Map.java

public class MapsFragment extends Fragment implements OnMapReadyCallback {

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View rootView = inflater.inflate(R.layout.fragment_maps, container, false);

        SupportMapFragment mapFragment = (SupportMapFragment) this.getChildFragmentManager().
                findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

        if (getActivity()!=null)
            CheckConnection.CheckConn(getActivity().getApplicationContext(), rootView);

        return rootView;
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {

        try {
            // Add a marker in Sydney and move the camera
            LatLng kanalAvrupa = new LatLng(51.449930, 6.738619);
            googleMap.addMarker(new MarkerOptions().position(kanalAvrupa).title(getString(R.string.kaih)).snippet(getString(R.string.snippet_str))).showInfoWindow();

            CameraPosition cameraPosition = new CameraPosition.Builder()
                    .target(kanalAvrupa)
                    .zoom(18.3f)
                    .tilt(30)
                    .build();
            googleMap.moveCamera(CameraUpdateFactory.newLatLng(kanalAvrupa));
            googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
        } catch (Exception e) {
            Toast.makeText(getActivity(), R.string.nomap, Toast.LENGTH_LONG).show();
        }
    }
}