在iOS 8.3中将子视图添加到UIWindow

Question

In one place in my app i was adding an overlay to the key window as a overlay.After updating my iPad to 8.4 that stopped working.Is there anything that needs to be considered that has been changed over the iOS Versions?

    UIApplication.sharedApplication().delegate?.window!!.addSubview(thankYouOverlayView)

PS thankYouOverlayView can be added to self.view as subview but i need it to be at the top level.

Answer 1

As others have stated, adding directly to the window is generally not a good idea. You can do it, but it's better to have a specific view and view controller that you're adding the view to.

What I have found to be effective is to create a loop that finds the top most view and view controller and add the view to that. I've never had an issue with that from iOS 6 up through the current iOS 9 beta.