Place a pop over on a specific location

Question

Scenario: I have a UITabBar on the top of my view controller. There are a few buttons on the tabbar. When the user taps on any of the button I want to display a popover just under the button that has been tapped.

I can display the pop over with no problem but I can't figure out how to detect the location of the button that has been pressed, since the UITabItem doesn't expose a frame structure.

How can I solve my problem?

Answer 1

You can calculate the frame of the UITabBarItem on your own:

CGFloat tabItemWidth = tabBar.bounds.size.width / [tabBar.items count];
CGRect tabItemFrame = CGRectMake(tabItemWidth * [tabBar.items indexOfObject:tabBar.selectedItem], 0, tabItemWidth, tabBar.bounds.size.height);

(I haven't tried this code, but this or something like it should work).

Or, you should be able to subclass UITabBar and override touchesEnded:withEvent:. In that method, store the location of the touch in an ivar. Then in your UITabBarDelegate's tabBar:didSelectItem: you can use the touch's location.