如果 Webview 无法加载 URL，请切换视图？

Question

我的屏幕上有两个视图，第一个是 Webview，第二个是静态视图“errorView”，错误消息“设置为隐藏”。如果我们在将网站加载到 Webview 时出错，我正在尝试加载 errorView。

@objc private func loadURL() {
 
        guard let url = URL(string: "https://www.hackingwi") else {
            self.errroLoadingWebView.isHidden = false
            return
        }
        webView?.load(URLRequest(url: url))
        webView?.allowsBackForwardNavigationGestures = true
    }

Answer 1

您可以使用 WKNavigationDelegate.

设置委托

webView.uiDelegate = self
webView.navigationDelegate = self

class StaticWebPageVC: WKNavigationDelegate, WKUIDelegate {
    func webView(_: WKWebView, didFinish _: WKNavigation!) {
        // Web view loaded
    }
    
    func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
        // Show error view
    }
    
    func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
        // Show error view
    }
}