Question

我在片段android中有谷歌地图的代码，我想在我的位置相机，但相机在其他位置，我不知道为什么会发生这种情况任何人都可以帮我找出这种情况发生的原因

这是我的片段代码：

public class FragmentMap extends Fragment implements LocationListener {

MapView mapView;
GoogleMap map;
double latitude;
double longitude;
public String bestProvider;
public Criteria criteria;


@Override
public void onLocationChanged(Location location) {

    // Getting latitude of the current location
    latitude = location.getLatitude();

    // Getting longitude of the current location
    longitude = location.getLongitude();

    // Creating a LatLng object for the current location
    LatLng latLng = new LatLng(latitude, longitude);

    // Showing the current location in Google Map
    map.moveCamera(CameraUpdateFactory.newLatLng(latLng));

    // Zoom in the Google Map
    map.animateCamera(CameraUpdateFactory.zoomTo(15));

}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onProviderDisabled(String provider) {

}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.map_fragment, container, false);

    // Gets the MapView from the XML layout and creates it
    mapView = (MapView) v.findViewById(R.id.mapview);
    mapView.onCreate(savedInstanceState);

    // Gets to GoogleMap from the MapView and does initialization stuff
    map = mapView.getMap();
    map.getUiSettings().setMyLocationButtonEnabled(false);
    map.setMyLocationEnabled(true);


    // Needs to call MapsInitializer before doing any CameraUpdateFactory calls
    MapsInitializer.initialize(this.getActivity());

    // Updates the location and zoom of the MapView
    map.setMyLocationEnabled(true);

    criteria = new Criteria();
    bestProvider = String.valueOf(MainActivity.locationManager.getBestProvider(criteria, true)).toString();
    Location location = MainActivity.locationManager.getLastKnownLocation(bestProvider);

    if (location != null) {
        onLocationChanged(location);
    }

    CameraUpdate cameraUpdate =
            CameraUpdateFactory
                    .newLatLngZoom(new LatLng(location.getLatitude(), location.getLongitude()), 16);
    map.animateCamera(cameraUpdate);

    return v;
}

@Override
public void onResume() {
    mapView.onResume();
    super.onResume();
}

@Override
public void onDestroy() {
    super.onDestroy();
    mapView.onDestroy();
}

@Override
public void onLowMemory() {
    super.onLowMemory();
    mapView.onLowMemory();
}

}

这是我的位置声明：

public static LocationManager locationManager;
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

Answer 1

你的onlocationchange应该是 -

@Override
public void onLocationChanged(Location location) {

CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(new LatLng(location.getLatitude(), location.getLongitude()))
                .zoom(14)
                .build();

if (map != null) {
    map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
}

}

这会将相机移动到您当前的位置。

让我知道它是否适合你。

为什么谷歌地图相机不在我的位置？

1 个答案: