Created
January 24, 2023 23:25
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Adaptive UI Talk: MenuBar example
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| // Copyright 2014 The Flutter Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| /// Flutter code sample for [MenuBar]. | |
| import 'dart:io'; | |
| import 'package:flutter/material.dart'; | |
| import 'package:flutter/services.dart'; | |
| void main() => runApp(const MenuBarExample()); | |
| class ApplicationMenu extends StatelessWidget with PreferredSizeWidget { | |
| const ApplicationMenu({super.key}); | |
| @override | |
| Size get preferredSize => const Size(double.infinity, 48); | |
| void _showAbout(BuildContext context) { | |
| showAboutDialog( | |
| context: context, | |
| applicationName: 'Menu Example', | |
| applicationIcon: const FlutterLogo(), | |
| applicationVersion: '1.0.0', | |
| ); | |
| } | |
| @override | |
| Widget build(BuildContext context) { | |
| return MenuBar( | |
| children: <Widget>[ | |
| SubmenuButton( | |
| menuChildren: <Widget>[ | |
| MenuItemButton( | |
| onPressed: () => _showAbout(context), | |
| shortcut: const SingleActivator(LogicalKeyboardKey.keyA, meta: true), | |
| child: const MenuAcceleratorLabel("&About"), | |
| ), | |
| const Divider(), | |
| MenuItemButton( | |
| onPressed: () => exit(0), | |
| shortcut: const SingleActivator(LogicalKeyboardKey.keyQ, meta: true), | |
| child: const MenuAcceleratorLabel('&Quit'), | |
| ), | |
| ], | |
| child: const MenuAcceleratorLabel("&Example App"), | |
| ), | |
| ], | |
| ); | |
| } | |
| } | |
| class MenuBarExample extends StatelessWidget { | |
| const MenuBarExample({super.key}); | |
| @override | |
| Widget build(BuildContext context) { | |
| return MaterialApp( | |
| theme: ThemeData.light().copyWith(visualDensity: VisualDensity.compact), | |
| home: const Scaffold( | |
| appBar: ApplicationMenu(), | |
| body: Center( | |
| child: AspectRatio( | |
| aspectRatio: 1.0, | |
| child: FlutterLogo(), | |
| ), | |
| ), | |
| ), | |
| ); | |
| } | |
| } |
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