iOS内嵌WKWebView拨打电话、发短信、发邮件没反应

<a href="tel:13112345678">拨打号码</a>

// 处理拨打电话、发短信、发邮件以及Url跳转等等
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"{
//短信的处理
UIApplication.shared.openURL(navigationAction.request.url!);
decisionHandler(WKNavigationActionPolicy.cancel)
}
else if navigationAction.request.url?.scheme == "mailto"{
//邮件的处理
UIApplication.shared.openURL(navigationAction.request.url!);
decisionHandler(WKNavigationActionPolicy.cancel)
}
else{
decisionHandler(WKNavigationActionPolicy.allow)
}
}

// 处理拨打电话以及Url跳转等等
- (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及其之后，拨打电话系统弹出框延迟出现
dispatch_async(dispatch_get_global_queue(0, 0), ^{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:callPhone]];
});
}
else {
decisionHandler(WKNavigationActionPolicyAllow);
}
}