Android maps Zoom not working

Question

Here's my code. I have 2 activities. 1. MainActivity 2. Mapsactivity. This zoom is not working. Except the zoom all works fine. Marker and everything

@Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;
        mMap.setOnMapLongClickListener(this);
        if(location!=-1 && location!=0) {
            locationManager.removeUpdates(this);
            LatLng latlng = MainActivity.locations.get(location);
            mMap.addMarker(new MarkerOptions().position(latlng).title(MainActivity.places.get(location)));
            mMap.moveCamera(CameraUpdateFactory.newLatLng(latlng));
            mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latlng), 15);
        }else{
            locationManager.requestLocationUpdates(provider, 400, 1, this);
        }
    }

Answer 1

If you are using SupportMapFragment then to enable zoom feature use this line of code :

googleMap.getUiSettings().setZoomControlsEnabled(true);

and to animate camera with zooming feature use this :

googleMap.animateCamera(CameraUpdateFactory.zoomTo(16), 5000, null);