Instance Method

application(_:willChangeStatusBarOrientation:duration:)

Tells the delegate when the interface orientation of the status bar is about to change.

Declaration

optional func application(_ application: UIApplication, willChangeStatusBarOrientation newStatusBarOrientation: UIInterfaceOrientation, duration: TimeInterval)

Parameters

application

Your singleton app object.

newStatusBarOrientation

A constant that indicates the new orientation of the app’s user interface; see Responding to App State Changes and System Events for details.

duration

The duration of the animation to the new orientation, in seconds.

Discussion

The delegate typically implements this method to prepare its windows and views for the new orientation. The delegate can get the current device orientation from the shared UIDevice object.

After calling this method, the app also posts a UIApplicationWillChangeStatusBarOrientation notification to give interested objects a chance to respond to the change.