A Flutter Country Picker Widget with support to country dialing codes

 @override
 Widget build(BuildContext context) {
   return new Scaffold(
     appBar: new AppBar(
       title: Text('Flutter Country Picker Demo'),
     ),
     body: new Center(
       child: CountryPicker(
         onChanged: (Country country) {
           setState(() {
             _selected = country;
           });
         },
         selectedCountry: _selected,
       ),
     ),
   );
 }