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| import 'package:flutter/material.dart'; | |
| void main() { | |
| runApp(MyApp()); | |
| } | |
| class MyApp extends StatelessWidget { | |
| @override | |
| Widget build(BuildContext context) { | |
| final appTitle = 'Orientation Demo'; | |
| return MaterialApp( | |
| title: appTitle, | |
| home: OrientationList( | |
| title: appTitle, | |
| ), | |
| ); | |
| } | |
| } | |
| class OrientationList extends StatelessWidget { | |
| final String title; | |
| OrientationList({Key key, this.title}) : super(key: key); | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| appBar: AppBar(title: Text(title)), | |
| body: OrientationBuilder( | |
| builder: (context, orientation) { | |
| return GridView.count( | |
| // Create a grid with 2 columns in portrait mode, or 3 columns in | |
| // landscape mode. | |
| crossAxisCount: orientation == Orientation.portrait ? 2 : 3, | |
| // Generate 100 widgets that display their index in the List. | |
| children: List.generate(100, (index) { | |
| return Center( | |
| child: Text( | |
| 'Item $index', | |
| style: Theme.of(context).textTheme.headline, | |
| ), | |
| ); | |
| }), | |
| ); | |
| }, | |
| ), | |
| ); | |
| } | |
| } |
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