/ zh-cn PBlog2 v2.4 /images/logos.gif / Hanyks's Blog /default.asp?id=373 hanyks@163.com(hanyks) Wed,18 Jan 2012 15:13:01 +0800 /default.asp?id=373
UIWebView类没有修改缩放系数的方法，我们只能用HTML代码来做。Meta标签可以设置viewport，而viewport就包含了初始化缩放系数的参数。

META标签如下所示：

<meta name="viewport"content="minimum-scale=0.6; maximum-scale=5;  initial-scale=1; user-scalable=yes; width=640">

可以使用的参数有：

    minimum-scale:
    允许缩放的最小倍数。默认为0.25，允许值为0－10。
    maximum-scale:
    运行缩放的最大倍数。默认1.6，允许值为0－10。
    initial-scale:
    当web页被加载，还未被用户缩放之前默认的缩放系数。默认值是自动根据页面大小和可用区域计算出来的，但这个值最终会在最小倍数到最大倍数之间。
    user-scalable
    是否运行用户缩放该web页。
    width:
    viewpoint的宽。默认为980像素（iPhone）。允许值为200－10000 。”device-width”表示设备宽度（iPhone为320，iPad为768）。注意device width不等于用户界面的宽度。设备宽度总是设备处于人像模式下的宽度（屏幕方向为正向）。如果我们想增加web页的最大缩放系数（默认1.6），我们只需要在HTML代码中增加META标签，指定maximum-scale属性即可。你可以直接在HTML源代码中加入META标签。如果web页来自internet并且无法修改HTML源代码，你可以用Javascript代码创建META标签并附加到web页的HTML代码中。读完剩下的内容，你就知道怎么做了。
    height:
    viewport的高。通常是根据width计算的。

JavaScript代码如下：

IncreaseZoomFactor.js:

function increaseMaxZoomFactor() {

   var element = document.createElement('meta');

   element.name = "viewport";

   element.content = "maximum-scale=10";

   var head = document.getElementsByTagName('head')[0];

   head.appendChild(element);

}

在webViewDidFinishLoad:委托方法中，你可以把这段JS代码加到web页中：

-(void)webViewDidFinishLoad:(UIWebView *)webView {

   NSString *path = [[NSBundle mainBundle]pathForResource:@"IncreaseZoomFactor" ofType:@"js"];

   NSString *jsCode = [NSStringstringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];

   [webViewstringByEvaluatingJavaScriptFromString:jsCode];

    [webView stringByEvaluatingJavaScriptFromString:@"increaseMaxZoomFactor()"];

}



当从web加载web页时，你需要小心，因为许多web页已经使用META标签去改变了缩放系数或其他的viewport参数。如果你加入了新的META标签，你会覆盖这些缩放系数以及其他未参数。也就是说，如果在多个META标签中定义同一参数，那么最后一个定义生效。大部分时候这不会产生什么问题，但某些时候例外。

例如，如果web页定义了初始缩放系数4，由于web页没有定义maximum-scale参数，那么默认值1.6将限制初始缩放系数只能是1.6。现在，你加大了maximum-scale,initialzoom也会加大，因为原来的maximum-scale参数不能再限制它了。这会带来一个严重的后果，你需要检查其他参数并根据它们的值进行重新定义（例如，你需要将initial-scale定义为1.6以防止maximum-scale将页面缩放得过多）。]]> /default.asp?id=372 hanyks@163.com(hanyks) Tue,10 Jan 2012 16:45:33 +0800 /default.asp?id=372 /default.asp?id=371 hanyks@163.com(hanyks) Fri,06 Jan 2012 13:19:19 +0800 /default.asp?id=371 /default.asp?id=370 hanyks@163.com(hanyks) Fri,06 Jan 2012 10:26:20 +0800 /default.asp?id=370 table
  {
border-collapse:collapse;
  }

table, td, th
  {
  border:1px solid black;
  }

浏览器支持

所有主流浏览器都支持 border-collapse 属性。

注释：任何的版本的 Internet Explorer （包括 IE8）都不支持属性值 "inherit"。

注释：如果没有规定 !DOCTYPE，则 border-collapse 可能产生意想不到的结果。

]]> /default.asp?id=369 hanyks@163.com(hanyks) Mon,28 Nov 2011 14:02:57 +0800 /default.asp?id=369 http://pttrns.com/
http://dribbble.com/
http://webdesignerwall.com/trends/iphone-app-site-design-trends]]> /default.asp?id=365 hanyks@163.com(hanyks) Wed,05 Oct 2011 18:46:41 +0800 /default.asp?id=365 http://www.annastar.net
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]]> /default.asp?id=362 hanyks@163.com(hanyks) Thu,25 Aug 2011 07:23:49 +0800 /default.asp?id=362
CUPERTINO, Calif.–August 24, 2011–To the Apple Board of Directors and the Apple Community:

I have always said if there ever came a day when I could no longer meet my duties and expectations as Apple’s CEO, I would be the first to let you know.

Unfortunately, that day has come.

I hereby resign as CEO of Apple. I would like to serve, if the Board sees fit, as Chairman of the Board, director and Apple employee.

As far as my successor goes, I strongly recommend that we execute our succession plan and name Tim Cook as CEO of Apple.

I believe Apple’s brightest and most innovative days are ahead of it. And I look forward to watching and contributing to its success in a new role.

I have made some of the best friends of my life at Apple, and I thank you all for the many years of being able to work alongside you.

Steve]]>