使用前台服务的 Android 9 后台位置跟踪

Question

我正在使用 android 融合位置客户端进行后台位置跟踪，即使应用程序从内存中清除，它也会运行。我正在为此使用前台服务。除了具有省电模式的三星 Galaxy 设备外，它在大多数设备上都能完美运行。我还在应用程序运行时添加了 ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS 的权限，但三星设备仍然无法完美跟踪。我还使用地理围栏意图服务和部分唤醒锁。此应用程序在所有其他设备上运行良好。请检查我用于后台位置的代码。这不是完整的代码。此外，当我启用位置吐司时，即使在三星上也能完美跟踪距离。但是当 Toasts 被禁用时，它只能在三星第一次使用。

/**********LocationUpdatesService class********/
public class LocationUpdatesService extends Service {
      @Override
    public void onCreate() {
        Log.i(TAG, "Service onCreate");
        mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);

        mLocationCallback = new LocationCallback() {
            @Override
            public void onLocationResult(LocationResult locationResult) {
                super.onLocationResult(locationResult);
                onNewLocation(locationResult.getLastLocation());
            }
        };

        createLocationRequest();
        if (checkPermissions()) {
            getLastLocation();
        }

      powerManager = (PowerManager) getSystemService(POWER_SERVICE);
      wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
        "myapp::MyWakelockTag");  
      wakeLock.acquire();
    }

    public void requestLocationUpdates() {
        Log.i(TAG, "Requesting location updates");
        //Utils.setRequestingLocationUpdates(this, true);
        startService(new Intent(getApplicationContext(), LocationUpdatesService.class));
        try {
            mFusedLocationClient.requestLocationUpdates(mLocationRequest,
                    mLocationCallback, Looper.myLooper());
        } catch (SecurityException unlikely) {
            //Utils.setRequestingLocationUpdates(this, false);
            Log.e(TAG, "Lost location permission. Could not request updates. " + unlikely);
        }
    }

       public void removeLocationUpdates() {
        Log.i(TAG, "Removing location updates");
        removeActivityUpdatesButtonHandler();
        try {
            mFusedLocationClient.removeLocationUpdates(mLocationCallback);
            wakeLock.release();
            stopForeground(true);
            stopSelf();
        } catch (SecurityException unlikely) {
            //Utils.setRequestingLocationUpdates(this, true);
            Log.e(TAG, "Lost location permission. Could not remove updates. " + unlikely);
        }
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.i(TAG, "Service started");
        boolean startedFromNotification = intent.getBooleanExtra(EXTRA_STARTED_FROM_NOTIFICATION,
                false);

        // We got here because the user decided to remove location updates from the notification.
        if (startedFromNotification) {
            //removeLocationUpdates();
            //stopSelf();
        }
        startForeground(NOTIFICATION_ID, getNotification());
        // Tells the system to not try to recreate the service after it has been killed.
        return START_STICKY;
    }

} 

我在我的主要活动中使用此绑定服务。以上只是示例代码，供大家参考。如果有人知道解决方案，请告诉我。对于带节电功能的三星设备，我只是遇到了麻烦。否则，我的服务运行良好，可以完美地跟踪距离。