我的CAAnimation有什么问题吗？

Question

代码：

UIView *superView = [self.view superview];
CATransition *animation = [CATransition animation];
animation.duration = 0.5f;
animation.timingFunction = UIViewAnimationCurveEaseInOut;
animation.fillMode = kCAFillModeForwards;
animation.type = kCATransitionFade;
animation.subtype = kCATransitionFromTop;
[root.view removeFromSuperview];
[self.view removeFromSuperview];
[superView.layer addAnimation:animation forKey:@"removeContentAnimation"];

self.view和root.view被添加到“superView”

中

当我提交此动画时，发生错误的可能性很小 - 两个视图都从superView中删除并立即返回。在这快速变化之后，它正常消失。

Answer 1

看看这个doku：http://developer.apple.com/library/ios/#documentation/WindowsViews/Conceptual/ViewPG_iPhoneOS/AnimatingViews/AnimatingViews.html#//apple_ref/doc/uid/TP40009503-CH6-SW1

1. 您无法为removeFromSuperView设置动画。
2. 您应该使用块来为视图设置动画

这是一个简短的提示：

- (IBAction)hideView:(id)sender
{
    [UIView animateWithDuration:1.0
        delay: 0.0
        options: UIViewAnimationOptionCurveEaseIn
        animations:^{
             viewToHide.alpha = 0.0;
        }
        completion:^(BOOL finished){
            [viewToHide removeFromSuperView];
        }];
}