Question

我的应用程序包含“ Webview显示付款表格”，当我们填写完数据后，我们可以按“完成”按钮，然后Webview将重定向到其他网址。我已经搜索了此函数，并且发现了shouldStartLoadWith函数来解决此问题，但是当我实现此功能时，它不起作用

这是我的代码：

func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool {

        if request.url?.absoluteString == "https://xyzbank.com" {

            print("SUCCESS")
            return false
        }
        print("NOT SUCCESS")
        return true
    }

这两个都不打印。

这是我其余的代码：我认为我已经调用了webview的委托方法，但仍然无法正常工作

override func viewDidLoad() {
        super.viewDidLoad()

        hud.textLabel.text = "Processing..."
        hud.show(in: self.view)
        let mpayment: Payment = params.payment

        mywebview.navigationDelegate = self
        //Showing webview url....


    }

    func webView(webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: NSError) {
        print(error.localizedDescription)
    }
    func webView(webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
        print("Start to load")
    }
    func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {
        print("DID FINISH NAVIGATION")
    }
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        self.hud.textLabel.text = "Success"
        self.hud.detailTextLabel.text = nil
        self.hud.dismiss(animated: true)
    }

    func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool {

        if request.url?.absoluteString == "https://payway.ababank.com" {

            print("SUCCESS")
            return false
        }
        print("NOT SUCCESS")
        return true
    }

Answer 1

实际上，正如我所见，您的Web视图正在使用较新版本的WKWebview，但应该对UiWebview使用shouldStartLoadWith函数，对于WkWebview，我们应与DecisionHandler函数一起使用。代码应如下所示：

 func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping ((WKNavigationActionPolicy) -> Void)) {

    print("webView:\(webView) decidePolicyForNavigationAction:\(navigationAction) decisionHandler:\(decisionHandler)")

    if let url = navigationAction.request.url {
            print(url.absoluteString)
            if url.absoluteString.hasPrefix("https://payway-dev.ababank.com"){
                print("SUCCESS")
         }
    }

    decisionHandler(.allow)
}

当检测URL时，Swift ShouldStartLoadWith不起作用

1 个答案: