// generate bounds that covers center map with half the width and height
LatLngBounds rectBounds = LatLngBounds.newInstance(LatLng.newInstance(
southWest.getLatitude() + latDelta, southWest.getLongitude()
+ lngDelta), LatLng.newInstance(northEast.getLatitude() - latDelta,
northEast.getLongitude() - lngDelta));
groundOverlay = new GroundOverlay("boot.jpg", rectBounds);
groundOverlay.addGroundOverlayVisibilityChangedHandler(new GroundOverlayVisibilityChangedHandler() {
public void onVisibilityChanged(
GroundOverlayVisibilityChangedEvent event) {
if (event.isVisible()) {