Android: numbers near ImageButtons in RelativeLaylout

Question

So, I really want to try and put numbers near my ImageButtons (kinda like the iPhone badge notifications) to tell the user how many new items are in that directory.

One way I was thinking of doing this was to put an icon above my Button and then put a TextView that I would edit to update the number and hide when there were no new items.

Unfortunately, I can't figure out how to put things on top of one another in the layout page. :(