presentationControllerWillDismiss(_:)
Notifies the delegate before a presentation is dismissed.
Declaration
optional func presentationControllerWillDismiss(_ presentationController: UIPresentationController)Parameters
- presentationController:
The presentation controller managing the trait changes from your app.
Discussion
You can use this method to set up animations or interaction notifications with the presentationController’s transitionCoordinator.
This method is not called if the presentation is dismissed programmatically.