// 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. import 'package:flutter/material.dart'; /// Flutter code sample for [Checkbox]. void main() => runApp(const CheckboxExampleApp()); class CheckboxExampleApp extends StatelessWidget { const CheckboxExampleApp({super.key}); @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar(title: const Text('Checkbox Sample')), body: const Center( child: CheckboxExample(), ), ), ); } } class CheckboxExample extends StatefulWidget { const CheckboxExample({super.key}); @override State<CheckboxExample> createState() => _CheckboxExampleState(); } class _CheckboxExampleState extends State<CheckboxExample> { bool isChecked = false; @override Widget build(BuildContext context) { Color getColor(Set<MaterialState> states) { const Set<MaterialState> interactiveStates = <MaterialState>{ MaterialState.pressed, MaterialState.hovered, MaterialState.focused, }; if (states.any(interactiveStates.contains)) { return Colors.blue; } return Colors.red; } return Checkbox( checkColor: Colors.white, fillColor: MaterialStateProperty.resolveWith(getColor), value: isChecked, onChanged: (bool? value) { setState(() { isChecked = value!; }); }, ); } }