WKNavigationDelegate methods not called

Question

I'm trying to write a controller with a webview and I need WKNavigationDelegate methods, the problem is that these methods are not being executed at all.

This is my controller:

import UIKit
import WebKit

public class WebViewController: UIViewController {

    private let webView: WKWebView = WKWebView()

    override public func viewDidLoad() {
        super.viewDidLoad()

        webView.navigationDelegate = self
        webView.isUserInteractionEnabled = true

        view = webView
    }
}

extension WebViewController: WKNavigationDelegate {
    private func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
        debugPrint("didCommit")
    }

    private func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        debugPrint("didFinish")
    }

    private func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
        debugPrint("didFail")
    }
}

This controller is being added to a top view controller using a container view, also the webview loads the website correctly. Has anyone had a similar problem or knows if I'm doing something wrong

Ok just a hint, try to remove private from each Delegate methods and try. — Shabir jan
– Shabir jan, Commented Apr 22, 2019 at 13:04

Shabir jan · Accepted Answer · 2019-04-22 13:57:31Z

9

It looks like you are adding private with WKWebViewDelegate Methods, Remove those like this and it will work.

extension ViewController: WKNavigationDelegate {
 func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
    debugPrint("didCommit")
}

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

 func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
    debugPrint("didFail")
}

} Try this out, Also don't forgot to load URL in WebView or whatever you want to load.

edited Apr 22, 2019 at 13:57

answered Apr 22, 2019 at 13:06

Shabir jan

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8 Comments

Claudio Over a year ago

That doesn't work and I'm loading the url correctly

Shabir jan Over a year ago

Well i created demo project and these Delegates methods are all being fired.

Claudio Over a year ago

The public visibility was necessary, stupid mistake. Thanks

Shabir jan Over a year ago

BTW explicit marking these delegates Public are not necessary.

Claudio Over a year ago

Are you sure Shabir? Have you tried that? I've tested without the public modifier and it doesn't work, XCode also presents the following message: "Instance method 'webView(_:didCommit:)' nearly matches optional requirement..."

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