ios - 自定义 UIModalPresentationStyle.custom : Why does presentationController(forPresented get called but not animationController(forPresented?

Question

我正在使用 UIModalPresentationStyle.custom。

在我的 UIViewControllerTransitioningDelegate 中，为什么会调用此方法:

func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController?

但是这些函数都没有被调用:

func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning?

func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning?

func interactionControllerForPresentation(using animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning?

func interactionControllerForDismissal(using animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning?

Answer 1

确保在调用时将 animated Bool 设置为 true

present(viewController, animated: true, completion: nil)

和

dismiss(animated: true, completion: nil)