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@chimon2000

chimon2000/bloc.page.dart

Last active Nov 3, 2020
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state_examples bloc page
class BlocPage extends StatefulWidget {
const BlocPage({Key key}) : super(key: key);
@override
_BlocPageState createState() => _BlocPageState();
}
class _BlocPageState extends State<BlocPage> {
TextEditingController _controller;
@override
void initState() {
super.initState();
_controller = TextEditingController();
}
@override
void dispose() {
_controller?.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text('My notes app: Bloc')),
body: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
FlatButton(
onPressed: () {
// Get a reference of the NotesCubit
// and add a note.
context.bloc<NotesCubit>().addNote();
_controller.clear();
},
child: Text('Create Note')),
TextField(
controller: _controller,
// Get a reference of the NotesCubit
// and update the input value.
onChanged: (value) =>
context.bloc<NotesCubit>().updateInput(value),
decoration: InputDecoration.collapsed(hintText: 'Add a note'),
),
Divider(),
// Subscribe to the NotesCubit's state
BlocBuilder<NotesCubit, NotesState>(
builder: (context, state) => Expanded(
child: ListView.builder(
itemBuilder: (context, index) =>
Note(text: state.notes[index]),
itemCount: state.notes.length,
),
),
)
],
),
),
);
}
}
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