eventizer 0.0.3

transform your flutter package with eventizer for asynchronous state management

example/readme.md

Example

This exaple provide some insight of how to use this package compare this code with the provided flutter's template code (also provided at the end)

using eventizer

const EventID incEvent = EventID(dstr: 'incEvent');

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

class MyApp extends StatelessWidget with EventProducer {
  Event _ev;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter Demo Home Page'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Text(
                'You have pushed the button this many times:',
              ),
              EventWidget(
                  buildEvent: incEvent.toEvent(0),
                  consumers: {incEvent: eventTesterPassAll},
                  builder: (context, widget, event) {
                    _ev = event;
                    return Text(
                      '${_ev.get<int>()}',
                      style: Theme.of(context).textTheme.headline4,
                    );
                  }),
            ],
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () => triggerEvent(incEvent.toEvent(_ev.get<int>() + 1)),
          tooltip: 'Increment',
          child: Icon(Icons.add),
        ),
      ),
    );
  }
}

flutter's template code

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

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

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

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), 
    );
  }
}