是否可以仅在网络上获取 gps 坐标

Question

我正在创建使用服务在后台更新位置的应用程序。现在它由 gps 和网络提供商共同完成。但我只想使用网络提供商获取最后位置，因为 gps 会消耗大量电池。我在网上得到了我修改的代码如下

public class MyLocationServiceOne extends Service {
    private static final String TAG = "MyLocationService";
    private LocationManager mLocationManager = null;
    private static final int LOCATION_INTERVAL = 0;//MIN_TIME_BW_UPDATES 1 Minute
    private static final float LOCATION_DISTANCE = 0f;//MIN_DISTANCE_CHANGE_FOR_UPDATES

    private class LocationListener implements android.location.LocationListener
    {
        Location mLastLocation;
        public LocationListener(String provider)
        {
            Log.e(TAG, "LocationListener " + provider);
            mLastLocation = new Location(provider);
        }
        @Override
        public void onLocationChanged(Location location)
        {
            Log.e(TAG, "onLocationChanged: " + location);
            Log.e(TAG, "Location : " + location.getLatitude()+" , "+
                    location.getLongitude());
            mLastLocation.set(location);
            double lati=location.getLatitude();
            double longi=location.getLongitude();
            if(String.valueOf(lati)!=null&&String.valueOf(longi)!=null) {
                Toast.makeText(MyLocationServiceOne.this, String.valueOf(lati)+String.valueOf(longi), Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        public void onProviderDisabled(String provider)
        {
            Log.e(TAG, "onProviderDisabled: " + provider);
        }

        @Override
        public void onProviderEnabled(String provider)
        {
            Log.e(TAG, "onProviderEnabled: " + provider);
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras)
        {
            Log.e(TAG, "onStatusChanged: " + provider);
        }
    }

    LocationListener[] mLocationListeners = new LocationListener[] {
            //new LocationListener(LocationManager.GPS_PROVIDER),
            new LocationListener(LocationManager.NETWORK_PROVIDER)
    };

    @Override
    public IBinder onBind(Intent arg0)
    {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId)
    {
        Log.e(TAG, "onStartCommand");
        super.onStartCommand(intent, flags, startId);

        final LocationManager manager = (LocationManager) getSystemService( Context.LOCATION_SERVICE );
        if ( !manager.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {
            //buildAlertMessageNoGps();
        }
        return START_STICKY;
    }

    @Override
    public void onCreate()
    {
        Log.e(TAG, "onCreate");
        initializeLocationManager();
        try {
            mLocationManager.requestLocationUpdates(
                    LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
                    mLocationListeners[0]);

        } catch (java.lang.SecurityException ex) {
            Log.i(TAG, "fail to request location update, ignore", ex);
        } catch (IllegalArgumentException ex) {
            Log.d(TAG, "network provider does not exist, " + ex.getMessage());
        }
        /*try {
            mLocationManager.requestLocationUpdates(
                    LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
                    mLocationListeners[0]);
        } catch (java.lang.SecurityException ex) {
            Log.i(TAG, "fail to request location update, ignore", ex);
        } catch (IllegalArgumentException ex) {
            Log.d(TAG, "gps provider does not exist " + ex.getMessage());
        }*/

    }

    @Override
    public void onDestroy()
    {
        Log.e(TAG, "onDestroy");
        super.onDestroy();
        if (mLocationManager != null) {
            for (int i = 0; i < mLocationListeners.length; i++) {
                try {
                    mLocationManager.removeUpdates(mLocationListeners[i]);
                } catch (Exception ex) {
                    Log.i(TAG, "fail to remove location listners, ignore", ex);
                }
            }
        }
    }

    private void initializeLocationManager() {
        Log.e(TAG, "initializeLocationManager");
        if (mLocationManager == null) {
            mLocationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
        }
    }
}

但是只有当gps打开时它才会给出gps坐标。感谢您的帮助

Answer 1

通过 gps 获取位置对用户来说很痛苦，因为它会消耗大量电池，如您上面所述。您也可以 select 您的提供商，这是获取位置的来源，是网络还是 gps。这些都取决于您的位置需求和应用程序的其他一些逻辑。好吧，简而言之，我必须说你需要学习定位策略。这将使您更好地理解。请看这个here。

我会推荐你使用google的融合位置API。这使您可以更好地控制位置，这个 API 最好的部分是它的电池效率高，而且非常快速和可靠。 here is a link if you want to learn about it. and for some more code snippts and helping material see this, this and this 如果您使用的是 kotlin，它也非常先进，它有它的演示代码。

有什么困惑请教

是否可以仅在网络上获取 gps 坐标

Is it possible to get gps co ordinates on network only

gps

android

locationlistener