Question

我正在使用android融合位置客户端进行后台位置跟踪，即使从内存中清除了该应用程序，该客户端也将继续运行。我为此使用前台服务。除了具有省电模式的Samsung Galaxy设备外，它对于大多数设备都运行完美。我还为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。我还使用了地理围栏意图服务以及部分唤醒锁。这个应用程式可以在其他所有装置上正常运作。请检查我用于背景位置的代码。这不是完整的代码。另外，当我启用位置祝酒功能时，即使在三星上，距离也可以完美追踪。但是，当禁用烤面包片时，则只能在三星中首次使用。

/**********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;
    }

}

我在主要活动中正在使用此绑定服务。上面只是示例代码，供任何人参考。如果有人知道解决方案，请告诉我。对于带有节电器的三星设备，我只是遇到麻烦。否则，我的服务将无法正常工作并且可以完美地跟踪距离。

使用前台服务的Android 9背景位置跟踪

0 个答案: