通过广播在两个服务之间进行通信

Question

我尝试使用广播在两个服务之间发送一些数据。问题是：我的 Broadcast Receiver class 没有得到数据（没有从发送者那里得到任何数据）而且我不知道为什么。我将不胜感激任何帮助。谢谢

接收者-

public class Background extends Service  {

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

@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    return super.onStartCommand(intent, flags, startId);
}

public class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        String message = intent.getStringExtra(ActivityRecognizedService.LOCAL_BROADCAST_EXTRA);
        Log.e(TAG,message);
    }
}

发件人 -

public class ActivityRecognizedService extends Service {

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

@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    return super.onStartCommand(intent, flags, startId);
}

private void handleDetectedActivities(List<DetectedActivity> probableActivities) {

    Intent intent = new Intent(LOCAL_BROADCAST_NAME);
    intent.putExtra(LOCAL_BROADCAST_EXTRA, str.toString());
    //LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
    sendBroadcast(intent);
}

Answer 1

您需要在 onStartCommand 中注册您的接收器。比如，registerReceiver(new MyReceiver(),new IntentFilter(LOCAL_BROADCAST_NAME))

通过广播在两个服务之间进行通信

communication between two services by Broadcasts

java

android

broadcastreceiver

android-broadcast

android-broadcastreceiver