Question

I have a MapActivity which has a touch event.

In the touch event:

• I get the current geocodes

• Put an overlay image on that location.

• and set it as the center of the mapview.

This seems to work fine and as expected for a while. But then the application force closes. I think the touch event is being fired like crazy even when nothing’s being touched. I know that because I had put a toast set up that shows the longitude and lattitude of the touched position. and it keeps showing up even when nothing’s touched.

I cant seem to accurately position the problem, let alone fixing it. Here’s the touch event for my mapActivity

private void LocationStuffs(double latitude, double longitude){
    itemizedOverlay.clear();
    itemizedOverlay.addOverlayItem((int)latitude, (int)longitude, "place"); 
    mapView.invalidate();
    mapView.getOverlays().add(itemizedOverlay);
    MapController mc = mapView.getController();
    mc.setCenter(new GeoPoint((int)latitude, (int)longitude)); 
    mc.setZoom(20);
}

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();
            latitude = p.getLatitudeE6() / 1E6;
            longitude = p.getLongitudeE6() / 1E6;
            LocationStuffs(latitude*1E6, longitude*1E6);
        }
        return false;
    }

Answer 1

Change your return statement to return true:

return true;

Basically, what that does is that it tells the system that you have handled the touchevent. Let me know if that solves it.