WKWebView 如何在 WKNavigationDelegate 方法中查找请求

Question

>我正在尝试从UIWebView迁移到WKWebView。 应该开始加载与请求委托方法 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 方法中查找相同的请求。我是否使用 didCommit 或 didFinishNavigation 方法，如果是，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，但我必须坚持使用 Objective-C。提前谢谢。

Answer 1

据我所知，UIWebView中webView:shouldStartLoadWithRequest:navigationType:的等价物在WKWebView中webView:decidePolicyForNavigationAction:decisionHandler:。

在webView:decidePolicyForNavigationAction:decisionHandler:中，你可以从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

我创建了自定义类

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)
}
}

使用方法：

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

Answer 3

UIWebview 到 WKWebview 的等效项如下：

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

WKWebview(Swift 版本(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)
}
}
}