贝宝结账窗口在WKWebView中立即关闭(IOS)

// 实现WKNavigationDelegate
class ViewController: UIViewController, WKNavigationDelegate {
    var webView: WKWebView!

    override func viewDidLoad() {
        super.viewDidLoad()

        // 初始化WKWebView
        let webConfiguration = WKWebViewConfiguration()
        webView = WKWebView(frame: view.bounds, configuration: webConfiguration)
        webView.navigationDelegate = self
        view.addSubview(webView)
        
        // 加载贝宝结账窗口
        if let url = URL(string: "https://www.paypal.com/checkout") {
            let request = URLRequest(url: url)
            webView.load(request)
        }
    }
    
    // 贝宝结账窗口加载完成
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        // 调用贝宝提供的JavaScript方法关闭窗口
        let closeScript = "paypal.closeWindow();" // 请根据贝宝提供的实际关闭方法修改
        webView.evaluateJavaScript(closeScript, completionHandler: nil)
    }
    
    // 贝宝结账窗口加载失败
    func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
        // 处理加载失败的情况
    }
}