flutter_stream_notifiers 0.2.0

Provides a bunch of special notifiers derived from Flutter's ValueNotifier or ChangeNotifier, that additionally streams a value or notifier itself on a change notification.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_stream_notifiers/flutter_stream_notifiers.dart';

void main() async {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Stream Notifiers Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Flutter Stream Notifiers Example'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  TextEditingStreamController controller;
  String text = '';

  @override
  void initState() {
    super.initState();
    controller = TextEditingStreamController(text: 'a');
    controller.stream.listen((textEditingValue) {
      setState(() {
        text = textEditingValue.text;
      });
    });
  }

  @override
  void dispose() {
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            TextField(controller: controller),
            Text(
              text,
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
    );
  }
}