我用下面代码来调用一个方法，当动画停止的时候

1. [UIView beginAnimations:@"swipe" context:NULL];
   
2. [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
   
3. [UIView setAnimationDelegate:self];
   
4. [UIView setAnimationDidStopSelector:@selector(transitionDidStop:finished:context:)];
   
5. [UIView setAnimationDuration:0.3f];
   
6. 
   
7. //My Animation
   
8. 
   
9. [UIView commitAnimations];

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然后这是 transitionDidStop 方法的签名

1. - (void)transitionDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context

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但是我发现这个方法从来不被调用甚至在转换结束后，为什么？

你需要方法

1. - (void)transitionDidStop:(NSString *)animationID finished:(BOOL)finished context:(void *)context

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但是你只有

1. - (void)transitionDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context

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