How to determine the content size of a UIWebView?

Question

I have a UIWebView with different (single page) content. I\'d like to find out the CGSize of the content to resize my parent views appropriately. T

Answer 1

Xcode8 swift3.1:

1. Set webView height to 0 first.
2. In webViewDidFinishLoad Delegate:

let height = webView.scrollView.contentSize.height

Without step1, if webview.height > actual contentHeight, step 2 will return webview.height but not contentsize.height.