implements OnMapReadyCallback


mapfragment=(MapFragment)getFragmentManager().findFragmentById(R.id.mapfragment);
        mapfragment.getMapAsync(this);

gmap=googleMap;
       LatLng usm=new LatLng(5.356179, 100.302557);
       gmap.addMarker(new MarkerOptions().position(usm).title("U S M"));
       googleMap.moveCamera(CameraUpdateFactory.newLatLng(usm));

<meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="AIzaSyD4APLIFztXmh1h8nOp4wGTGZ-J4dSh7us"/>