Überprüfen Sie, ob der Dienst im Hintergrund ausgeführt wird

// function that check if service is running in the background

 private boolean isMyServiceRunning(Context context) {
        ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
            if (BackgroundLocationUpdateService.class.getName().equals(service.service.getClassName())) {
                Log.e("isMyServiceRunning?", true + "");
                return true;
            }
        }
        Log.i("isMyServiceRunning?", false + "");
        return false;
    }
Mohamed Boumlyk