Swift-WKWebView

WKWebView 的navigationDelegate方法含义

    // 页面开始加载时调用
    func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
        
    }
    // 当内容开始返回时调用
    func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
        
    }
    // 页面加载完成之后调用
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        
    }
    // 页面加载失败时调用
    func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
        
    }
    // 接收到服务器跳转请求之后调用
    func webView(_ webView: WKWebView, didReceiveServerRedirectForProvisionalNavigation navigation: WKNavigation!) {
        
    }
    // 在收到响应后，决定是否跳转 -> 默认允许
    func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse, decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void) {
        //允许跳转
        decisionHandler(.allow)
        //不允许跳转
//        decisionHandler(.cancel)
    }
    // 在发送请求之前，决定是否跳转 -> 默认允许
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, preferences: WKWebpagePreferences, decisionHandler: @escaping (WKNavigationActionPolicy, WKWebpagePreferences) -> Void) {
        decisionHandler(.allow, preferences)
    }