DropdownMenu keyboard navigation is broken #147253
Description
Steps to reproduce
- Run sample code on Windows platform
- Press tab until the handle of the DropdownMenu is focused
- Press enter to open the menu
- Press the down key to navigate
Expected results
The menu opens with the first option selected and when pressing the Down key the options should cycle downwards.
Actual results
The menu opens with the second option selected and when pressing the down key cycles until the option g (which is the initial selection).
If I instead try to cycle upwards using the Up key, the cycle completes and restart from the end once the start of the list is reached. However, the initially selected option is skipped.
There are also other glitches like the text not being in sync with the selected menu option, as shown on the screenshot below.
Code sample
Code sample
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
enum Units {
unit,
kg,
g,
l,
cc;
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
Units? _unit = Units.g;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: DropdownMenu<Units>(
initialSelection: _unit,
dropdownMenuEntries: Units.values
.map((unit) => DropdownMenuEntry(
value: unit,
label: unit.name,
))
.toList(),
onSelected: (value) {
setState(() {
_unit = value;
});
},
),
),
);
}
}Screenshots or Video
Screenshots
Mismatched text and menu option when cycling upwards:
Logs
No response
Flutter Doctor output
Doctor output
> flutter doctor -v
[✓] Flutter (Channel stable, 3.19.5, on Microsoft Windows [Versi¢n 10.0.22631.3447], locale es-AR)
• Flutter version 3.19.5 on channel stable at D:\diego\PROGRAMACION\Tools\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 300451adae (4 weeks ago), 2024-03-27 21:54:07 -0500
• Engine revision e76c956498
• Dart version 3.3.3
• DevTools version 2.31.1
[✓] Windows Version (Installed version of Windows is version 10 or higher)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
• Android SDK at D:\diego\PROGRAMACION\SDKs\Android
• Platform android-34, build-tools 33.0.1
• Java binary at: D:\diego\PROGRAMACION\Tools\android-studio\jbr\bin\java
• Java version OpenJDK Runtime Environment (build 17.0.9+0--11185874)
• All Android licenses accepted.
[✓] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[✓] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.9.6)
• Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
• Visual Studio Community 2022 version 17.9.34728.123
• Windows 10 SDK version 10.0.22621.0
[✓] Android Studio (version 2023.2)
• Android Studio at D:\diego\PROGRAMACION\Tools\android-studio
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.9+0--11185874)
[✓] VS Code (version 1.88.0)
• VS Code at C:\Users\diego\AppData\Local\Programs\Microsoft VS Code
• Flutter extension can be installed from:
🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[✓] Connected device (3 available)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Versi¢n 10.0.22631.3447]
• Chrome (web) • chrome • web-javascript • Google Chrome 124.0.6367.61
• Edge (web) • edge • web-javascript • Microsoft Edge 123.0.2420.65
[✓] Network resources
• All expected network resources are available.
• No issues found!