[Cupertino] CupertinoDatePicker's onDateTimeChanged called repeatedly when scrolling date/time wheel #92644
Description
Description
onDateTimeChanged is called for every item in scroll wheel in CupertinoDatePicker. While in native DatePicker, value change is called only when the wheel stops scrolling.
minimal code sample
import 'package:flutter/cupertino.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return CupertinoApp(
home: CupertinoPageScaffold(
navigationBar: const CupertinoNavigationBar(
middle: Text('Example'),
),
child: Center(
child: CupertinoDatePicker(
onDateTimeChanged: (DateTime dateTime) {
print('Date changed - $dateTime');
},
),
),
),
);
}
}
Here is a quick comparison
Flutter
Screen.Recording.2021-10-28.at.11.54.20.AM.mov
iOS
Screen.Recording.2021-10-28.at.11.55.15.AM.mov
flutter doctor -v
[✓] Flutter (Channel master, 2.6.0-12.0.pre.481, on macOS 12.0.1 21A559
darwin-x64, locale en-GB)
• Flutter version 2.6.0-12.0.pre.481 at /Users/tahatesser/Code/flutter
• Upstream repository git@github.com:NevercodeHQ/flutter.git
• Framework revision ccc90036b6 (25 hours ago), 2021-10-27 03:43:02 -0400
• Engine revision fbad0fda67
• Dart version 2.15.0 (build 2.15.0-257.0.dev)
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• Platform android-31, build-tools 30.0.2
• ANDROID_HOME = /Users/tahatesser/Code/SDK
• Java binary at: /Applications/Android
Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7281165)
• All Android licenses accepted.
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• Xcode at /Applications/Xcode.app/Contents/Developer
• CocoaPods version 1.11.2
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• 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 11.0.10+0-b96-7281165)
[✓] VS Code (version 1.61.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.27.0
[✓] Connected device (3 available)
• iPhone 13 (mobile) • 43523711-3842-481A-A3A0-0747D42B0963 • ios
• com.apple.CoreSimulator.SimRuntime.iOS-15-0 (simulator)
• macOS (desktop) • macos • darwin-x64
• macOS 12.0.1 21A559 darwin-x64
• Chrome (web) • chrome • web-javascript
• Google Chrome 95.0.4638.54
• No issues found!