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A Dart/Flutter example of an Index page allowing navigation to three screens
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| // Run this in https://dartpad.dartlang.org/flutter | |
| import 'package:flutter/material.dart'; | |
| void main() { | |
| runApp(MaterialApp( | |
| title: 'Navigation Basics', | |
| home: MainRoute(), | |
| )); | |
| } | |
| class MainRoute extends StatelessWidget { | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| appBar: AppBar( | |
| title: Text("Index"), | |
| ), | |
| body: Column( | |
| crossAxisAlignment: CrossAxisAlignment.stretch, | |
| //crossAxisAlignment: CrossAxisAlignment.center, | |
| //mainAxisSize: MainAxisSize.max, | |
| //mainAxisAlignment: MainAxisAlignment.center, | |
| //mainAxisAlignment: MainAxisAlignment.spaceAround, | |
| children: <Widget>[ | |
| Expanded( | |
| flex: 1, // 1/3 of space | |
| child: Container( | |
| child: RaisedButton( | |
| onPressed: () { | |
| Navigator.push( | |
| context, | |
| MaterialPageRoute(builder: (context) => FirstRoute()), | |
| ); | |
| }, | |
| child: Text('Goto 1'), | |
| color: Colors.blueGrey[50], | |
| ), | |
| ), | |
| ), | |
| Expanded( | |
| flex: 1, // 1/3 of space | |
| child: Container( | |
| child: FlatButton( | |
| onPressed: () { | |
| Navigator.push( | |
| context, | |
| MaterialPageRoute(builder: (context) => SecondRoute()), | |
| ); | |
| }, | |
| child: Text('Goto 2'), | |
| color: Colors.blueGrey[50], | |
| ), | |
| ), | |
| ), | |
| Expanded( | |
| flex: 1, // 1/3 of space | |
| child: Container( | |
| child: FlatButton( | |
| onPressed: () { | |
| Navigator.push( | |
| context, | |
| MaterialPageRoute(builder: (context) => ThirdRoute()), | |
| ); | |
| }, | |
| child: Text('Goto 3'), | |
| color: Colors.blueGrey[50], | |
| ), | |
| ), | |
| ), | |
| ], | |
| ), | |
| ); | |
| } | |
| } | |
| class FirstRoute extends StatelessWidget { | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| appBar: AppBar( | |
| title: Text('First Route'), | |
| ), | |
| body: Center( | |
| child: RaisedButton( | |
| child: Text('Goto 2'), | |
| onPressed: () { | |
| Navigator.push( | |
| context, | |
| MaterialPageRoute(builder: (context) => SecondRoute()), | |
| ); | |
| }, | |
| ), | |
| ), | |
| ); | |
| } | |
| } | |
| class SecondRoute extends StatelessWidget { | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| appBar: AppBar( | |
| title: Text("Second Route"), | |
| ), | |
| body: Center( | |
| child: RaisedButton( | |
| onPressed: () { | |
| Navigator.push( | |
| context, | |
| MaterialPageRoute(builder: (context) => ThirdRoute()), | |
| ); | |
| }, | |
| child: Text('Goto 3'), | |
| ), | |
| ), | |
| ); | |
| } | |
| } | |
| class ThirdRoute extends StatelessWidget { | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| appBar: AppBar( | |
| title: Text("Third Route"), | |
| ), | |
| body: Center( | |
| child: RaisedButton( | |
| onPressed: () { | |
| Navigator.push( | |
| context, | |
| MaterialPageRoute(builder: (context) => MainRoute()), | |
| ); | |
| }, | |
| child: Text('Go back!'), | |
| ), | |
| ), | |
| ); | |
| } | |
| } |
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