3
我已經實現了一個導航控制器，以便結合旋轉盤類型的佈局（將每個VC佈局成一個整體旋轉的圓形視圖）。控制器被配置爲使用自定義的過渡類，如下圖所示： -Swift 3中的自定義轉換不能正確轉換
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;
}
}
的意見如何運動的表示是顯示在下面......兩個紅色區域是問題，後面會解釋插圖
。
呈現（推）翻譯工作正常 - 2移動到1和3移動到2.然而，解僱（流行）翻譯沒有，從而解僱VC看起來正確地移動（2移動到3），但呈現（前一個）VC到達或者在錯誤的地方或者尺寸大小不正確的地方...
與類一樣，翻譯導致2移動到3（正確），但是1移動到4該視圖的尺寸正確，但似乎偏離了預期位置的看似任意的距離。我從此嘗試了各種不同的解決方案。
在彈出部我試圖將下面的行（在代碼註釋）： -
toViewController.view.frame = transitionContext.finalFrame(for: toViewController)
...，但VC現在最終被收縮（1個移動至5）。我希望有人能看到我正在犯的可能的愚蠢錯誤。我試着簡單地將push部分複製到pop部分（並反轉所有內容），但它不起作用！
僅供參考......那些需要知道如何來裝過渡到一個UINavigationController - 在UINavigationControllerDelegate添加到您的導航控制器，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;
}
下圖顯示了所有意見將共享相同的始發點（用於翻譯）。目標是給出一個左輪手槍桶將每個VC移動到視野中的錯覺。頂部中央視圖表示查看窗口，顯示堆棧中的第三個視圖。道歉對窮人的視覺效果......
代碼複習_and_問題解決，不錯的工作！ – jrturton
這看起來像我期待的答案，它非常接近......不幸的是，過渡似乎來自不同的位置，破壞了視圖固定在旋轉光盤上的錯覺。我放慢了動畫速度，一些奇怪的原因，向左移動的視圖來自視圖右側的某個位置，而右側的視圖來自左側的某個位置。我試過在半寬處添加，但它們似乎沒有效果 – NickSaintJohn
想象一下，視圖是左輪手槍中的子彈，而槍管就是視窗。他們應該從相同的翻譯來源旋轉。我仍然試圖調整，但沒有得到任何地方 – NickSaintJohn