持续的后台运行过程-即使不使用应用程序

Question

我正在与其他贡献者合作开发一个Android应用程序的开源项目。每当打开应用程序时，我们都会收到一条通知，通知您该应用程序在后台运行，即使该应用程序会话终止了，该通知也不会消失。 Here is the link for the project

该应用程序有很多类，这可能是原因，但我们无法缩小范围。尽管我们确实认为可能是使用蓝牙信号的BluetoothService活动。该通知会在应用程序启动后发出，然后停留在该位置。

public class BluetoothService extends Service {

private static final Long TIMEOUT = Long.valueOf(2000);
private Application bluetoothApplication = null;
private static final String CHANNEL_ID = "BluetoothServiceChannel";
private static final String TAG = "BluetoothService";
private BluetoothScanner bluetoothScanner = null;
private BluetoothAdvertiser bluetoothAdvertiser = null;

public static final String ADVERTISE_FAILED =
        "com.example.android.bluetoothadvertisements.advertising_failed";



@Override
public void onCreate() {
    super.onCreate();
    bluetoothApplication = getApplication();
    bluetoothAdvertiser = new BluetoothAdvertiser(bluetoothApplication.getApplicationContext(), BluetoothAdapter.getDefaultAdapter());
    bluetoothScanner = new BluetoothScanner(bluetoothApplication.getApplicationContext(), BluetoothAdapter.getDefaultAdapter());

}


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



private void sendFailureIntent(int errorCode) {
    Intent failureIntent = new Intent();
    failureIntent.setAction(ADVERTISE_FAILED);
    // failureIntent.putExtra(ADVERTISE_FAIL_EXTRA_CODE, errorCode);
    sendBroadcast(failureIntent);
}


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

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
        this.CreateChannelIfNeeded();

    Intent notificationIntent = new Intent(this, PhysicalDistancerActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
            notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, CHANNEL_ID);


    Notification notification = notificationBuilder.setOngoing(true)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle("App is running in background")
            .setPriority(NotificationManager.IMPORTANCE_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .build();

    startForeground(6, notification);
    bluetoothAdvertiser.startAdvertising();
    bluetoothScanner.startScanning();
    return START_STICKY;
}

private void CreateChannelIfNeeded() {
    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

        NotificationChannel channel = new NotificationChannel(CHANNEL_ID,
                "Channel human readable title",
                NotificationManager.IMPORTANCE_DEFAULT);
        notificationManager.createNotificationChannel(channel);
    }

}

@Override
public void onDestroy() {
   //  Toast.makeText(this, "service done", Toast.LENGTH_SHORT).show();
    // running = false;
   bluetoothAdvertiser.stopAdvertising();
    bluetoothScanner.stopScanning();
    stopForeground(true);
    super.onDestroy();
}
}

这可能是发布该应用程序时进行卸载的主要原因，因此任何输入都将非常有帮助。