UITableViewCell With UIWebView Dynamic Height

Question

I have a table view with cells that have a webView in them, I want the height of the cell to match the height of the webView.

This is the code I use:

Answer 1

The most easy and elegant way is

1. Add height layout constraint for webview

2. Add webview Delegate finished loading then set contentSize height to constant of height layout constraint.

3. Keep instance of tableview or make a delegate - block - closure to main tableview.

4. Call tableview beginupdate endupdate to let tableview know they should validate layout.

class WebViewTableViewCell: UITableViewCell {
    weak var viewController: ViewController? = nil
    @IBOutlet weak var webView: UIWebView!
    @IBOutlet weak var heightLayoutConstraint: NSLayoutConstraint!
    
    override func awakeFromNib() {
        super.awakeFromNib()
        webView.loadRequest(URLRequest(url: URL(string: "https://tinhte.vn")!))
        webView.delegate = self
        webView.scrollView.isScrollEnabled = false
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }

}
extension WebViewTableViewCell: UIWebViewDelegate {
    func webViewDidFinishLoad(_ webView: UIWebView) {
        heightLayoutConstraint.constant = webView.scrollView.contentSize.height
        viewController?.tableView.beginUpdates()
        viewController?.tableView.endUpdates()
    }
}