无法获得uiwebview高度的正确值

Question

I am trying to get the value of uiwebview this way:

            var webview = self.articleContent

            println(webview.frame.size.height)
            // prints 300

            // rendering the webview
            webview.loadHTMLString(articleHtmlContent, baseURL: nil)

            // getting the height of the webview
            var output = webview.stringByEvaluatingJavaScriptFromString("document.body.scrollHeight;")!

            println(output)
            // prints 300 - again

So it looks like the output I get is the height of the uiwebview instead of the height of the HTML content.

How can I get the height of the HTML contents?

Answer 1

Use its scroll view's content size which will be available after the web view responds to webViewDidFinishLoad on its UIWebViewDelegate like this:

func webViewDidFinishLoad(webView: UIWebView!) {
  CGFloat totalHeight = webview.scrollView.contentSize.height
}