我正在开发一个应用程序，因为我只想在不连接互联网的情况下从gps获取纬度和经度。我尝试过，但在关闭wifi时无法获取纬度值0。如果打开wifi，我将获取正确的纬度值。是否有可能在不连接互联网的情况下仅从gps获取纬度值？

我的代码

  public class MainActivity extends Activity implements LocationListener{

    LocationManager locationManager ;
    String provider;

    private String strAdd;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
      //  requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
        setContentView(R.layout.activity_main);
      //  getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);

        // Getting LocationManager object
        locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);


            Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);

        //    locationManager.requestLocationUpdates(provider, 10, 30, this);

            if(location!=null){
                onLocationChanged(location);
            }
            else{
                Toast.makeText(getBaseContext(), "Location can't be retrieved",   
        Toast.LENGTH_SHORT).show();
            }

    }


    @Override
    public void onLocationChanged(Location location) {
        // Getting reference to TextView tv_longitude
        TextView tvLongitude = (TextView)findViewById(R.id.textView1);


        // Getting reference to TextView tv_latitude
        //TextView tvLatitude = (TextView)findViewById(R.id.tv_latitude);

        // Setting Current Longitude
        double lat = location.getLatitude();
        double lng = location.getLongitude();

      Log.e("LAT LNG", lat+lng+"");
        tvLongitude.setText("LAT LNG:" + lat+lng);



        // Setting Current Latitude
       // tvLatitude.setText("Latitude:" + location.getLatitude() );
    }

    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub
    }

}