我面临一个奇怪的问题。当我使用WIFI时,我的应用程序在地图上显示当前位置,但当我关闭WIFI以使用GPS检查时,它仍显示当前位置但不显示地图。它使地图消失并显示当前位置。有人告诉我它为什么会发生?这是我的代码:
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
mapController = mapView.getController();
me = new MyLocationOverlay(this, mapView);
me.enableMyLocation();
mapView.getOverlays().add(me);
mapController.setZoom(10);
mapView.invalidate();
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// locationManager.requestLocationUpdates(
// LocationManager.NETWORK_PROVIDER, 0, 0, new GeoUpdateHandler());
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 0, 0, new GeoUpdateHandler());
}
@Override
protected void onDestroy() {
me.disableMyLocation();
super.onDestroy();
}
@Override
protected void onPause() {
super.onPause();
me.disableMyLocation();
}
@Override
protected boolean isRouteDisplayed() {
return false;
}
public class GeoUpdateHandler implements LocationListener {
// @Override
public void onLocationChanged(Location location) {
int lat = (int) (location.getLatitude() * 1E6);
int lng = (int) (location.getLongitude() * 1E6);
GeoPoint point = new GeoPoint(lat, lng);
Toast.makeText(getApplicationContext(), "lat and lng"+lat+lng , Toast.LENGTH_SHORT).show();
mapController.setZoom(18);
mapController.animateTo(point); // mapController.setCenter(point);
mapView.invalidate();
}
答案 0 :(得分:0)
GPS与互联网无关,但如果您想显示MAP,那么您就拥有互联网......您可以在没有互联网的情况下获得GPS .....所以无需担心