Unexpected showDatePicker behavior when changing year #81547
Description
It's not clear if this is a bug or intended behavior, but at any rate the Flutter Material date picker has a behavior that differs from that of the native Android date picker in such a way that is likely to cause users accustomed to the native behavior to select the wrong date in a Flutter app.
Steps to Reproduce
- Open a date picker with
showDatePickerwithinitialDate: DateTime(2021, 4, 30) - Tap the year control and select 2015 (or any other year)
Expected results:
4/30/2015 ought to be the newly selected date i.e. the month/day in the newly selected year that corresponds to that of the previously selected date (or closest available).
Actual results:
The date picker displays April in 2015, but 4/30/2021 remains the selected date. If the user taps OK at this point intending to select 4/30/2015 then they will actually select 4/30/2021.
RPReplay_Final1619795575.MP4
Logs
[✓] Flutter (Channel stable, 2.0.3, on Mac OS X 10.15.7 19H1030 darwin-x64, locale en-US)
• Flutter version 2.0.3 at /Users/jonathan.joelson/repos/flutter
• Framework revision 4d7946a68d (6 weeks ago), 2021-03-18 17:24:33 -0700
• Engine revision 3459eb2436
• Dart version 2.12.2
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at /Users/jonathan.joelson/Library/Android/sdk
• Platform android-30, build-tools 30.0.3
• 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 at /Applications/Xcode.app/Contents/Developer
• Xcode 12.4, Build version 12D4e
• CocoaPods version 1.10.1
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] 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)
[✓] VS Code (version 1.55.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.21.0