WKWebView how to find the request in the WKNavigationDelegate methods - ios

Question

I'm trying to migrate from a UIWebView to WKWebView. shouldStartLoadWithRequest delegate method I could find the request as below:
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
NSLog(#"request: %#", request);
if ([request.URL.host isEqualToString:#"jsbridge"])
{
NSString* requestType = [request.URL.pathComponents objectAtIndex:2];
NSString* key = [request.URL.pathComponents objectAtIndex:3];
NSLog(#"requestType: %# - key: %#", requestType, key);
if([requestType isEqualToString:#"audio"])
{
[self playAudio:key];
}
return YES;
}
I need help finding the same request in the WKNavigationDelegate methods. Do I use the didCommit or didFinishNavigation methods and if so how do I find the request that it came from? Could someone give me an example? Wish I could do this is Swift but I have to stick to Objective-C. Thanks in advance.

Answer 1

As I know the equivalent of webView:shouldStartLoadWithRequest:navigationType: in UIWebView is webView:decidePolicyForNavigationAction:decisionHandler: in WKWebView.
Inside webView:decidePolicyForNavigationAction:decisionHandler:, you can get the request from navigationAction.
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
NSURLRequest *request = navigationAction.request;
// Do whatever you want with the request
decisionHandler(WKNavigationActionPolicyAllow);
}

Answer 2

Equivalent for UIWebview to WKWebview is as follows:
didFailLoadWithError => didFailNavigation
webViewDidFinishLoad => didFinishNavigation
webViewDidStartLoad => didStartProvisionalNavigation
shouldStartLoadWithRequest => decidePolicyForNavigationAction
The shouldStartWithRequest delegate method in WKWebview (Swift version) is as follows:
func webView(webView: WKWebView, decidePolicyForNavigationAction navigationAction: WKNavigationAction, decisionHandler: ((WKNavigationActionPolicy) -> Void)) {
if (webView.url?.host ?? "") == "jsbridge" {
let requestType = webView.url?.pathComponents[2]
let key = webView.url?.pathComponents[3]
print("requestType: \(requestType ?? "") - key: \(key ?? "")")
if (requestType == "audio") {
playAudio(key)
}
}
}

Answer 3

I created the custom class
class PKWebKitView: WKWebView,WKUIDelegate,WKNavigationDelegate {
var webView :WKWebView!
func loadRequestUrl(myRequest : URLRequest) {
self.navigationDelegate = self
self.uiDelegate = self
self.load(myRequest)
} }
extension PKWebKitView: WKNavigationDelegate {
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: #escaping (WKNavigationActionPolicy) -> Void) {
if let host = navigationAction.request.url?.absoluteString.removingPercentEncoding {
if host.contains(<endpoint check>) {
if let delegateWrapper = wkWebviewDelegate {
decisionHandler(.cancel)
}
}
if host.contains(<endpoint check>) {
let responseString = host
let query = "<Your query>"
wkWebviewDelegate?.launchScreen(query)
}
}
To Use:
let webConfiguration = WKWebViewConfiguration()
webView = PKWebKitView(frame: webViewContainer.frame, configuration: webConfiguration)
webView.loadRequestUrl(myRequest