What function is called whenever a UIPageViewController is swiped?

Question

I need to execute another function whenever an UIPageView is swiped.

Answer 1

Conform to UIPageViewControllerDelegate and implement the following methods:

func pageViewController(UIPageViewController, willTransitionTo: [UIViewController]) {
    // called when swiping begins
}

func pageViewController(UIPageViewController, didFinishAnimating: Bool, previousViewControllers: [UIViewController], transitionCompleted: Bool) {
    // called when swiping ends
}