Bringing a subview to be in front of all other views

Question

I am working on integrating an ad provider into my app currently. I wish to place a fading message in front of the ad when the ad displays but have been completely unsuccess

Answer 1

Let me make a conclusion. In Swift 5

You can choose to addSubview to keyWindow, if you add the view in the last. Otherwise, you can bringSubViewToFront.

let view = UIView()
UIApplication.shared.keyWindow?.addSubview(view)
UIApplication.shared.keyWindow?.bringSubviewToFront(view)

You can also set the zPosition. But the drawback is that you can not change the gesture responding order.

view.layer.zPosition = 1