只要刷一个UIPageViewController，什么函数被调用？

Question

无论何时刷一个UIPageView，我都需要执行另一个函数。

Answer 1

顺应UIPageViewControllerDelegate和实现以下方法：

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

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

Answer 2

退房的UIPageViewControllerDelegate。您可能正在寻找pageViewController(_:didFinishAnimating:previousViewControllers:transitionCompleted:)