iOS 4.2 上的这个动画有什么问题吗？

发布于 2024-10-02 05:45:10 字数 999 浏览 0 评论 0原文

我在我的项目上创建了在 2 个 UIWebView 之间交换的动画。当我在 iOS 3.2 上进行开发时，动画一切都很好。但当我转向 iOS 4.2 时，突然一切都出了问题：

    //LeftView Animation

    [UIView beginAnimations:@"leftPortrait" context:nil];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDuration:1.0f];
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:leftView cache:YES];
    [leftWebView setFrame:CGRectMake(0, 0, 384, 916)];
    [UIView commitAnimations];

    //RightView Animation
    [UIView beginAnimations:@"rightPortrait" context:nil];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDuration:1.0f]; 
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:rightView cache:YES];
    [rightWebView setFrame:CGRectMake(0, 0, 384, 916)];
    [UIView commitAnimations];

谢谢！

原文

I created animation on my project that swaps between 2 UIWebView.
When I was developing on iOS 3.2 everything was fine with the animation.
But when I moved to iOS 4.2 suddenly everything goes wrong:

    //LeftView Animation

    [UIView beginAnimations:@"leftPortrait" context:nil];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDuration:1.0f];
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:leftView cache:YES];
    [leftWebView setFrame:CGRectMake(0, 0, 384, 916)];
    [UIView commitAnimations];

    //RightView Animation
    [UIView beginAnimations:@"rightPortrait" context:nil];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDuration:1.0f]; 
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:rightView cache:YES];
    [rightWebView setFrame:CGRectMake(0, 0, 384, 916)];
    [UIView commitAnimations];

Thanks!

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长途伴 2024-10-09 05:45:10

尝试使用基于块的动画。

它们更干净、更流畅，也是当前苹果的做事方式。从 [UIView beginAnimations:context:] 切换到基于块的动画最近还修复了我的代码中的动画问题。

在您的情况下，一个简单的基于块的动画版本将是 [UIView animateWithDuration:1.0fanimations:^{[leftWebView setFrame:CGRectMake(0, 0, 384, 916)];}。
您可能需要使用 -[UIView animateWithDuration:delay:options:animations:animations:completion:] 来设置其他选项以及动画完成时应执行的代码。