How do you detect when a link was clicked in a WKWebView? I'm looking for the equivalent of this in a UIWebView.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
if(navigationType == UIWebViewNavigationTypeLinkClicked)
{
}
return YES;
}
I tried this in the WKNavigationDelegate
but I only ever get WKNavigationTypeOther
for all requests even when clicking on links.
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
if(navigationAction.navigationType == WKNavigationTypeLinkActivated)
{
}
decisionHandler(WKNavigationActionPolicyAllow);
}
Unlike UIWebView, which does not support server authentication challenges, WKWebView does. In practical terms, this means that when using WKWebView, you can enter site credentials for password-protected websites.
Debugging with WKWebViewOpen Safari and press ⌘+, to open Preference, under the Advanced tab, check “Show Develop menu in menu bar”. Not until we have the project build can we use the Safari debugger. The debugger is under Develop → Your simulator or device.
WKWebView. WKWebView was introduced in iOS 8 allowing app developers to implement a web browsing interface similar to that of mobile Safari. This is due, in part, to the fact that WKWebView uses the Nitro Javascript engine, the same engine used by mobile Safari.
To check if your WKWebView has loaded easily implement the following method: import WebKit import UIKit class ViewController: UIViewController, WKNavigationDelegate { let webView = WKWebView() func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!)
What you can do in a WkWebView
is the following:
override func viewDidLoad() {
super.viewDidLoad()
let webView = WKWebView()
self.view.addSubview(webView) // you need to also setup constraints here - I left out for clarity
// Make sure you set the delegate, so you get the callback
self.webView.navigationDelegate = self
}
// WKWebViewNavigationDelegate
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
guard let url = navigationAction.request.url, let scheme = url.scheme, scheme.contains("http") else {
// This is not HTTP link - can be a local file or a mailto
decisionHandler(.cancel)
return
}
// This is a HTTP link
open(url: url)
decisionHandler(.allow)
}
In this delegate method, you get the URL request that the WKWebView
is trying to open. There you can check the attributes of the URLRequest
and respond accordingly.
You can even write an extension for URLRequest
that handles that logic, so you can reuse it.
extension URLRequest {
var isHttpLink: Bool {
return self.url?.scheme?.contains("http") ?? false
}
}
Then you can change the long condition in the delegate method to:
// WKWebViewNavigationDelegate
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
guard navigationAction.request.isHttpLink else {
decisionHandler(.allow)
return
}
// ... handle url
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