如何反转此动画？ Swift 3

Question

这是我目前正在使用的动画，我想知道如何反转代码以使动画从右到左？

func leftToRightAnimation(duration: TimeInterval = 0.5, completionDelegate: AnyObject? = nil) { 

    // Create a CATransition object 
    let leftToRightTransition = CATransition() 

    // Set its callback delegate to the completionDelegate that was provided 
    if let delegate: CAAnimationDelegate = completionDelegate as! CAAnimationDelegate? { 
     leftToRightTransition.delegate = delegate 
    } 

    leftToRightTransition.type = kCATransitionPush 
    leftToRightTransition.subtype = kCATransitionFromRight 
    leftToRightTransition.duration = duration 
    leftToRightTransition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut) 
    leftToRightTransition.fillMode = kCAFillModeRemoved 

    // Add the animation to the View's layer 
    self.layer.add(leftToRightTransition, forKey: "leftToRightTransition") 

Answer 1

尝试：

leftToRightTransition.subtype = kCATransitionFromLeft