Android?BroadcastReceiver 千萬不要做耗時的操作，如果有耗時的操作，請讓OnReceive 中調(diào)用service。

@Override public void onReceive(Context context, Intent intent) {

try {afd = assetManager.openFd("notify.wav");mAm.requestAudioFocus(null,AudioManager.STREAM_MUSIC,AudioManager.AUDIOFOCUS_GAIN);MediaPlayer player = new MediaPlayer();player.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(), afd.getLength());player.prepare();player.start();player.setOnCompletionListener(new MediaPlayer.OnCompletionListener(){@Override public void onCompletion(MediaPlayer mp) {mAm.abandonAudioFocus(null);}}); } catch (IOException e) {e.printStackTrace(); } } 接到訂單播放提示語音，發(fā)現(xiàn)有時候不能播放出來！！ 后來改寫到service中 @Override public int onStartCommand(Intent intent, int flags, int startId) {AssetManager assetManager = getApplicationContext().getAssets();AssetFileDescriptor afd = null;try {afd = assetManager.openFd("notify.wav");mAm.requestAudioFocus(null,AudioManager.STREAM_MUSIC,AudioManager.AUDIOFOCUS_GAIN);MediaPlayer player = new MediaPlayer();player.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(), afd.getLength());player.prepare();player.start();player.setOnCompletionListener(new MediaPlayer.OnCompletionListener(){@Override public void onCompletion(MediaPlayer mp) {mAm.abandonAudioFocus(null);}});} catch (IOException e) {e.printStackTrace();}return START_STICKY;
然后在Onreceive 中調(diào)用service Toast.makeText(context, "收到了通知", Toast.LENGTH_SHORT).show(); Intent serviceIntent = new Intent(context, PlayMediaService.class); context.startService(serviceIntent);

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