Add UIActivityIndicatorView into UIBarButton

Question

How do I add a UIActivityIndicatorView spinner circle into a UIBarButton, so that when a user taps on one of those buttons on the navigation bar, they see a spinner while the lo

Answer 1

UIActivityIndicatorView is a type of view. Set its frame to be within your button and use -addSubview to add it to the view hierarchy of the UIBarButton.

I'm oversimplifying, since you have to try to make it fit the space (possibly by scaling) and center it...