You want to add a UIActivityIndicator in iOS SDK on top of a navigation bar button and you have searched everywhere for a solution. Wherever you went, they said “initialize your UIBarButtonItem with a custom view”. But you know what? That doesn’t quite do the trick.
What you want is this:
And they keep showing you a solution that does this:
To explain how you should do it the right way (first image), have a look at my screencast here. Make sure to leave a comment!