collection_notifiers 1.0.1 collection_notifiers: ^1.0.1 copied to clipboard
Collection Notifiers for better performance and syntax
import 'package:collection_notifiers/collection_notifiers.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
void main() {
WidgetsFlutterBinding.ensureInitialized();
runApp(const ProviderScope(child: App()));
}
class App extends StatelessWidget {
const App({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return const MaterialApp(home: Home());
}
}
final setNotifier =
ChangeNotifierProvider.autoDispose((ref) => SetNotifier<int>([1, 1, 1]));
final listProvider =
ChangeNotifierProvider((ref) => ListNotifier<int>([1, 2, 3]));
final mapProvider =
ChangeNotifierProvider((ref) => MapNotifier<String, int>({'a': 1}));
class Home extends ConsumerWidget {
const Home({Key? key}) : super(key: key);
@override
Widget build(BuildContext context, WidgetRef ref) {
ref.read(mapProvider)['a'] = 1;
ref.read(listProvider)[0] = 1;
return Scaffold(
body: ListView(
children: ListTile.divideTiles(
context: context,
tiles: List.generate(10, (index) => index).map((e) {
return CheckboxListTile(
title: Text(e.toString()),
value: ref.watch(setNotifier).contains(e),
onChanged: (value) {
if (value == true) {
ref.read(setNotifier).add(e);
} else {
ref.read(setNotifier).remove(e);
}
},
);
}),
).toList(),
),
);
}
}