2 UIImages之間的轉換

Question

我使用下面的代碼在兩個UIImageView之間轉換。

-(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; 

} 

它們都在UIView'aUIView'上。 我想要的結果是這樣的：

，但它顯示是這樣的：

它看起來像toImageView來自aUIView之外。

歡迎任何評論。

Answer 1

問題是，UIView是在另一個視圖之上（是滑塊）你可以改變這些視圖的順序。如果一個UIView在另一個之前，那麼子視圖也是，無論它們是否在父視圖的範圍內。