如何从UIWebView页面获取对iOS应用程序的响应？

import UIKit

class ViewController: UIViewController, UIWebViewDelegate {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let webView = UIWebView(frame: view.bounds)
        webView.delegate = self
        view.addSubview(webView)
        
        let url = URL(string: "https://example.com")
        let request = URLRequest(url: url!)
        webView.loadRequest(request)
    }
    
    func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebView.NavigationType) -> Bool {
        if let url = request.url, url.scheme == "myapp" {
            // 处理自定义的URL Scheme
            // 执行相应的操作
            return false
        }
        return true
    }
}