Getting an exception when pressing AltGr key for Flutter Web #113836
Description
Steps to Reproduce
- Run any Flutter Web with a TextFormField widget
- Focus on text box (in Chrome browser)
- Press
AltGrkey - Debug Console shows an exception raised
Expected results:
No exception
Actual results:
══╡ EXCEPTION CAUGHT BY SERVICES LIBRARY ╞══════════════════════════════════════════════════════════
The following assertion was thrown during a platform message callback:
Assertion failed:
file:///home/warcayac/Applications/flutter/packages/flutter/lib/src/services/raw_keyboard.dart:682:7
../…/services/raw_keyboard.dart:682
event is! RawKeyDownEvent || _keysPressed.isNotEmpty
"Attempted to send a key down event when no keys are in keysPressed. This state can occur if the key
event being sent doesn't properly set its modifier flags. This was the event:
RawKeyDownEvent#0c4a4(logicalKey: LogicalKeyboardKey#9d80f(keyId: \"0x17032c92bb\", keyLabel: \"\",
debugName: \"Key with ID 0x017032c92bb\"), physicalKey: PhysicalKeyboardKey#700e6(usbHidUsage:
\"0x000700e6\", debugName: \"Alt Right\"), repeat: false) and its data:
RawKeyEventDataWeb#c5204(code: AltRight, key: AltGraph, location: 2, metaState: 0, keyCode: 225)"
When the exception was thrown, this was the stack:
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 266:49 throw_
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 29:3 assertFailed
packages/flutter/src/services/raw_keyboard.dart 682:49 handleRawKeyEvent
packages/flutter/src/services/hardware_keyboard.dart 878:30 handleRawKeyMessage
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async
packages/flutter/src/services/hardware_keyboard.dart 850:51 handleRawKeyMessage
packages/flutter/src/services/platform_channel.dart 197:49 <fn>
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async
packages/flutter/src/services/platform_channel.dart 196:58 <fn>
packages/flutter/src/services/binding.dart 387:35 <fn>
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async
packages/flutter/src/services/binding.dart 384:98 <fn>
lib/_engine/engine/platform_dispatcher.dart 1199:13 invoke2
lib/ui/channel_buffers.dart 25:12 invoke
lib/ui/channel_buffers.dart 65:7 push
lib/ui/channel_buffers.dart 130:16 push
lib/_engine/engine/platform_dispatcher.dart 364:25 invokeOnPlatformMessage
lib/_engine/engine/keyboard.dart 130:39 [_handleHtmlEvent]
lib/_engine/engine/keyboard.dart 32:7 <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 334:14 _checkAndCall
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 339:39 dcall
════════════════════════════════════════════════════════════════════════════════════════════════════
Code sample
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'core/app/theme.dart';
import 'shared/responsive/device.dart';
void main() {
WidgetsFlutterBinding.ensureInitialized(); // importante
if (WDevice.isAndroid) {
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle( // only Android
statusBarColor: Colors.transparent,
));
SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky); // Android only
}
Paint.enableDithering = true;
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
WDevice.context = context;
return _buildMaterialApp(context);
}
Widget _buildMaterialApp(BuildContext context) {
return MaterialApp(
title: 'Welcome to Flutter',
debugShowCheckedModeBanner: false,
theme: WApp.material.getThemeData(context),
home: Scaffold(
body: Center(
child: TextField(),
),
),
);
}
}Logs
**FLUTTER RUN VERBOSE** is moved to next comment because exceeded limit of chars.....
$ flutter analyze
Analyzing demodemo...
No issues found! (ran in 2.3s)
$ flutter doctor -v
[✓] Flutter (Channel stable, 3.3.5, on EndeavourOS 6.0.2-zen1-1-zen, locale en_US.UTF-8)
• Flutter version 3.3.5 on channel stable at /home/warcayac/Applications/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision d9111f6402 (2 days ago), 2022-10-19 12:27:13 -0700
• Engine revision 3ad69d7be3
• Dart version 2.18.2
• DevTools version 2.15.0
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /home/warcayac/Android/Sdk
• Platform android-33, build-tools 33.0.0
• ANDROID_SDK_ROOT = /home/warcayac/Android/Sdk
• Java binary at: /opt/android-studio/jre/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
• All Android licenses accepted.
[✓] Chrome - develop for the web
• CHROME_EXECUTABLE = /bin/google-chrome-stable
[✓] Android Studio (version 2021.3)
• Android Studio at /opt/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 11.0.13+0-b1751.21-8125866)
[✓] Connected device (1 available)
• Chrome (web) • chrome • web-javascript • Google Chrome 106.0.5249.119
[✓] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!
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Important issues not at the top of the work listEntering text in a text field or keyboard related problemsStack traces logged to the consoleflutter/engine repository. See also e: labels.Found to occur in 3.3Found to occur in 3.5The issue has been confirmed reproducible and is ready to work onWeb applications specificallyIssue is closed as already fixed in a newer version
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