单击 webkit 上的操作标签时如何打开调用对话框？

Question

我在我的应用程序中使用了 webkit。

如图所示，“继续”和呼叫按钮（phone 图标）都是来自网站的操作标签。

当我点击“继续”时，它会让我进入下一页，但是当我点击呼叫按钮（phone 图标）时，没有任何反应。

我想在 ios 中单击呼叫按钮（phone 图标）时打开呼叫拨号器。

我所做的如下，我的代码是

import UIKit
import WebKit
import Alamofire

class ContinueViewController: UIViewController, WKUIDelegate {

    func getPostString(params:[String:Any]) -> String{
            var data = [String]()
            for(key, value) in params
            {
                data.append(key + "=\(value)")
            }
            return data.map { String([=10=]) }.joined(separator: "&")
    }



    @IBOutlet weak var activityView: UIActivityIndicatorView!
    @IBOutlet weak var webview: WKWebView!

    var url: URL?
    var id = 0, skill = 0
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        if #available(iOS 14.0, *) {
            webview.configuration.defaultWebpagePreferences.allowsContentJavaScript = true
        }else {
            let preferences = WKPreferences()
            preferences.javaScriptEnabled = true

            let configuration = WKWebViewConfiguration()
            configuration.websiteDataStore = WKWebsiteDataStore.nonPersistent()
            configuration.preferences = preferences
        }

        webview.navigationDelegate = self
        self.navigationController?.navigationBar.isHidden = true
        webview.uiDelegate = self




    }
    override func viewDidLoad() {
        super.viewDidLoad()
        
        activityView.startAnimating()

        guard let url = self.url else { return }
        var req = URLRequest(url: url)

        let params = ["id" : id,"skill" : skill]
        let postString = self.getPostString(params: params)
        req.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")

        req.httpMethod = "POST"
        req.httpBody = postString.data(using: .utf8)
        self.webview.load(req)
    }
}

extension ContinueViewController: WKNavigationDelegate {
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        activityView.stopAnimating()
    }


}

Answer 1

在您的 WKNavigationDelegate 实施中，您可以执行如下操作：

    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
      if let url = navigationAction.request.url, url.scheme == "tel" {
        UIApplication.shared.open(url)
        decisionHandler(.cancel)
      }else {
        decisionHandler(.allow)
      }
    }

单击 webkit 上的操作标签时如何打开调用对话框？

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