Swift 自定义过渡不起作用（未调用 UIViewControllerTransitioningDelegate）

Question

我只是想切换到第二个视图控制器。我的 HomeViewController 有这个扩展：

extension HomeViewController: UIViewControllerTransitioningDelegate {
    func animationController(forPresented presented: UIViewController,
                             presenting: UIViewController,
                             source: UIViewController)
        -> UIViewControllerAnimatedTransitioning? {
        return transition
    }

    public func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        return nil
    }
}

和class

中定义的转换

let transition = PopAnimator()

我有一个按钮，当它被点击时应该切换视图控制器并使用自定义过渡 (PopAnimator)：

@objc func handleTap() {
        let viewController = ViewController()
        viewController.transitioningDelegate = self
        self.present(viewController, animated: false, completion: nil)
    }

PopAnimator class（现在真的只是淡入）：

class PopAnimator: NSObject, UIViewControllerAnimatedTransitioning {
    let duration = 1.0
    var presenting = true
    var originFrame = CGRect.zero

    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return duration
    }

    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        let containerView = transitionContext.containerView

        let toView = transitionContext.view(forKey: .to)!

        containerView.addSubview(toView)
        toView.alpha = 0.0
        UIView.animate(withDuration: duration,
        animations: {
            toView.alpha = 1.0
        },
        completion: { _ in
            transitionContext.completeTransition(true)
        }
        )
    }
}

当我单击按钮时，它会切换 viewControllers 但不会使用我的自定义过渡。如果我在我的 animationController(forPresented:presenting:source:) 函数或我的 PopAnimator class 中放置一个断点，它就不会到达。

Answer 1

        self.present(viewController, animated: false, completion: nil)

如果您想要动画过渡，请尝试设置 animated: true

Swift 自定义过渡不起作用（未调用 UIViewControllerTransitioningDelegate）

Swift Custom Transition Not Working (UIViewControllerTransitioningDelegate not called)

animation

transition

transitions

uiviewanimationtransition

swift