Question

我正在使用UIViewControllerAnimatedTransitioning呈现自定义viewController过渡动画。

当前设置是触摸ViewController按钮，然后显示NextViewController。

我的动画以模态方式呈现NextViewController，尽管视图从底部向上滑动以覆盖上一个ViewController的四分之三，如下所示。

我可以关闭此呈现的视图，只需触摸我的一个连接按钮即可。我想要实现的是，当触摸了透明的黑暗区域时，我可以关闭显示的NextViewController。

唯一的问题是，暗区不是所提供的viewController的一部分，而是所呈现的viewController的一部分，并且不会调用touch事件。在该区域中处理触摸事件的正确方法是什么？从哪个VC有代码来处理它？</ p>

如果需要了解我的逻辑，请在这里放置我的UIViewControllerAnimatedTransitioning对象。

class ModalSheetTransitioning: NSObject, UIViewControllerAnimatedTransitioning {

// MARK: - Internal

let destinationMinYDivisor = CGFloat(5)
let downChevronXDiviser = CGFloat(2)
let animationSpringOptions = CGFloat(0.8)

// MARK: - Properties

var animationDuration: Double
var destinationCornerRadius: CGFloat
var presenting: Bool
var chevronDownImageView = UIImageView()

// MARK: - Init

init(animationDuration: Double? = 0.6, destinationCornerRadius: CGFloat? = 8.0, presenting: Bool? = true) {
    self.animationDuration = animationDuration!
    self.destinationCornerRadius = destinationCornerRadius!
    self.presenting = presenting!
}

// MARK: - UIViewControllerAnimatedTransitioning delegate

func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
    return self.animationDuration
}

func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {

    let containerView = transitionContext.containerView
    guard let toView = transitionContext.view(forKey: .to) else { return }
    guard let fromView = transitionContext.view(forKey: .from) else { return }
    var finalFrame = CGRect()

    if presenting {

        containerView.addSubview(toView)
        toView.alpha = 0.0
        toView.frame.y = (fromView.frame.maxY)
        finalFrame = CGRect(0, (toView.frame.height) / (self.destinationMinYDivisor), (toView.frame.width), (toView.frame.height) - ((toView.frame.height) / (self.destinationMinYDivisor)))


    } else {
        finalFrame = CGRect(0, (toView.frame.maxY), (toView.frame.width), (toView.frame.height) - ((toView.frame.height) / (self.destinationMinYDivisor)))
    }
    UIView.animate(withDuration: self.animationDuration,
                   delay: 0.0,
                   usingSpringWithDamping: animationSpringOptions,
                   initialSpringVelocity: animationSpringOptions,
                   animations: {
                    toView.alpha = 1.0
                    if self.presenting {
                        toView.frame = finalFrame
                    } else {
                        fromView.frame = finalFrame
                    }

    }, completion: { _ in
        transitionContext.completeTransition(true)
        // Re-add fromView to UIWindow as this gets completely removed by completeTransition!
        guard let window = UIApplication.shared.keyWindow else { return }
        if self.presenting {
            window.insertSubview(fromView, at: 0)
        }
    })
}

}

以及我如何遵守此协议。

extension ViewController: UIViewControllerTransitioningDelegate {

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

    presenting.view.layer.opacity = 1.0
    UIView.animate(withDuration: 1.0, animations: {
        presenting.view.layer.opacity = 0.2
    })

    return ModalSheetTransitioning(animationDuration: 1.0)
}

func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
    return ModalSheetTransitioning(presenting: false)

}

}

我像下面这样设置代表。

@IBAction func showNextView(_ sender: UIButton) {

        let nextViewController = storyboard?.instantiateViewController(withIdentifier: "next")
        let navigationController = UINavigationController(rootViewController: nextViewController!)
        navigationController.isNavigationBarHidden = true
        navigationController.transitioningDelegate = self
        self.navigationController?.present(navigationController, animated: true, completion: nil)

    }

所以只需要了解我将能够在哪里以及如何触摸暗区域以消除视图，而不是那些按钮之一？

上一个viewController上的自定义viewController过渡动画touch事件

0 个答案: