如何知道什么时候一个coreanimation动画结束 [英] how to know when a coreanimation animation ends

问题描述

我在做一些动画核​​心动画，但我不能找到一个办法知道一个通​​知或事件时的动画效果块完成，像UIView的动画块你有

I'm doing some animations with core animation, but I can't found a way to know with a notification or event when the animation block has finish, like in UIVIew animation block you have

setAnimationDidStopSelector:

我怎么能在核心动画知道这一点，感谢您的帮助。

how can I know this in core animation, thanks for any help

推荐答案

如果您使用的是 CAAnimation 实例，看 animationDidStop：成品：对于其委托

If you are using a CAAnimation instance, look at the animationDidStop:finished: for its delegate.

CAAnimation * animation = [CAAnimation animation];
animation.delegate = yourDelegate; // could be self, for example.
[yourLayer setAnimation:animation forKey:nil];

在上面的例子中， yourDelegate 应实施 animationDidStop：完成：方法能够检测动画结束。

In the example above, yourDelegate should implement the animationDidStop:finished: method to be able to detect the animation end.

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