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

activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
activityIndicator.hidesWhenStopped = YES;
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:activityIndicator];

Place the following where ever is needed:

[activityIndicator startAnimating];
[activityIndicator stopAnimating];