ios - swift 如何让动画在两个 UIView 之间翻转

Question

我正在尝试创建一个 IOS 应用程序并在按下某些按钮时翻转两个 View 。我找到了翻转动画，但我希望翻转在翻转 90° 时将内容更改为新 View ，而不是在动画完成时。这是我的功能:

func animationFlip(fromView:UIView, toView:UIView, animationTime:Float)
{

    UIView.animateWithDuration(NSTimeInterval(animationTime), animations: {

        UIView.setAnimationTransition(UIViewAnimationTransition.FlipFromRight, forView: fromView, cache: true)

        },completion:{completion in
            UIView.animateWithDuration(NSTimeInterval(animationTime), animations: { () -> Void in

                fromView.hidden = true;
                toView.hidden = false;
                UIView.setAnimationTransition(UIViewAnimationTransition.FlipFromRight, forView: toView, cache: true)


            })
    })
}

我发现这段代码似乎可以解决问题，但它是用 obj-c 编写的。如何翻译成swift？

[UIView transitionFromView:viewToReplace
        toView:replacementView
        duration:1
        options:UIViewAnimationOptionTransitionFlipFromBottom
        completion:nil];

提前致谢!

Answer 1

在 Swift 中:-

UIView.transitionFromView(viewToReplace, toView: replacementView, duration: 1, options: .TransitionFlipFromBottom, completion: { _ in })