Tableview单元格WKWebview高度按内容迅速

Question

我在表格单元格中使用WKWebView，我需要弄清楚WKWebView内容的高度来管理表格视图的高度，但是我能够达到适当的高度。以下是我的努力

// calling delegate on cell like this 
  let cell = tableView.dequeueReusableCell(withIdentifier: "TourDetailsOverviewCell", for: indexPath) as! TourDetailsOverviewCell
  cell.tourOverviewDescriptionWebView.navigationDelegate = self
  cell.tourOverviewDescriptionWebView.scrollView.isScrollEnabled = false
  cell.tourOverviewDescriptionWebView.loadHTMLString(self.tourDetails?.tourDetail?.tourOverview?.description ?? "", baseURL: nil)       
  return cell


 func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {

    if (self.webViewHeight != 0.0) {
          //we already know height, no need to reload cell
        return
    }

    webView.frame.size.height = 0.0
    if webView.isLoading == false {
        webView.evaluateJavaScript("document.readyState", completionHandler: { (complete, error) in
            if complete != nil {
                let height = webView.scrollView.contentSize
                print("height of webView is: \(height)")
                webView.evaluateJavaScript("document.body.scrollHeight", completionHandler: { (height, error) in
                    //DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
                        self.webViewHeight = height as! CGFloat
                    print("height of webView is: \(self.webViewHeight)")
                    //self.webViewHeight = height as! CGFloat
                    //self.containerHeight.constant = height as! CGFloat
                })
            }
        })
            self.tableView.reloadRows(at: [IndexPath(row: 1, section: 0)], with: .automatic)
  }

任何参考文献也将不胜感激。对不起，我的英语不好