
2859.         android:id="@+id/mainword"
2860.         android:layout_width="fill_parent"
2861.         android:layout_height="fill_parent"
2862.         android:gravity="center"
2863.         android:textSize="22dp"
2864.         tools:ignore="MissingConstraints" />
2865. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2866. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2867.     xmlns:app="http://schemas.android.com/apk/res-auto"
2868.     xmlns:tools="http://schemas.android.com/tools"
2869.     android:layout_width="match_parent"
2870.     android:layout_height="match_parent"
2871.     tools:context=".Welcome">
2872.     <TextView
2873.         android:id="@+id/mainword"
2874.         android:layout_width="fill_parent"
2875.         android:layout_height="fill_parent"
2876.         android:gravity="center"
2877.         android:textSize="22dp"
2878.         tools:ignore="MissingConstraints" />
2879. </androidx.constraintlayout.widget.ConstraintLayout>Intent intent = new Intent();
2880. <?xml version="1.0" encoding="utf-8"?>
2881. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2882.     xmlns:app="http://schemas.android.com/apk/res-auto"
2883.     xmlns:tools="http://schemas.android.com/tools"
2884.     android:layout_width="match_parent"
2885.     android:layout_height="match_parent"
2886.     tools:context=".Welcome">
2887.     <TextView
2888.         android:id="@+id/mainword"
2889.         android:layout_width="fill_parent"
2890.         android:layout_height="fill_parent"
2891.         android:gravity="center"
2892.         android:textSize="22dp"
2893.         tools:ignore="MissingConstraints" />
2894. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2895. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2896.     xmlns:app="http://schemas.android.com/apk/res-auto"
2897.     xmlns:tools="http://schemas.android.com/tools"
2898.     android:layout_width="match_parent"
2899.     android:layout_height="match_parent"
2900.     tools:context=".Welcome">
2901.     <TextView
2902.         android:id="@+id/mainword"
2903.         android:layout_width="fill_parent"
2904.         android:layout_height="fill_parent"
2905.         android:gravity="center"
2906.         android:textSize="22dp"
2907.         tools:ignore="MissingConstraints" />
2908. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2909. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2910.     xmlns:app="http://schemas.android.com/apk/res-auto"
2911.     xmlns:tools="http://schemas.android.com/tools"
2912.     android:layout_width="match_parent"
2913.     android:layout_height="match_parent"
2914.     tools:context=".Welcome">
2915.     <TextView
2916.         android:id="@+id/mainword"
2917.         android:layout_width="fill_parent"
2918.         android:layout_height="fill_parent"
2919.         android:gravity="center"
2920.         android:textSize="22dp"
2921.         tools:ignore="MissingConstraints" />
2922. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2923. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2924.     xmlns:app="http://schemas.android.com/apk/res-auto"
2925.     xmlns:tools="http://schemas.android.com/tools"
2926.     android:layout_width="match_parent"
2927.     android:layout_height="match_parent"
2928.     tools:context=".Welcome">
2929.     <TextView
2930.         android:id="@+id/mainword"
2931.         android:layout_width="fill_parent"
2932.         android:layout_height="fill_parent"
2933.         android:gravity="center"
2934.         android:textSize="22dp"
2935.         tools:ignore="MissingConstraints" />
2936. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2937. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2938.     xmlns:app="http://schemas.android.com/apk/res-auto"
2939.     xmlns:tools="http://schemas.android.com/tools"
2940.     android:layout_width="match_parent"
2941.     android:layout_height="match_parent"
2942.     tools:context=".Welcome">
2943.     <TextView
2944.         android:id="@+id/mainword"
2945.         android:layout_width="fill_parent"
2946.         android:layout_height="fill_parent"
2947.         android:gravity="center"
2948.         android:textSize="22dp"
2949.         tools:ignore="MissingConstraints" />
2950. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2951. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2952.     xmlns:app="http://schemas.android.com/apk/res-auto"
2953.     xmlns:tools="http://schemas.android.com/tools"
2954.     android:layout_width="match_parent"
2955.     android:layout_height="match_parent"
2956.     tools:context=".Welcome">
2957.     <TextView
2958.         android:id="@+id/mainword"
2959.         android:layout_width="fill_parent"
2960.         android:layout_height="fill_parent"
2961.         android:gravity="center"
2962.         android:textSize="22dp"
2963.         tools:ignore="MissingConstraints" />
2964. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
2965. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2966.     xmlns:app="http://schemas.android.com/apk/res-auto"
2967.     xmlns:tools="http://schemas.android.com/tools"
2968.     android:layout_width="match_parent"
2969.     android:layout_height="match_parent"
2970.     tools:context=".Welcome">
2971.     <TextView
2972.         android:id="@+id/mainword"
2973.         android:layout_width="fill_parent"
2974.         android:layout_height="fill_parent"
2975.         android:gravity="center"
2976.         android:textSize="22dp"
2977.         tools:ignore="MissingConstraints" />
2978. </androidx.constraintlayout.widget.ConstraintLayout>intent.setClass(Register.this,MainActivity.class);<?xml version="1.0" encoding="utf-8"?>
2979. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2980.     xmlns:app="http://schemas.android.com/apk/res-auto"
2981.     xmlns:tools="http://schemas.android.com/tools"
2982.     android:layout_width="match_parent"
2983.     android:layout_height="match_parent"
2984.     tools:context=".Welcome">
2985.     <TextView
2986.         android:id="@+id/mainword"
2987.         android:layout_width="fill_parent"
2988.         android:layout_height="fill_parent"
2989.         android:gravity="center"
2990.         android:textSize="22dp"
2991.         tools:ignore="MissingConstraints" />
2992. </androidx.constraintlayout.widget.ConstraintLayout>  //跳转到登录页面
2993. <?xml version="1.0" encoding="utf-8"?>
2994. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
2995.     xmlns:app="http://schemas.android.com/apk/res-auto"
2996.     xmlns:tools="http://schemas.android.com/tools"
2997.     android:layout_width="match_parent"
2998.     android:layout_height="match_parent"
2999.     tools:context=".Welcome">
3000.     <TextView
3001.         android:id="@+id/mainword"
3002.         android:layout_width="fill_parent"
3003.         android:layout_height="fill_parent"
3004.         android:gravity="center"
3005.         android:textSize="22dp"
3006.         tools:ignore="MissingConstraints" />
3007. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3008. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3009.     xmlns:app="http://schemas.android.com/apk/res-auto"
3010.     xmlns:tools="http://schemas.android.com/tools"
3011.     android:layout_width="match_parent"
3012.     android:layout_height="match_parent"
3013.     tools:context=".Welcome">
3014.     <TextView
3015.         android:id="@+id/mainword"
3016.         android:layout_width="fill_parent"
3017.         android:layout_height="fill_parent"
3018.         android:gravity="center"
3019.         android:textSize="22dp"
3020.         tools:ignore="MissingConstraints" />
3021. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3022. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3023.     xmlns:app="http://schemas.android.com/apk/res-auto"
3024.     xmlns:tools="http://schemas.android.com/tools"
3025.     android:layout_width="match_parent"
3026.     android:layout_height="match_parent"
3027.     tools:context=".Welcome">
3028.     <TextView
3029.         android:id="@+id/mainword"
3030.         android:layout_width="fill_parent"
3031.         android:layout_height="fill_parent"
3032.         android:gravity="center"
3033.         android:textSize="22dp"
3034.         tools:ignore="MissingConstraints" />
3035. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3036. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3037.     xmlns:app="http://schemas.android.com/apk/res-auto"
3038.     xmlns:tools="http://schemas.android.com/tools"
3039.     android:layout_width="match_parent"
3040.     android:layout_height="match_parent"
3041.     tools:context=".Welcome">
3042.     <TextView
3043.         android:id="@+id/mainword"
3044.         android:layout_width="fill_parent"
3045.         android:layout_height="fill_parent"
3046.         android:gravity="center"
3047.         android:textSize="22dp"
3048.         tools:ignore="MissingConstraints" />
3049. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3050. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3051.     xmlns:app="http://schemas.android.com/apk/res-auto"
3052.     xmlns:tools="http://schemas.android.com/tools"
3053.     android:layout_width="match_parent"
3054.     android:layout_height="match_parent"
3055.     tools:context=".Welcome">
3056.     <TextView
3057.         android:id="@+id/mainword"
3058.         android:layout_width="fill_parent"
3059.         android:layout_height="fill_parent"
3060.         android:gravity="center"
3061.         android:textSize="22dp"
3062.         tools:ignore="MissingConstraints" />
3063. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3064. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3065.     xmlns:app="http://schemas.android.com/apk/res-auto"
3066.     xmlns:tools="http://schemas.android.com/tools"
3067.     android:layout_width="match_parent"
3068.     android:layout_height="match_parent"
3069.     tools:context=".Welcome">
3070.     <TextView
3071.         android:id="@+id/mainword"
3072.         android:layout_width="fill_parent"
3073.         android:layout_height="fill_parent"
3074.         android:gravity="center"
3075.         android:textSize="22dp"
3076.         tools:ignore="MissingConstraints" />
3077. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3078. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3079.     xmlns:app="http://schemas.android.com/apk/res-auto"
3080.     xmlns:tools="http://schemas.android.com/tools"
3081.     android:layout_width="match_parent"
3082.     android:layout_height="match_parent"
3083.     tools:context=".Welcome">
3084.     <TextView
3085.         android:id="@+id/mainword"
3086.         android:layout_width="fill_parent"
3087.         android:layout_height="fill_parent"
3088.         android:gravity="center"
3089.         android:textSize="22dp"
3090.         tools:ignore="MissingConstraints" />
3091. </androidx.constraintlayout.widget.ConstraintLayout>startActivity(intent);
3092. <?xml version="1.0" encoding="utf-8"?>
3093. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3094.     xmlns:app="http://schemas.android.com/apk/res-auto"
3095.     xmlns:tools="http://schemas.android.com/tools"
3096.     android:layout_width="match_parent"
3097.     android:layout_height="match_parent"
3098.     tools:context=".Welcome">
3099.     <TextView
3100.         android:id="@+id/mainword"
3101.         android:layout_width="fill_parent"
3102.         android:layout_height="fill_parent"
3103.         android:gravity="center"
3104.         android:textSize="22dp"
3105.         tools:ignore="MissingConstraints" />
3106. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3107. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3108.     xmlns:app="http://schemas.android.com/apk/res-auto"
3109.     xmlns:tools="http://schemas.android.com/tools"
3110.     android:layout_width="match_parent"
3111.     android:layout_height="match_parent"
3112.     tools:context=".Welcome">
3113.     <TextView
3114.         android:id="@+id/mainword"
3115.         android:layout_width="fill_parent"
3116.         android:layout_height="fill_parent"
3117.         android:gravity="center"
3118.         android:textSize="22dp"
3119.         tools:ignore="MissingConstraints" />
3120. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3121. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3122.     xmlns:app="http://schemas.android.com/apk/res-auto"
3123.     xmlns:tools="http://schemas.android.com/tools"
3124.     android:layout_width="match_parent"
3125.     android:layout_height="match_parent"
3126.     tools:context=".Welcome">
3127.     <TextView
3128.         android:id="@+id/mainword"
3129.         android:layout_width="fill_parent"
3130.         android:layout_height="fill_parent"
3131.         android:gravity="center"
3132.         android:textSize="22dp"
3133.         tools:ignore="MissingConstraints" />
3134. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3135. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3136.     xmlns:app="http://schemas.android.com/apk/res-auto"
3137.     xmlns:tools="http://schemas.android.com/tools"
3138.     android:layout_width="match_parent"
3139.     android:layout_height="match_parent"
3140.     tools:context=".Welcome">
3141.     <TextView
3142.         android:id="@+id/mainword"
3143.         android:layout_width="fill_parent"
3144.         android:layout_height="fill_parent"
3145.         android:gravity="center"
3146.         android:textSize="22dp"
3147.         tools:ignore="MissingConstraints" />
3148. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3149. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3150.     xmlns:app="http://schemas.android.com/apk/res-auto"
3151.     xmlns:tools="http://schemas.android.com/tools"
3152.     android:layout_width="match_parent"
3153.     android:layout_height="match_parent"
3154.     tools:context=".Welcome">
3155.     <TextView
3156.         android:id="@+id/mainword"
3157.         android:layout_width="fill_parent"
3158.         android:layout_height="fill_parent"
3159.         android:gravity="center"
3160.         android:textSize="22dp"
3161.         tools:ignore="MissingConstraints" />
3162. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3163. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3164.     xmlns:app="http://schemas.android.com/apk/res-auto"
3165.     xmlns:tools="http://schemas.android.com/tools"
3166.     android:layout_width="match_parent"
3167.     android:layout_height="match_parent"
3168.     tools:context=".Welcome">
3169.     <TextView
3170.         android:id="@+id/mainword"
3171.         android:layout_width="fill_parent"
3172.         android:layout_height="fill_parent"
3173.         android:gravity="center"
3174.         android:textSize="22dp"
3175.         tools:ignore="MissingConstraints" />
3176. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3177. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3178.     xmlns:app="http://schemas.android.com/apk/res-auto"
3179.     xmlns:tools="http://schemas.android.com/tools"
3180.     android:layout_width="match_parent"
3181.     android:layout_height="match_parent"
3182.     tools:context=".Welcome">
3183.     <TextView
3184.         android:id="@+id/mainword"
3185.         android:layout_width="fill_parent"
3186.         android:layout_height="fill_parent"
3187.         android:gravity="center"
3188.         android:textSize="22dp"
3189.         tools:ignore="MissingConstraints" />
3190. </androidx.constraintlayout.widget.ConstraintLayout>Toast.makeText(Register.this, "注册成功！", Toast.LENGTH_LONG).show();
3191. <?xml version="1.0" encoding="utf-8"?>
3192. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3193.     xmlns:app="http://schemas.android.com/apk/res-auto"
3194.     xmlns:tools="http://schemas.android.com/tools"
3195.     android:layout_width="match_parent"
3196.     android:layout_height="match_parent"
3197.     tools:context=".Welcome">
3198.     <TextView
3199.         android:id="@+id/mainword"
3200.         android:layout_width="fill_parent"
3201.         android:layout_height="fill_parent"
3202.         android:gravity="center"
3203.         android:textSize="22dp"
3204.         tools:ignore="MissingConstraints" />
3205. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3206. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3207.     xmlns:app="http://schemas.android.com/apk/res-auto"
3208.     xmlns:tools="http://schemas.android.com/tools"
3209.     android:layout_width="match_parent"
3210.     android:layout_height="match_parent"
3211.     tools:context=".Welcome">
3212.     <TextView
3213.         android:id="@+id/mainword"
3214.         android:layout_width="fill_parent"
3215.         android:layout_height="fill_parent"
3216.         android:gravity="center"
3217.         android:textSize="22dp"
3218.         tools:ignore="MissingConstraints" />
3219. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3220. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3221.     xmlns:app="http://schemas.android.com/apk/res-auto"
3222.     xmlns:tools="http://schemas.android.com/tools"
3223.     android:layout_width="match_parent"
3224.     android:layout_height="match_parent"
3225.     tools:context=".Welcome">
3226.     <TextView
3227.         android:id="@+id/mainword"
3228.         android:layout_width="fill_parent"
3229.         android:layout_height="fill_parent"
3230.         android:gravity="center"
3231.         android:textSize="22dp"
3232.         tools:ignore="MissingConstraints" />
3233. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3234. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3235.     xmlns:app="http://schemas.android.com/apk/res-auto"
3236.     xmlns:tools="http://schemas.android.com/tools"
3237.     android:layout_width="match_parent"
3238.     android:layout_height="match_parent"
3239.     tools:context=".Welcome">
3240.     <TextView
3241.         android:id="@+id/mainword"
3242.         android:layout_width="fill_parent"
3243.         android:layout_height="fill_parent"
3244.         android:gravity="center"
3245.         android:textSize="22dp"
3246.         tools:ignore="MissingConstraints" />
3247. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3248. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3249.     xmlns:app="http://schemas.android.com/apk/res-auto"
3250.     xmlns:tools="http://schemas.android.com/tools"
3251.     android:layout_width="match_parent"
3252.     android:layout_height="match_parent"
3253.     tools:context=".Welcome">
3254.     <TextView
3255.         android:id="@+id/mainword"
3256.         android:layout_width="fill_parent"
3257.         android:layout_height="fill_parent"
3258.         android:gravity="center"
3259.         android:textSize="22dp"
3260.         tools:ignore="MissingConstraints" />
3261. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3262. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3263.     xmlns:app="http://schemas.android.com/apk/res-auto"
3264.     xmlns:tools="http://schemas.android.com/tools"
3265.     android:layout_width="match_parent"
3266.     android:layout_height="match_parent"
3267.     tools:context=".Welcome">
3268.     <TextView
3269.         android:id="@+id/mainword"
3270.         android:layout_width="fill_parent"
3271.         android:layout_height="fill_parent"
3272.         android:gravity="center"
3273.         android:textSize="22dp"
3274.         tools:ignore="MissingConstraints" />
3275. </androidx.constraintlayout.widget.ConstraintLayout>}
3276. <?xml version="1.0" encoding="utf-8"?>
3277. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3278.     xmlns:app="http://schemas.android.com/apk/res-auto"
3279.     xmlns:tools="http://schemas.android.com/tools"
3280.     android:layout_width="match_parent"
3281.     android:layout_height="match_parent"
3282.     tools:context=".Welcome">
3283.     <TextView
3284.         android:id="@+id/mainword"
3285.         android:layout_width="fill_parent"
3286.         android:layout_height="fill_parent"
3287.         android:gravity="center"
3288.         android:textSize="22dp"
3289.         tools:ignore="MissingConstraints" />
3290. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3291. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3292.     xmlns:app="http://schemas.android.com/apk/res-auto"
3293.     xmlns:tools="http://schemas.android.com/tools"
3294.     android:layout_width="match_parent"
3295.     android:layout_height="match_parent"
3296.     tools:context=".Welcome">
3297.     <TextView
3298.         android:id="@+id/mainword"
3299.         android:layout_width="fill_parent"
3300.         android:layout_height="fill_parent"
3301.         android:gravity="center"
3302.         android:textSize="22dp"
3303.         tools:ignore="MissingConstraints" />
3304. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3305. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3306.     xmlns:app="http://schemas.android.com/apk/res-auto"
3307.     xmlns:tools="http://schemas.android.com/tools"
3308.     android:layout_width="match_parent"
3309.     android:layout_height="match_parent"
3310.     tools:context=".Welcome">
3311.     <TextView
3312.         android:id="@+id/mainword"
3313.         android:layout_width="fill_parent"
3314.         android:layout_height="fill_parent"
3315.         android:gravity="center"
3316.         android:textSize="22dp"
3317.         tools:ignore="MissingConstraints" />
3318. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3319. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3320.     xmlns:app="http://schemas.android.com/apk/res-auto"
3321.     xmlns:tools="http://schemas.android.com/tools"
3322.     android:layout_width="match_parent"
3323.     android:layout_height="match_parent"
3324.     tools:context=".Welcome">
3325.     <TextView
3326.         android:id="@+id/mainword"
3327.         android:layout_width="fill_parent"
3328.         android:layout_height="fill_parent"
3329.         android:gravity="center"
3330.         android:textSize="22dp"
3331.         tools:ignore="MissingConstraints" />
3332. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3333. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3334.     xmlns:app="http://schemas.android.com/apk/res-auto"
3335.     xmlns:tools="http://schemas.android.com/tools"
3336.     android:layout_width="match_parent"
3337.     android:layout_height="match_parent"
3338.     tools:context=".Welcome">
3339.     <TextView
3340.         android:id="@+id/mainword"
3341.         android:layout_width="fill_parent"
3342.         android:layout_height="fill_parent"
3343.         android:gravity="center"
3344.         android:textSize="22dp"
3345.         tools:ignore="MissingConstraints" />
3346. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3347. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3348.     xmlns:app="http://schemas.android.com/apk/res-auto"
3349.     xmlns:tools="http://schemas.android.com/tools"
3350.     android:layout_width="match_parent"
3351.     android:layout_height="match_parent"
3352.     tools:context=".Welcome">
3353.     <TextView
3354.         android:id="@+id/mainword"
3355.         android:layout_width="fill_parent"
3356.         android:layout_height="fill_parent"
3357.         android:gravity="center"
3358.         android:textSize="22dp"
3359.         tools:ignore="MissingConstraints" />
3360. </androidx.constraintlayout.widget.ConstraintLayout>else {
3361. <?xml version="1.0" encoding="utf-8"?>
3362. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3363.     xmlns:app="http://schemas.android.com/apk/res-auto"
3364.     xmlns:tools="http://schemas.android.com/tools"
3365.     android:layout_width="match_parent"
3366.     android:layout_height="match_parent"
3367.     tools:context=".Welcome">
3368.     <TextView
3369.         android:id="@+id/mainword"
3370.         android:layout_width="fill_parent"
3371.         android:layout_height="fill_parent"
3372.         android:gravity="center"
3373.         android:textSize="22dp"
3374.         tools:ignore="MissingConstraints" />
3375. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3376. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3377.     xmlns:app="http://schemas.android.com/apk/res-auto"
3378.     xmlns:tools="http://schemas.android.com/tools"
3379.     android:layout_width="match_parent"
3380.     android:layout_height="match_parent"
3381.     tools:context=".Welcome">
3382.     <TextView
3383.         android:id="@+id/mainword"
3384.         android:layout_width="fill_parent"
3385.         android:layout_height="fill_parent"
3386.         android:gravity="center"
3387.         android:textSize="22dp"
3388.         tools:ignore="MissingConstraints" />
3389. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3390. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3391.     xmlns:app="http://schemas.android.com/apk/res-auto"
3392.     xmlns:tools="http://schemas.android.com/tools"
3393.     android:layout_width="match_parent"
3394.     android:layout_height="match_parent"
3395.     tools:context=".Welcome">
3396.     <TextView
3397.         android:id="@+id/mainword"
3398.         android:layout_width="fill_parent"
3399.         android:layout_height="fill_parent"
3400.         android:gravity="center"
3401.         android:textSize="22dp"
3402.         tools:ignore="MissingConstraints" />
3403. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3404. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3405.     xmlns:app="http://schemas.android.com/apk/res-auto"
3406.     xmlns:tools="http://schemas.android.com/tools"
3407.     android:layout_width="match_parent"
3408.     android:layout_height="match_parent"
3409.     tools:context=".Welcome">
3410.     <TextView
3411.         android:id="@+id/mainword"
3412.         android:layout_width="fill_parent"
3413.         android:layout_height="fill_parent"
3414.         android:gravity="center"
3415.         android:textSize="22dp"
3416.         tools:ignore="MissingConstraints" />
3417. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3418. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3419.     xmlns:app="http://schemas.android.com/apk/res-auto"
3420.     xmlns:tools="http://schemas.android.com/tools"
3421.     android:layout_width="match_parent"
3422.     android:layout_height="match_parent"
3423.     tools:context=".Welcome">
3424.     <TextView
3425.         android:id="@+id/mainword"
3426.         android:layout_width="fill_parent"
3427.         android:layout_height="fill_parent"
3428.         android:gravity="center"
3429.         android:textSize="22dp"
3430.         tools:ignore="MissingConstraints" />
3431. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3432. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3433.     xmlns:app="http://schemas.android.com/apk/res-auto"
3434.     xmlns:tools="http://schemas.android.com/tools"
3435.     android:layout_width="match_parent"
3436.     android:layout_height="match_parent"
3437.     tools:context=".Welcome">
3438.     <TextView
3439.         android:id="@+id/mainword"
3440.         android:layout_width="fill_parent"
3441.         android:layout_height="fill_parent"
3442.         android:gravity="center"
3443.         android:textSize="22dp"
3444.         tools:ignore="MissingConstraints" />
3445. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3446. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3447.     xmlns:app="http://schemas.android.com/apk/res-auto"
3448.     xmlns:tools="http://schemas.android.com/tools"
3449.     android:layout_width="match_parent"
3450.     android:layout_height="match_parent"
3451.     tools:context=".Welcome">
3452.     <TextView
3453.         android:id="@+id/mainword"
3454.         android:layout_width="fill_parent"
3455.         android:layout_height="fill_parent"
3456.         android:gravity="center"
3457.         android:textSize="22dp"
3458.         tools:ignore="MissingConstraints" />
3459. </androidx.constraintlayout.widget.ConstraintLayout>Toast.makeText(Register.this, "密码不一致！", Toast.LENGTH_LONG).show();                        //提示密码不一致
3460. <?xml version="1.0" encoding="utf-8"?>
3461. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3462.     xmlns:app="http://schemas.android.com/apk/res-auto"
3463.     xmlns:tools="http://schemas.android.com/tools"
3464.     android:layout_width="match_parent"
3465.     android:layout_height="match_parent"
3466.     tools:context=".Welcome">
3467.     <TextView
3468.         android:id="@+id/mainword"
3469.         android:layout_width="fill_parent"
3470.         android:layout_height="fill_parent"
3471.         android:gravity="center"
3472.         android:textSize="22dp"
3473.         tools:ignore="MissingConstraints" />
3474. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3475. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3476.     xmlns:app="http://schemas.android.com/apk/res-auto"
3477.     xmlns:tools="http://schemas.android.com/tools"
3478.     android:layout_width="match_parent"
3479.     android:layout_height="match_parent"
3480.     tools:context=".Welcome">
3481.     <TextView
3482.         android:id="@+id/mainword"
3483.         android:layout_width="fill_parent"
3484.         android:layout_height="fill_parent"
3485.         android:gravity="center"
3486.         android:textSize="22dp"
3487.         tools:ignore="MissingConstraints" />
3488. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3489. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3490.     xmlns:app="http://schemas.android.com/apk/res-auto"
3491.     xmlns:tools="http://schemas.android.com/tools"
3492.     android:layout_width="match_parent"
3493.     android:layout_height="match_parent"
3494.     tools:context=".Welcome">
3495.     <TextView
3496.         android:id="@+id/mainword"
3497.         android:layout_width="fill_parent"
3498.         android:layout_height="fill_parent"
3499.         android:gravity="center"
3500.         android:textSize="22dp"
3501.         tools:ignore="MissingConstraints" />
3502. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3503. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3504.     xmlns:app="http://schemas.android.com/apk/res-auto"
3505.     xmlns:tools="http://schemas.android.com/tools"
3506.     android:layout_width="match_parent"
3507.     android:layout_height="match_parent"
3508.     tools:context=".Welcome">
3509.     <TextView
3510.         android:id="@+id/mainword"
3511.         android:layout_width="fill_parent"
3512.         android:layout_height="fill_parent"
3513.         android:gravity="center"
3514.         android:textSize="22dp"
3515.         tools:ignore="MissingConstraints" />
3516. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3517. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3518.     xmlns:app="http://schemas.android.com/apk/res-auto"
3519.     xmlns:tools="http://schemas.android.com/tools"
3520.     android:layout_width="match_parent"
3521.     android:layout_height="match_parent"
3522.     tools:context=".Welcome">
3523.     <TextView
3524.         android:id="@+id/mainword"
3525.         android:layout_width="fill_parent"
3526.         android:layout_height="fill_parent"
3527.         android:gravity="center"
3528.         android:textSize="22dp"
3529.         tools:ignore="MissingConstraints" />
3530. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3531. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3532.     xmlns:app="http://schemas.android.com/apk/res-auto"
3533.     xmlns:tools="http://schemas.android.com/tools"
3534.     android:layout_width="match_parent"
3535.     android:layout_height="match_parent"
3536.     tools:context=".Welcome">
3537.     <TextView
3538.         android:id="@+id/mainword"
3539.         android:layout_width="fill_parent"
3540.         android:layout_height="fill_parent"
3541.         android:gravity="center"
3542.         android:textSize="22dp"
3543.         tools:ignore="MissingConstraints" />
3544. </androidx.constraintlayout.widget.ConstraintLayout>}
3545. <?xml version="1.0" encoding="utf-8"?>
3546. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3547.     xmlns:app="http://schemas.android.com/apk/res-auto"
3548.     xmlns:tools="http://schemas.android.com/tools"
3549.     android:layout_width="match_parent"
3550.     android:layout_height="match_parent"
3551.     tools:context=".Welcome">
3552.     <TextView
3553.         android:id="@+id/mainword"
3554.         android:layout_width="fill_parent"
3555.         android:layout_height="fill_parent"
3556.         android:gravity="center"
3557.         android:textSize="22dp"
3558.         tools:ignore="MissingConstraints" />
3559. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3560. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3561.     xmlns:app="http://schemas.android.com/apk/res-auto"
3562.     xmlns:tools="http://schemas.android.com/tools"
3563.     android:layout_width="match_parent"
3564.     android:layout_height="match_parent"
3565.     tools:context=".Welcome">
3566.     <TextView
3567.         android:id="@+id/mainword"
3568.         android:layout_width="fill_parent"
3569.         android:layout_height="fill_parent"
3570.         android:gravity="center"
3571.         android:textSize="22dp"
3572.         tools:ignore="MissingConstraints" />
3573. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3574. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3575.     xmlns:app="http://schemas.android.com/apk/res-auto"
3576.     xmlns:tools="http://schemas.android.com/tools"
3577.     android:layout_width="match_parent"
3578.     android:layout_height="match_parent"
3579.     tools:context=".Welcome">
3580.     <TextView
3581.         android:id="@+id/mainword"
3582.         android:layout_width="fill_parent"
3583.         android:layout_height="fill_parent"
3584.         android:gravity="center"
3585.         android:textSize="22dp"
3586.         tools:ignore="MissingConstraints" />
3587. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3588. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3589.     xmlns:app="http://schemas.android.com/apk/res-auto"
3590.     xmlns:tools="http://schemas.android.com/tools"
3591.     android:layout_width="match_parent"
3592.     android:layout_height="match_parent"
3593.     tools:context=".Welcome">
3594.     <TextView
3595.         android:id="@+id/mainword"
3596.         android:layout_width="fill_parent"
3597.         android:layout_height="fill_parent"
3598.         android:gravity="center"
3599.         android:textSize="22dp"
3600.         tools:ignore="MissingConstraints" />
3601. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3602. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3603.     xmlns:app="http://schemas.android.com/apk/res-auto"
3604.     xmlns:tools="http://schemas.android.com/tools"
3605.     android:layout_width="match_parent"
3606.     android:layout_height="match_parent"
3607.     tools:context=".Welcome">
3608.     <TextView
3609.         android:id="@+id/mainword"
3610.         android:layout_width="fill_parent"
3611.         android:layout_height="fill_parent"
3612.         android:gravity="center"
3613.         android:textSize="22dp"
3614.         tools:ignore="MissingConstraints" />
3615. </androidx.constraintlayout.widget.ConstraintLayout>}
3616. <?xml version="1.0" encoding="utf-8"?>
3617. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3618.     xmlns:app="http://schemas.android.com/apk/res-auto"
3619.     xmlns:tools="http://schemas.android.com/tools"
3620.     android:layout_width="match_parent"
3621.     android:layout_height="match_parent"
3622.     tools:context=".Welcome">
3623.     <TextView
3624.         android:id="@+id/mainword"
3625.         android:layout_width="fill_parent"
3626.         android:layout_height="fill_parent"
3627.         android:gravity="center"
3628.         android:textSize="22dp"
3629.         tools:ignore="MissingConstraints" />
3630. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3631. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3632.     xmlns:app="http://schemas.android.com/apk/res-auto"
3633.     xmlns:tools="http://schemas.android.com/tools"
3634.     android:layout_width="match_parent"
3635.     android:layout_height="match_parent"
3636.     tools:context=".Welcome">
3637.     <TextView
3638.         android:id="@+id/mainword"
3639.         android:layout_width="fill_parent"
3640.         android:layout_height="fill_parent"
3641.         android:gravity="center"
3642.         android:textSize="22dp"
3643.         tools:ignore="MissingConstraints" />
3644. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3645. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3646.     xmlns:app="http://schemas.android.com/apk/res-auto"
3647.     xmlns:tools="http://schemas.android.com/tools"
3648.     android:layout_width="match_parent"
3649.     android:layout_height="match_parent"
3650.     tools:context=".Welcome">
3651.     <TextView
3652.         android:id="@+id/mainword"
3653.         android:layout_width="fill_parent"
3654.         android:layout_height="fill_parent"
3655.         android:gravity="center"
3656.         android:textSize="22dp"
3657.         tools:ignore="MissingConstraints" />
3658. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3659. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3660.     xmlns:app="http://schemas.android.com/apk/res-auto"
3661.     xmlns:tools="http://schemas.android.com/tools"
3662.     android:layout_width="match_parent"
3663.     android:layout_height="match_parent"
3664.     tools:context=".Welcome">
3665.     <TextView
3666.         android:id="@+id/mainword"
3667.         android:layout_width="fill_parent"
3668.         android:layout_height="fill_parent"
3669.         android:gravity="center"
3670.         android:textSize="22dp"
3671.         tools:ignore="MissingConstraints" />
3672. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3673. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3674.     xmlns:app="http://schemas.android.com/apk/res-auto"
3675.     xmlns:tools="http://schemas.android.com/tools"
3676.     android:layout_width="match_parent"
3677.     android:layout_height="match_parent"
3678.     tools:context=".Welcome">
3679.     <TextView
3680.         android:id="@+id/mainword"
3681.         android:layout_width="fill_parent"
3682.         android:layout_height="fill_parent"
3683.         android:gravity="center"
3684.         android:textSize="22dp"
3685.         tools:ignore="MissingConstraints" />
3686. </androidx.constraintlayout.widget.ConstraintLayout>else{
3687. <?xml version="1.0" encoding="utf-8"?>
3688. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3689.     xmlns:app="http://schemas.android.com/apk/res-auto"
3690.     xmlns:tools="http://schemas.android.com/tools"
3691.     android:layout_width="match_parent"
3692.     android:layout_height="match_parent"
3693.     tools:context=".Welcome">
3694.     <TextView
3695.         android:id="@+id/mainword"
3696.         android:layout_width="fill_parent"
3697.         android:layout_height="fill_parent"
3698.         android:gravity="center"
3699.         android:textSize="22dp"
3700.         tools:ignore="MissingConstraints" />
3701. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3702. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3703.     xmlns:app="http://schemas.android.com/apk/res-auto"
3704.     xmlns:tools="http://schemas.android.com/tools"
3705.     android:layout_width="match_parent"
3706.     android:layout_height="match_parent"
3707.     tools:context=".Welcome">
3708.     <TextView
3709.         android:id="@+id/mainword"
3710.         android:layout_width="fill_parent"
3711.         android:layout_height="fill_parent"
3712.         android:gravity="center"
3713.         android:textSize="22dp"
3714.         tools:ignore="MissingConstraints" />
3715. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3716. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3717.     xmlns:app="http://schemas.android.com/apk/res-auto"
3718.     xmlns:tools="http://schemas.android.com/tools"
3719.     android:layout_width="match_parent"
3720.     android:layout_height="match_parent"
3721.     tools:context=".Welcome">
3722.     <TextView
3723.         android:id="@+id/mainword"
3724.         android:layout_width="fill_parent"
3725.         android:layout_height="fill_parent"
3726.         android:gravity="center"
3727.         android:textSize="22dp"
3728.         tools:ignore="MissingConstraints" />
3729. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3730. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3731.     xmlns:app="http://schemas.android.com/apk/res-auto"
3732.     xmlns:tools="http://schemas.android.com/tools"
3733.     android:layout_width="match_parent"
3734.     android:layout_height="match_parent"
3735.     tools:context=".Welcome">
3736.     <TextView
3737.         android:id="@+id/mainword"
3738.         android:layout_width="fill_parent"
3739.         android:layout_height="fill_parent"
3740.         android:gravity="center"
3741.         android:textSize="22dp"
3742.         tools:ignore="MissingConstraints" />
3743. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3744. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3745.     xmlns:app="http://schemas.android.com/apk/res-auto"
3746.     xmlns:tools="http://schemas.android.com/tools"
3747.     android:layout_width="match_parent"
3748.     android:layout_height="match_parent"
3749.     tools:context=".Welcome">
3750.     <TextView
3751.         android:id="@+id/mainword"
3752.         android:layout_width="fill_parent"
3753.         android:layout_height="fill_parent"
3754.         android:gravity="center"
3755.         android:textSize="22dp"
3756.         tools:ignore="MissingConstraints" />
3757. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3758. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3759.     xmlns:app="http://schemas.android.com/apk/res-auto"
3760.     xmlns:tools="http://schemas.android.com/tools"
3761.     android:layout_width="match_parent"
3762.     android:layout_height="match_parent"
3763.     tools:context=".Welcome">
3764.     <TextView
3765.         android:id="@+id/mainword"
3766.         android:layout_width="fill_parent"
3767.         android:layout_height="fill_parent"
3768.         android:gravity="center"
3769.         android:textSize="22dp"
3770.         tools:ignore="MissingConstraints" />
3771. </androidx.constraintlayout.widget.ConstraintLayout>Toast.makeText(Register.this, "用户已存在！", Toast.LENGTH_LONG).show();                        //提示密码不一致
3772. <?xml version="1.0" encoding="utf-8"?>
3773. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3774.     xmlns:app="http://schemas.android.com/apk/res-auto"
3775.     xmlns:tools="http://schemas.android.com/tools"
3776.     android:layout_width="match_parent"
3777.     android:layout_height="match_parent"
3778.     tools:context=".Welcome">
3779.     <TextView
3780.         android:id="@+id/mainword"
3781.         android:layout_width="fill_parent"
3782.         android:layout_height="fill_parent"
3783.         android:gravity="center"
3784.         android:textSize="22dp"
3785.         tools:ignore="MissingConstraints" />
3786. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3787. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3788.     xmlns:app="http://schemas.android.com/apk/res-auto"
3789.     xmlns:tools="http://schemas.android.com/tools"
3790.     android:layout_width="match_parent"
3791.     android:layout_height="match_parent"
3792.     tools:context=".Welcome">
3793.     <TextView
3794.         android:id="@+id/mainword"
3795.         android:layout_width="fill_parent"
3796.         android:layout_height="fill_parent"
3797.         android:gravity="center"
3798.         android:textSize="22dp"
3799.         tools:ignore="MissingConstraints" />
3800. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3801. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3802.     xmlns:app="http://schemas.android.com/apk/res-auto"
3803.     xmlns:tools="http://schemas.android.com/tools"
3804.     android:layout_width="match_parent"
3805.     android:layout_height="match_parent"
3806.     tools:context=".Welcome">
3807.     <TextView
3808.         android:id="@+id/mainword"
3809.         android:layout_width="fill_parent"
3810.         android:layout_height="fill_parent"
3811.         android:gravity="center"
3812.         android:textSize="22dp"
3813.         tools:ignore="MissingConstraints" />
3814. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3815. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3816.     xmlns:app="http://schemas.android.com/apk/res-auto"
3817.     xmlns:tools="http://schemas.android.com/tools"
3818.     android:layout_width="match_parent"
3819.     android:layout_height="match_parent"
3820.     tools:context=".Welcome">
3821.     <TextView
3822.         android:id="@+id/mainword"
3823.         android:layout_width="fill_parent"
3824.         android:layout_height="fill_parent"
3825.         android:gravity="center"
3826.         android:textSize="22dp"
3827.         tools:ignore="MissingConstraints" />
3828. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3829. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3830.     xmlns:app="http://schemas.android.com/apk/res-auto"
3831.     xmlns:tools="http://schemas.android.com/tools"
3832.     android:layout_width="match_parent"
3833.     android:layout_height="match_parent"
3834.     tools:context=".Welcome">
3835.     <TextView
3836.         android:id="@+id/mainword"
3837.         android:layout_width="fill_parent"
3838.         android:layout_height="fill_parent"
3839.         android:gravity="center"
3840.         android:textSize="22dp"
3841.         tools:ignore="MissingConstraints" />
3842. </androidx.constraintlayout.widget.ConstraintLayout>}
3844. <?xml version="1.0" encoding="utf-8"?>
3845. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3846.     xmlns:app="http://schemas.android.com/apk/res-auto"
3847.     xmlns:tools="http://schemas.android.com/tools"
3848.     android:layout_width="match_parent"
3849.     android:layout_height="match_parent"
3850.     tools:context=".Welcome">
3851.     <TextView
3852.         android:id="@+id/mainword"
3853.         android:layout_width="fill_parent"
3854.         android:layout_height="fill_parent"
3855.         android:gravity="center"
3856.         android:textSize="22dp"
3857.         tools:ignore="MissingConstraints" />
3858. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3859. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3860.     xmlns:app="http://schemas.android.com/apk/res-auto"
3861.     xmlns:tools="http://schemas.android.com/tools"
3862.     android:layout_width="match_parent"
3863.     android:layout_height="match_parent"
3864.     tools:context=".Welcome">
3865.     <TextView
3866.         android:id="@+id/mainword"
3867.         android:layout_width="fill_parent"
3868.         android:layout_height="fill_parent"
3869.         android:gravity="center"
3870.         android:textSize="22dp"
3871.         tools:ignore="MissingConstraints" />
3872. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3873. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3874.     xmlns:app="http://schemas.android.com/apk/res-auto"
3875.     xmlns:tools="http://schemas.android.com/tools"
3876.     android:layout_width="match_parent"
3877.     android:layout_height="match_parent"
3878.     tools:context=".Welcome">
3879.     <TextView
3880.         android:id="@+id/mainword"
3881.         android:layout_width="fill_parent"
3882.         android:layout_height="fill_parent"
3883.         android:gravity="center"
3884.         android:textSize="22dp"
3885.         tools:ignore="MissingConstraints" />
3886. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3887. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3888.     xmlns:app="http://schemas.android.com/apk/res-auto"
3889.     xmlns:tools="http://schemas.android.com/tools"
3890.     android:layout_width="match_parent"
3891.     android:layout_height="match_parent"
3892.     tools:context=".Welcome">
3893.     <TextView
3894.         android:id="@+id/mainword"
3895.         android:layout_width="fill_parent"
3896.         android:layout_height="fill_parent"
3897.         android:gravity="center"
3898.         android:textSize="22dp"
3899.         tools:ignore="MissingConstraints" />
3900. </androidx.constraintlayout.widget.ConstraintLayout>}
3901. <?xml version="1.0" encoding="utf-8"?>
3902. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3903.     xmlns:app="http://schemas.android.com/apk/res-auto"
3904.     xmlns:tools="http://schemas.android.com/tools"
3905.     android:layout_width="match_parent"
3906.     android:layout_height="match_parent"
3907.     tools:context=".Welcome">
3908.     <TextView
3909.         android:id="@+id/mainword"
3910.         android:layout_width="fill_parent"
3911.         android:layout_height="fill_parent"
3912.         android:gravity="center"
3913.         android:textSize="22dp"
3914.         tools:ignore="MissingConstraints" />
3915. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3916. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3917.     xmlns:app="http://schemas.android.com/apk/res-auto"
3918.     xmlns:tools="http://schemas.android.com/tools"
3919.     android:layout_width="match_parent"
3920.     android:layout_height="match_parent"
3921.     tools:context=".Welcome">
3922.     <TextView
3923.         android:id="@+id/mainword"
3924.         android:layout_width="fill_parent"
3925.         android:layout_height="fill_parent"
3926.         android:gravity="center"
3927.         android:textSize="22dp"
3928.         tools:ignore="MissingConstraints" />
3929. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3930. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3931.     xmlns:app="http://schemas.android.com/apk/res-auto"
3932.     xmlns:tools="http://schemas.android.com/tools"
3933.     android:layout_width="match_parent"
3934.     android:layout_height="match_parent"
3935.     tools:context=".Welcome">
3936.     <TextView
3937.         android:id="@+id/mainword"
3938.         android:layout_width="fill_parent"
3939.         android:layout_height="fill_parent"
3940.         android:gravity="center"
3941.         android:textSize="22dp"
3942.         tools:ignore="MissingConstraints" />
3943. </androidx.constraintlayout.widget.ConstraintLayout>}
3946. <?xml version="1.0" encoding="utf-8"?>
3947. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3948.     xmlns:app="http://schemas.android.com/apk/res-auto"
3949.     xmlns:tools="http://schemas.android.com/tools"
3950.     android:layout_width="match_parent"
3951.     android:layout_height="match_parent"
3952.     tools:context=".Welcome">
3953.     <TextView
3954.         android:id="@+id/mainword"
3955.         android:layout_width="fill_parent"
3956.         android:layout_height="fill_parent"
3957.         android:gravity="center"
3958.         android:textSize="22dp"
3959.         tools:ignore="MissingConstraints" />
3960. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
3961. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3962.     xmlns:app="http://schemas.android.com/apk/res-auto"
3963.     xmlns:tools="http://schemas.android.com/tools"
3964.     android:layout_width="match_parent"
3965.     android:layout_height="match_parent"
3966.     tools:context=".Welcome">
3967.     <TextView
3968.         android:id="@+id/mainword"
3969.         android:layout_width="fill_parent"
3970.         android:layout_height="fill_parent"
3971.         android:gravity="center"
3972.         android:textSize="22dp"
3973.         tools:ignore="MissingConstraints" />
3974. </androidx.constraintlayout.widget.ConstraintLayout>});
3975. <?xml version="1.0" encoding="utf-8"?>
3976. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3977.     xmlns:app="http://schemas.android.com/apk/res-auto"
3978.     xmlns:tools="http://schemas.android.com/tools"
3979.     android:layout_width="match_parent"
3980.     android:layout_height="match_parent"
3981.     tools:context=".Welcome">
3982.     <TextView
3983.         android:id="@+id/mainword"
3984.         android:layout_width="fill_parent"
3985.         android:layout_height="fill_parent"
3986.         android:gravity="center"
3987.         android:textSize="22dp"
3988.         tools:ignore="MissingConstraints" />
3989. </androidx.constraintlayout.widget.ConstraintLayout>}
3990. }

复制代码

这是对应的布局文件activity_register.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. <?xml version="1.0" encoding="utf-8"?>
4. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
5.     xmlns:app="http://schemas.android.com/apk/res-auto"
6.     xmlns:tools="http://schemas.android.com/tools"
7.     android:layout_width="match_parent"
8.     android:layout_height="match_parent"
9.     tools:context=".Welcome">
10.     <TextView
11.         android:id="@+id/mainword"
12.         android:layout_width="fill_parent"
13.         android:layout_height="fill_parent"
14.         android:gravity="center"
15.         android:textSize="22dp"
16.         tools:ignore="MissingConstraints" />
17. </androidx.constraintlayout.widget.ConstraintLayout>xmlns:app="http://schemas.android.com/apk/res-auto"
18. <?xml version="1.0" encoding="utf-8"?>
19. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
20.     xmlns:app="http://schemas.android.com/apk/res-auto"
21.     xmlns:tools="http://schemas.android.com/tools"
22.     android:layout_width="match_parent"
23.     android:layout_height="match_parent"
24.     tools:context=".Welcome">
25.     <TextView
26.         android:id="@+id/mainword"
27.         android:layout_width="fill_parent"
28.         android:layout_height="fill_parent"
29.         android:gravity="center"
30.         android:textSize="22dp"
31.         tools:ignore="MissingConstraints" />
32. </androidx.constraintlayout.widget.ConstraintLayout>xmlns:tools="http://schemas.android.com/tools"
33. <?xml version="1.0" encoding="utf-8"?>
34. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
35.     xmlns:app="http://schemas.android.com/apk/res-auto"
36.     xmlns:tools="http://schemas.android.com/tools"
37.     android:layout_width="match_parent"
38.     android:layout_height="match_parent"
39.     tools:context=".Welcome">
40.     <TextView
41.         android:id="@+id/mainword"
42.         android:layout_width="fill_parent"
43.         android:layout_height="fill_parent"
44.         android:gravity="center"
45.         android:textSize="22dp"
46.         tools:ignore="MissingConstraints" />
47. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="match_parent"
48. <?xml version="1.0" encoding="utf-8"?>
49. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
50.     xmlns:app="http://schemas.android.com/apk/res-auto"
51.     xmlns:tools="http://schemas.android.com/tools"
52.     android:layout_width="match_parent"
53.     android:layout_height="match_parent"
54.     tools:context=".Welcome">
55.     <TextView
56.         android:id="@+id/mainword"
57.         android:layout_width="fill_parent"
58.         android:layout_height="fill_parent"
59.         android:gravity="center"
60.         android:textSize="22dp"
61.         tools:ignore="MissingConstraints" />
62. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="match_parent"
63. <?xml version="1.0" encoding="utf-8"?>
64. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
65.     xmlns:app="http://schemas.android.com/apk/res-auto"
66.     xmlns:tools="http://schemas.android.com/tools"
67.     android:layout_width="match_parent"
68.     android:layout_height="match_parent"
69.     tools:context=".Welcome">
70.     <TextView
71.         android:id="@+id/mainword"
72.         android:layout_width="fill_parent"
73.         android:layout_height="fill_parent"
74.         android:gravity="center"
75.         android:textSize="22dp"
76.         tools:ignore="MissingConstraints" />
77. </androidx.constraintlayout.widget.ConstraintLayout>tools:context=".Register">
78. <?xml version="1.0" encoding="utf-8"?>
79. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
80.     xmlns:app="http://schemas.android.com/apk/res-auto"
81.     xmlns:tools="http://schemas.android.com/tools"
82.     android:layout_width="match_parent"
83.     android:layout_height="match_parent"
84.     tools:context=".Welcome">
85.     <TextView
86.         android:id="@+id/mainword"
87.         android:layout_width="fill_parent"
88.         android:layout_height="fill_parent"
89.         android:gravity="center"
90.         android:textSize="22dp"
91.         tools:ignore="MissingConstraints" />
92. </androidx.constraintlayout.widget.ConstraintLayout><LinearLayout
93. <?xml version="1.0" encoding="utf-8"?>
94. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
95.     xmlns:app="http://schemas.android.com/apk/res-auto"
96.     xmlns:tools="http://schemas.android.com/tools"
97.     android:layout_width="match_parent"
98.     android:layout_height="match_parent"
99.     tools:context=".Welcome">
100.     <TextView
101.         android:id="@+id/mainword"
102.         android:layout_width="fill_parent"
103.         android:layout_height="fill_parent"
104.         android:gravity="center"
105.         android:textSize="22dp"
106.         tools:ignore="MissingConstraints" />
107. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
108. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
109.     xmlns:app="http://schemas.android.com/apk/res-auto"
110.     xmlns:tools="http://schemas.android.com/tools"
111.     android:layout_width="match_parent"
112.     android:layout_height="match_parent"
113.     tools:context=".Welcome">
114.     <TextView
115.         android:id="@+id/mainword"
116.         android:layout_width="fill_parent"
117.         android:layout_height="fill_parent"
118.         android:gravity="center"
119.         android:textSize="22dp"
120.         tools:ignore="MissingConstraints" />
121. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="match_parent"
122. <?xml version="1.0" encoding="utf-8"?>
123. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
124.     xmlns:app="http://schemas.android.com/apk/res-auto"
125.     xmlns:tools="http://schemas.android.com/tools"
126.     android:layout_width="match_parent"
127.     android:layout_height="match_parent"
128.     tools:context=".Welcome">
129.     <TextView
130.         android:id="@+id/mainword"
131.         android:layout_width="fill_parent"
132.         android:layout_height="fill_parent"
133.         android:gravity="center"
134.         android:textSize="22dp"
135.         tools:ignore="MissingConstraints" />
136. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
137. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
138.     xmlns:app="http://schemas.android.com/apk/res-auto"
139.     xmlns:tools="http://schemas.android.com/tools"
140.     android:layout_width="match_parent"
141.     android:layout_height="match_parent"
142.     tools:context=".Welcome">
143.     <TextView
144.         android:id="@+id/mainword"
145.         android:layout_width="fill_parent"
146.         android:layout_height="fill_parent"
147.         android:gravity="center"
148.         android:textSize="22dp"
149.         tools:ignore="MissingConstraints" />
150. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="match_parent"
151. <?xml version="1.0" encoding="utf-8"?>
152. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
153.     xmlns:app="http://schemas.android.com/apk/res-auto"
154.     xmlns:tools="http://schemas.android.com/tools"
155.     android:layout_width="match_parent"
156.     android:layout_height="match_parent"
157.     tools:context=".Welcome">
158.     <TextView
159.         android:id="@+id/mainword"
160.         android:layout_width="fill_parent"
161.         android:layout_height="fill_parent"
162.         android:gravity="center"
163.         android:textSize="22dp"
164.         tools:ignore="MissingConstraints" />
165. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
166. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
167.     xmlns:app="http://schemas.android.com/apk/res-auto"
168.     xmlns:tools="http://schemas.android.com/tools"
169.     android:layout_width="match_parent"
170.     android:layout_height="match_parent"
171.     tools:context=".Welcome">
172.     <TextView
173.         android:id="@+id/mainword"
174.         android:layout_width="fill_parent"
175.         android:layout_height="fill_parent"
176.         android:gravity="center"
177.         android:textSize="22dp"
178.         tools:ignore="MissingConstraints" />
179. </androidx.constraintlayout.widget.ConstraintLayout>android:orientation="vertical">
180. <?xml version="1.0" encoding="utf-8"?>
181. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
182.     xmlns:app="http://schemas.android.com/apk/res-auto"
183.     xmlns:tools="http://schemas.android.com/tools"
184.     android:layout_width="match_parent"
185.     android:layout_height="match_parent"
186.     tools:context=".Welcome">
187.     <TextView
188.         android:id="@+id/mainword"
189.         android:layout_width="fill_parent"
190.         android:layout_height="fill_parent"
191.         android:gravity="center"
192.         android:textSize="22dp"
193.         tools:ignore="MissingConstraints" />
194. </androidx.constraintlayout.widget.ConstraintLayout>
195. <?xml version="1.0" encoding="utf-8"?>
196. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
197.     xmlns:app="http://schemas.android.com/apk/res-auto"
198.     xmlns:tools="http://schemas.android.com/tools"
199.     android:layout_width="match_parent"
200.     android:layout_height="match_parent"
201.     tools:context=".Welcome">
202.     <TextView
203.         android:id="@+id/mainword"
204.         android:layout_width="fill_parent"
205.         android:layout_height="fill_parent"
206.         android:gravity="center"
207.         android:textSize="22dp"
208.         tools:ignore="MissingConstraints" />
209. </androidx.constraintlayout.widget.ConstraintLayout><TextView
210. <?xml version="1.0" encoding="utf-8"?>
211. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
212.     xmlns:app="http://schemas.android.com/apk/res-auto"
213.     xmlns:tools="http://schemas.android.com/tools"
214.     android:layout_width="match_parent"
215.     android:layout_height="match_parent"
216.     tools:context=".Welcome">
217.     <TextView
218.         android:id="@+id/mainword"
219.         android:layout_width="fill_parent"
220.         android:layout_height="fill_parent"
221.         android:gravity="center"
222.         android:textSize="22dp"
223.         tools:ignore="MissingConstraints" />
224. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
225. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
226.     xmlns:app="http://schemas.android.com/apk/res-auto"
227.     xmlns:tools="http://schemas.android.com/tools"
228.     android:layout_width="match_parent"
229.     android:layout_height="match_parent"
230.     tools:context=".Welcome">
231.     <TextView
232.         android:id="@+id/mainword"
233.         android:layout_width="fill_parent"
234.         android:layout_height="fill_parent"
235.         android:gravity="center"
236.         android:textSize="22dp"
237.         tools:ignore="MissingConstraints" />
238. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="fill_parent"
239. <?xml version="1.0" encoding="utf-8"?>
240. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
241.     xmlns:app="http://schemas.android.com/apk/res-auto"
242.     xmlns:tools="http://schemas.android.com/tools"
243.     android:layout_width="match_parent"
244.     android:layout_height="match_parent"
245.     tools:context=".Welcome">
246.     <TextView
247.         android:id="@+id/mainword"
248.         android:layout_width="fill_parent"
249.         android:layout_height="fill_parent"
250.         android:gravity="center"
251.         android:textSize="22dp"
252.         tools:ignore="MissingConstraints" />
253. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
254. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
255.     xmlns:app="http://schemas.android.com/apk/res-auto"
256.     xmlns:tools="http://schemas.android.com/tools"
257.     android:layout_width="match_parent"
258.     android:layout_height="match_parent"
259.     tools:context=".Welcome">
260.     <TextView
261.         android:id="@+id/mainword"
262.         android:layout_width="fill_parent"
263.         android:layout_height="fill_parent"
264.         android:gravity="center"
265.         android:textSize="22dp"
266.         tools:ignore="MissingConstraints" />
267. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
268. <?xml version="1.0" encoding="utf-8"?>
269. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
270.     xmlns:app="http://schemas.android.com/apk/res-auto"
271.     xmlns:tools="http://schemas.android.com/tools"
272.     android:layout_width="match_parent"
273.     android:layout_height="match_parent"
274.     tools:context=".Welcome">
275.     <TextView
276.         android:id="@+id/mainword"
277.         android:layout_width="fill_parent"
278.         android:layout_height="fill_parent"
279.         android:gravity="center"
280.         android:textSize="22dp"
281.         tools:ignore="MissingConstraints" />
282. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
283. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
284.     xmlns:app="http://schemas.android.com/apk/res-auto"
285.     xmlns:tools="http://schemas.android.com/tools"
286.     android:layout_width="match_parent"
287.     android:layout_height="match_parent"
288.     tools:context=".Welcome">
289.     <TextView
290.         android:id="@+id/mainword"
291.         android:layout_width="fill_parent"
292.         android:layout_height="fill_parent"
293.         android:gravity="center"
294.         android:textSize="22dp"
295.         tools:ignore="MissingConstraints" />
296. </androidx.constraintlayout.widget.ConstraintLayout>android:text="用户名:" />
298. <?xml version="1.0" encoding="utf-8"?>
299. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
300.     xmlns:app="http://schemas.android.com/apk/res-auto"
301.     xmlns:tools="http://schemas.android.com/tools"
302.     android:layout_width="match_parent"
303.     android:layout_height="match_parent"
304.     tools:context=".Welcome">
305.     <TextView
306.         android:id="@+id/mainword"
307.         android:layout_width="fill_parent"
308.         android:layout_height="fill_parent"
309.         android:gravity="center"
310.         android:textSize="22dp"
311.         tools:ignore="MissingConstraints" />
312. </androidx.constraintlayout.widget.ConstraintLayout><EditText
313. <?xml version="1.0" encoding="utf-8"?>
314. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
315.     xmlns:app="http://schemas.android.com/apk/res-auto"
316.     xmlns:tools="http://schemas.android.com/tools"
317.     android:layout_width="match_parent"
318.     android:layout_height="match_parent"
319.     tools:context=".Welcome">
320.     <TextView
321.         android:id="@+id/mainword"
322.         android:layout_width="fill_parent"
323.         android:layout_height="fill_parent"
324.         android:gravity="center"
325.         android:textSize="22dp"
326.         tools:ignore="MissingConstraints" />
327. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
328. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
329.     xmlns:app="http://schemas.android.com/apk/res-auto"
330.     xmlns:tools="http://schemas.android.com/tools"
331.     android:layout_width="match_parent"
332.     android:layout_height="match_parent"
333.     tools:context=".Welcome">
334.     <TextView
335.         android:id="@+id/mainword"
336.         android:layout_width="fill_parent"
337.         android:layout_height="fill_parent"
338.         android:gravity="center"
339.         android:textSize="22dp"
340.         tools:ignore="MissingConstraints" />
341. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/usename"
342. <?xml version="1.0" encoding="utf-8"?>
343. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
344.     xmlns:app="http://schemas.android.com/apk/res-auto"
345.     xmlns:tools="http://schemas.android.com/tools"
346.     android:layout_width="match_parent"
347.     android:layout_height="match_parent"
348.     tools:context=".Welcome">
349.     <TextView
350.         android:id="@+id/mainword"
351.         android:layout_width="fill_parent"
352.         android:layout_height="fill_parent"
353.         android:gravity="center"
354.         android:textSize="22dp"
355.         tools:ignore="MissingConstraints" />
356. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
357. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
358.     xmlns:app="http://schemas.android.com/apk/res-auto"
359.     xmlns:tools="http://schemas.android.com/tools"
360.     android:layout_width="match_parent"
361.     android:layout_height="match_parent"
362.     tools:context=".Welcome">
363.     <TextView
364.         android:id="@+id/mainword"
365.         android:layout_width="fill_parent"
366.         android:layout_height="fill_parent"
367.         android:gravity="center"
368.         android:textSize="22dp"
369.         tools:ignore="MissingConstraints" />
370. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="fill_parent"
371. <?xml version="1.0" encoding="utf-8"?>
372. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
373.     xmlns:app="http://schemas.android.com/apk/res-auto"
374.     xmlns:tools="http://schemas.android.com/tools"
375.     android:layout_width="match_parent"
376.     android:layout_height="match_parent"
377.     tools:context=".Welcome">
378.     <TextView
379.         android:id="@+id/mainword"
380.         android:layout_width="fill_parent"
381.         android:layout_height="fill_parent"
382.         android:gravity="center"
383.         android:textSize="22dp"
384.         tools:ignore="MissingConstraints" />
385. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
386. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
387.     xmlns:app="http://schemas.android.com/apk/res-auto"
388.     xmlns:tools="http://schemas.android.com/tools"
389.     android:layout_width="match_parent"
390.     android:layout_height="match_parent"
391.     tools:context=".Welcome">
392.     <TextView
393.         android:id="@+id/mainword"
394.         android:layout_width="fill_parent"
395.         android:layout_height="fill_parent"
396.         android:gravity="center"
397.         android:textSize="22dp"
398.         tools:ignore="MissingConstraints" />
399. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
400. <?xml version="1.0" encoding="utf-8"?>
401. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
402.     xmlns:app="http://schemas.android.com/apk/res-auto"
403.     xmlns:tools="http://schemas.android.com/tools"
404.     android:layout_width="match_parent"
405.     android:layout_height="match_parent"
406.     tools:context=".Welcome">
407.     <TextView
408.         android:id="@+id/mainword"
409.         android:layout_width="fill_parent"
410.         android:layout_height="fill_parent"
411.         android:gravity="center"
412.         android:textSize="22dp"
413.         tools:ignore="MissingConstraints" />
414. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
415. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
416.     xmlns:app="http://schemas.android.com/apk/res-auto"
417.     xmlns:tools="http://schemas.android.com/tools"
418.     android:layout_width="match_parent"
419.     android:layout_height="match_parent"
420.     tools:context=".Welcome">
421.     <TextView
422.         android:id="@+id/mainword"
423.         android:layout_width="fill_parent"
424.         android:layout_height="fill_parent"
425.         android:gravity="center"
426.         android:textSize="22dp"
427.         tools:ignore="MissingConstraints" />
428. </androidx.constraintlayout.widget.ConstraintLayout>android:text=""
429. <?xml version="1.0" encoding="utf-8"?>
430. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
431.     xmlns:app="http://schemas.android.com/apk/res-auto"
432.     xmlns:tools="http://schemas.android.com/tools"
433.     android:layout_width="match_parent"
434.     android:layout_height="match_parent"
435.     tools:context=".Welcome">
436.     <TextView
437.         android:id="@+id/mainword"
438.         android:layout_width="fill_parent"
439.         android:layout_height="fill_parent"
440.         android:gravity="center"
441.         android:textSize="22dp"
442.         tools:ignore="MissingConstraints" />
443. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
444. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
445.     xmlns:app="http://schemas.android.com/apk/res-auto"
446.     xmlns:tools="http://schemas.android.com/tools"
447.     android:layout_width="match_parent"
448.     android:layout_height="match_parent"
449.     tools:context=".Welcome">
450.     <TextView
451.         android:id="@+id/mainword"
452.         android:layout_width="fill_parent"
453.         android:layout_height="fill_parent"
454.         android:gravity="center"
455.         android:textSize="22dp"
456.         tools:ignore="MissingConstraints" />
457. </androidx.constraintlayout.widget.ConstraintLayout>/>
458. <?xml version="1.0" encoding="utf-8"?>
459. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
460.     xmlns:app="http://schemas.android.com/apk/res-auto"
461.     xmlns:tools="http://schemas.android.com/tools"
462.     android:layout_width="match_parent"
463.     android:layout_height="match_parent"
464.     tools:context=".Welcome">
465.     <TextView
466.         android:id="@+id/mainword"
467.         android:layout_width="fill_parent"
468.         android:layout_height="fill_parent"
469.         android:gravity="center"
470.         android:textSize="22dp"
471.         tools:ignore="MissingConstraints" />
472. </androidx.constraintlayout.widget.ConstraintLayout>
473. <?xml version="1.0" encoding="utf-8"?>
474. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
475.     xmlns:app="http://schemas.android.com/apk/res-auto"
476.     xmlns:tools="http://schemas.android.com/tools"
477.     android:layout_width="match_parent"
478.     android:layout_height="match_parent"
479.     tools:context=".Welcome">
480.     <TextView
481.         android:id="@+id/mainword"
482.         android:layout_width="fill_parent"
483.         android:layout_height="fill_parent"
484.         android:gravity="center"
485.         android:textSize="22dp"
486.         tools:ignore="MissingConstraints" />
487. </androidx.constraintlayout.widget.ConstraintLayout><TextView
488. <?xml version="1.0" encoding="utf-8"?>
489. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
490.     xmlns:app="http://schemas.android.com/apk/res-auto"
491.     xmlns:tools="http://schemas.android.com/tools"
492.     android:layout_width="match_parent"
493.     android:layout_height="match_parent"
494.     tools:context=".Welcome">
495.     <TextView
496.         android:id="@+id/mainword"
497.         android:layout_width="fill_parent"
498.         android:layout_height="fill_parent"
499.         android:gravity="center"
500.         android:textSize="22dp"
501.         tools:ignore="MissingConstraints" />
502. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
503. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
504.     xmlns:app="http://schemas.android.com/apk/res-auto"
505.     xmlns:tools="http://schemas.android.com/tools"
506.     android:layout_width="match_parent"
507.     android:layout_height="match_parent"
508.     tools:context=".Welcome">
509.     <TextView
510.         android:id="@+id/mainword"
511.         android:layout_width="fill_parent"
512.         android:layout_height="fill_parent"
513.         android:gravity="center"
514.         android:textSize="22dp"
515.         tools:ignore="MissingConstraints" />
516. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="fill_parent"
517. <?xml version="1.0" encoding="utf-8"?>
518. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
519.     xmlns:app="http://schemas.android.com/apk/res-auto"
520.     xmlns:tools="http://schemas.android.com/tools"
521.     android:layout_width="match_parent"
522.     android:layout_height="match_parent"
523.     tools:context=".Welcome">
524.     <TextView
525.         android:id="@+id/mainword"
526.         android:layout_width="fill_parent"
527.         android:layout_height="fill_parent"
528.         android:gravity="center"
529.         android:textSize="22dp"
530.         tools:ignore="MissingConstraints" />
531. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
532. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
533.     xmlns:app="http://schemas.android.com/apk/res-auto"
534.     xmlns:tools="http://schemas.android.com/tools"
535.     android:layout_width="match_parent"
536.     android:layout_height="match_parent"
537.     tools:context=".Welcome">
538.     <TextView
539.         android:id="@+id/mainword"
540.         android:layout_width="fill_parent"
541.         android:layout_height="fill_parent"
542.         android:gravity="center"
543.         android:textSize="22dp"
544.         tools:ignore="MissingConstraints" />
545. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
546. <?xml version="1.0" encoding="utf-8"?>
547. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
548.     xmlns:app="http://schemas.android.com/apk/res-auto"
549.     xmlns:tools="http://schemas.android.com/tools"
550.     android:layout_width="match_parent"
551.     android:layout_height="match_parent"
552.     tools:context=".Welcome">
553.     <TextView
554.         android:id="@+id/mainword"
555.         android:layout_width="fill_parent"
556.         android:layout_height="fill_parent"
557.         android:gravity="center"
558.         android:textSize="22dp"
559.         tools:ignore="MissingConstraints" />
560. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
561. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
562.     xmlns:app="http://schemas.android.com/apk/res-auto"
563.     xmlns:tools="http://schemas.android.com/tools"
564.     android:layout_width="match_parent"
565.     android:layout_height="match_parent"
566.     tools:context=".Welcome">
567.     <TextView
568.         android:id="@+id/mainword"
569.         android:layout_width="fill_parent"
570.         android:layout_height="fill_parent"
571.         android:gravity="center"
572.         android:textSize="22dp"
573.         tools:ignore="MissingConstraints" />
574. </androidx.constraintlayout.widget.ConstraintLayout>android:text="密 码:"
575. <?xml version="1.0" encoding="utf-8"?>
576. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
577.     xmlns:app="http://schemas.android.com/apk/res-auto"
578.     xmlns:tools="http://schemas.android.com/tools"
579.     android:layout_width="match_parent"
580.     android:layout_height="match_parent"
581.     tools:context=".Welcome">
582.     <TextView
583.         android:id="@+id/mainword"
584.         android:layout_width="fill_parent"
585.         android:layout_height="fill_parent"
586.         android:gravity="center"
587.         android:textSize="22dp"
588.         tools:ignore="MissingConstraints" />
589. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
590. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
591.     xmlns:app="http://schemas.android.com/apk/res-auto"
592.     xmlns:tools="http://schemas.android.com/tools"
593.     android:layout_width="match_parent"
594.     android:layout_height="match_parent"
595.     tools:context=".Welcome">
596.     <TextView
597.         android:id="@+id/mainword"
598.         android:layout_width="fill_parent"
599.         android:layout_height="fill_parent"
600.         android:gravity="center"
601.         android:textSize="22dp"
602.         tools:ignore="MissingConstraints" />
603. </androidx.constraintlayout.widget.ConstraintLayout>/>
605. <?xml version="1.0" encoding="utf-8"?>
606. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
607.     xmlns:app="http://schemas.android.com/apk/res-auto"
608.     xmlns:tools="http://schemas.android.com/tools"
609.     android:layout_width="match_parent"
610.     android:layout_height="match_parent"
611.     tools:context=".Welcome">
612.     <TextView
613.         android:id="@+id/mainword"
614.         android:layout_width="fill_parent"
615.         android:layout_height="fill_parent"
616.         android:gravity="center"
617.         android:textSize="22dp"
618.         tools:ignore="MissingConstraints" />
619. </androidx.constraintlayout.widget.ConstraintLayout><EditText
620. <?xml version="1.0" encoding="utf-8"?>
621. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
622.     xmlns:app="http://schemas.android.com/apk/res-auto"
623.     xmlns:tools="http://schemas.android.com/tools"
624.     android:layout_width="match_parent"
625.     android:layout_height="match_parent"
626.     tools:context=".Welcome">
627.     <TextView
628.         android:id="@+id/mainword"
629.         android:layout_width="fill_parent"
630.         android:layout_height="fill_parent"
631.         android:gravity="center"
632.         android:textSize="22dp"
633.         tools:ignore="MissingConstraints" />
634. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
635. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
636.     xmlns:app="http://schemas.android.com/apk/res-auto"
637.     xmlns:tools="http://schemas.android.com/tools"
638.     android:layout_width="match_parent"
639.     android:layout_height="match_parent"
640.     tools:context=".Welcome">
641.     <TextView
642.         android:id="@+id/mainword"
643.         android:layout_width="fill_parent"
644.         android:layout_height="fill_parent"
645.         android:gravity="center"
646.         android:textSize="22dp"
647.         tools:ignore="MissingConstraints" />
648. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/usepwd"
649. <?xml version="1.0" encoding="utf-8"?>
650. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
651.     xmlns:app="http://schemas.android.com/apk/res-auto"
652.     xmlns:tools="http://schemas.android.com/tools"
653.     android:layout_width="match_parent"
654.     android:layout_height="match_parent"
655.     tools:context=".Welcome">
656.     <TextView
657.         android:id="@+id/mainword"
658.         android:layout_width="fill_parent"
659.         android:layout_height="fill_parent"
660.         android:gravity="center"
661.         android:textSize="22dp"
662.         tools:ignore="MissingConstraints" />
663. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
664. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
665.     xmlns:app="http://schemas.android.com/apk/res-auto"
666.     xmlns:tools="http://schemas.android.com/tools"
667.     android:layout_width="match_parent"
668.     android:layout_height="match_parent"
669.     tools:context=".Welcome">
670.     <TextView
671.         android:id="@+id/mainword"
672.         android:layout_width="fill_parent"
673.         android:layout_height="fill_parent"
674.         android:gravity="center"
675.         android:textSize="22dp"
676.         tools:ignore="MissingConstraints" />
677. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="fill_parent"
678. <?xml version="1.0" encoding="utf-8"?>
679. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
680.     xmlns:app="http://schemas.android.com/apk/res-auto"
681.     xmlns:tools="http://schemas.android.com/tools"
682.     android:layout_width="match_parent"
683.     android:layout_height="match_parent"
684.     tools:context=".Welcome">
685.     <TextView
686.         android:id="@+id/mainword"
687.         android:layout_width="fill_parent"
688.         android:layout_height="fill_parent"
689.         android:gravity="center"
690.         android:textSize="22dp"
691.         tools:ignore="MissingConstraints" />
692. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
693. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
694.     xmlns:app="http://schemas.android.com/apk/res-auto"
695.     xmlns:tools="http://schemas.android.com/tools"
696.     android:layout_width="match_parent"
697.     android:layout_height="match_parent"
698.     tools:context=".Welcome">
699.     <TextView
700.         android:id="@+id/mainword"
701.         android:layout_width="fill_parent"
702.         android:layout_height="fill_parent"
703.         android:gravity="center"
704.         android:textSize="22dp"
705.         tools:ignore="MissingConstraints" />
706. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
707. <?xml version="1.0" encoding="utf-8"?>
708. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
709.     xmlns:app="http://schemas.android.com/apk/res-auto"
710.     xmlns:tools="http://schemas.android.com/tools"
711.     android:layout_width="match_parent"
712.     android:layout_height="match_parent"
713.     tools:context=".Welcome">
714.     <TextView
715.         android:id="@+id/mainword"
716.         android:layout_width="fill_parent"
717.         android:layout_height="fill_parent"
718.         android:gravity="center"
719.         android:textSize="22dp"
720.         tools:ignore="MissingConstraints" />
721. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
722. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
723.     xmlns:app="http://schemas.android.com/apk/res-auto"
724.     xmlns:tools="http://schemas.android.com/tools"
725.     android:layout_width="match_parent"
726.     android:layout_height="match_parent"
727.     tools:context=".Welcome">
728.     <TextView
729.         android:id="@+id/mainword"
730.         android:layout_width="fill_parent"
731.         android:layout_height="fill_parent"
732.         android:gravity="center"
733.         android:textSize="22dp"
734.         tools:ignore="MissingConstraints" />
735. </androidx.constraintlayout.widget.ConstraintLayout>android:inputType="textPassword"
737. <?xml version="1.0" encoding="utf-8"?>
738. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
739.     xmlns:app="http://schemas.android.com/apk/res-auto"
740.     xmlns:tools="http://schemas.android.com/tools"
741.     android:layout_width="match_parent"
742.     android:layout_height="match_parent"
743.     tools:context=".Welcome">
744.     <TextView
745.         android:id="@+id/mainword"
746.         android:layout_width="fill_parent"
747.         android:layout_height="fill_parent"
748.         android:gravity="center"
749.         android:textSize="22dp"
750.         tools:ignore="MissingConstraints" />
751. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
752. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
753.     xmlns:app="http://schemas.android.com/apk/res-auto"
754.     xmlns:tools="http://schemas.android.com/tools"
755.     android:layout_width="match_parent"
756.     android:layout_height="match_parent"
757.     tools:context=".Welcome">
758.     <TextView
759.         android:id="@+id/mainword"
760.         android:layout_width="fill_parent"
761.         android:layout_height="fill_parent"
762.         android:gravity="center"
763.         android:textSize="22dp"
764.         tools:ignore="MissingConstraints" />
765. </androidx.constraintlayout.widget.ConstraintLayout>/>
766. <?xml version="1.0" encoding="utf-8"?>
767. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
768.     xmlns:app="http://schemas.android.com/apk/res-auto"
769.     xmlns:tools="http://schemas.android.com/tools"
770.     android:layout_width="match_parent"
771.     android:layout_height="match_parent"
772.     tools:context=".Welcome">
773.     <TextView
774.         android:id="@+id/mainword"
775.         android:layout_width="fill_parent"
776.         android:layout_height="fill_parent"
777.         android:gravity="center"
778.         android:textSize="22dp"
779.         tools:ignore="MissingConstraints" />
780. </androidx.constraintlayout.widget.ConstraintLayout>
781. <?xml version="1.0" encoding="utf-8"?>
782. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
783.     xmlns:app="http://schemas.android.com/apk/res-auto"
784.     xmlns:tools="http://schemas.android.com/tools"
785.     android:layout_width="match_parent"
786.     android:layout_height="match_parent"
787.     tools:context=".Welcome">
788.     <TextView
789.         android:id="@+id/mainword"
790.         android:layout_width="fill_parent"
791.         android:layout_height="fill_parent"
792.         android:gravity="center"
793.         android:textSize="22dp"
794.         tools:ignore="MissingConstraints" />
795. </androidx.constraintlayout.widget.ConstraintLayout><TextView
796. <?xml version="1.0" encoding="utf-8"?>
797. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
798.     xmlns:app="http://schemas.android.com/apk/res-auto"
799.     xmlns:tools="http://schemas.android.com/tools"
800.     android:layout_width="match_parent"
801.     android:layout_height="match_parent"
802.     tools:context=".Welcome">
803.     <TextView
804.         android:id="@+id/mainword"
805.         android:layout_width="fill_parent"
806.         android:layout_height="fill_parent"
807.         android:gravity="center"
808.         android:textSize="22dp"
809.         tools:ignore="MissingConstraints" />
810. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
811. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
812.     xmlns:app="http://schemas.android.com/apk/res-auto"
813.     xmlns:tools="http://schemas.android.com/tools"
814.     android:layout_width="match_parent"
815.     android:layout_height="match_parent"
816.     tools:context=".Welcome">
817.     <TextView
818.         android:id="@+id/mainword"
819.         android:layout_width="fill_parent"
820.         android:layout_height="fill_parent"
821.         android:gravity="center"
822.         android:textSize="22dp"
823.         tools:ignore="MissingConstraints" />
824. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="fill_parent"
825. <?xml version="1.0" encoding="utf-8"?>
826. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
827.     xmlns:app="http://schemas.android.com/apk/res-auto"
828.     xmlns:tools="http://schemas.android.com/tools"
829.     android:layout_width="match_parent"
830.     android:layout_height="match_parent"
831.     tools:context=".Welcome">
832.     <TextView
833.         android:id="@+id/mainword"
834.         android:layout_width="fill_parent"
835.         android:layout_height="fill_parent"
836.         android:gravity="center"
837.         android:textSize="22dp"
838.         tools:ignore="MissingConstraints" />
839. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
840. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
841.     xmlns:app="http://schemas.android.com/apk/res-auto"
842.     xmlns:tools="http://schemas.android.com/tools"
843.     android:layout_width="match_parent"
844.     android:layout_height="match_parent"
845.     tools:context=".Welcome">
846.     <TextView
847.         android:id="@+id/mainword"
848.         android:layout_width="fill_parent"
849.         android:layout_height="fill_parent"
850.         android:gravity="center"
851.         android:textSize="22dp"
852.         tools:ignore="MissingConstraints" />
853. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
854. <?xml version="1.0" encoding="utf-8"?>
855. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
856.     xmlns:app="http://schemas.android.com/apk/res-auto"
857.     xmlns:tools="http://schemas.android.com/tools"
858.     android:layout_width="match_parent"
859.     android:layout_height="match_parent"
860.     tools:context=".Welcome">
861.     <TextView
862.         android:id="@+id/mainword"
863.         android:layout_width="fill_parent"
864.         android:layout_height="fill_parent"
865.         android:gravity="center"
866.         android:textSize="22dp"
867.         tools:ignore="MissingConstraints" />
868. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
869. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
870.     xmlns:app="http://schemas.android.com/apk/res-auto"
871.     xmlns:tools="http://schemas.android.com/tools"
872.     android:layout_width="match_parent"
873.     android:layout_height="match_parent"
874.     tools:context=".Welcome">
875.     <TextView
876.         android:id="@+id/mainword"
877.         android:layout_width="fill_parent"
878.         android:layout_height="fill_parent"
879.         android:gravity="center"
880.         android:textSize="22dp"
881.         tools:ignore="MissingConstraints" />
882. </androidx.constraintlayout.widget.ConstraintLayout>android:text="确认密码:"
883. <?xml version="1.0" encoding="utf-8"?>
884. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
885.     xmlns:app="http://schemas.android.com/apk/res-auto"
886.     xmlns:tools="http://schemas.android.com/tools"
887.     android:layout_width="match_parent"
888.     android:layout_height="match_parent"
889.     tools:context=".Welcome">
890.     <TextView
891.         android:id="@+id/mainword"
892.         android:layout_width="fill_parent"
893.         android:layout_height="fill_parent"
894.         android:gravity="center"
895.         android:textSize="22dp"
896.         tools:ignore="MissingConstraints" />
897. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
898. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
899.     xmlns:app="http://schemas.android.com/apk/res-auto"
900.     xmlns:tools="http://schemas.android.com/tools"
901.     android:layout_width="match_parent"
902.     android:layout_height="match_parent"
903.     tools:context=".Welcome">
904.     <TextView
905.         android:id="@+id/mainword"
906.         android:layout_width="fill_parent"
907.         android:layout_height="fill_parent"
908.         android:gravity="center"
909.         android:textSize="22dp"
910.         tools:ignore="MissingConstraints" />
911. </androidx.constraintlayout.widget.ConstraintLayout>/>
913. <?xml version="1.0" encoding="utf-8"?>
914. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
915.     xmlns:app="http://schemas.android.com/apk/res-auto"
916.     xmlns:tools="http://schemas.android.com/tools"
917.     android:layout_width="match_parent"
918.     android:layout_height="match_parent"
919.     tools:context=".Welcome">
920.     <TextView
921.         android:id="@+id/mainword"
922.         android:layout_width="fill_parent"
923.         android:layout_height="fill_parent"
924.         android:gravity="center"
925.         android:textSize="22dp"
926.         tools:ignore="MissingConstraints" />
927. </androidx.constraintlayout.widget.ConstraintLayout><EditText
928. <?xml version="1.0" encoding="utf-8"?>
929. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
930.     xmlns:app="http://schemas.android.com/apk/res-auto"
931.     xmlns:tools="http://schemas.android.com/tools"
932.     android:layout_width="match_parent"
933.     android:layout_height="match_parent"
934.     tools:context=".Welcome">
935.     <TextView
936.         android:id="@+id/mainword"
937.         android:layout_width="fill_parent"
938.         android:layout_height="fill_parent"
939.         android:gravity="center"
940.         android:textSize="22dp"
941.         tools:ignore="MissingConstraints" />
942. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
943. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
944.     xmlns:app="http://schemas.android.com/apk/res-auto"
945.     xmlns:tools="http://schemas.android.com/tools"
946.     android:layout_width="match_parent"
947.     android:layout_height="match_parent"
948.     tools:context=".Welcome">
949.     <TextView
950.         android:id="@+id/mainword"
951.         android:layout_width="fill_parent"
952.         android:layout_height="fill_parent"
953.         android:gravity="center"
954.         android:textSize="22dp"
955.         tools:ignore="MissingConstraints" />
956. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/usepwd2"
957. <?xml version="1.0" encoding="utf-8"?>
958. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
959.     xmlns:app="http://schemas.android.com/apk/res-auto"
960.     xmlns:tools="http://schemas.android.com/tools"
961.     android:layout_width="match_parent"
962.     android:layout_height="match_parent"
963.     tools:context=".Welcome">
964.     <TextView
965.         android:id="@+id/mainword"
966.         android:layout_width="fill_parent"
967.         android:layout_height="fill_parent"
968.         android:gravity="center"
969.         android:textSize="22dp"
970.         tools:ignore="MissingConstraints" />
971. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
972. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
973.     xmlns:app="http://schemas.android.com/apk/res-auto"
974.     xmlns:tools="http://schemas.android.com/tools"
975.     android:layout_width="match_parent"
976.     android:layout_height="match_parent"
977.     tools:context=".Welcome">
978.     <TextView
979.         android:id="@+id/mainword"
980.         android:layout_width="fill_parent"
981.         android:layout_height="fill_parent"
982.         android:gravity="center"
983.         android:textSize="22dp"
984.         tools:ignore="MissingConstraints" />
985. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="fill_parent"
986. <?xml version="1.0" encoding="utf-8"?>
987. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
988.     xmlns:app="http://schemas.android.com/apk/res-auto"
989.     xmlns:tools="http://schemas.android.com/tools"
990.     android:layout_width="match_parent"
991.     android:layout_height="match_parent"
992.     tools:context=".Welcome">
993.     <TextView
994.         android:id="@+id/mainword"
995.         android:layout_width="fill_parent"
996.         android:layout_height="fill_parent"
997.         android:gravity="center"
998.         android:textSize="22dp"
999.         tools:ignore="MissingConstraints" />
1000. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1001. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1002.     xmlns:app="http://schemas.android.com/apk/res-auto"
1003.     xmlns:tools="http://schemas.android.com/tools"
1004.     android:layout_width="match_parent"
1005.     android:layout_height="match_parent"
1006.     tools:context=".Welcome">
1007.     <TextView
1008.         android:id="@+id/mainword"
1009.         android:layout_width="fill_parent"
1010.         android:layout_height="fill_parent"
1011.         android:gravity="center"
1012.         android:textSize="22dp"
1013.         tools:ignore="MissingConstraints" />
1014. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
1015. <?xml version="1.0" encoding="utf-8"?>
1016. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1017.     xmlns:app="http://schemas.android.com/apk/res-auto"
1018.     xmlns:tools="http://schemas.android.com/tools"
1019.     android:layout_width="match_parent"
1020.     android:layout_height="match_parent"
1021.     tools:context=".Welcome">
1022.     <TextView
1023.         android:id="@+id/mainword"
1024.         android:layout_width="fill_parent"
1025.         android:layout_height="fill_parent"
1026.         android:gravity="center"
1027.         android:textSize="22dp"
1028.         tools:ignore="MissingConstraints" />
1029. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1030. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1031.     xmlns:app="http://schemas.android.com/apk/res-auto"
1032.     xmlns:tools="http://schemas.android.com/tools"
1033.     android:layout_width="match_parent"
1034.     android:layout_height="match_parent"
1035.     tools:context=".Welcome">
1036.     <TextView
1037.         android:id="@+id/mainword"
1038.         android:layout_width="fill_parent"
1039.         android:layout_height="fill_parent"
1040.         android:gravity="center"
1041.         android:textSize="22dp"
1042.         tools:ignore="MissingConstraints" />
1043. </androidx.constraintlayout.widget.ConstraintLayout>android:inputType="textPassword"
1044. <?xml version="1.0" encoding="utf-8"?>
1045. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1046.     xmlns:app="http://schemas.android.com/apk/res-auto"
1047.     xmlns:tools="http://schemas.android.com/tools"
1048.     android:layout_width="match_parent"
1049.     android:layout_height="match_parent"
1050.     tools:context=".Welcome">
1051.     <TextView
1052.         android:id="@+id/mainword"
1053.         android:layout_width="fill_parent"
1054.         android:layout_height="fill_parent"
1055.         android:gravity="center"
1056.         android:textSize="22dp"
1057.         tools:ignore="MissingConstraints" />
1058. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1059. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1060.     xmlns:app="http://schemas.android.com/apk/res-auto"
1061.     xmlns:tools="http://schemas.android.com/tools"
1062.     android:layout_width="match_parent"
1063.     android:layout_height="match_parent"
1064.     tools:context=".Welcome">
1065.     <TextView
1066.         android:id="@+id/mainword"
1067.         android:layout_width="fill_parent"
1068.         android:layout_height="fill_parent"
1069.         android:gravity="center"
1070.         android:textSize="22dp"
1071.         tools:ignore="MissingConstraints" />
1072. </androidx.constraintlayout.widget.ConstraintLayout>/>
1073. <?xml version="1.0" encoding="utf-8"?>
1074. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1075.     xmlns:app="http://schemas.android.com/apk/res-auto"
1076.     xmlns:tools="http://schemas.android.com/tools"
1077.     android:layout_width="match_parent"
1078.     android:layout_height="match_parent"
1079.     tools:context=".Welcome">
1080.     <TextView
1081.         android:id="@+id/mainword"
1082.         android:layout_width="fill_parent"
1083.         android:layout_height="fill_parent"
1084.         android:gravity="center"
1085.         android:textSize="22dp"
1086.         tools:ignore="MissingConstraints" />
1087. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1088. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1089.     xmlns:app="http://schemas.android.com/apk/res-auto"
1090.     xmlns:tools="http://schemas.android.com/tools"
1091.     android:layout_width="match_parent"
1092.     android:layout_height="match_parent"
1093.     tools:context=".Welcome">
1094.     <TextView
1095.         android:id="@+id/mainword"
1096.         android:layout_width="fill_parent"
1097.         android:layout_height="fill_parent"
1098.         android:gravity="center"
1099.         android:textSize="22dp"
1100.         tools:ignore="MissingConstraints" />
1101. </androidx.constraintlayout.widget.ConstraintLayout><Button
1102. <?xml version="1.0" encoding="utf-8"?>
1103. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1104.     xmlns:app="http://schemas.android.com/apk/res-auto"
1105.     xmlns:tools="http://schemas.android.com/tools"
1106.     android:layout_width="match_parent"
1107.     android:layout_height="match_parent"
1108.     tools:context=".Welcome">
1109.     <TextView
1110.         android:id="@+id/mainword"
1111.         android:layout_width="fill_parent"
1112.         android:layout_height="fill_parent"
1113.         android:gravity="center"
1114.         android:textSize="22dp"
1115.         tools:ignore="MissingConstraints" />
1116. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1117. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1118.     xmlns:app="http://schemas.android.com/apk/res-auto"
1119.     xmlns:tools="http://schemas.android.com/tools"
1120.     android:layout_width="match_parent"
1121.     android:layout_height="match_parent"
1122.     tools:context=".Welcome">
1123.     <TextView
1124.         android:id="@+id/mainword"
1125.         android:layout_width="fill_parent"
1126.         android:layout_height="fill_parent"
1127.         android:gravity="center"
1128.         android:textSize="22dp"
1129.         tools:ignore="MissingConstraints" />
1130. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1131. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1132.     xmlns:app="http://schemas.android.com/apk/res-auto"
1133.     xmlns:tools="http://schemas.android.com/tools"
1134.     android:layout_width="match_parent"
1135.     android:layout_height="match_parent"
1136.     tools:context=".Welcome">
1137.     <TextView
1138.         android:id="@+id/mainword"
1139.         android:layout_width="fill_parent"
1140.         android:layout_height="fill_parent"
1141.         android:gravity="center"
1142.         android:textSize="22dp"
1143.         tools:ignore="MissingConstraints" />
1144. </androidx.constraintlayout.widget.ConstraintLayout>android:id="@+id/submit"
1145. <?xml version="1.0" encoding="utf-8"?>
1146. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1147.     xmlns:app="http://schemas.android.com/apk/res-auto"
1148.     xmlns:tools="http://schemas.android.com/tools"
1149.     android:layout_width="match_parent"
1150.     android:layout_height="match_parent"
1151.     tools:context=".Welcome">
1152.     <TextView
1153.         android:id="@+id/mainword"
1154.         android:layout_width="fill_parent"
1155.         android:layout_height="fill_parent"
1156.         android:gravity="center"
1157.         android:textSize="22dp"
1158.         tools:ignore="MissingConstraints" />
1159. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1160. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1161.     xmlns:app="http://schemas.android.com/apk/res-auto"
1162.     xmlns:tools="http://schemas.android.com/tools"
1163.     android:layout_width="match_parent"
1164.     android:layout_height="match_parent"
1165.     tools:context=".Welcome">
1166.     <TextView
1167.         android:id="@+id/mainword"
1168.         android:layout_width="fill_parent"
1169.         android:layout_height="fill_parent"
1170.         android:gravity="center"
1171.         android:textSize="22dp"
1172.         tools:ignore="MissingConstraints" />
1173. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1174. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1175.     xmlns:app="http://schemas.android.com/apk/res-auto"
1176.     xmlns:tools="http://schemas.android.com/tools"
1177.     android:layout_width="match_parent"
1178.     android:layout_height="match_parent"
1179.     tools:context=".Welcome">
1180.     <TextView
1181.         android:id="@+id/mainword"
1182.         android:layout_width="fill_parent"
1183.         android:layout_height="fill_parent"
1184.         android:gravity="center"
1185.         android:textSize="22dp"
1186.         tools:ignore="MissingConstraints" />
1187. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_width="fill_parent"
1188. <?xml version="1.0" encoding="utf-8"?>
1189. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1190.     xmlns:app="http://schemas.android.com/apk/res-auto"
1191.     xmlns:tools="http://schemas.android.com/tools"
1192.     android:layout_width="match_parent"
1193.     android:layout_height="match_parent"
1194.     tools:context=".Welcome">
1195.     <TextView
1196.         android:id="@+id/mainword"
1197.         android:layout_width="fill_parent"
1198.         android:layout_height="fill_parent"
1199.         android:gravity="center"
1200.         android:textSize="22dp"
1201.         tools:ignore="MissingConstraints" />
1202. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1203. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1204.     xmlns:app="http://schemas.android.com/apk/res-auto"
1205.     xmlns:tools="http://schemas.android.com/tools"
1206.     android:layout_width="match_parent"
1207.     android:layout_height="match_parent"
1208.     tools:context=".Welcome">
1209.     <TextView
1210.         android:id="@+id/mainword"
1211.         android:layout_width="fill_parent"
1212.         android:layout_height="fill_parent"
1213.         android:gravity="center"
1214.         android:textSize="22dp"
1215.         tools:ignore="MissingConstraints" />
1216. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1217. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1218.     xmlns:app="http://schemas.android.com/apk/res-auto"
1219.     xmlns:tools="http://schemas.android.com/tools"
1220.     android:layout_width="match_parent"
1221.     android:layout_height="match_parent"
1222.     tools:context=".Welcome">
1223.     <TextView
1224.         android:id="@+id/mainword"
1225.         android:layout_width="fill_parent"
1226.         android:layout_height="fill_parent"
1227.         android:gravity="center"
1228.         android:textSize="22dp"
1229.         tools:ignore="MissingConstraints" />
1230. </androidx.constraintlayout.widget.ConstraintLayout>android:layout_height="wrap_content"
1231. <?xml version="1.0" encoding="utf-8"?>
1232. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1233.     xmlns:app="http://schemas.android.com/apk/res-auto"
1234.     xmlns:tools="http://schemas.android.com/tools"
1235.     android:layout_width="match_parent"
1236.     android:layout_height="match_parent"
1237.     tools:context=".Welcome">
1238.     <TextView
1239.         android:id="@+id/mainword"
1240.         android:layout_width="fill_parent"
1241.         android:layout_height="fill_parent"
1242.         android:gravity="center"
1243.         android:textSize="22dp"
1244.         tools:ignore="MissingConstraints" />
1245. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1246. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1247.     xmlns:app="http://schemas.android.com/apk/res-auto"
1248.     xmlns:tools="http://schemas.android.com/tools"
1249.     android:layout_width="match_parent"
1250.     android:layout_height="match_parent"
1251.     tools:context=".Welcome">
1252.     <TextView
1253.         android:id="@+id/mainword"
1254.         android:layout_width="fill_parent"
1255.         android:layout_height="fill_parent"
1256.         android:gravity="center"
1257.         android:textSize="22dp"
1258.         tools:ignore="MissingConstraints" />
1259. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
1260. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1261.     xmlns:app="http://schemas.android.com/apk/res-auto"
1262.     xmlns:tools="http://schemas.android.com/tools"
1263.     android:layout_width="match_parent"
1264.     android:layout_height="match_parent"
1265.     tools:context=".Welcome">
1266.     <TextView
1267.         android:id="@+id/mainword"
1268.         android:layout_width="fill_parent"
1269.         android:layout_height="fill_parent"
1270.         android:gravity="center"
1271.         android:textSize="22dp"
1272.         tools:ignore="MissingConstraints" />
1273. </androidx.constraintlayout.widget.ConstraintLayout>android:text="注册" />
1274. <?xml version="1.0" encoding="utf-8"?>
1275. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
1276.     xmlns:app="http://schemas.android.com/apk/res-auto"
1277.     xmlns:tools="http://schemas.android.com/tools"
1278.     android:layout_width="match_parent"
1279.     android:layout_height="match_parent"
1280.     tools:context=".Welcome">
1281.     <TextView
1282.         android:id="@+id/mainword"
1283.         android:layout_width="fill_parent"
1284.         android:layout_height="fill_parent"
1285.         android:gravity="center"
1286.         android:textSize="22dp"
1287.         tools:ignore="MissingConstraints" />
1288. </androidx.constraintlayout.widget.ConstraintLayout></LinearLayout>
1289. </androidx.constraintlayout.widget.ConstraintLayout>

复制代码

3.欢迎界面——Welcome.java

1. package com.example.test06;
3. import androidx.appcompat.app.AppCompatActivity;
5. import android.content.SharedPreferences;
6. import android.os.Bundle;
7. import android.widget.TextView;
9. public class Welcome extends AppCompatActivity {
10. <?xml version="1.0" encoding="utf-8"?>
11. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
12.     xmlns:app="http://schemas.android.com/apk/res-auto"
13.     xmlns:tools="http://schemas.android.com/tools"
14.     android:layout_width="match_parent"
15.     android:layout_height="match_parent"
16.     tools:context=".Welcome">
17.     <TextView
18.         android:id="@+id/mainword"
19.         android:layout_width="fill_parent"
20.         android:layout_height="fill_parent"
21.         android:gravity="center"
22.         android:textSize="22dp"
23.         tools:ignore="MissingConstraints" />
24. </androidx.constraintlayout.widget.ConstraintLayout>SharedPreferences sp;
25. <?xml version="1.0" encoding="utf-8"?>
26. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
27.     xmlns:app="http://schemas.android.com/apk/res-auto"
28.     xmlns:tools="http://schemas.android.com/tools"
29.     android:layout_width="match_parent"
30.     android:layout_height="match_parent"
31.     tools:context=".Welcome">
32.     <TextView
33.         android:id="@+id/mainword"
34.         android:layout_width="fill_parent"
35.         android:layout_height="fill_parent"
36.         android:gravity="center"
37.         android:textSize="22dp"
38.         tools:ignore="MissingConstraints" />
39. </androidx.constraintlayout.widget.ConstraintLayout>TextView showhello;
40. <?xml version="1.0" encoding="utf-8"?>
41. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
42.     xmlns:app="http://schemas.android.com/apk/res-auto"
43.     xmlns:tools="http://schemas.android.com/tools"
44.     android:layout_width="match_parent"
45.     android:layout_height="match_parent"
46.     tools:context=".Welcome">
47.     <TextView
48.         android:id="@+id/mainword"
49.         android:layout_width="fill_parent"
50.         android:layout_height="fill_parent"
51.         android:gravity="center"
52.         android:textSize="22dp"
53.         tools:ignore="MissingConstraints" />
54. </androidx.constraintlayout.widget.ConstraintLayout>@Override
55. <?xml version="1.0" encoding="utf-8"?>
56. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
57.     xmlns:app="http://schemas.android.com/apk/res-auto"
58.     xmlns:tools="http://schemas.android.com/tools"
59.     android:layout_width="match_parent"
60.     android:layout_height="match_parent"
61.     tools:context=".Welcome">
62.     <TextView
63.         android:id="@+id/mainword"
64.         android:layout_width="fill_parent"
65.         android:layout_height="fill_parent"
66.         android:gravity="center"
67.         android:textSize="22dp"
68.         tools:ignore="MissingConstraints" />
69. </androidx.constraintlayout.widget.ConstraintLayout>protected void onCreate(Bundle savedInstanceState) {
70. <?xml version="1.0" encoding="utf-8"?>
71. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
72.     xmlns:app="http://schemas.android.com/apk/res-auto"
73.     xmlns:tools="http://schemas.android.com/tools"
74.     android:layout_width="match_parent"
75.     android:layout_height="match_parent"
76.     tools:context=".Welcome">
77.     <TextView
78.         android:id="@+id/mainword"
79.         android:layout_width="fill_parent"
80.         android:layout_height="fill_parent"
81.         android:gravity="center"
82.         android:textSize="22dp"
83.         tools:ignore="MissingConstraints" />
84. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
85. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
86.     xmlns:app="http://schemas.android.com/apk/res-auto"
87.     xmlns:tools="http://schemas.android.com/tools"
88.     android:layout_width="match_parent"
89.     android:layout_height="match_parent"
90.     tools:context=".Welcome">
91.     <TextView
92.         android:id="@+id/mainword"
93.         android:layout_width="fill_parent"
94.         android:layout_height="fill_parent"
95.         android:gravity="center"
96.         android:textSize="22dp"
97.         tools:ignore="MissingConstraints" />
98. </androidx.constraintlayout.widget.ConstraintLayout>super.onCreate(savedInstanceState);
99. <?xml version="1.0" encoding="utf-8"?>
100. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
101.     xmlns:app="http://schemas.android.com/apk/res-auto"
102.     xmlns:tools="http://schemas.android.com/tools"
103.     android:layout_width="match_parent"
104.     android:layout_height="match_parent"
105.     tools:context=".Welcome">
106.     <TextView
107.         android:id="@+id/mainword"
108.         android:layout_width="fill_parent"
109.         android:layout_height="fill_parent"
110.         android:gravity="center"
111.         android:textSize="22dp"
112.         tools:ignore="MissingConstraints" />
113. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
114. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
115.     xmlns:app="http://schemas.android.com/apk/res-auto"
116.     xmlns:tools="http://schemas.android.com/tools"
117.     android:layout_width="match_parent"
118.     android:layout_height="match_parent"
119.     tools:context=".Welcome">
120.     <TextView
121.         android:id="@+id/mainword"
122.         android:layout_width="fill_parent"
123.         android:layout_height="fill_parent"
124.         android:gravity="center"
125.         android:textSize="22dp"
126.         tools:ignore="MissingConstraints" />
127. </androidx.constraintlayout.widget.ConstraintLayout>setContentView(R.layout.activity_welcome);
128. <?xml version="1.0" encoding="utf-8"?>
129. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
130.     xmlns:app="http://schemas.android.com/apk/res-auto"
131.     xmlns:tools="http://schemas.android.com/tools"
132.     android:layout_width="match_parent"
133.     android:layout_height="match_parent"
134.     tools:context=".Welcome">
135.     <TextView
136.         android:id="@+id/mainword"
137.         android:layout_width="fill_parent"
138.         android:layout_height="fill_parent"
139.         android:gravity="center"
140.         android:textSize="22dp"
141.         tools:ignore="MissingConstraints" />
142. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
143. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
144.     xmlns:app="http://schemas.android.com/apk/res-auto"
145.     xmlns:tools="http://schemas.android.com/tools"
146.     android:layout_width="match_parent"
147.     android:layout_height="match_parent"
148.     tools:context=".Welcome">
149.     <TextView
150.         android:id="@+id/mainword"
151.         android:layout_width="fill_parent"
152.         android:layout_height="fill_parent"
153.         android:gravity="center"
154.         android:textSize="22dp"
155.         tools:ignore="MissingConstraints" />
156. </androidx.constraintlayout.widget.ConstraintLayout>sp = this.getSharedPreferences("username", this.MODE_PRIVATE);  //获取sharepreferences
157. <?xml version="1.0" encoding="utf-8"?>
158. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
159.     xmlns:app="http://schemas.android.com/apk/res-auto"
160.     xmlns:tools="http://schemas.android.com/tools"
161.     android:layout_width="match_parent"
162.     android:layout_height="match_parent"
163.     tools:context=".Welcome">
164.     <TextView
165.         android:id="@+id/mainword"
166.         android:layout_width="fill_parent"
167.         android:layout_height="fill_parent"
168.         android:gravity="center"
169.         android:textSize="22dp"
170.         tools:ignore="MissingConstraints" />
171. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
172. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
173.     xmlns:app="http://schemas.android.com/apk/res-auto"
174.     xmlns:tools="http://schemas.android.com/tools"
175.     android:layout_width="match_parent"
176.     android:layout_height="match_parent"
177.     tools:context=".Welcome">
178.     <TextView
179.         android:id="@+id/mainword"
180.         android:layout_width="fill_parent"
181.         android:layout_height="fill_parent"
182.         android:gravity="center"
183.         android:textSize="22dp"
184.         tools:ignore="MissingConstraints" />
185. </androidx.constraintlayout.widget.ConstraintLayout>showhello = this.findViewById(R.id.mainword);<?xml version="1.0" encoding="utf-8"?>
186. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
187.     xmlns:app="http://schemas.android.com/apk/res-auto"
188.     xmlns:tools="http://schemas.android.com/tools"
189.     android:layout_width="match_parent"
190.     android:layout_height="match_parent"
191.     tools:context=".Welcome">
192.     <TextView
193.         android:id="@+id/mainword"
194.         android:layout_width="fill_parent"
195.         android:layout_height="fill_parent"
196.         android:gravity="center"
197.         android:textSize="22dp"
198.         tools:ignore="MissingConstraints" />
199. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
200. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
201.     xmlns:app="http://schemas.android.com/apk/res-auto"
202.     xmlns:tools="http://schemas.android.com/tools"
203.     android:layout_width="match_parent"
204.     android:layout_height="match_parent"
205.     tools:context=".Welcome">
206.     <TextView
207.         android:id="@+id/mainword"
208.         android:layout_width="fill_parent"
209.         android:layout_height="fill_parent"
210.         android:gravity="center"
211.         android:textSize="22dp"
212.         tools:ignore="MissingConstraints" />
213. </androidx.constraintlayout.widget.ConstraintLayout>   //显示欢迎
215. <?xml version="1.0" encoding="utf-8"?>
216. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
217.     xmlns:app="http://schemas.android.com/apk/res-auto"
218.     xmlns:tools="http://schemas.android.com/tools"
219.     android:layout_width="match_parent"
220.     android:layout_height="match_parent"
221.     tools:context=".Welcome">
222.     <TextView
223.         android:id="@+id/mainword"
224.         android:layout_width="fill_parent"
225.         android:layout_height="fill_parent"
226.         android:gravity="center"
227.         android:textSize="22dp"
228.         tools:ignore="MissingConstraints" />
229. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
230. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
231.     xmlns:app="http://schemas.android.com/apk/res-auto"
232.     xmlns:tools="http://schemas.android.com/tools"
233.     android:layout_width="match_parent"
234.     android:layout_height="match_parent"
235.     tools:context=".Welcome">
236.     <TextView
237.         android:id="@+id/mainword"
238.         android:layout_width="fill_parent"
239.         android:layout_height="fill_parent"
240.         android:gravity="center"
241.         android:textSize="22dp"
242.         tools:ignore="MissingConstraints" />
243. </androidx.constraintlayout.widget.ConstraintLayout>showhello.setText("欢迎你！"+sp.getString("Loginname",""));<?xml version="1.0" encoding="utf-8"?>
244. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
245.     xmlns:app="http://schemas.android.com/apk/res-auto"
246.     xmlns:tools="http://schemas.android.com/tools"
247.     android:layout_width="match_parent"
248.     android:layout_height="match_parent"
249.     tools:context=".Welcome">
250.     <TextView
251.         android:id="@+id/mainword"
252.         android:layout_width="fill_parent"
253.         android:layout_height="fill_parent"
254.         android:gravity="center"
255.         android:textSize="22dp"
256.         tools:ignore="MissingConstraints" />
257. </androidx.constraintlayout.widget.ConstraintLayout> //获取用户名
258. <?xml version="1.0" encoding="utf-8"?>
259. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
260.     xmlns:app="http://schemas.android.com/apk/res-auto"
261.     xmlns:tools="http://schemas.android.com/tools"
262.     android:layout_width="match_parent"
263.     android:layout_height="match_parent"
264.     tools:context=".Welcome">
265.     <TextView
266.         android:id="@+id/mainword"
267.         android:layout_width="fill_parent"
268.         android:layout_height="fill_parent"
269.         android:gravity="center"
270.         android:textSize="22dp"
271.         tools:ignore="MissingConstraints" />
272. </androidx.constraintlayout.widget.ConstraintLayout>}
273. }

复制代码

这是对应的布局文件activity_welcome.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3.     xmlns:app="http://schemas.android.com/apk/res-auto"
4.     xmlns:tools="http://schemas.android.com/tools"
5.     android:layout_width="match_parent"
6.     android:layout_height="match_parent"
7.     tools:context=".Welcome">
8.     <TextView
9.         android:id="@+id/mainword"
10.         android:layout_width="fill_parent"
11.         android:layout_height="fill_parent"
12.         android:gravity="center"
13.         android:textSize="22dp"
14.         tools:ignore="MissingConstraints" />
15. </androidx.constraintlayout.widget.ConstraintLayout>

复制代码

4.数据库——Mysql.java

1. package com.example.test06;import android.content.Context;import android.database.sqlite.SQLiteDatabase;import android.database.sqlite.SQLiteOpenHelper;import androidx.annotation.Nullable;public class Mysql extends SQLiteOpenHelper {<?xml version="1.0" encoding="utf-8"?>
2. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
3.     xmlns:app="http://schemas.android.com/apk/res-auto"
4.     xmlns:tools="http://schemas.android.com/tools"
5.     android:layout_width="match_parent"
6.     android:layout_height="match_parent"
7.     tools:context=".Welcome">
8.     <TextView
9.         android:id="@+id/mainword"
10.         android:layout_width="fill_parent"
11.         android:layout_height="fill_parent"
12.         android:gravity="center"
13.         android:textSize="22dp"
14.         tools:ignore="MissingConstraints" />
15. </androidx.constraintlayout.widget.ConstraintLayout>public Mysql(@Nullable Context context, @Nullable String name, @Nullable SQLiteDatabase.CursorFactory factory, int version) {<?xml version="1.0" encoding="utf-8"?>
16. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
17.     xmlns:app="http://schemas.android.com/apk/res-auto"
18.     xmlns:tools="http://schemas.android.com/tools"
19.     android:layout_width="match_parent"
20.     android:layout_height="match_parent"
21.     tools:context=".Welcome">
22.     <TextView
23.         android:id="@+id/mainword"
24.         android:layout_width="fill_parent"
25.         android:layout_height="fill_parent"
26.         android:gravity="center"
27.         android:textSize="22dp"
28.         tools:ignore="MissingConstraints" />
29. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
30. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
31.     xmlns:app="http://schemas.android.com/apk/res-auto"
32.     xmlns:tools="http://schemas.android.com/tools"
33.     android:layout_width="match_parent"
34.     android:layout_height="match_parent"
35.     tools:context=".Welcome">
36.     <TextView
37.         android:id="@+id/mainword"
38.         android:layout_width="fill_parent"
39.         android:layout_height="fill_parent"
40.         android:gravity="center"
41.         android:textSize="22dp"
42.         tools:ignore="MissingConstraints" />
43. </androidx.constraintlayout.widget.ConstraintLayout>super(context, name, factory, version);<?xml version="1.0" encoding="utf-8"?>
44. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
45.     xmlns:app="http://schemas.android.com/apk/res-auto"
46.     xmlns:tools="http://schemas.android.com/tools"
47.     android:layout_width="match_parent"
48.     android:layout_height="match_parent"
49.     tools:context=".Welcome">
50.     <TextView
51.         android:id="@+id/mainword"
52.         android:layout_width="fill_parent"
53.         android:layout_height="fill_parent"
54.         android:gravity="center"
55.         android:textSize="22dp"
56.         tools:ignore="MissingConstraints" />
57. </androidx.constraintlayout.widget.ConstraintLayout>}<?xml version="1.0" encoding="utf-8"?>
58. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
59.     xmlns:app="http://schemas.android.com/apk/res-auto"
60.     xmlns:tools="http://schemas.android.com/tools"
61.     android:layout_width="match_parent"
62.     android:layout_height="match_parent"
63.     tools:context=".Welcome">
64.     <TextView
65.         android:id="@+id/mainword"
66.         android:layout_width="fill_parent"
67.         android:layout_height="fill_parent"
68.         android:gravity="center"
69.         android:textSize="22dp"
70.         tools:ignore="MissingConstraints" />
71. </androidx.constraintlayout.widget.ConstraintLayout>@Override<?xml version="1.0" encoding="utf-8"?>
72. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
73.     xmlns:app="http://schemas.android.com/apk/res-auto"
74.     xmlns:tools="http://schemas.android.com/tools"
75.     android:layout_width="match_parent"
76.     android:layout_height="match_parent"
77.     tools:context=".Welcome">
78.     <TextView
79.         android:id="@+id/mainword"
80.         android:layout_width="fill_parent"
81.         android:layout_height="fill_parent"
82.         android:gravity="center"
83.         android:textSize="22dp"
84.         tools:ignore="MissingConstraints" />
85. </androidx.constraintlayout.widget.ConstraintLayout>public void onCreate(SQLiteDatabase db) {<?xml version="1.0" encoding="utf-8"?>
86. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
87.     xmlns:app="http://schemas.android.com/apk/res-auto"
88.     xmlns:tools="http://schemas.android.com/tools"
89.     android:layout_width="match_parent"
90.     android:layout_height="match_parent"
91.     tools:context=".Welcome">
92.     <TextView
93.         android:id="@+id/mainword"
94.         android:layout_width="fill_parent"
95.         android:layout_height="fill_parent"
96.         android:gravity="center"
97.         android:textSize="22dp"
98.         tools:ignore="MissingConstraints" />
99. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
100. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
101.     xmlns:app="http://schemas.android.com/apk/res-auto"
102.     xmlns:tools="http://schemas.android.com/tools"
103.     android:layout_width="match_parent"
104.     android:layout_height="match_parent"
105.     tools:context=".Welcome">
106.     <TextView
107.         android:id="@+id/mainword"
108.         android:layout_width="fill_parent"
109.         android:layout_height="fill_parent"
110.         android:gravity="center"
111.         android:textSize="22dp"
112.         tools:ignore="MissingConstraints" />
113. </androidx.constraintlayout.widget.ConstraintLayout>String sql = "create table logins(id integer primary key autoincrement,usname text,uspwd text)";<?xml version="1.0" encoding="utf-8"?>
114. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
115.     xmlns:app="http://schemas.android.com/apk/res-auto"
116.     xmlns:tools="http://schemas.android.com/tools"
117.     android:layout_width="match_parent"
118.     android:layout_height="match_parent"
119.     tools:context=".Welcome">
120.     <TextView
121.         android:id="@+id/mainword"
122.         android:layout_width="fill_parent"
123.         android:layout_height="fill_parent"
124.         android:gravity="center"
125.         android:textSize="22dp"
126.         tools:ignore="MissingConstraints" />
127. </androidx.constraintlayout.widget.ConstraintLayout><?xml version="1.0" encoding="utf-8"?>
128. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
129.     xmlns:app="http://schemas.android.com/apk/res-auto"
130.     xmlns:tools="http://schemas.android.com/tools"
131.     android:layout_width="match_parent"
132.     android:layout_height="match_parent"
133.     tools:context=".Welcome">
134.     <TextView
135.         android:id="@+id/mainword"
136.         android:layout_width="fill_parent"
137.         android:layout_height="fill_parent"
138.         android:gravity="center"
139.         android:textSize="22dp"
140.         tools:ignore="MissingConstraints" />
141. </androidx.constraintlayout.widget.ConstraintLayout>db.execSQL(sql);<?xml version="1.0" encoding="utf-8"?>
142. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
143.     xmlns:app="http://schemas.android.com/apk/res-auto"
144.     xmlns:tools="http://schemas.android.com/tools"
145.     android:layout_width="match_parent"
146.     android:layout_height="match_parent"
147.     tools:context=".Welcome">
148.     <TextView
149.         android:id="@+id/mainword"
150.         android:layout_width="fill_parent"
151.         android:layout_height="fill_parent"
152.         android:gravity="center"
153.         android:textSize="22dp"
154.         tools:ignore="MissingConstraints" />
155. </androidx.constraintlayout.widget.ConstraintLayout>}<?xml version="1.0" encoding="utf-8"?>
156. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
157.     xmlns:app="http://schemas.android.com/apk/res-auto"
158.     xmlns:tools="http://schemas.android.com/tools"
159.     android:layout_width="match_parent"
160.     android:layout_height="match_parent"
161.     tools:context=".Welcome">
162.     <TextView
163.         android:id="@+id/mainword"
164.         android:layout_width="fill_parent"
165.         android:layout_height="fill_parent"
166.         android:gravity="center"
167.         android:textSize="22dp"
168.         tools:ignore="MissingConstraints" />
169. </androidx.constraintlayout.widget.ConstraintLayout>@Override<?xml version="1.0" encoding="utf-8"?>
170. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
171.     xmlns:app="http://schemas.android.com/apk/res-auto"
172.     xmlns:tools="http://schemas.android.com/tools"
173.     android:layout_width="match_parent"
174.     android:layout_height="match_parent"
175.     tools:context=".Welcome">
176.     <TextView
177.         android:id="@+id/mainword"
178.         android:layout_width="fill_parent"
179.         android:layout_height="fill_parent"
180.         android:gravity="center"
181.         android:textSize="22dp"
182.         tools:ignore="MissingConstraints" />
183. </androidx.constraintlayout.widget.ConstraintLayout>public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {<?xml version="1.0" encoding="utf-8"?>
184. <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
185.     xmlns:app="http://schemas.android.com/apk/res-auto"
186.     xmlns:tools="http://schemas.android.com/tools"
187.     android:layout_width="match_parent"
188.     android:layout_height="match_parent"
189.     tools:context=".Welcome">
190.     <TextView
191.         android:id="@+id/mainword"
192.         android:layout_width="fill_parent"
193.         android:layout_height="fill_parent"
194.         android:gravity="center"
195.         android:textSize="22dp"
196.         tools:ignore="MissingConstraints" />
197. </androidx.constraintlayout.widget.ConstraintLayout>}}

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       代码可能有些简陋，考虑也可能没那么全面，但基本的功能还是可以的。暂时没发现什么大的问题。

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