使webview自适应页面

///#pragma mark--webview的代理方法

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

// [self.webView stringByEvaluatingJavaScriptFromString:
// [NSString stringWithFormat: @"var script = document.createElement('script');"
// "script.type = 'text/javascript';"
// "script.text = "function ResizeImages() { "
// "var myimg,oldwidth;"
// "var maxwidth = %f;"
// "for(i=0;i <document.images.length;i++){"
// "myimg = document.images[i];"
// "if(myimg.width > maxwidth){"
// "oldwidth = myimg.width;"
// "myimg.width = maxwidth;"
// "}"
// "}"
// "}";"
// "document.getElementsByTagName('head')[0].appendChild(script);",kWidth-20]
// ];
// [self.webView stringByEvaluatingJavaScriptFromString:@"ResizeImages();"];

[self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:
                                                 @"var script = document.createElement('script');"
                                                 "script.type = 'text/javascript';"
                                                 "script.text = \"function ResizeImages() { "
                                                 "var myimg,oldwidth;"
                                                 "var maxwidth = %g;" // UIWebView中显示的宽度
                                                 "for(i=0;i <document.images.length;i++){"
                                                 "myimg = document.images[i];"
                                                 "if(myimg.width > maxwidth){"
                                                 "oldwidth = myimg.width;"
                                                 "myimg.width = maxwidth;"
                                                 "}"
                                                 "}"
                                                 "}\";"
                                                 "document.getElementsByTagName('head')[0].appendChild(script);",self.view.frame.size.width]];
[self.webView stringByEvaluatingJavaScriptFromString:@"ResizeImages();"];

}
///