pageViewController(_:willTransitionTo:)
Called before a gesture-driven transition begins.
Declaration
optional func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController])Parameters
- pageViewController:
The page view controller.
- pendingViewControllers:
The view controllers that are being transitioned to.
Discussion
If the user aborts the navigation gesture, the transition doesn’t complete and the view controllers stay the same.