1. 程式人生 > >iOS webView 載入HTML5獲取載入後的高度

iOS webView 載入HTML5獲取載入後的高度

第一種


//html5 圖片設定為螢幕寬
        NSString *myStr = [NSString stringWithFormat:@"<head><style>img{max-width:%f !important;}</style></head>",screenWidth];
        NSString *str = [NSString stringWithFormat:@"%@%@",myStr,html5文字];

//////////////////////////////////////////////
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    //HTML5的高度
NSString *htmlHeight = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight"]; //HTML5的寬度 NSString *htmlWidth = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollWidth"]; //寬高比 float i = [htmlWidth floatValue]/[htmlHeight floatValue]; //webview控制元件的最終高度
float height = screenWidth/i; //後面的程式碼 。。。。。。 }

第二種

        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; // //後面的程式碼 。。。。。。 }