iOS webView 加载HTML5获取加载后的高度

来源：互联网发布：js延迟加载方式编辑：程序博客网时间：2024/05/29 07:51

第一种

//html5 图片设置为屏幕宽        NSString *myStr = [NSString stringWithFormat:@"<head><style>img{max-width:%f !important;}</style></head>",screenWidth];        NSString *str = [NSString stringWithFormat:@"%@%@",myStr,html5文本];//////////////////////////////////////////////- (void)webViewDidFinishLoad:(UIWebView *)webView{    //HTML5的高度    NSString *htmlHeight = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight"];    //HTML5的宽度    NSString *htmlWidth = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollWidth"];   //宽高比    float i = [htmlWidth floatValue]/[htmlHeight floatValue];       //webview控件的最终高度    float height = screenWidth/i;    //后面的代码    。。。。。。    }

第二种

        NSString *htmls = [NSString stringWithFormat:@"<html> \n"                           "<head> \n"                           "<style type=\"text/css\"> \n"                           "body {margin:18;font-size:45;color:0x666666}\n"                           "</style> \n"                           "</head> \n"                           "<body>"                           "<script type='text/javascript'>"                           "window.onload = function(){\n"                           "var $img = document.getElementsByTagName('img');\n"                           "for(var p in  $img){\n"                           " $img[p].style.width = '100%%';\n"                           "$img[p].style.height ='auto'\n"                           "}\n"                           "}"                           "</script>%@"                           "</body>"                           "</html>",_model.content];        [_webView loadHTMLString:htmls baseURL:nil];- (void)webViewDidFinishLoad:(UIWebView *)webView{        NSString *htmlHeight = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight"];    NSString *htmlWidth = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollWidth"];        float i = [htmlWidth floatValue]/[htmlHeight floatValue];    float height = screenWidth/i;    //    //后面的代码    。。。。。。}

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