import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Material 3 Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
      ),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String? _dropdownValue = 'Option 1'; // For DropdownButton

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: ListView(
          children: <Widget>[
            Text('Dropdown:', style: Theme.of(context).textTheme.titleMedium),
            const SizedBox(height: 8),
            DropdownButton<String>(
              value: _dropdownValue,
              icon: const Icon(Icons.arrow_drop_down),
              elevation: 16,
              isExpanded: true,
              style: TextStyle(color: Theme.of(context).colorScheme.primary),
              underline: Container(
                height: 2,
                color: Theme.of(context).colorScheme.primary,
              ),
              onChanged: (String? newValue) {
                setState(() {
                  _dropdownValue = newValue;
                });
              },
              items: <String>['Option 1', 'Option 2', 'Option 3', 'Option 4']
                  .map<DropdownMenuItem<String>>((String value) {
                return DropdownMenuItem<String>(
                  value: value,
                  child: Text(value),
                );
              }).toList(),
            ),
          ],
        ),
      ),
    );
  }
}