3
我已经实现了一个导航控制器，以便结合旋转盘类型的布局（将每个VC布局成一个整体旋转的圆形视图）。控制器被配置为使用自定义的过渡类，如下图所示： -Swift 3中的自定义转换不能正确转换
import UIKit
class RotaryTransition: NSObject, UIViewControllerAnimatedTransitioning {
let isPresenting :Bool
let duration :TimeInterval = 0.5
let animationDuration: TimeInterval = 0.7
let delay: TimeInterval = 0
let damping: CGFloat = 1.4
let spring: CGFloat = 6.0
init(isPresenting: Bool) {
self.isPresenting = isPresenting
super.init()
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
//Get references to the view hierarchy
let fromViewController: UIViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from)!
let toViewController: UIViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to)!
let sourceRect: CGRect = transitionContext.initialFrame(for: fromViewController)
let containerView: UIView = transitionContext.containerView
if self.isPresenting { // Push
//1. Settings for the fromVC ............................
// fromViewController.view.frame = sourceRect
fromViewController.view.layer.anchorPoint = CGPoint(x: 0.5, y: 3);
fromViewController.view.layer.position = CGPoint(x: fromViewController.view.frame.size.width/2, y: fromViewController.view.frame.size.height * 3);
//2. Setup toVC view...........................
containerView.insertSubview(toViewController.view, belowSubview:fromViewController.view)
toViewController.view.layer.anchorPoint = CGPoint(x: 0.5, y: 3);
toViewController.view.layer.position = CGPoint(x: toViewController.view.frame.size.width/2, y: toViewController.view.frame.size.height * 3);
toViewController.view.transform = CGAffineTransform(rotationAngle: 15 * CGFloat(M_PI/180));
//3. Perform the animation...............................
UIView.animate(withDuration: animationDuration, delay:delay, usingSpringWithDamping: damping, initialSpringVelocity: spring, options: [], animations: {
fromViewController.view.transform = CGAffineTransform(rotationAngle: -15 * CGFloat(M_PI/180));
toViewController.view.transform = CGAffineTransform(rotationAngle: 0);
}, completion: {
(animated: Bool) ->() in transitionContext.completeTransition(true)
})
} else { // Pop
//1. Settings for the fromVC ............................
fromViewController.view.frame = sourceRect
fromViewController.view.layer.anchorPoint = CGPoint(x: 0.5, y: 3);
fromViewController.view.layer.position = CGPoint(x: fromViewController.view.frame.size.width/2, y: fromViewController.view.frame.size.height * 3);
//2. Setup toVC view...........................
// toViewController.view.frame = transitionContext.finalFrame(for: toViewController)
toViewController.view.layer.anchorPoint = CGPoint(x: 0.5, y: 3);
toViewController.view.layer.position = CGPoint(x: toViewController.view.frame.size.width/2, y: toViewController.view.frame.size.height * 3);
toViewController.view.transform = CGAffineTransform(rotationAngle: -15 * CGFloat(M_PI/180));
containerView.insertSubview(toViewController.view, belowSubview:fromViewController.view)
//3. Perform the animation...............................
UIView.animate(withDuration: animationDuration, delay:delay, usingSpringWithDamping: damping, initialSpringVelocity: spring, options: [], animations: {
fromViewController.view.transform = CGAffineTransform(rotationAngle: 15 * CGFloat(M_PI/180));
toViewController.view.transform = CGAffineTransform(rotationAngle: 0);
}, completion: {
//When the animation is completed call completeTransition
(animated: Bool) ->() in transitionContext.completeTransition(true)
})
}
}
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return duration;
}
}
的意见如何运动的表示是显示在下面......两个红色区域是问题，后面会解释插图
。
呈现（推）翻译工作正常 - 2移动到1和3移动到2.然而，解雇（流行）翻译没有，从而解雇VC看起来正确地移动（2移动到3），但呈现（前一个）VC到达或者在错误的地方或者尺寸大小不正确的地方...
与类一样，翻译导致2移动到3（正确），但是1移动到4该视图的尺寸正确，但似乎偏离了预期位置的看似任意的距离。我从此尝试了各种不同的解决方案。
在弹出部我试图将下面的行（在代码注释）： -
toViewController.view.frame = transitionContext.finalFrame(for: toViewController)
...，但VC现在最终被收缩（1个移动至5）。我希望有人能看到我正在犯的可能的愚蠢错误。我试着简单地将push部分复制到pop部分（并反转所有内容），但它不起作用！
仅供参考......那些需要知道如何来装过渡到一个UINavigationController - 在UINavigationControllerDelegate添加到您的导航控制器，具有以下功能一起...
func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationControllerOperation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
let transition: SwingTransition = SwingTransition.init(isPresenting: (operation == .push ? true : false))
return transition;
}
下图显示了所有意见将共享相同的始发点（用于翻译）。目标是给出一个左轮手枪桶将每个VC移动到视野中的错觉。顶部中央视图表示查看窗口，显示堆栈中的第三个视图。道歉对穷人的视觉效果......
代码复习_and_问题解决，不错的工作！ – jrturton
这看起来像我期待的答案，它非常接近......不幸的是，过渡似乎来自不同的位置，破坏了视图固定在旋转光盘上的错觉。我放慢了动画速度，一些奇怪的原因，向左移动的视图来自视图右侧的某个位置，而右侧的视图来自左侧的某个位置。我试过在半宽处添加，但它们似乎没有效果 – NickSaintJohn
想象一下，视图是左轮手枪中的子弹，而枪管就是视窗。他们应该从相同的翻译来源旋转。我仍然试图调整，但没有得到任何地方 – NickSaintJohn