CupertinoPicker does not respect _kOverAndUnderCenterOpacity #70933
Description
Steps to Reproduce
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) => MaterialApp(
title: 'CupertinoPicker Bug',
theme: ThemeData(primarySwatch: Colors.blue),
home: MyHomePage(),
);
}
class MyHomePage extends StatelessWidget {
MyHomePage({Key key}) : super(key: key);
List<String> samples = ["one", "two", "three", "four", "five"];
@override
Widget build(BuildContext context) => Scaffold(
appBar: AppBar(title: Text('CupertinoPicker Bug')),
body: Center(
child: SizedBox(
height: 300.0,
child: CupertinoPicker.builder(
childCount: samples.length,
itemExtent: 26,
itemBuilder: (context, index) => Text(samples[index]),
onSelectedItemChanged: (_) {},
),
),
),
);
}
Expected results:
Not selected items should appear with lower opacity.
Actual results:
Not selected items do not appear at all.
Same behavior on iOS and Android.
Logs
[✓] Flutter (Channel master, 1.24.0-8.0.pre.321, on Mac OS X 10.15.7 19H15 darwin-x64, locale en-DE)
• Flutter version 1.24.0-8.0.pre.321 at /Users/visit/Library/Flutter
• Framework revision 05dadb0120 (9 hours ago), 2020-11-20 07:33:05 +0530
• Engine revision a0da844845
• Dart version 2.12.0 (build 2.12.0-50.0.dev)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at /Users/visit/Library/Android/sdk
• Platform android-30, build-tools 30.0.2
• Java binary at: /Users/visit/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/201.6953283/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 12.2)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.2, Build version 12B45b
• CocoaPods version 1.10.0.rc.1
[✓] Android Studio (version 4.1)
• Android Studio at /Users/visit/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/201.6953283/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)
[✓] Connected device (1 available)
• iPhone 12 (mobile) • 8C0363C4-6EC7-44F4-A44B-61A2F776E4A2 • ios • com.apple.CoreSimulator.SimRuntime.iOS-14-2 (simulator)
• No issues found!