CountryListPick(
        // to show or hide flag
        isShowFlag: true,
        // true to show  title country
        isShowTitle: true,
        // true to show code phone country
        isShowCode: true,
        // to show or hide down icon
        isDownIcon: true,
        // to initial code number countrey
        initialSelection: '+62',
        // to get feedback data from picker
        onChanged: (CountryCode code) {
            // name of country
            print(code.name);
            // code of country
            print(code.code);
            // code phone of country
            print(code.dialCode);
            // path flag of country
            print(code.flagUri);
        },
    ),

import 'package:country_list_pick/country_list_pick.dart';
import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Country Code Pick'),
        ),
        body: Center(
          child: CountryListPick(
            isShowFlag: true,
            isShowTitle: true,
            isShowCode: true,
            isDownIcon: true,
            initialSelection: '+62',
            onChanged: (CountryCode code) {
              print(code.name);
              print(code.code);
              print(code.dialCode);
              print(code.flagUri);
            },
          ),
        ),
      ),
    );
  }
}