How to allow mailto and tel URL schemes in WebView Flutter?

Question

I am developing WebApp in Flutter but when I click on tel:987654321 or mailto: links going page Not Found, To open the default app in mobile I am u

Answer 1

navigationDelegate: (NavigationRequest request) {
  if(request.url.contains("mailto:")) {
    launch(request.url);
    return NavigationDecision.prevent;
  }
  else if (request.url.contains("tel:")) {
    launch(request.url);
    return NavigationDecision.prevent;
  }
},