'background-attachment：fixed'的解决方法在iOS4中不工作

问题描述：

我很难获取固定背景图片的网页，因此当在UIWebView中滚动页面时，图片不会移动。

我发现的是： background-attachment：fixed 在iOS4中不起作用（使用4.2.1）。
要仔细检查，我已经准备了一个页面，其中包含< head> 部分中的代码片段Mac，但没有这样做在iPhone的Safari ...

I'm struggling to get web page with a fixed background image, so the image does not move when page is scrolled in a UIWebView.
What I've discovered is: background-attachment: fixed does not work in iOS4 (using 4.2.1). To double-check I've prepared a page with code snippet (below) inside <head> section and the page works as expected under Safari and Firefox on Mac, but fails to do so in iPhone's Safari...

你建议什么作为解决方法，以实现预期的结果？我已经使我的UIWebView半透明，并添加了UIImageView，所以我可以看到固定的背景图像通过半透明的页面。不幸的是，当我滚动它的结束/开始边缘时，我可以看到UIWebView边框。

What do you suggest as a workaround for achieving the expected results? I've made my UIWebView translucent and added UIImageView, so I can see "fixed background image" through translucent page. Unfortunately, I can see UIWebView borders when I scroll over its end/beginning edges.

有任何官方苹果资源/网页，说明背景-attachment：fixed is not implemented for iOS4？

Is there any official Apple resource/web page stating that background-attachment: fixed is not implemented for iOS4?

干杯！

上述代码段：

<style type="text/css">  
body {  
    background: #ffffff url('image.jpg') fixed no-repeat;  
    background-attachment: fixed;  
}  
</style>

答

我不知道CSS是怎么回事并没有机会检查它自己，但我知道，当我试图摆脱UIWebView的阴影我使用这一点的代码：

I am not sure what is going on with the CSS and have not had a chance to check it out for myself but I know when I was trying to get rid of the shadows from a UIWebView I used this bit of code:

NSArray *sv = [NSArray arrayWithArray:[myWebView subviews]];
UIScrollView *webScroller = (UIScrollView *)[sv objectAtIndex:0];

NSArray *wsv = [NSArray arrayWithArray:[webScroller subviews]];

[[wsv objectAtIndex:6] setHidden:YES];
[[wsv objectAtIndex:7] setHidden:YES];
[[wsv objectAtIndex:8] setHidden:YES];
[[wsv objectAtIndex:9] setHidden:YES];

，它摆脱了阴影。我认为我得到的问题的答案，但当我找到它这是唯一的

and it got rid of the shadows. I thought I got the answer off of a SO question but when I looked for it this is the only one that came up.

它通过App Store检查。

It passed App Store inspection.

'background-attachment：fixed'的解决方法在iOS4中不工作

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