iPhone UIView 动画最佳实践 [英] iPhone UIView Animation Best Practice

问题描述

在 iPhone 上动画视图转换的最佳实践是什么?

What is considered best practice for animating view transitions on the iPhone?

例如，来自苹果的 ViewTransitions 示例项目使用如下代码:

For example, the ViewTransitions sample project from apple uses code like:

CATransition *applicationLoadViewIn = [CATransition animation];
[applicationLoadViewIn setDuration:1];
[applicationLoadViewIn setType:kCATransitionReveal];
[applicationLoadViewIn setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]];
[[myview layer] addAnimation:applicationLoadViewIn forKey:kCATransitionReveal];

但也有一些代码片段在网络上漂浮，看起来像这样:

but there are also code snippets floating around the net that look like this:

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.75];
[UIView setAnimationDelegate:self];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:myview cache:YES];
[myview removeFromSuperview];
[UIView commitAnimations];

最好的方法是什么?如果您也可以提供一个片段，将不胜感激.

What is the best approach? If you could provide a snippet as well it'd be much appreciated.

注意:我一直无法让第二种方法正常工作.

NOTE: I've been unable to get the second approach to work correctly.

推荐答案

来自 UIView 参考关于beginAnimations:context: 方法的部分:

From the UIView reference's section about the beginAnimations:context: method:

不鼓励在 iPhone OS 4.0 及更高版本中使用此方法.您应该改用基于块的动画方法.

Use of this method is discouraged in iPhone OS 4.0 and later. You should use the block-based animation methods instead.

例如基于 Tom's Comment 的基于块的动画

[UIView transitionWithView:mysuperview 
                  duration:0.75
                   options:UIViewAnimationTransitionFlipFromRight
                animations:^{ 
                    [myview removeFromSuperview]; 
                } 
                completion:nil];

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