How do I get the keyWindow reference in a swift app?

Question

In Objective-C in the viewDidLoad method of a UIViewController I do this to get the keyWindow reference in my iOS app:

 UIWindow * keyWindow = [[UIApplication sh         


        

Answer 1

The easiest way to do that is:

in Objective-C

[UIApplication sharedApplication].windows.firstObject

in Swift

UIApplication.shared.windows.first!

Note that this works only if you do not support multiple windows.