On my simulator, a UITabBar appears to react to mouse clicks up to about 10 pixels above the visible bar. On the phone, it is hard to tell what is going on, but my experience has been that if I put a button right up against the tab bar, users will frequently aim for the button but end up tapping the tab bar, which can be extremely confusing and disconcerting.
To avoid these problems, I would like to shrink the active region of the tab bar.
Is that possible?
EDIT: The tab bar is being controlled by a tab bar controller.