CAAnimation animationDidStop不调用NSAnimationContext

Question

我的动画滚动NSScrollView，用这段代码：

[NSAnimationContext beginGrouping]; 
    NSClipView* clipView = [self contentView]; 
    NSPoint newOrigin = [clipView bounds].origin; 
    newOrigin.x = page*kGalleryWidth; 
    [[clipView animator] setBoundsOrigin:newOrigin]; 
    [NSAnimationContext endGrouping]; 

现在，我试图让触发动画结束事件。 我读过一段代码，使用CAAnimation，我很容易实现它，但我不能。

我已经试过这下面的代码：

CAAnimation *moveAnimation = [[self.contentView animationForKey:@"frameOrigin"] copy]; 
moveAnimation.delegate = self; 
[self.contentView setAnimations:[NSDictionary dictionaryWithObject:moveAnimation forKey:@"frameOrigin"]]; 

• （无效）animationDidStop：（CAAnimation *）动画完成：（BOOL）标志{

  的NSLog（@ “住手！” ）;

}

是否有人能帮助我吗？

谢谢！

Answer 1

您可以使用此功能：

​​

Answer 2

[UIView beginAnimations:@"goback" context:nil]; 
[UIView setAnimationDuration:0.3f]; 
[UIView setAnimationBeginsFromCurrentState:NO]; 
dragOperation.draggable.center =dragOperation.initialPoint; 
[UIView setAnimationDelegate:self]; 
[UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)]; 
UIView commitAnimations]; 




-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context { 
    [self.layer removeAnimationForKey:@"goback"]; 
}