Google Map Not Showing (Zoom to) Current Location After Set Latitude and Longitude manually

Question

I want to show my current location using custom Latitude and Longitude, I have set latitude and longitude in Location object like this :

Location location = new Location ("");
location.setLatitude(lat);
location.setLongitude(lon);

After that I call onLocationChanged(location) method, where the method is like this :

@Override
public void onLocationChanged(Location location) {
    // TODO Auto-generated method stub

    mLatitude = location.getLatitude();
    mLongitude = location.getLongitude();
    LatLng latLng0 = new LatLng(mLatitude, mLongitude);

    mGoogleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng0));
    mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(12));

}

The map was show, but not showing my current location with blue dot like usual, anybody can help ?

Answer 1

You can try to run your code in GoogleMap.OnMapLoadedCallback Likes:

mGoogleMap.setOnMapLoadedCallback(new OnMapLoadedCallback(){
  @Override
  public void onMapLoaded() {
    mGoogleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng0));
    mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(12));
  }
});

Update:

mGoogleMap.setOnMapLoadedCallback(new OnMapLoadedCallback(){
      @Override
      public void onMapLoaded() {
        mGoogleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng0,12));
      }
    });

Using

mGoogleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng0,12));

Instead of

mGoogleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng0));
mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(12));

Because the code CameraUpdateFactory.zoomTo(12) is not set Latitude and Longitude, so the values will be inited with [0,0]. That's will let your map center to [0,0]