Reviewed code

example/lib/drawer.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 
-import 'main.dart';
+import 'routes.dart';
 
 class AppDrawer extends StatelessWidget {
  const AppDrawer({Key? key}) : super(key: key);

example/lib/examples/button_builder_example/example.dart

@@ -13,7 +13,7 @@ class _ButtonBuilderExampleState extends State<ButtonBuilderExample> {
  late GroupButtonController _checkboxesController;
  late GroupButtonController _radioController;
 
- final _checkboxButtons = [
+ final List<String> _checkboxButtons = [
  'Michael Jordan',
  'Magic Johnson',
  'LeBron James',
@@ -22,7 +22,7 @@ class _ButtonBuilderExampleState extends State<ButtonBuilderExample> {
  'Larry Bird',
  ];
 
- final _radioButtons = [
+ final List<String> _radioButtons = [
  'Cola',
  'Potato chips',
  'Pudding',
@@ -48,9 +48,16 @@ class _ButtonBuilderExampleState extends State<ButtonBuilderExample> {
  super.initState();
  }
 
+ @override
+ void dispose() {
+ _checkboxesController.dispose();
+ _radioController.dispose();
+ super.dispose();
+ }
+
  @override
  Widget build(BuildContext context) {
- final theme = Theme.of(context);
+ final ThemeData theme = Theme.of(context);
 
  return Scaffold(
  drawer: const AppDrawer(),

example/lib/examples/common_example/example.dart

@@ -5,7 +5,7 @@ import 'package:group_button/group_button.dart';
 class CommonExample extends StatelessWidget {
  CommonExample({Key? key}) : super(key: key);
 
- final controller = GroupButtonController(
+ final GroupButtonController controller = GroupButtonController(
  selectedIndex: 20,
  selectedIndexes: [0, 1, 2, 3, 4],
  disabledIndexes: [10, 12, 13, 14, 15, 23],

example/lib/examples/customizable_example/customizable_example.dart

@@ -7,24 +7,25 @@ import 'package:group_button/group_button.dart';
 
 class CustomizableExample extends StatelessWidget {
  CustomizableExample({Key? key}) : super(key: key);
- final controller = GroupButtonController(
+ final GroupButtonController controller = GroupButtonController(
  onDisablePressed: (i) => debugPrint('Disable Button #$i pressed'),
  );
- final customizableController = CustomizableExampleController();
+ final CustomizableExampleController customizableController =
+ CustomizableExampleController();
 
  @override
  Widget build(BuildContext context) {
- return AnimatedBuilder(
- animation: customizableController,
- builder: (context, child) {
- return Scaffold(
- drawer: const AppDrawer(),
-  appBar: AppBar(
-  title: Text(
-  'GroupButton 5.0.0',
-  ),
-  ),
- body: Center(
+ return Scaffold(
+ drawer: const AppDrawer(),
+ appBar: AppBar(
+ title: Text(
+ 'GroupButton 5.0.0',
+ ),
+ ),
+ body: AnimatedBuilder(
+ animation: customizableController,
+ builder: (context, child) {
+ return Center(
  child: GroupButton(
  controller: controller,
  isRadio: false,
@@ -34,13 +35,13 @@ class CustomizableExample extends StatelessWidget {
  onSelected: (val, i, selected) =>
  debugPrint('Button: $val index: $i $selected'),
  ),
- ),
-  bottomNavigationBar: GroupButtonBottomPanel(
-  controller: controller,
-  customizableController: customizableController,
-  ),
- );
- },
+ );
+ },
+ ),
+ bottomNavigationBar: GroupButtonBottomPanel(
+ controller: controller,
+ customizableController: customizableController,
+ ),
  );
  }
 }

example/lib/examples/customizable_example/customizable_example_controller.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
 class CustomizableExampleController extends ChangeNotifier {
- var _buttonsCount = 25;
+ int _buttonsCount = 25;
 
  int get buttonsCount => _buttonsCount;
  set buttonsCount(int count) {

example/lib/examples/customizable_example/widgets/group_button_bottom_panel.dart

@@ -14,15 +14,17 @@ class GroupButtonBottomPanel extends StatelessWidget {
 
  @override
  Widget build(BuildContext context) {
+ final ThemeData theme = Theme.of(context);
+ final Size size = MediaQuery.of(context).size;
  return SizedBox(
  height: 300,
  child: Column(
  children: [
  Container(
  height: 100,
- width: MediaQuery.of(context).size.width,
+ width: size.width,
  decoration: BoxDecoration(
- color: Theme.of(context).cardColor,
+ color: theme.cardColor,
  boxShadow: [
  BoxShadow(
  color: Colors.grey[100]!,
@@ -39,7 +41,7 @@ class GroupButtonBottomPanel extends StatelessWidget {
  padding: const EdgeInsets.only(left: 30.0),
  child: Text(
  'Buttons count ${customizableController.buttonsCount}',
- style: Theme.of(context).textTheme.headline6,
+ style: theme.textTheme.headline6,
  ),
  ),
  Slider(
@@ -56,9 +58,9 @@ class GroupButtonBottomPanel extends StatelessWidget {
  ),
  Container(
  height: 200,
- width: MediaQuery.of(context).size.width,
+ width: size.width,
  decoration: BoxDecoration(
- color: Theme.of(context).cardColor,
+ color: theme.cardColor,
  boxShadow: [
  BoxShadow(
  color: Colors.grey[100]!,
@@ -67,57 +69,55 @@ class GroupButtonBottomPanel extends StatelessWidget {
  )
  ],
  ),
- child: Padding(
- padding: const EdgeInsets.only(left: 30.0),
- child: Column(
- mainAxisAlignment: MainAxisAlignment.center,
- crossAxisAlignment: CrossAxisAlignment.start,
- children: [
- Text(
- 'Managed by controller',
- style: Theme.of(context).textTheme.headline6,
- ),
- Wrap(
- spacing: 10,
- children: [
- ElevatedButton(
- onPressed: () => controller.selectIndex(0),
- child: const Text('Select #1'),
- ),
- ElevatedButton(
- onPressed: () => controller.unselectIndex(0),
- child: const Text('Unelect #1'),
- ),
- ElevatedButton(
- onPressed: () =>
- controller.selectIndexes([0, 1, 2, 3, 4]),
- child: const Text('Select line'),
- ),
- ElevatedButton(
- onPressed: () =>
- controller.unselectIndexes([0, 1, 2, 3, 4]),
- child: const Text('Uelect line'),
- ),
- ElevatedButton(
- onPressed: () =>
- controller.toggleIndexes([0, 1, 2, 3, 4]),
- child: const Text('Toggle line'),
- ),
- ElevatedButton(
- onPressed: () => controller
- ..unselectAll()
- ..selectIndexes([2, 7, 12, 17, 22])
- ..selectIndexes([10, 11, 12, 13, 14]),
- child: const Text('Make +'),
- ),
- ElevatedButton(
- onPressed: () => controller.unselectAll(),
- child: const Text('Unselect all'),
- ),
- ],
- ),
- ],
- ),
+ child: Column(
+ mainAxisAlignment: MainAxisAlignment.center,
+ crossAxisAlignment: CrossAxisAlignment.center,
+ children: [
+ Text(
+ 'Managed by controller',
+ style: theme.textTheme.headline6,
+ ),
+ Wrap(
+ spacing: 10,
+ alignment: WrapAlignment.center,
+ children: [
+ ElevatedButton(
+ onPressed: () => controller.selectIndex(0),
+ child: const Text('Select #1'),
+ ),
+ ElevatedButton(
+ onPressed: () => controller.unselectIndex(0),
+ child: const Text('Unselect #1'),
+ ),
+ ElevatedButton(
+ onPressed: () =>
+ controller.selectIndexes([0, 1, 2, 3, 4]),
+ child: const Text('Select line'),
+ ),
+ ElevatedButton(
+ onPressed: () =>
+ controller.unselectIndexes([0, 1, 2, 3, 4]),
+ child: const Text('Unselect line'),
+ ),
+ ElevatedButton(
+ onPressed: () =>
+ controller.toggleIndexes([0, 1, 2, 3, 4]),
+ child: const Text('Toggle line'),
+ ),
+ ElevatedButton(
+ onPressed: () => controller
+ ..unselectAll()
+ ..selectIndexes([2, 7, 12, 17, 22])
+ ..selectIndexes([10, 11, 12, 13, 14]),
+ child: const Text('Make +'),
+ ),
+ ElevatedButton(
+ onPressed: () => controller.unselectAll(),
+ child: const Text('Unselect all'),
+ ),
+ ],
+ ),
+ ],
  ),
  ),
  ],

example/lib/examples/extended_example/checkbox_example_part.dart

@@ -1,7 +1,7 @@
 part of 'example.dart';
 
 Widget _buildCheckboxExample(GroupingType groupingType, {Axis? direction}) {
- return ScrollIjector(
+ return ScrollInjector(
  groupingType: groupingType,
  child: Padding(
  padding: const EdgeInsets.all(10.0),

example/lib/examples/extended_example/example.dart

@@ -9,7 +9,7 @@ part 'radio_example_part.dart';
 part 'checkbox_example_part.dart';
 
 class GroupButtonExtendedExample extends StatelessWidget {
- GroupButtonExtendedExample({Key? key}) : super(key: key);
+ const GroupButtonExtendedExample({Key? key}) : super(key: key);
 
  @override
  Widget build(BuildContext context) {

example/lib/examples/extended_example/helper_widgets/scroll_ijector.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:group_button/group_button.dart';
 
-class ScrollIjector extends StatelessWidget {
- const ScrollIjector({
+class ScrollInjector extends StatelessWidget {
+ const ScrollInjector({
  Key? key,
  required this.child,
  required this.groupingType,

example/lib/examples/extended_example/radio_example_part.dart

@@ -1,7 +1,7 @@
 part of 'example.dart';
 
 Widget _buildRadioExample(GroupingType groupingType, {Axis? direction}) {
- return ScrollIjector(
+ return ScrollInjector(
  groupingType: groupingType,
  child: Padding(
  padding: const EdgeInsets.all(10.0),

example/lib/examples/extended_example/utils/extended_example_controller.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
 class ExtendedExampleController extends ChangeNotifier {
- var _selectedGroupingType = 0;
+ int _selectedGroupingType = 0;
 
  int get selectedGroupingType => _selectedGroupingType;
  set selectedGroupingType(int value) {

example/lib/examples/generics_example/generics_example.dart

@@ -5,12 +5,12 @@ import 'package:group_button/group_button.dart';
 class GenericsExample extends StatelessWidget {
  GenericsExample({Key? key}) : super(key: key);
 
- final controller = GroupButtonController(
+ final GroupButtonController controller = GroupButtonController(
  selectedIndex: 0,
  onDisablePressed: (i) => print('Button #$i is disabled'),
  );
 
- final day = DateTime(2022, 4, 9);
+ final DateTime day = DateTime(2022, 4, 9);
 
  @override
  Widget build(BuildContext context) {

example/lib/examples/provider_example/models/exercise.dart

@@ -6,7 +6,7 @@ class Exercise {
  final List<Question> questions;
 
  void updateAnswer(int questionIndex, int index, {required bool value}) =>
- questions[questionIndex].updateAnsver(index, value: value);
+ questions[questionIndex].updateAnswer(index, value: value);
 
  @override
  String toString() => 'Exercise(questions: $questions)';

example/lib/examples/provider_example/models/question.dart

@@ -13,13 +13,13 @@ class Question {
  List<bool> answers;
  List<bool> userAnswers;
 
- void updateAnsver(int index, {required bool value}) {
+ void updateAnswer(int index, {required bool value}) {
  userAnswers[index] = value;
  }
 
  List<int> get selectedIndexes {
  final indexes = <int>[];
- for (var i = 0; i < userAnswers.length; i++) {
+ for (int i = 0; i < userAnswers.length; i++) {
  if (userAnswers[i]) {
  indexes.add(i);
  }

example/lib/examples/provider_example/providers/exercises_provider.dart

@@ -2,24 +2,24 @@ import 'package:example/examples/provider_example/models/models.dart';
 import 'package:example/examples/provider_example/models/question.dart';
 import 'package:flutter/material.dart';
 
-class ExarcisesProvider extends ChangeNotifier {
- var _exercise = Exercise(
+class ExercisesProvider extends ChangeNotifier {
+ Exercise _exercise = Exercise(
  questions: [
  Question(
- 'Wich numbers less then 3?',
+ 'Which numbers less then 3?',
  [true, true, false, false],
  [false, false, false, false],
  ['0', '1', '8', '9'],
  ),
  Question(
- 'Wich numbers more then 3?',
+ 'Which numbers more then 3?',
  [false, false, true, true],
  [false, false, false, false],
  ['1', '-10', '11', '9'],
  ),
  ],
  );
- var _selectedIndex = 0;
+ int _selectedIndex = 0;
 
  Exercise get exercise => _exercise;
  set exercise(Exercise val) {