Ios 如何添加屏幕边缘平移手势识别器来处理此pop动画？
我将Ios 如何添加屏幕边缘平移手势识别器来处理此pop动画？,ios,swift,uinavigationcontroller,Ios,Swift,Uinavigationcontroller,我将UINavigationController子类化，并创建了一个处理推送和弹出转换的非交互式动画对象。要完成此操作，我如何添加UIScreenedGePangestureRecognitor来处理下面的自定义pop动画？我有点不知道从这里到哪里去，所以任何帮助都会很好，谢谢 class CustomNavigationController: UINavigationController { override func viewDidLoad() { super.vi
UINavigationControllerUIScreenedGePangestureRecognitorclass CustomNavigationController: UINavigationController {
override func viewDidLoad() {
super.viewDidLoad()
delegate = self
isNavigationBarHidden = true
}
}
extension CustomNavigationController: UINavigationControllerDelegate {
// noninteractive animator objects
func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationControllerOperation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
switch operation {
case .push:
return CustomPushAnimator()
case .pop:
return CustomPopAnimator()
default:
return nil
}
}
// the interactive animator controller
func navigationController(_ navigationController: UINavigationController, interactionControllerFor animationController: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {
switch animationController {
case is CustomPopAnimator:
return CustomInteractiveController()
default:
return nil
}
}
// the noninteractive push animator
class CustomPushAnimator: NSObject, UIViewControllerAnimatedTransitioning {
// push transition duration
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return 0.2
}
// push transition animation
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
let viewWidth = UIScreen.main.bounds.width
let viewHeight = UIScreen.main.bounds.height
let containerView = transitionContext.containerView
let toViewController = transitionContext.viewController(forKey: .to)
containerView.addSubview((toViewController?.view)!)
toViewController?.view.frame = CGRect(x: viewWidth, y: 0, width: viewWidth, height: viewHeight)
UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0, options: UIViewAnimationOptions.curveEaseInOut, animations: {
toViewController?.view.frame = CGRect(x: 0, y: 0, width: viewWidth, height: viewHeight)
}, completion: { finished in
transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
})
}
}
// the noninteractive pop animator
class CustomPopAnimator: NSObject, UIViewControllerAnimatedTransitioning {
// pop transition duration
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return 0.2
}
// pop transition animation
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
let viewWidth = UIScreen.main.bounds.width
let viewHeight = UIScreen.main.bounds.height
let containerView = transitionContext.containerView
let fromViewController = transitionContext.viewController(forKey: .from)
let toViewController = transitionContext.viewController(forKey: .to)
containerView.insertSubview((toViewController?.view)!, belowSubview: (fromViewController?.view)!)
UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0, options: UIViewAnimationOptions.curveEaseInOut, animations: {
fromViewController?.view.frame = CGRect(x: viewWidth, y: 0, width: viewWidth, height: viewHeight)
}, completion: { finished in
fromViewController?.view.removeFromSuperview()
transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
})
}
}
class CustomInteractiveController: NSObject, UIViewControllerInteractiveTransitioning {
func startInteractiveTransition(_ transitionContext: UIViewControllerContextTransitioning) {
// I think the edge screen pan gesture goes here? Again, any advice is greatly appreciated!
}
}
通常，编写交互式自定义过渡动画的过程是：
nilstartinteractivatetransition（\uo:）updateInteractiveTransition（:）finishInteractiveTransitioncancelInteractiveTransitionCompletTransition（：）animationEnded过去，您可以使用UIPercentDrivenTerractiveTransition对象来帮助您，但现在（iOS 10及更高版本）我的自定义转换动画总是使用UIViewPropertyAnimator；要做到这一点，首先必须重写整个代码。我通常保留三个实例属性：UIViewPropertyAnimator、转换上下文（因为手势识别器需要一个引用），以及一个Bool标志，表明这是否是一个交互式动画（因为同一代码可以重复用于同一动画的交互式和非交互式版本）.对于否决这一问题的人，我希望能给他一个理由。我花了很多时间来研究和编写这段代码，我问了一个非常具体的问题，给出了什么？你找到了如何将它们联系在一起的答案了吗？我也找不到。我采纳了你的建议，使用
UIViewPropertyAnimatoruipercentdriventeractivatetransitionUIViewPropertyAnimator