animationDidStop用于组动画 [英] animationDidStop for group animation

问题描述

我有一个群组动画，但我无法检测到何时点击animationDidStop。我的代码示例：

I have a group animation but I can not detect when hits animationDidStop. example of my code:

[group setDelegate:self];
[view.layer addAnimation:group forKey:@"groupAnimation"];

你们中的任何人都知道我怎么知道群体动画何时完成？

any of you knows how I know when the group animation is done?

推荐答案

您还需要设置animationName属性以匹配，并确保正确定义了委托函数：

You need to also set the animationName property to match, and ensure that your delegate function is properly defined:

CAAnimationGroup *group = [CAAnimationGroup animation];
group.duration = 2.0f;
group.delegate = self;
[group setValue:@"groupAnimation" forKey:@"animationName"];
[group setAnimations:[NSArray arrayWithObjects:myAnimation, myOtherAnimation, nil]];
[view.layer addAnimation:group forKey:@"groupAnimation"];

。
。
。

. . .

- (void)animationDidStop:(CAAnimation *)animation finished:(BOOL)finished
{
 if (finished)
 {
  NSString *animationName = [animation valueForKey:@"animationName"];
  if ([animationName isEqualToString:@"groupAnimation"])
  {
   // your groupAnimation has ended
  }
 }
}

请注意，对于群组动画，您的组件动画上设置的代表将被忽略。

Please note that with group animations, the delegates set on your component animations will be ignored.

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