A notification indicating that UIKit added a scene to your app.
- iOS 13.0+Beta
- tvOS 13.0+Beta
When the user or your app requests a new instance of your user interface, UIKit creates an appropriate
UIScene object and places it in the
object property of the notification. Use this notification to respond to the addition of the new scene and to begin loading any data that the scene needs to display.
UIKit also calls the
scene(_: method of your scene delegate object.