Test DropDown Search

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

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage(),
    );
  }
}
class HomePage extends StatefulWidget{
  @override
  _HomePageState createState()==> _HomePageState();
}

class _HomePageState extends State<HomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Dropdown"),
      ),
      body: Center(
        child: DropdownSearch<String>(
    mode: Mode.MENU,
    showSelectedItem: true,
    items: ["Brazil", "Italia (Disabled)", "Tunisia", 'Canada'],
    label: "Menu mode",
    hint: "country in menu mode",
    popupItemDisabled: (String s) => s.startsWith('I'),
    onChanged: print,
    selectedItem: "Brazil"),

      ),
    );
  }
}