Add a UIView above all, even the navigation bar

Question

I want to display, above any other views, even the navigation bar, a kind of \"pop-up\" view that looks like this:

• full screen black background with a 0.5 alph

Answer 1

I'd use a UIViewController subclass containing a "Container View" that embeds your others view controllers. You'll then be able to add the navigation controller inside the Container View (using the embed relationship segue for example).

See Implementing a Container View Controller