Android OnLongClickListener not firing on MapView

Question

Hi,

I just registered an OnLongClickListener on my my MapView on an Android app I'm currently writing. For some reason however the onLongClick event doesn't fire.

Here's what I've written so far:

public class FriendMapActivity extends MapActivity implements OnLongClickListener {
    private static final int CENTER_MAP = Menu.FIRST;
    private MapView mapView;
    private MapController mapController;
    //...
    private boolean doCenterMap = true;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.friendmapview);
     this.mapView = (MapView) findViewById(R.id.map_view);
     this.mapController = mapView.getController();

     mapView.setBuiltInZoomControls(true);
     mapView.displayZoomControls(true);
     mapView.setLongClickable(true);
     mapView.setOnLongClickListener(new OnLongClickListener() {
      public boolean onLongClick(View v) {
       //NEVER FIRES!!
       return false;
      }
     });

     //...
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
     switch (keyCode) {
     case KeyEvent.KEYCODE_3:
      mapController.zoomIn();
      break;
     case KeyEvent.KEYCODE_1:
      mapController.zoomOut();
      break;
     }
     return super.onKeyDown(keyCode, event);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
     int actionType = ev.getAction();
     switch (actionType) {
     case MotionEvent.ACTION_MOVE:
      doCenterMap = false;
      break;
     }

     return super.dispatchTouchEvent(ev);
    }

        ...
}

May overlays which I'm adding cause the problem?? Any suggestions?

Answer 1

In the mean time I found the "solution" (or workaround, call it as you like) by myself. The way I worked through this issue is by using a GestureDetector and forwarding all touch events to that object by implementing an according OnGestureListener interface.

I've posted some code on my blog if anyone is interested: http://blog.js-development.com/2009/12/mapview-doesnt-fire-onlongclick-event.html

Don't ask me why this didn't work by hooking up the OnLongClickListener directly on the MapView. If someone has an explanation let me know :)

UPDATE:
My previously suggested solution using a GestureDetector posed some drawbacks. So I updated the blog post on my site.