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我有1 项活动和1 项服务。该服务将在Activity进入后台时启动，并在Activity进入前台时停止。当服务停止时，我想通过意图将一个对象从它发送到活动。这是我的代码

我的活动.java

private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(ACTION_WITH_RLM)) {                
        //I will get the object received by service here 
        }
    }
};

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_record_lesson_ins);

    localBroadcastManager = LocalBroadcastManager.getInstance(this);
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ACTION_WITH_RLM);
    localBroadcastManager.registerReceiver(broadcastReceiver, intentFilter);
}

@Override
protected void onResume() {
    super.onResume();
    if (intent != null) {
        stopService(intent);
    }
}

@Override
protected void onPause() {
    super.onPause();
    if (intent != null) {
        startService(intent);
    }
}

@Override
protected void onStop() {
    super.onStop();
    localBroadcastManager.unregisterReceiver(broadcastReceiver);
}

我的服务.java

private RecordLessonModel recordLessonModel;

@Nullable
@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public void onCreate() {
    super.onCreate();
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    //I code sth for handle recordLessonModel object
    return START_STICKY;
}

@Override
public void onDestroy() {
    super.onDestroy();
    Intent intent = new Intent(MyActivity.ACTION_WITH_RLM);
    intent.putExtra(MyActivity.RECORD_MODEL_NAME, Parcels.wrap(recordLessonModel));
    LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}

这里的问题是当我的活动进入前台时，我broadcastReceiver的 inMyActivity无法接收来自服务的意图。我不知道为什么。

谢谢。

4

1 回答 1

1

您应该考虑将您的广播接收器注销onDestory()，而不是onStop()

因为当活动进入后台时，您的 brodcastReceiver 正在取消注册。

更多看这里

于 2017-04-05T06:20:14.580 回答