WKWebView 如何在 WKNavigationDelegate 方法中找到请求

Question

我正在尝试从 UIWebView 迁移到 WKWebView。 shouldStartLoadWithRequest 委托方法我可以找到如下请求：

- (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;
}

我需要帮助在 WKNavigationDelegate 方法中找到相同的请求。我是否使用 didCommit 或 didFinishNavigation 方法，如果是，我如何找到它来自的请求？有人可以给我举个例子吗？希望我能做到这一点是 Swift 但我必须坚持 Objective-C。提前致谢。

Answer 1

据我所知，UIWebView 中的 webView:shouldStartLoadWithRequest:navigationType: 相当于 WKWebView 中的 webView:decidePolicyForNavigationAction:decisionHandler:。

在 webView:decidePolicyForNavigationAction:decisionHandler: 中，您可以从 navigationAction 获取请求。

- (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

UIWebview 等价于 WKWebview 如下：

didFailLoadWithError => didFailNavigation
webViewDidFinishLoad => didFinishNavigation
webViewDidStartLoad => didStartProvisionalNavigation
shouldStartLoadWithRequest => decidePolicyForNavigationAction

WKWebview(Swift版)中的shouldStartWithRequest委托方法如下：

    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

我创建了自定义 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)
            }
}

使用：

let webConfiguration = WKWebViewConfiguration()
webView = PKWebKitView(frame: webViewContainer.frame, configuration: webConfiguration)
webView.loadRequestUrl(myRequest

WKWebView 如何在 WKNavigationDelegate 方法中找到请求

WKWebView how to find the request in the WKNavigationDelegate methods

objective-c

ios

wkwebview