Android : Getting coordinates of location touch on google map in android

I want to get coordinates of location that is touched and pass it to another activity. Google map is shown in my activity but its touch event is not working. I want to get coordinates of location that is touch and start another activity passing these coordinates to another activity. Its my code:

public class MapActivity extends Activity {
    protected LocationManager locationManager;
    String stlatitude = null, stlongitude = null;
    private GoogleMap googleMap;
    String locationName = "";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Bundle b = getIntent().getExtras();
        stlatitude = b.getString("latitude");
        stlongitude = b.getString("longitude");
        locationName = b.getString("location_name");

        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        try {

            initilizeMap();

            googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
            googleMap.setMyLocationEnabled(true);
            MarkerOptions marker = new MarkerOptions().position(
                    new LatLng(Float.parseFloat(stlatitude), Float
                            .parseFloat(stlongitude))).title(locationName);
            googleMap.addMarker(marker);
            if (stlatitude != null || stlongitude != null) {
                LatLng myLatLng = new LatLng(Float.parseFloat(stlatitude),
                        Float.parseFloat(stlongitude));
                googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(
                        myLatLng, 12.0f));
            }

        } catch (Exception e) {
            e.printStackTrace();
        }

    }



    @Override
    protected void onResume() {
        super.onResume();
        initilizeMap();
    }


    private void initilizeMap() {
        if (googleMap == null) {
            googleMap = ((MapFragment) getFragmentManager().findFragmentById(
                    R.id.map)).getMap();

            // check if map is created successfully or not
            if (googleMap == null) {
                Toast.makeText(getApplicationContext(),
                        "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                        .show();
            }
        }
    }

    public boolean onTouchEvent(MotionEvent event, MapView mapView)
     {
     //---when user lifts his finger---
     if (event.getAction() == 1) {
     GeoPoint p = mapView.getProjection().fromPixels(
     (int) event.getX(),
     (int) event.getY());
     Toast.makeText(getBaseContext(),
     p.getLatitudeE6() / 1E6 + "," +
     p.getLongitudeE6() /1E6 ,
     Toast.LENGTH_SHORT).show();
     }
     return false;
     }
     }