iOS內嵌WKWebView撥打電話沒反應

 <a href="tel:13112345678">撥打號碼</a> 

內嵌H5的傳送簡訊，打電話，傳送郵件程式碼的處理
實現webview的代理方法

swift3.0 程式碼：

    // 處理撥打電話、發簡訊、發郵件以及Url跳轉等等 
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Swift.Void
 
) {
        if navigationAction.request.url?.scheme == "tel" {
//            DispatchQueue.main.async {
                UIApplication.shared.openURL(navigationAction.request.url!);
                decisionHandler(WKNavigationActionPolicy.cancel)
//            }
        }
        else if navigationAction.request
 
.url?.scheme == "sms"{
            //簡訊的處理
            UIApplication.shared.openURL(navigationAction.request.url!);
            decisionHandler(WKNavigationActionPolicy.cancel)
        }
        else if navigationAction.request.url?.scheme == "mailto"{
            //郵件的處理
            UIApplication.shared
 
.openURL(navigationAction.request.url!);
            decisionHandler(WKNavigationActionPolicy.cancel)
        }
        else{
            decisionHandler(WKNavigationActionPolicy.allow)
        }
    }

OC程式碼：

// 處理撥打電話以及Url跳轉等等
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    NSURL *URL = navigationAction.request.URL;
    NSString *scheme = [URL scheme];
    if ([scheme isEqualToString:@"tel"]) {
        NSString *resourceSpecifier = [URL resourceSpecifier];
        NSString *callPhone = [NSString stringWithFormat:@"telprompt://%@", resourceSpecifier];
/// 防止iOS 10及其之後，撥打電話系統彈出框延遲出現
        dispatch_async(dispatch_get_global_queue(0, 0), ^{
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:callPhone]];
        });
    }
    else {
    decisionHandler(WKNavigationActionPolicyAllow);
    }
}

傳送簡訊、郵件和打電話方式一樣