reactiv 0.2.3
reactiv: ^0.2.3 copied to clipboard
Reactive state management approach and dependency injection inspired by GetX
import 'package:flutter/material.dart';
import 'package:reactiv/reactiv.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
void initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: const LaunchPage(),
);
}
}
class LaunchPage extends StatelessWidget {
const LaunchPage({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Center(
child: ElevatedButton(
onPressed: () {
Navigator.of(context).push(MaterialPageRoute(builder: (context) {
return const TestPageScreen();
}));
},
child: const Text('Next Page'),
),
);
}
}
class TestPageController extends ReactiveController {
final ReactiveInt outerCount = 0.reactiv;
final innerCount = 0.reactiv;
// List<int> testList = List<int>.empty();
@override
void onInit() {
super.onInit();
// innerCount.bindStream(outerCount.notifier.stream);
innerCount.addListener((value) {
Logger.info(value, tag: 'Listener 1');
});
innerCount.addListener((value) {
Logger.info(value, tag: 'Listener 2');
});
}
incrementOuterCount() {
outerCount.value++;
}
incrementInnerCount() {
innerCount.value++;
}
}
class TestPageScreen extends ReactiveStateWidget<TestPageController> {
const TestPageScreen({Key? key}) : super(key: key, autoDispose: false);
@override
TestPageController bindController() => TestPageController();
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Observer(
listenable: controller.outerCount,
listener: (outerCount) {
return Column(
children: [
Center(child: Text('outer count : $outerCount')),
Observer(
listenable: controller.innerCount,
listener: (count) {
return Center(child: Text('Inner Count : $count'));
},
),
ElevatedButton(
onPressed: () {
controller.incrementOuterCount();
},
child: const Text('+ outer count'),
),
const SizedBox(height: 20),
ElevatedButton(
onPressed: () {
showDialog(
context: context,
builder: (context) {
return const AlertDialog(
content: Text('hello world'),
);
});
},
child: const Text('Dialogue'),
),
const SizedBox(height: 20),
],
);
}),
),
floatingActionButton: FloatingActionButton.extended(
onPressed: () {
controller.incrementInnerCount();
},
tooltip: 'Increment',
label: const Text('Inner Count'),
icon: const Icon(Icons.add),
),
);
}
}