Google Map-Android Centering and Zooming?

Question

I am trying focus the map on the marker at a certain zooming ratio. I've looked at a couple posts in stackoverflow and I couldn't see any reason why I am getting the following error:

java.lang.IllegalStateException: Error using newLatLngBounds(LatLngBounds, int): Map size can't be 0

Most likely, layout has not yet occured for the map view. Either wait until layout has occurred or use newLatLngBounds(LatLngBounds, int, int, int) which allows you to specify the map's dimensions.

The code that I am using is:

private void setUpMap(String address) throws IOException {
  Geocoder gc = new Geocoder(this);
  List<Address> list = gc.getFromLocationName(address, 1);
  Address add = list.get(0);
  double Longitude = add.getLongitude();
  double Latitude= add.getLatitude();
  Marker m = mMap.addMarker(new MarkerOptions().position(new LatLng(Latitude, Longitude)).title(address));
  LatLngBounds.Builder builder = new LatLngBounds.Builder();
  builder.include(m.getPosition());
  LatLngBounds bounds = builder.build();
  mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 10));
}

I debugged the code, and it is throwing the previous exception on the line

mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 10));

Any suggestion here? thanks...

Answer 1

In order to use just one location from an address, and set the zoom on that one marker, you can use CameraPosition instead of LatLngBounds.

I just tested this, and it works:

private void setUpMap(String address) throws IOException {
        Geocoder gc = new Geocoder(this);
        List<Address> list = gc.getFromLocationName(address, 1);
        Address add = list.get(0);
        double Longitude = add.getLongitude();
        double Latitude= add.getLatitude();
        Marker m = mMap.addMarker(new MarkerOptions().position(new LatLng(Latitude, Longitude)).title(address));

        //not needed:
        //LatLngBounds.Builder builder = new LatLngBounds.Builder();
        //builder.include(m.getPosition());
        //LatLngBounds bounds = builder.build();
        //mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 10));

        //use CameraPosition instead:
        LatLng latLng = new LatLng(Latitude, Longitude);
        CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(latLng).zoom(14).build();

        //use animateCamera instead of moveCamera:
        mMap.animateCamera(CameraUpdateFactory
                .newCameraPosition(cameraPosition));
    }

Calling the method:

try {
    setUpMap("100 Market Street San Francisco CA");
} catch (IOException e) {
    e.printStackTrace();
}

Result:

Note that usually when using LatLngBounds, you would initially provide two points that are the Northeast and Southwest corners of the bounds.

Once those two bounds have been set, you can use the include() method to expand the bounds if necessary.

See Documentation:

https://developer.android.com/reference/com/google/android/gms/maps/model/LatLngBounds.html

https://developers.google.com/maps/documentation/android/views