Don't allow user interaction when activity indicator view is visible

Question

I have a view which contains two views. One of those views contains two buttons and some text labels. The other one, with alpha set to 0.25, has an UIActivityIndicator

Answer 1

In Swift 3.0 To Disable interaction :-

UIApplication.shared.beginIgnoringInteractionEvents()

To restore interaction :-

UIApplication.shared.endIgnoringInteractionEvents()