Created
September 11, 2019 04:09
-
-
Save jtlapp/4eb3f47d3806c144c5a172933fe6c1f4 to your computer and use it in GitHub Desktop.
Flutter Provider sharing static state
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import 'package:flutter/material.dart'; | |
import 'package:provider/provider.dart'; | |
void main() => runApp(MyApp()); | |
class MyApp extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
title: 'Flutter Demo', | |
home: MyHomePage(), | |
); | |
} | |
} | |
// Provider with unchanging state | |
class User { | |
User(this.name); | |
final String name; | |
} | |
var currentUser = User("Frodo Baggins"); | |
class MyHomePage extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return Provider<User>.value( | |
value: currentUser, | |
child: Scaffold( | |
appBar: AppBar( | |
title: Consumer<User>( | |
builder: (context, user, child) => | |
Text("Page for ${user.name}"), | |
), | |
), | |
body: MyWidget(), | |
), | |
); | |
} | |
} | |
class MyWidget extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return Center( | |
child: Consumer<User>( | |
builder: (context, user, child) => Text( | |
'User: ${user.name}', | |
style: Theme.of(context).textTheme.display1, | |
), | |
), | |
); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment