在我重新启动WiFi /移动网络之前,服务中的Android位置监听器无效

我的位置监听器正常工作,收集数据没有任何问题.但有时它不会收集任何数据.此时我必须关闭并重新启动我的位置提供程序.重新启动修复了问题,但是,这可能不是用户期望做的最好的事情.

当我使用GPS作为提供者时,没有问题.

位置监听器在服务中工作.我无法理解这个问题.它是关于Android还是我的代码？

提前致谢.

您可以使用新的位置提供程序(FusedLocationProvider),它结合了来自不同位置提供程序的信息,因此,如果您的设备有可能获取位置,您将会知道它.当然,您应该在设备的偏好设置中启用应用的位置信息.

查看developers.android.com以获取有关此提供商的扩展信息.

这个解决方案对我来说很好：

public class FusedLocationListener implements GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener  {

    public interface LocationListener {
        public void onReceiveLocation(Location location);
    }

    private LocationListener mListener;

    public static final String TAG = "Fused";
    private LocationClient locationClient;
    private LocationRequest locationRequest;


    protected int minDistanceToUpdate = 1000;
    protected int minTimeToUpdate = 10*1000;

    protected Context mContext;


    @Override
    public void onConnected(Bundle bundle) {
        Log.d(TAG, "Connected");
        locationRequest = new LocationRequest();
        locationRequest.setSmallestDisplacement(1);
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locationRequest.setInterval(30000);
        locationRequest.setNumUpdates(1);
        locationClient.requestLocationUpdates(locationRequest, this);

    }

    @Override
    public void onDisconnected() {
        Log.d(TAG, "Disconnected");
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.d(TAG, "Failed");
    }


    private static FusedLocationListener instance;

    public static synchronized FusedLocationListener getInstance(Context context, LocationListener listener){
        if (null==instance) {
            instance = new FusedLocationListener(context, listener);
        }
        return instance;
    }


    private FusedLocationListener(Context context, LocationListener listener){
        mContext = context;
        mListener = listener;
    }


    public void start(){

        Log.d(TAG, "Listener started");
        locationClient = new LocationClient(mContext,this,this);
        locationClient.connect();

    }


    @Override
    public void onLocationChanged(Location location) {
        Log.d(TAG, "Location received: " + location.getLatitude() + ";" + location.getLongitude());
        //notify listener with new location
        mListener.onReceiveLocation(location);
    }


    public void stop() {
        locationClient.removeLocationUpdates(this);
    }
}

用法：

public class MyActivity extends Activity implements FusedLocationListener.LocationListener {

 @Override
    public void onCreate(Bundle savedInstanceState) {

      FusedLocationListener locationListener FusedLocationListener.getInstance(getApplicationContext(), this);             

       locationListener.start();
   }

@Override
    public void onReceiveLocation(Location location) {
       //handle location here
    }

}