两个UIImages之间的过渡

Question

我使用下面的代码在两个UIImageViews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;

}

他们都在UIView'aUIView'上。 我希望结果是这样的：

但它显示如下：

看起来toImageView来自aUIView之外。

欢迎任何评论。

Answer 1

问题是，UIView位于另一个View的顶部（滑块是）您可以更改这些视图的顺序。如果UIView在另一个之前，则子视图也是，无论它们是否在父视图的边界内。