UIWebView获得内容的高 高度自适应 宽度自适应
作者:互联网
UIWebView获得内容的高-作出自适应高的UIWebView
- (void)webViewDidFinishLoad:(UIWebView *)webView { NSString *height_str= [webView stringByEvaluatingJavaScriptFromString: @"document.body.offsetHeight"]; int height = [height_str intValue]; webView.frame = CGRectMake(0,0,320,height); NSLog(@"height: %@", [webView stringByEvaluatingJavaScriptFromString: @"document.body.offsetHeight"]); }
IOS UIWebView截获html并修改便签内容,宽度自适应 iosuiwebview宽度自适应 需求:混合应用UIWebView打开html后,UIWebView有左右滚动条,要去掉左右滚动效果; 方法:通过js截获UIWebView中的html,然后修改html标签内容; 实例代码: 服务器端html Java代码 收藏代码 <html><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"> <title>网曝四川省一考场时钟慢半小时 老师称这就是命</title></head<body>网曝四川省一考场时钟慢半小时 老师称这就是命</body></html> 这样显示的结果网页的最小宽度会是device-width;但有时候不需要这个宽度,就需要修改width=device-width为width=myWidth; 客户端代码 Java代码 收藏代码 - (void)webViewDidFinishLoad:(UIWebView *)webView { //修改服务器页面的meta的值 NSString *meta = [NSString stringWithFormat:@"document.getElementsByName(\"viewport\")[0].content = \"width=%f, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no\"", webView.frame.size.width]; [webView stringByEvaluatingJavaScriptFromString:meta]; } 这样问题就可以解决了 新增代码: Java代码 收藏代码 //给网页增加utf-8编码 [webView stringByEvaluatingJavaScriptFromString: @"var tagHead =document.documentElement.firstChild;" "var tagMeta = document.createElement(\"meta\");" "tagMeta.setAttribute(\"http-equiv\", \"Content-Type\");" "tagMeta.setAttribute(\"content\", \"text/html; charset=utf-8\");" "var tagHeadAdd = tagHead.appendChild(tagMeta);"]; Java代码 收藏代码 //给网页增加css样式 [webView stringByEvaluatingJavaScriptFromString: @"var tagHead =document.documentElement.firstChild;" "var tagStyle = document.createElement(\"style\");" "tagStyle.setAttribute(\"type\", \"text/css\");" "tagStyle.appendChild(document.createTextNode(\"BODY{padding: 20pt 15pt}\"));" "var tagHeadAdd = tagHead.appendChild(tagStyle);"]; Java代码 收藏代码 //拦截网页图片 并修改图片大小 [webView stringByEvaluatingJavaScriptFromString: @"var script = document.createElement('script');" "script.type = 'text/javascript';" "script.text = \"function ResizeImages() { " "var myimg,oldwidth;" "var maxwidth=380;" //缩放系数 "for(i=0;i <document.images.length;i++){" "myimg = document.images[i];" "if(myimg.width > maxwidth){" "oldwidth = myimg.width;" "myimg.width = maxwidth;" "myimg.height = myimg.height * (maxwidth/oldwidth);" "}" "}" "}\";" "document.getElementsByTagName('head')[0].appendChild(script);"]; [webView stringByEvaluatingJavaScriptFromString:@"ResizeImages();"];
转载于:https://www.cnblogs.com/someonelikeyou/p/3578500.html
标签:代码,适应,width,宽度,UIWebView,var,webView,document 来源: https://blog.csdn.net/weixin_33755847/article/details/94538772