2 UIImages之间的转换

Question

我使用下面的代码在两个UIImageView之间转换。

-(void)performTransitionNew: (NSInteger)type subType:(NSInteger)subType 
       fromImageView:(UIImageView *)fromImageView 
        toImageView:(UIImageView *)toImageView duration:(NSInteger)duration; 
{ 
    CATransition *transition = [CATransition animation]; 
    transition.duration = duration;//0.3; 
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; 

    NSString *types[4] = {kCATransitionMoveIn, kCATransitionPush, kCATransitionReveal, kCATransitionFade}; 
    NSString *subtypes[4] = { kCATransitionFromLeft, kCATransitionFromRight, kCATransitionFromTop, kCATransitionFromBottom}; 

    transition.type = types[type]; 

    transition.subtype = subtypes[subType]; 


    transitioning = YES; 
    transition.delegate = self; 

    [self.aUIView.layer addAnimation:transition forKey:nil]; 

    fromImageView.hidden = YES; 
    toImageView.hidden = NO; 

    UIImageView *tmp = toImageView; 
    toImageView = fromImageView; 
    toImageView = tmp; 

} 

它们都在UIView'aUIView'上。 我想要的结果是这样的：

，但它显示是这样的：

它看起来像toImageView来自aUIView之外。

欢迎任何评论。

Answer 1

问题是，UIView是在另一个视图之上（是滑块）你可以改变这些视图的顺序。如果一个UIView在另一个之前，那么子视图也是，无论它们是否在父视图的范围内。