examples/api/lib/material/radio_list_tile/radio_list_tile.1.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flutter code sample for [RadioListTile].

import 'package:flutter/material.dart';

void main() => runApp(const RadioListTileApp());

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(useMaterial3: true),
      home: const RadioListTileExample(),
    );
  }
}

enum Groceries { pickles, tomato, lettuce }

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

  @override
  State<RadioListTileExample> createState() => _RadioListTileExampleState();
}

class _RadioListTileExampleState extends State<RadioListTileExample> {
  Groceries? _groceryItem = Groceries.pickles;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('RadioListTile Sample')),
      body: Column(
        children: <Widget>[
          RadioListTile<Groceries>(
            value: Groceries.pickles,
            groupValue: _groceryItem,
            onChanged: (Groceries? value) {
              setState(() {
                _groceryItem = value;
              });
            },
            title: const Text('Pickles'),
            subtitle: const Text('Supporting text'),
          ),
          RadioListTile<Groceries>(
            value: Groceries.tomato,
            groupValue: _groceryItem,
            onChanged: (Groceries? value) {
              setState(() {
                _groceryItem = value;
              });
            },
            title: const Text('Tomato'),
            subtitle: const Text('Longer supporting text to demonstrate how the text wraps and the radio is centered vertically with the text.'),
          ),
          RadioListTile<Groceries>(
            value: Groceries.lettuce,
            groupValue: _groceryItem,
            onChanged: (Groceries? value) {
              setState(() {
                _groceryItem = value;
              });
            },
            title: const Text('Lettuce'),
            subtitle: const Text("Longer supporting text to demonstrate how the text wraps and how setting 'RadioListTile.isThreeLine = true' aligns the radio to the top vertically with the text."),
            isThreeLine: true,
          ),
        ],
      ),
    );
  }
}