等待动画iOS中完成？ [英] Wait for Animation to finish in iOS?

问题描述

我希望动画完成后执行doSomethingElse。另一个限制是，动画code可以是不同的持续时间。我该怎么办呢？谢谢！

   - （无效）{doAnimationThenSomethingElse
  [个体经营doAnimation]
  [个体经营doSomethingElse]
}
 

这例如不工作：

  animationDuration = 1;
[UIView的animateWithDuration：animationDuration
    动画：^ {
      [个体经营doAnimation]
    }完成：^（BOOL完）{
      [个体经营doSomethingElse]
    }
];
 

解决方案

当你是不是动画的作者，你可以当动画通过使用交易完成后段结束得到一个回调：

  [CATransaction setCompletionBlock：^ {
     // doSomethingElse
}];
// 做一点事
 

I want to execute doSomethingElse after the animation is finished. Another constraint is that the animation code can be of different duration. How can I do that? thanks!

-(void) doAnimationThenSomethingElse {
  [self doAnimation];
  [self doSomethingElse];
}

This for example doesn't work:

animationDuration = 1;
[UIView animateWithDuration:animationDuration
    animations:^{
      [self doAnimation];
    } completion:^(BOOL finished) {
      [self doSomethingElse];
    }
];

解决方案

When you are not the author of the animation, you can get a callback when the animation ends by using a transaction completion block:

[CATransaction setCompletionBlock:^{
     // doSomethingElse
}];
// doSomething

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