iphone - How to add a HUD? (iOS) -

I'm trying to reveal some controls while pressing a button and when you press a different button it disappears Now the HUD is included in an image view, and in a UIView some custom buttons are called "credit". I have refused to use it:

  [credits removeFromSuperview];  

How can I retrieve it?

If it is a UIImageView, you should ...

  [Self.view addSubview: credit];  

... assuming you have not already released it. Aside from note, there is really good HD for iOS: