Hello,

In the code below I am creating an alert that's supposed to pop up everytime a user clicks a URL that isn't allowed. However, everytime I run my code the alert pops up in the initial view controller, and keeps on poping up even after I press return. How do I show this alert only when user clicks wrong URL?

I have been at this for hours, please......HELP ME!!!!!

func webView(_ webView: WKWebView, decidePolicyFor navigationAction:
                    WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {

        let url = navigationAction.request.url

        if let host = url?.host { //host means web domain like nba.com
            for website in websites {
                if host.contains(website) {
                    decisionHandler(.allow)
                    return
                }
            }
        configAlert()
        }

        decisionHandler(.cancel)

    }

    func configAlert() {
        let vc = UIAlertController(title: "ERROR 404", message: "Sorry this page is blocked", preferredStyle: .alert)
        vc.addAction(UIAlertAction(title: "Return", style: .cancel))
        present(vc, animated: true, completion: nil)

//        if webView.isLoading == false {
//            present(vc, animated: true)
//            return
//        }
    }

Hi,

there is a small mistake, your code to display alert is inside the if let, which means that it will execute each time you try to load new website.

Good attempt. just update the code according to @nemecek-filip.