Question

so I’m facing an issue here that I’m sure many a developer before me has faced as well. I have my MapActivity class which creates an ItemizedOverlay class. The ItemizedOverlay has a OnTap even. When this OnTap event is fired I need to find a way to start an event in MapActivity class. It’s really quite simple.

So in More details I have:

public class Map extends MapActivity {
    private MapItemizedOverlay itemizedOverlay;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        itemizedOverlay = new MapItemizedOverlay();
    }
}
public class MapItemizedOverlay extends ItemizedOverlay<OverlayItem> {
    public MapItemizedOverlay() {

    }
    @Override
    protected synchronized boolean onTap(int index) {
        // I need to find a way to tell the instantiating class this happened!
    }
}

I realize I can do things like use static variables, timers, and things like that, but they just don’t seem like the best solution.

Answer 1

Option #1: Make the ItemizedOverlay be an inner class of the MapActivity, in which case you just call a method.

Option #2: Pass the MapActivity into the ItemizedOverlay (constructor or setter), in which case you just call a method on the activity.

BTW, onTap() will be called on the main application thread, so it is unlikely that you will need synchronized.