RawKeyboardListener triggers soft keyboard on Android #70546
Description
This was spun off from #67915.
On Android, RawKeyboardListener triggers the soft keyboard when it receives input. This only happens after a TextField has received focus once. Until a TextField has received focus, the soft keyboard remains hidden.
Steps to Reproduce
- Run
flutter create bug. - Replace
main.dartwith this:
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final FocusNode rawKbFocusNode = FocusNode();
final FocusNode textFocusNode = FocusNode();
bool renderTextField = true;
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RawKeyboardListener(
onKey: (event) {
print(event);
},
focusNode: rawKbFocusNode,
autofocus: true,
child: renderTextField
? TextField(
focusNode: textFocusNode,
)
: Text('No textfield'),
),
RaisedButton(
child: Text('Focus RawKeyboardListener'),
onPressed: () => rawKbFocusNode.requestFocus(),
),
RaisedButton(
child: Text('Toggle textfield'),
onPressed: () => setState(() {
renderTextField = !renderTextField;
}),
)
],
),
),
);
}
}- Use a hardware keyboard to enter text. Key events are printed, no soft keyboard is visible.
- Focus the text field. Move focus back to
RawKeyboardListener. - Use the hardware keyboard again to enter text. Now the soft keyboard will pop up.
- Dismiss the soft keyboard and enter some more text. Soft keyboard will show again.
- Even if the TextField is not rendered anymore, the same behavior keeps happening.
Expected results:
I expected the soft keyboard to remain hidden. As long as noTextField receives focus, things behave as expected.
Only after a TextField has received focus once, the soft keyboard will keep popping up when the RawKeyboardListener receives input.
Actual results:
The soft keyboard shows up.
Here's a gif showing the behavior.
All input is typed via a hardware keyboard.
flutter doctor -v
[✓] Flutter (Channel master, 1.24.0-8.0.pre.230, on Mac OS X 10.15.7 19H15 darwin-x64, locale en-GB)
• Flutter version 1.24.0-8.0.pre.230 at /Users/Pascal/.local/flutter-master
• Framework revision af5eb3b987 (32 hours ago), 2020-11-13 19:57:15 +0800
• Engine revision dddb532b5c
• Dart version 2.12.0 (build 2.12.0-37.0.dev)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
• Android SDK at /Users/Pascal/Library/Android/sdk
• Platform android-30, build-tools 30.0.1
• ANDROID_HOME = /Users/Pascal/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 12.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.1, Build version 12A7403
• CocoaPods version 1.9.3
[✓] Android Studio (version 4.1)
• Android Studio at /Applications/Android Studio.app/Contents
• 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 1.8.0_242-release-1644-b3-6915495)
[✓] IntelliJ IDEA Community Edition (version 2019.3.2)
• IntelliJ at /Applications/IntelliJ IDEA CE.app
• 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
[✓] VS Code (version 1.51.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.16.0
[✓] Connected device (2 available)
• sdk gphone x86 64 (mobile) • emulator-5554 • android-x64 • Android 11 (API 30) (emulator)
• macOS (desktop) • macos • darwin-x64 • Mac OS X 10.15.7 19H15 darwin-x64
• No issues found!