Android使用IntentService進(jìn)行apk更新示例代碼

2019-10-22 18:16:01

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供稿：網(wǎng)友

通常在使用service更新應(yīng)用時最常出現(xiàn)的問題就是Notification進(jìn)度的更新問題、service在什么時間關(guān)閉以及需要我們自己在Service中創(chuàng)建新的線程處理耗時操作，當(dāng)然這種也是可以實現(xiàn)的但是會顯得略微繁瑣

經(jīng)過對比發(fā)現(xiàn)可以使用IntentService已經(jīng)實現(xiàn)了對耗時操作的包裝出來，我們只需要實現(xiàn)IntentService中的onHandleIntent方法就可以在其中進(jìn)行耗時操作的處理，在處理下載問題時發(fā)現(xiàn)在使用intentservice時暫時沒有發(fā)現(xiàn)可以優(yōu)雅的進(jìn)行進(jìn)度回調(diào)的實現(xiàn)方法，所以我這邊使用了本地廣播的形式來進(jìn)行進(jìn)度刷新。

添加了當(dāng)前狀態(tài)判斷，當(dāng)應(yīng)用處于前臺狀態(tài)時直接進(jìn)行安裝，當(dāng)應(yīng)用處于后臺時彈出notification彈窗點擊后安裝，示例如下圖：

IntentService,apk更新,Android

先創(chuàng)建廣播

public static class MyBroadcastReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {      switch (intent.getAction()) {        case ACTION_TYPE_PREPARE:          if (downloadCallback != null) {            downloadCallback.onPrepare();          }          break;        case ACTION_TYPE_PROGRESS:          int progress = intent.getIntExtra("progress", 0);//          Log.d("progress", "|- " + progress + " -|");          if (downloadCallback != null) {            downloadCallback.onProgress(progress);          }          break;        case ACTION_TYPE_COMPLETE:          String file_path = intent.getStringExtra("file_path");          if (!TextUtils.isEmpty(file_path)) {            File file = new File(file_path);            if (file.exists()) {              if (downloadCallback != null) {                downloadCallback.onComplete(file);              }            }          }          break;        case ACTION_TYPE_FAIL:          String error = intent.getStringExtra("error");          if (downloadCallback != null) {            downloadCallback.onFail(error + "");          }          break;      }    }

然后在IntentService中初始化本地廣播并發(fā)送信息

@Override  public void onCreate() {    super.onCreate();    mLocalBroadcastManager = LocalBroadcastManager.getInstance(this);  }    // 在下載進(jìn)度刷新的地方進(jìn)行回調(diào)  private void progress(int progress) {    Intent intent = new Intent(FileDownloaderManager.ACTION_TYPE_PROGRESS);    intent.putExtra("progress", progress);    mLocalBroadcastManager.sendBroadcast(intent);  }    private void downApk(String url) {  .....  .....   progress(progress);  .....  .....  }

在activity中使用

mLocalBroadcastManager = LocalBroadcastManager.getInstance(mContext);mBroadcastReceiver = new MyBroadcastReceiver();IntentFilter intentFilter = new IntentFilter();intentFilter.addAction(ACTION_TYPE_PREPARE);intentFilter.addAction(ACTION_TYPE_PROGRESS);intentFilter.addAction(ACTION_TYPE_COMPLETE);intentFilter.addAction(ACTION_TYPE_FAIL);mLocalBroadcastManager.registerReceiver(mBroadcastReceiver, intentFilter);// ondestory時調(diào)用mLocalBroadcastManager.unregisterReceiver(mBroadcastReceiver);

以上源碼已進(jìn)行封裝，方便使用具體操作步驟如下：

|- 初始化及注冊回調(diào)

//初始化文件下載管理類FileDownloaderManager.init(context)// 注冊下載進(jìn)度監(jiān)聽，并開啟廣播接收FileDownloaderManager.registerDownload(object : FileDownloaderManager.DownloadCallback {      override fun onComplete(file: File) = mainView.downloadSucc(file)      override fun onFail(msg: String?) = Unit      override fun onProgress(progress: Int) = mainView.onProgress(progress)      override fun onPrepare() = Unit    })//開始下載FileDownloaderManager.download(url)

|- 在下載完成后進(jìn)行資源重置