Flutter dart: Url launcher Not throw error Page

Question

I purposely put the wrong url so I can see my error page, but it doesn't show anything

this my code

class DetailPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // final Uri _url = Uri.parse('https://goo.gl/maps/HiKcRmtjE2if58aw7');
    final Uri _url = Uri.parse('adjja');

    final Uri _wa = Uri.parse('https://wa.me/62895378147657');

    
    
    Future<void> _launchUrl() async {
      if (!await launchUrl(_url)) {
        throw Navigator.push(
            context, MaterialPageRoute(builder: (context) => ErrorPage()));
      }
    }

   

    

Answer 1

Use try and catch block to handle the error because due to some unresolved intent problem in the package, it is not able to throw an error. Also while navigating you should only use the push function and not the throw prefix like the following code: -

Future<void> _launchUrl() async {
try {
  await launchUrl(_url);
} catch (e) {
  Navigator.push(
      context, MaterialPageRoute(builder: (context) => ErrorPage()));
  }
}

Answer 2

remove throw and You can check if url is valid or not by using canLaunchUrl method

 if (await canLaunchUrl(url)) {
  await launchUrl(
    url,
    mode: _useWebView
        ? LaunchMode.inAppWebView
        : LaunchMode.externalApplication,
  );
} else {
  Navigator.push(
        context, MaterialPageRoute(builder: (context) => ErrorPage()));
}