AndroidStudio移动应用开发第七次实验:开发手机电话号码簿 ...

何小豆儿在此 · 2024-12-7 08:48:23

《移动应用开发》课程

第七次实验

1、在Android Studio中，完成以下功能。

图-1 联系人列表图-2 添加联系人图-3 联系人详情

请开发手机电话号码簿。在默认页面中，按照图-1方式展示页面内容，要求所有的信息均是从SQLite中进行获取，详细包括：
（1）联系人数量；
（2）联系人的姓名。
联系人姓名可以使用全英文方式(本项目支持中文)，要求按照首字母进行分组。联系人数量在20人以上，联系人分组要求在4组以上。
联系人图标采用预先设置的图片库进行加载，并答应用户进行选取更换其他图标（参见课件中干系Demo）。
点击联系人列表上方的搜索栏后，表现搜索页面（请自行设计页面布局效果），在输入检索关键字后，查询联系人信息，并以列表方式表现。
点击联系人列表条目（包括经过检索返回的联系人列表），对应跳转到联系人详情页面（参见图-3），当用户对应点击号码条目对应的“拨打电话”、“视频电话”、“发送信息”按钮，采用Toast方式表现对应的功能，即Dial number，Video call，Send message(本项目跳转到相应的活动页面)。
点击图-1中的“+”（添加）按钮，跳转到添加联系人信息页面（参见图-2），为用户提供添加联系人信息（包括姓名、电话号码、电子信箱、备注、单位信息）和头像信息。保存后，将信息存储到数据库中，并相应更新联系人列表的表现内容。
运行效果:

搜索功能

文件目次 :

AddContactActivity.java

package com.example.theseventhexperiment;
// 导入必要的包
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.*;
import androidx.appcompat.app.AppCompatActivity;
import java.util.*;
public class AddContactActivity extends AppCompatActivity implements View.OnClickListener {
// 声明UI组件
private ImageButton ib_back;
private Button btn_tianjia;
private EditText et_xingming, et_dianhuahaoma, et_dianziyoujian, et_beizhu, et_danweixinxi;
private Spinner spinner;
// 声明数据变量
private String name, e_mail, remark, unit_information, number, avatar, from;
private int id;
private Integer selectedImageResource;
private UserDBHelper mHelper;
private List<Map<String, Integer>> data; // 使用Integer类型，因为资源ID是整数
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_contact);
// 初始化视图组件
initView();
// 设置监听器
setListener();
// 获取传递过来的数据
getValue();
// 设置视图内容
setView();
// 初始化并设置Spinner适配器
setupSpinner();
}
// 初始化视图组件
private void initView() {
ib_back = findViewById(R.id.ib_back);
btn_tianjia = findViewById(R.id.btn_tianjia);
et_xingming = findViewById(R.id.et_xingming);
et_dianhuahaoma = findViewById(R.id.et_dianhuahaoma);
et_dianziyoujian = findViewById(R.id.et_dianziyoujian);
et_beizhu = findViewById(R.id.et_beizhu);
et_danweixinxi = findViewById(R.id.et_danweixinxi);
spinner = findViewById(R.id.spinner_contact_icon);
}
// 设置监听器
private void setListener() {
ib_back.setOnClickListener(this);
btn_tianjia.setOnClickListener(this);
}
// 获取传递过来的数据
private void getValue() {
from = getIntent().getStringExtra("from");
if ("edit".equals(from)) {
id = getIntent().getIntExtra("id", 0);
name = getIntent().getStringExtra("name");
number = getIntent().getStringExtra("number");
avatar = getIntent().getStringExtra("avatar");
e_mail = getIntent().getStringExtra("e-mail");
remark = getIntent().getStringExtra("remark");
unit_information = getIntent().getStringExtra("unit_information");
// 对可能为null的字符串进行默认值处理
if (e_mail == null) e_mail = "无";
if (remark == null) remark = "无";
if (unit_information == null) unit_information = "无";
}
}
// 设置视图内容
private void setView() {
if ("edit".equals(from)) {
et_xingming.setText(name);
et_dianhuahaoma.setText(number);
et_dianziyoujian.setText(e_mail);
et_beizhu.setText(remark);
et_danweixinxi.setText(unit_information);
}
}
// 初始化并设置Spinner适配器
private void setupSpinner() {
// 准备数据
data = getListData();
// 创建SimpleAdapter并设置给Spinner
SimpleAdapter simpleAdapter = new SimpleAdapter(
this,
data,
R.layout.spinner_item, // 自定义布局
new String[]{"touxiang"}, // 数据源中的键
new int[]{R.id.imageView} // 布局中的ID
);
spinner.setAdapter(simpleAdapter);
// 设置Spinner选择监听器
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// 获取选中的项并设置给selectedImageResource
Map<String, Integer> selectedItem = (Map<String, Integer>) parent.getItemAtPosition(position);
selectedImageResource = selectedItem.get("touxiang");
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// 不执行任何操作
}
});
}
// 获取Spinner列表数据
private List<Map<String, Integer>> getListData() {
List<Map<String, Integer>> list = new ArrayList<>();
int[] touxiangResources = {
R.drawable.touxiang1, R.drawable.touxiang2, R.drawable.touxiang3,
R.drawable.touxiang4, R.drawable.touxiang5, R.drawable.touxiang6
};
for (int resource : touxiangResources) {
Map<String, Integer> item = new HashMap<>();
item.put("touxiang", resource);
// 如果是编辑模式且当前资源是选中的头像，则将其添加到列表的开头
if ("edit".equals(from) && resource == Integer.parseInt(avatar)) {
list.add(0, item);
} else {
list.add(item);
}
}
return list;
}
// 数据库帮助器的初始化与关闭
@Override
protected void onStart() {
super.onStart();
mHelper = UserDBHelper.getInstance(this);
mHelper.getReadableDatabase(); // 通常不需要显式调用，除非需要立即访问
mHelper.getWritableDatabase(); // 同上
}
@Override
protected void onStop() {
super.onStop();
if (mHelper != null) {
mHelper.close();
}
}
// 点击事件处理
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.ib_back:
finish();
break;
case R.id.btn_tianjia:
// 获取输入框内容并进行校验
String et_name = et_xingming.getText().toString().trim();
String et_phone = et_dianhuahaoma.getText().toString().trim();
String et_email = et_dianziyoujian.getText().toString().trim();
String et_remark = et_beizhu.getText().toString().trim();
String et_unitInfo = et_danweixinxi.getText().toString().trim();
// 对空值或无效输入进行处理
if (TextUtils.isEmpty(et_name)) {
Toast.makeText(this, "请输入姓名", Toast.LENGTH_SHORT).show();
} else if (TextUtils.isEmpty(et_phone) || !et_phone.matches("\\d+")) {
Toast.makeText(this, "请输入有效的电话号码", Toast.LENGTH_SHORT).show();
} else {
// 创建联系人对象并保存
Contacter contacter = new Contacter(
et_name, et_phone, et_email, et_remark, et_unitInfo,
selectedImageResource != null ? selectedImageResource.toString() : null
);
if ("edit".equals(from)) {
// 更新联系人
if (mHelper.updateContact(id, contacter) > 0) {
Toast.makeText(this, "修改成功", Toast.LENGTH_SHORT).show();
finish();
} else {
Toast.makeText(this, "修改失败", Toast.LENGTH_SHORT).show();
}
} else if ("add".equals(from)) {
// 添加联系人
if (mHelper.insert(contacter) > 0) {
Toast.makeText(this, "添加成功", Toast.LENGTH_SHORT).show();
finish();
} else {
Toast.makeText(this, "添加失败", Toast.LENGTH_SHORT).show();
}
}
}
break;
default:
break;
}
}
}

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Contacter.java

package com.example.theseventhexperiment;
public class Contacter {
public int id;
public String name;
public String phonenumber;//存储电话号码
public String e_mail;
public String remark;
public String unit_information;
public String avatar;//存储头像资源id
public String beginZ;//第一个字母
public Contacter(int id, String name, String phonenumber, String e_mail, String remark, String unit_information, String avatar, String beginZ) {
this.id = id;
this.name = name;
this.phonenumber = phonenumber;
this.e_mail = e_mail;
this.remark = remark;
this.unit_information = unit_information;
this.avatar = avatar;
this.beginZ = beginZ;
}
public Contacter(String name, String phonenumber, String e_mail, String remark, String unit_information, String avatar) {
this.name = name;
this.phonenumber = phonenumber;
this.e_mail = e_mail;
this.remark = remark;
this.unit_information = unit_information;
this.beginZ = beginZ;
this.avatar = avatar;
}
public String getAvatar() {
return avatar;
}
public void setAvatar(String avatar) {
this.avatar = avatar;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPhonenumber() {
return phonenumber;
}
public void setPhonenumber(String phonenumber) {
this.phonenumber = phonenumber;
}
public String getE_mail() {
return e_mail;
}
public void setE_mail(String e_mail) {
this.e_mail = e_mail;
}
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
public String getUnit_information() {
return unit_information;
}
public void setUnit_information(String unit_information) {
this.unit_information = unit_information;
}
public String getBeginZ() {
return beginZ;
}
public void setBeginZ(String beginZ) {
this.beginZ = beginZ;
}
@Override
public String toString() {
return "Contacter{" +
"id=" + id +
", name='" + name + '\'' +
", phonenumber=" + phonenumber +
", e_mail='" + e_mail + '\'' +
", remark='" + remark + '\'' +
", unit_information='" + unit_information + '\'' +
", beginZ='" + beginZ + '\'' +
'}';
}
}

复制代码

ContacterAdpter.java

package com.example.theseventhexperiment;
import android.content.Context;
import android.os.Build;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import java.util.List;
// 自定义的适配器类，用于显示联系人列表
public class ContacterAdpter extends ArrayAdapter<Contacter> {
List<Contacter> items;
public ContacterAdpter(Context context, List<Contacter> items) {
super(context, R.layout.lian_xi_ren_bu_ju, items);
this.items = items;
}
// 重写getView方法，用于根据位置获取视图
@RequiresApi(api = Build.VERSION_CODES.N)
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
// ViewHolder模式，用于优化性能，减少findViewById的调用
ViewHolder holder;
// 如果convertView为空，说明需要创建新的视图
if (convertView == null) {
LayoutInflater layoutInflater = LayoutInflater.from(getContext());
convertView = layoutInflater.inflate(R.layout.lian_xi_ren_bu_ju, parent, false);
holder = new ViewHolder();
holder.iv_touxiang = convertView.findViewById(R.id.iv_touxiang); // 头像ImageView
holder.tv_xingming = convertView.findViewById(R.id.tv_xingming); // 姓名TextView
holder.tv_zimu = convertView.findViewById(R.id.tv_zimu); // 首字母TextView
// 将ViewHolder对象保存在convertView的tag中，以便复用
convertView.setTag(holder);
} else {
// 如果convertView不为空，则直接获取ViewHolder对象
holder = (ViewHolder) convertView.getTag();
}
// 获取当前位置的联系人对象
Contacter contacter = items.get(position);
// 设置姓名
holder.tv_xingming.setText(contacter.getName());
// 设置头像，这里假设头像资源是以字符串形式存储的整数ID
holder.iv_touxiang.setImageResource(Integer.parseInt(contacter.getAvatar()));
// 判断是否需要显示首字母
// 如果当前位置是第一个或者当前联系人的首字母与前一个不同，则显示首字母
if (position == 0 || !items.get(position - 1).getBeginZ().equals(contacter.getBeginZ())) {
holder.tv_zimu.setText(contacter.getBeginZ());
holder.tv_zimu.setVisibility(View.VISIBLE);
} else {
// 否则隐藏首字母
holder.tv_zimu.setVisibility(View.GONE);
}
// 返回当前位置的视图
return convertView;
}
// ViewHolder类，用于缓存视图引用，提高性能
private static class ViewHolder {
ImageView iv_touxiang; // 头像ImageView
TextView tv_xingming; // 姓名TextView
TextView tv_zimu; // 首字母TextView
}
}

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ContactInformationActivity.java

package com.example.theseventhexperiment;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
// ContactInformationActivity 类用于显示联系人详细信息并提供相关操作
public class ContactInformationActivity extends AppCompatActivity implements View.OnClickListener {
// 视图元素
private ImageButton btn_back;
private TextView tv_xingming, tv_number, tv_dianziyoujian, tv_beizhu, tv_danweixinxi;
private ImageView iv_touxiang;
private Button btn_shanchu, btn_dadianhua, btn_faxinxi, btn_bianji;
// 数据库帮助类实例
private UserDBHelper dbHelper;
// 联系人信息变量
private String name, e_mail, remark, unit_information, number, avatar;
private int id;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contact_information);
// 初始化视图元素
initView();
// 设置点击事件监听器
setListener();
// 从 Intent 中获取联系人信息
getValueFromIntent();
// 设置视图显示内容
setView();
}
// 从 Intent 中获取联系人信息的方法
private void getValueFromIntent() {
id = getIntent().getIntExtra("id", 0);
name = getIntent().getStringExtra("name");
number = getIntent().getStringExtra("number");
avatar = getIntent().getStringExtra("avatar");
e_mail = getIntent().getStringExtra("e-mail");
if (e_mail == null) {
e_mail = "无";
}
remark = getIntent().getStringExtra("remark");
if (remark == null) {
remark = "无";
}
unit_information = getIntent().getStringExtra("unit_information");
if (unit_information == null) {
unit_information = "无";
}
}
// 设置点击事件监听器的方法
private void setListener() {
btn_back.setOnClickListener(this);
btn_shanchu.setOnClickListener(this);
btn_dadianhua.setOnClickListener(this);
btn_faxinxi.setOnClickListener(this);
btn_bianji.setOnClickListener(this);
}
// 设置视图显示内容的方法
private void setView() {
tv_xingming.setText("姓名：" + name);
tv_number.setText("电话号码：" + number);
// 注意：这里假设 avatar 是一个资源 ID，如果 avatar 是 URL 或文件路径，需要相应处理
iv_touxiang.setImageResource(Integer.parseInt(avatar));
tv_beizhu.setText("备注：" + remark);
tv_danweixinxi.setText("单位信息：" + unit_information);
tv_dianziyoujian.setText("电子邮件：" + e_mail);
}
// 初始化视图元素的方法
private void initView() {
tv_xingming = findViewById(R.id.tv_datail_xingming);
tv_number = findViewById(R.id.tv_detail_dianhuahaoma);
tv_dianziyoujian = findViewById(R.id.tv_detail_dianziyoujian);
tv_beizhu = findViewById(R.id.tv_detail_beizhu);
tv_danweixinxi = findViewById(R.id.tv_detail_danweixinxi);
btn_back = findViewById(R.id.ib_detail_back);
btn_dadianhua = findViewById(R.id.btn_dadianhua);
btn_faxinxi = findViewById(R.id.btn_faxiaoxi);
btn_bianji = findViewById(R.id.btn_bianji);
iv_touxiang = findViewById(R.id.iv_detail_touxiang);
btn_shanchu = findViewById(R.id.btn_shanchu);
// 初始化数据库帮助类实例
dbHelper = UserDBHelper.getInstance(this);
}
// 点击事件处理方法
@Override
public void onClick(View v) {
Intent intent = new Intent();
switch (v.getId()) {
case R.id.ib_detail_back:
// 返回上一个界面
intent.putExtra("from","detail");
finish();
break;
case R.id.btn_shanchu:
// 显示删除确认对话框
showDeleteConfirmDialog();
break;
case R.id.btn_dadianhua:
// 拨打电话
intent.setAction(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:" + number));
startActivity(intent);
break;
case R.id.btn_faxiaoxi:
// 发送短信
intent.setAction(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("smsto:" + number));
startActivity(intent);
break;
case R.id.btn_bianji:
// 编辑联系人信息
intent = new Intent(ContactInformationActivity.this, AddContactActivity.class);
intent.putExtra("id", id);
intent.putExtra("name", name);
intent.putExtra("e-mail", e_mail);
intent.putExtra("remark", remark);
intent.putExtra("unit_information", unit_information);
intent.putExtra("number", number);
intent.putExtra("avatar", avatar);
intent.putExtra("from", "edit");
startActivity(intent);
finish();
break;
default:
break;
}
}
// 显示删除确认对话框的方法
private void showDeleteConfirmDialog() {
if (id != 0) { // 假设 0 是一个无效或未设置的 ID 值
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("确认删除")
.setMessage("您确定要删除该联系人吗？")
.setCancelable(false)
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
int numberOfContactsBefore = dbHelper.numberOfContacts();
dbHelper.deleteContactById(id);
int numberOfContactsAfter = dbHelper.numberOfContacts();
if (numberOfContactsBefore - 1 == numberOfContactsAfter) {
Toast.makeText(ContactInformationActivity.this, "删除成功", Toast.LENGTH_SHORT).show();
finish();
} else {
Toast.makeText(ContactInformationActivity.this, "删除失败，可能是 ID 错误或数据库问题", Toast.LENGTH_SHORT).show();
}
}
})
.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
} else {
Toast.makeText(this, "无效的 ID", Toast.LENGTH_SHORT).show();
}
}
}

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GteDataFromDatabase.java

package com.example.theseventhexperiment;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import com.hankcs.hanlp.HanLP;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class GteDataFromDatabase {
// 声明数据库实例和数据库帮助类实例
private static SQLiteDatabase db;
private static UserDBHelper userDBHelper;
/**
* 从数据库中获取所有联系人信息的方法
*
* @param context 上下文对象，用于访问数据库
* @return 包含所有联系人信息的列表
*/
public static List<Contacter> getAllContacts(Context context) {
List<Contacter> list = new ArrayList<>(); // 创建联系人列表
// 初始化数据库帮助类并获取可读数据库
userDBHelper = new UserDBHelper(context);
db = userDBHelper.getReadableDatabase();
// 定义正则表达式用于匹配中文字符
String regex = "[\\u4e00-\\u9fa5]+";
// 执行SQL查询，获取所有联系人信息
Cursor res = db.rawQuery("SELECT * FROM contacter_info", null);
try {
while (res.moveToNext()) { // 遍历查询结果
// 从Cursor中提取联系人信息
String id = res.getString(res.getColumnIndexOrThrow("_id")); // 联系人ID
String name = res.getString(res.getColumnIndexOrThrow("name")); // 联系人姓名
String phonenumber = res.getString(res.getColumnIndexOrThrow("phonenumber")); // 联系人电话
String e_mail = res.getString(res.getColumnIndexOrThrow("e_mail")); // 联系人邮箱
String remark = res.getString(res.getColumnIndexOrThrow("remark")); // 联系人备注
String unit_information = res.getString(res.getColumnIndexOrThrow("unit_information")); // 联系人单位信息
// 注意：原代码中avater可能是拼写错误，这里保留原样，但建议检查数据库表结构
String avatar = res.getString(res.getColumnIndexOrThrow("avater")); // 联系人头像
// 创建Contacter对象并设置属性
Contacter contacter = new Contacter(
Integer.parseInt(id),
name,
phonenumber,
e_mail,
remark,
unit_information,
avatar,
""
);
// 设置联系人姓名的首字母或拼音首字母
String firstNameChar = name.substring(0, 1); // 获取姓名的第一个字符
boolean isAlphabetic = firstNameChar.matches("^[a-zA-Z]*"); // 判断是否为英文字母
if (isAlphabetic) {
// 如果是英文字母，则直接设置为大写
contacter.setBeginZ(firstNameChar.toUpperCase());
} else {
// 如果不是英文字母，则检查是否为中文字符
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(firstNameChar);
if (matcher.find()) {
// 如果是中文字符，则转换为拼音并设置首字母大写
String pinyin = HanLP.convertToPinyinString(firstNameChar, "", false);
contacter.setBeginZ(pinyin.substring(0, 1).toUpperCase());
} else {
// 如果既不是英文字母也不是中文字符，则设置为"#"
contacter.setBeginZ("#");
}
}
// 将Contacter对象添加到列表中
list.add(contacter);
}
} finally {
// 关闭Cursor以释放资源
if (res != null) {
res.close();
}
}
// 返回联系人列表
return list;
}
}

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MainActivity.java

package com.example.theseventhexperiment;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.os.Build;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.MotionEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
// 数据库相关变量
SQLiteDatabase db;
UserDBHelper userDBHelper;
// 适配器和视图组件
ContacterAdpter contacterAdpter;
EditText ed_sousuo; // 搜索框
ListView listView; // 联系人列表
ImageButton ib_tianjialianxiren; // 添加联系人按钮
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 初始化视图组件
initView();
// 设置事件监听器
setListener();
// 加载联系人列表
loadViewlist();
}
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
protected void onResume() {
super.onResume();
// 当活动恢复时重新加载联系人列表
ed_sousuo.setText("");//把搜索栏内容清空
loadViewlist();
}
/**
* 从数据库加载联系人列表并更新UI
*/
@RequiresApi(api = Build.VERSION_CODES.N)
private void loadViewlist() {
int number = userDBHelper.numberOfContacts();
String hind = "在" + number + "位联系人中搜索";
ed_sousuo.setHint(hind);
List<Contacter> result = GteDataFromDatabase.getAllContacts(this);
// 如果联系人列表为空，则创建一个空适配器
if (result.isEmpty()) {
contacterAdpter = new ContacterAdpter(this, new ArrayList<>());
} else {
// 否则，对联系人列表进行排序并设置适配器
sort(result);
contacterAdpter = new ContacterAdpter(this, result);
}
// 为listView设置适配器
listView.setAdapter(contacterAdpter);
}
/**
* 设置事件监听器
*/
private void setListener() {
// 添加联系人按钮点击事件
ib_tianjialianxiren.setOnClickListener(this);
// 联系人列表点击事件
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Contacter clickedContacter = contacterAdpter.getItem(position);
Intent intent = new Intent(MainActivity.this, ContactInformationActivity.class);
intent.putExtra("id", clickedContacter.getId());
intent.putExtra("name", clickedContacter.getName());
intent.putExtra("e-mail", clickedContacter.getE_mail());
intent.putExtra("remark", clickedContacter.getRemark());
intent.putExtra("unit_information", clickedContacter.getUnit_information());
intent.putExtra("number", clickedContacter.getPhonenumber());
intent.putExtra("avatar", clickedContacter.getAvatar());
startActivity(intent);
}
});
// 搜索框触摸事件（用于搜索功能）
ed_sousuo.setOnTouchListener(new View.OnTouchListener() {
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
public boolean onTouch(View v, MotionEvent event) {
// 这里逻辑已经被下面的TextWatcher替代，可以移除
return false;
}
});
// 搜索框文本变化监听器（用于实时搜索）
ed_sousuo.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {}
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
public void afterTextChanged(Editable s) {
String searchText = s.toString();
List<Contacter> searchResult = UserDBHelper.Search(MainActivity.this, searchText);
// 更新适配器并设置到listView
if (searchResult == null || searchResult.isEmpty()) {
contacterAdpter = new ContacterAdpter(MainActivity.this, new ArrayList<>());
} else {
sort(searchResult);
contacterAdpter = new ContacterAdpter(MainActivity.this, searchResult);
}
listView.setAdapter(contacterAdpter);
}
});
}
/**
* 初始化视图组件
*/
private void initView() {
ib_tianjialianxiren = findViewById(R.id.ib_tianjialianxiren);
userDBHelper = new UserDBHelper(this);
db = userDBHelper.getReadableDatabase();
ed_sousuo = findViewById(R.id.et_sousuo);
listView = findViewById(R.id.lv_lianxiren);
}
@Override
public void onClick(View v) {
Intent intent = new Intent(this, AddContactActivity.class);
intent.putExtra("from", "add");
startActivity(intent);
}
/**
* 对联系人列表按拼音首字母排序
*/
@RequiresApi(api = Build.VERSION_CODES.N)
public void sort(List<Contacter> contacterList) {
contacterList.sort(new Comparator<Contacter>() {
@Override
public int compare(Contacter c1, Contacter c2) {
String beginZ1 = c1.getBeginZ();
String beginZ2 = c2.getBeginZ();
// 特殊处理"#"开头的联系人，通常表示未设置拼音首字母
if ("#".equals(beginZ1) && "#".equals(beginZ2)) {
return 0;
}
if ("#".equals(beginZ1)) {
return 1;
}
if ("#".equals(beginZ2)) {
return -1;
}
return beginZ1.compareTo(beginZ2);
}
});
}
}

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UserDBHelper.java

package com.example.theseventhexperiment;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import com.hankcs.hanlp.HanLP;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class UserDBHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "contact_db.db";
private static final String TABLE_NAME = "contacter_info";
private static final int VERSION = 1;
public static SQLiteDatabase db = null;
private static UserDBHelper mHelper = null;
public UserDBHelper(Context context) {
super(context, DB_NAME, null, VERSION);
}
public static UserDBHelper getInstance(Context context) {
if (mHelper == null) {
mHelper = new UserDBHelper(context);
}
return mHelper;
}
public static List<Contacter> Search(Context context, String what) {
List<Contacter> list = new ArrayList<>();
mHelper = new UserDBHelper(context);
String sql = "SELECT * FROM " + TABLE_NAME + " WHERE name LIKE '%" + what + "%' OR phonenumber LIKE '%" + what + "%'";
db = mHelper.getReadableDatabase();
String regex = "[\\u4e00-\\u9fa5]+";
Cursor res = null;
res = db.rawQuery(sql, null);
while (res.moveToNext()) {
String id = res.getString(res.getColumnIndexOrThrow("_id")); // 使用列名更安全
String name = res.getString(res.getColumnIndexOrThrow("name"));
String phonenumber = res.getString(res.getColumnIndexOrThrow("phonenumber")); // 注意这里应该是字符串
String e_mail = res.getString(res.getColumnIndexOrThrow("e_mail"));
String remark = res.getString(res.getColumnIndexOrThrow("remark"));
String unit_information = res.getString(res.getColumnIndexOrThrow("unit_information"));
String avatar = res.getString(res.getColumnIndexOrThrow("avater"));
Contacter contacter = new Contacter(
Integer.parseInt(id),
name,
phonenumber,
e_mail,
remark,
unit_information,
avatar,
""
);
String first = name.substring(0, 1);
boolean re = first.matches("^[a-zA-Z]*");
if (re) {
contacter.setBeginZ(first.toUpperCase());
} else {
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(first);
if (matcher.find()) {
String pinyin = HanLP.convertToPinyinString(first, "", false);
contacter.setBeginZ(pinyin.substring(0, 1).toUpperCase());
} else {
contacter.setBeginZ("#");
}
}
list.add(contacter);
}
return list;
}
@Override
public void onCreate(SQLiteDatabase db) {
String sql = "CREATE TABLE IF NOT EXISTS " + TABLE_NAME + "(" +
"_id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL," +
"name VARCHAR NOT NULL," +
"phonenumber VARCHAR NOT NULL," +
"e_mail VARCHAR," +
"remark VARCHAR," +
"unit_information VARCHAR," +
"avater VARCHAR NOT NULL);";
db.execSQL(sql);
}
public void deleteContactById(long id) {
SQLiteDatabase db = getWritableDatabase(); // 获取可写的数据库连接
String selection = "_id = ?"; // 删除条件
String[] selectionArgs = {String.valueOf(id)}; // 删除条件参数
db.delete(TABLE_NAME, selection, selectionArgs); // 执行删除操作
}
public void closeLink() {
if (db != null && db.isOpen()) {
db.close();
db = null;
}
}
public long insert(Contacter contacter) {
ContentValues values = new ContentValues();
SQLiteDatabase db = this.getWritableDatabase();
values.put("name", contacter.name);
values.put("phonenumber", contacter.phonenumber);
values.put("e_mail", contacter.e_mail);
values.put("remark", contacter.remark);
values.put("unit_information", contacter.unit_information);
values.put("avater", contacter.avatar);
return db.insert(TABLE_NAME, null, values);
}
public int numberOfContacts() {
SQLiteDatabase db = this.getReadableDatabase();
String countQuery = "SELECT COUNT(*) FROM " + TABLE_NAME;
Cursor cursor = db.rawQuery(countQuery, null);
int count = 0;
if (cursor.moveToFirst()) {
count = cursor.getInt(0);
}
cursor.close();
return count;
}
public int updateContact(int id, Contacter contacter) {
SQLiteDatabase db = getWritableDatabase();
String selection = "_id = ?";
String[] selectionArgs = {String.valueOf(id)};
ContentValues values = new ContentValues();
values.put("name", contacter.name);
values.put("phonenumber", contacter.phonenumber); // 这里可能需要类型转换，但因为我们假设它是 int，所以不需要
values.put("e_mail", contacter.e_mail);
values.put("remark", contacter.remark);
values.put("unit_information", contacter.unit_information);
values.put("avater", contacter.avatar);
int rowsAffected = db.update(TABLE_NAME, values, selection, selectionArgs);
return rowsAffected;
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
onCreate(db);
}
}

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add.xml

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="80dp"
android:height="80dp"
android:alpha="0.8"
android:tint="#337AE5"
android:viewportWidth="24"
android:viewportHeight="24">
<group
android:scaleX="1.1111112"
android:scaleY="1.1111112"
android:translateX="-1.3333334"
android:translateY="-1.3333334">
<path
android:fillColor="#000000"
android:pathData="M13,7h-2v4L7,11v2h4v4h2v-4h4v-2h-4L13,7zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8s3.59,-8 8,-8 8,3.59 8,8 -3.59,8 -8,8z" />
</group>
</vector>

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back.xml

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="50dp"
android:height="50dp"
android:viewportWidth="24"
android:viewportHeight="24"
android:tint="#3374E5"
android:alpha="0.8">
<path
android:fillColor="@android:color/white"
android:pathData="M20,11H7.83l5.59,-5.59L12,4l-8,8 8,8 1.41,-1.41L7.83,13H20v-2z"/>
</vector>

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sou_suo_kuang.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<solid android:color="#EFEDED"></solid>
<corners android:radius="10dp"></corners>
</shape>
</item>
</selector>

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stype.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape>
<stroke
android:width="0dp"
android:color="#00FF0000" />
<padding
android:bottom="0dp"
android:left="0dp"
android:right="0dp"
android:top="0dp" />
</shape>
</item>
</layer-list>

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activity_add_contact.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp"
tools:context=".AddContactActivity">
<Spinner
android:id="@+id/spinner_contact_icon"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_centerHorizontal="true"
android:layout_marginTop="16dp"
android:background="@drawable/stype"
android:overlapAnchor="false"
android:spinnerMode="dropdown" />
<LinearLayout
android:id="@+id/ll_xingming"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="180dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="姓名:"
android:textSize="20sp" />
<EditText
android:id="@+id/et_xingming"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="必填"
android:inputType="text" />
</LinearLayout>
<LinearLayout
android:id="@+id/ll_dianziyoujian"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/ll_dianhuahaoma"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="电子邮件:"
android:textSize="20sp" />
<EditText
android:id="@+id/et_dianziyoujian"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text" />
</LinearLayout>
<LinearLayout
android:id="@+id/ll_beizhu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/ll_dianziyoujian"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="备注:"
android:textSize="20sp" />
<EditText
android:id="@+id/et_beizhu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text" />
</LinearLayout>
<LinearLayout
android:id="@+id/ll_dianhuahaoma"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/ll_xingming"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="电话号码:"
android:textSize="20sp" />
<EditText
android:id="@+id/et_dianhuahaoma"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="必填"
android:inputType="text" />
</LinearLayout>
<LinearLayout
android:id="@+id/ll_danweixinxi"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/ll_beizhu"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="单位信息:"
android:textSize="20sp" />
<EditText
android:id="@+id/et_danweixinxi"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text" />
</LinearLayout>
<ImageButton
android:id="@+id/ib_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#00FF0000"
android:src="@drawable/back" />
<Button
android:id="@+id/btn_tianjia"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/ll_danweixinxi"
android:layout_centerInParent="true"
android:text="保存" />
</RelativeLayout>

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activity_contact_information.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
tools:context=".ContactInformationActivity">
<ImageButton
android:id="@+id/ib_detail_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginTop="-40dp"
android:background="#00FF0000"
android:paddingLeft="10dp"
android:src="@drawable/back" />
<ImageView
android:id="@+id/iv_detail_touxiang"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dp" />
<TextView
android:id="@+id/tv_datail_xingming"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/iv_detail_touxiang"
android:gravity="center"
android:text="姓名"
android:textSize="30sp" />
<TextView
android:id="@+id/tv_detail_dianhuahaoma"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv_datail_xingming"
android:gravity="center"
android:text="电话号码：12345667"
android:textSize="20sp" />
<TextView
android:id="@+id/tv_detail_dianziyoujian"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv_detail_dianhuahaoma"
android:gravity="center"
android:text="电子邮件：13445@qq.com"
android:textSize="20sp" />
<TextView
android:id="@+id/tv_detail_beizhu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv_detail_dianziyoujian"
android:gravity="center"
android:text="备注：同学"
android:textSize="20sp" />
<TextView
android:id="@+id/tv_detail_danweixinxi"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv_detail_beizhu"
android:gravity="center"
android:text="单位信息：国企"
android:textSize="20sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv_detail_danweixinxi"
android:orientation="vertical"
android:paddingLeft="10dp"
android:paddingRight="10dp">
<Button
android:id="@+id/btn_dadianhua"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="打电话" />
<Button
android:id="@+id/btn_faxiaoxi"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="发消息" />
<Button
android:id="@+id/btn_bianji"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="编辑" />
<Button
android:id="@+id/btn_shanchu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="删除" />
</LinearLayout>
</RelativeLayout>

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activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<EditText
android:id="@+id/et_sousuo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginTop="10dp"
android:layout_marginRight="5dp"
android:background="@drawable/sou_suo_kuang"
android:drawableLeft="@drawable/sousuo"
android:textColor="#4D4F60"
android:textSize="30sp" />
<ListView
android:id="@+id/lv_lianxiren"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/et_sousuo"
android:layout_weight="1" />
<ImageButton
android:id="@+id/ib_tianjialianxiren"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginRight="20dp"
android:layout_marginBottom="80dp"
android:background="#00FF0000"
android:src="@drawable/add" />
</RelativeLayout>

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lian_xi_ren_bu_ju.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/tv_zimu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="20dp"
android:text="A"
android:textSize="30sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<ImageView
android:id="@+id/iv_touxiang"
android:layout_width="80dp"
android:layout_height="80dp"
android:src="@color/black" />
<TextView
android:id="@+id/tv_xingming"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingTop="4dp"
android:textSize="50sp" />
</LinearLayout>
</LinearLayout>

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spinner_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal">
<ImageView
android:id="@+id/imageView"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="8dp" />
</LinearLayout>

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AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.theseventhexperiment">
<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.SEND_SMS"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.TheSeventhExperiment">
<activity android:name=".ContactInformationActivity"></activity>
<activity android:name=".AddContactActivity" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

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干系操纵:
switch语句报错：https://blog.csdn.net/mjh1667002013/article/details/134763804
办理Android虚拟机启动时System UI isn‘t responding错误_system ui isn't responding-CSDN博客
汉语言处理处罚包HanLP下载地址:Maven Repository: com.hankcs » hanlp » portable-1.8.4 (mvnrepository.com)
导入jar包教程（假如没有libs文件夹就创建一个）：
https://blog.csdn.net/weixin_46409629/article/details/129414986?app_version=6.2.8&code=app_1562916241&csdn_share_tail=%7B%22

项目存在的问题:
1.spinner下拉图标(白色的,所以看不见)遮挡图片问题,如下图,为了美观没有使用填满颜色图片,spinner的设置在stype.xml文件内,必要再设计.

2.数据库有时报错:
Database Inspector:

Error reading Sqlite database: Database 'LiveSqliteDatabaseId(path=/data/data/com.example.theseventhexperiment/databases/contact_db.db, name=contact_db.db, connectionId=1) not found

但是项目仍可正常运行,推测是版本问题或者数据库没有及时断开毗连
3.运行卡顿问题，代码待优化
工程文件:
通过网盘分享的文件：TheSeventhExperiment.zip
链接: https://pan.baidu.com/s/1gLrwrdai95-mHhRDfBieXw?pwd=h42a提取码: h42a
gitee:android studio: 移动应用开发实验代码

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