WKWebView Phone Call

웹 뷰 내 전화번호가 연결되어 있는 곳을 눌렀을 때의 화면

 ...
 //  HTML 
 <a href="tel:1544-7788">전화</a>
 ...

...
// Swift
extension ViewController: WKNavigationDelegate {
    
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
        if let url = navigationAction.request.url {
            if url.scheme == "tel" {
                if UIApplication.shared.canOpenURL(url) {
                    UIApplication.shared.open(url, options: [:], completionHandler: nil)
                }
                decisionHandler(.cancel)
                return
            }
        }
        
        decisionHandler(.allow)
        return
    }

}

...