Harmony鸿蒙实战开发-背单词app「仿不背单词」【源码在文末】
Harmony鸿蒙实战开发-背单词app【源码在文末】运行工具：DevEco Studio
一、运行演示
1、登录
https://i-blog.csdnimg.cn/blog_migrate/a559ec1172fc6a419d87b2f3676bfb69.png 2、注册
https://i-blog.csdnimg.cn/blog_migrate/cc97cdcf1e487ad0835b0e2946db3382.png 3、开机动画
https://i-blog.csdnimg.cn/blog_migrate/3ce5396347a2f82ce51569499b810244.png 4、首页
https://i-blog.csdnimg.cn/blog_migrate/b59f601f5f0de6dcebcfd5fc03ce4794.png 5、开始学习
https://i-blog.csdnimg.cn/blog_migrate/b4ad9e9692c0a15af19d74ba3d4ba447.png 6、开始学习-看答案
https://i-blog.csdnimg.cn/blog_migrate/675d9bf00d26a34ae4a463653244b285.png 7、统计分析
https://i-blog.csdnimg.cn/blog_migrate/a57d4d6127f99beb45692226323c0e4a.png 8、不背学堂
https://i-blog.csdnimg.cn/blog_migrate/c522dcdc11794eb605cf1ebeab990af0.png 二、部门代码
import http from '@ohos.net.http';
import fs from '@ohos.file.fs';
import ReadOptions from "@ohos.file.fs"
import common from '@ohos.app.ability.common';
import buffer from '@ohos.buffer';
export namespace YouDaoDict {
const BUFFER_FILE_PATH = '/you_dao_dict_cache.json';
export type QueryResult = {
source: string;
pronunciation: {
en?: string;
us?: string;
};
meaning: Array<{
position?: string;
translation: string;
}>;
sentence: Array<{
sentence: string;
translation: string;
}>;
};
let queryCache: Record<string, QueryResult> = undefined;
async function loadLocalCache() {
let context = getContext(this) as common.UIAbilityContext;
let filePath = `${context.cacheDir}${BUFFER_FILE_PATH}`
let file: fs.File;
if (!await fs.access(filePath)) {
file = await fs.open(filePath, fs.OpenMode.CREATE | fs.OpenMode.READ_WRITE);
await fs.write(file.fd, '{}');
await fs.fdatasync(file.fd);
await fs.close(file);
}
queryCache = JSON.parse(await fs.readText(filePath, { encoding: 'UTF-8' }));
}
async function cacheQuery(word: string): Promise<QueryResult> {
if (queryCache === undefined) await loadLocalCache();
let result = queryCache;
if (result !== undefined) return result
return null;
}
async function cacheAdd(word: string, result: QueryResult): Promise<void> {
queryCache = result;
let serialized = JSON.stringify(queryCache);
let context = getContext(this) as common.UIAbilityContext;
let filePath = `${context.cacheDir}${BUFFER_FILE_PATH}`
let file = await fs.open(filePath, fs.OpenMode.WRITE_ONLY | fs.OpenMode.CREATE);
await fs.write(file.fd, serialized);
await fs.fsync(file.fd);
await fs.close(file);
}
export async function query(word: string): Promise<QueryResult> {
let result: QueryResult | null = await cacheQuery(word);
if (result) return result;
let httpReq = http.createHttp();
let httpResponse = await new Promise<http.HttpResponse>((resolve, reject) => {
httpReq.request(
'https://dict.youdao.com/jsonapi_s?doctype=json&jsonversion=4',
{
method: http.RequestMethod.POST,
header:{
'Content-Type':'application/x-www-form-urlencoded'
},
extraData: `q=${word}`
},
(err, data) => {
if (err !== undefined) reject(err);
resolve(data)
}
)
})
let res = JSON.parse(httpResponse.result.toString());
result = {
source: word,
pronunciation: {
en: res['ec']['word']['ukphone'] as string,
us: res['ec']['word']['usphone'] as string
},
meaning: [],
sentence: []
};
(res['ec']['word']['trs'] as Array<{
pos?: string;
tran: string
}>).forEach(elem => {
result.meaning.push({ position: elem.pos, translation: elem.tran });
});
(res['blng_sents_part']['sentence-pair'] as Array<{
sentence?: string;
'sentence-translation': string
}>).forEach(elem => {
result.sentence.push({ sentence: elem.sentence, translation: elem['sentence-translation'] });
})
cacheAdd(word, result);
return result;
}
}
三、源码
相关鸿蒙项目点此专栏
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