Closed
Description
Is there an existing issue for this?
- I have searched the existing issues
- I have read the guide to filing a bug
Steps to reproduce
Android specific
- Create a scrollable widget (tested with ListView, SingleChildScrollView+Column and PageView)
- Put some platform views in there (tested with both initAndroidView and initExpensiveAndroidView)
- Scroll slowly
Additional details: IgnorePointer() changes nothing. Also tried with an empty gestureRecognizers and hitTestBehaviorPlatformViewHitTestBehavior.transparent.
Expected results
- Normal, smooth scrolling
Actual results
Scroll position is jumping up and down and gets exponentially worse. See video
Code sample
Code sample
See https://github.com/andreasgangso/flutter-platformview-scroll-glitch-bug
Snippet:
class MyHomePage extends StatelessWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
Widget build(BuildContext context) {
return Stack(children: [
Scaffold(
appBar: AppBar(
title: Text(title),
),
body: SingleChildScrollView(
child: Column(
children: <Widget>[
...List.generate(
10,
(index) => Container(
margin: const EdgeInsets.only(bottom: 10),
width: double.infinity,
height: 500,
child: PlatformViewLink(
viewType: 'NativeView',
surfaceFactory: (context, controller) {
return AndroidViewSurface(
controller: controller as AndroidViewController,
hitTestBehavior: PlatformViewHitTestBehavior.opaque,
gestureRecognizers: const <Factory<
OneSequenceGestureRecognizer>>{},
);
},
onCreatePlatformView: (params) {
var controller = PlatformViewsService.initAndroidView(
id: params.id,
viewType: 'NativeView',
layoutDirection: TextDirection.ltr,
onFocus: () {
params.onFocusChanged(true);
},
);
controller
..addOnPlatformViewCreatedListener((val) {
params.onPlatformViewCreated(val);
})
..create();
return controller;
},
),
),
)
],
),
),
),
]);
}
}Screenshots or Video
Screenshots / Video demonstration
Untitled.mov
Logs
Logs
I/PlatformViewsController(14373): Using hybrid composition for platform view: 0
I/PlatformViewsController(14373): Using hybrid composition for platform view: 1
I/PlatformViewsController(14373): Using hybrid composition for platform view: 2
I/PlatformViewsController(14373): Using hybrid composition for platform view: 3
I/PlatformViewsController(14373): Using hybrid composition for platform view: 4
I/PlatformViewsController(14373): Using hybrid composition for platform view: 5
I/PlatformViewsController(14373): Using hybrid composition for platform view: 6
I/PlatformViewsController(14373): Using hybrid composition for platform view: 7
I/PlatformViewsController(14373): Using hybrid composition for platform view: 8
I/PlatformViewsController(14373): Using hybrid composition for platform view: 9
I/com.example.bu(14373): NativeAlloc concurrent copying GC freed 1454(76KB) AllocSpace objects, 0(0B) LOS objects, 49% free, 1639KB/3279KB, paused 6.550ms total 61.415ms
Reloaded 1 of 700 libraries in 847ms (compile: 11 ms, reload: 354 ms, reassemble: 403 ms).
I/PlatformViewsController(14373): Using hybrid composition for platform view: 10
I/PlatformViewsController(14373): Using hybrid composition for platform view: 11
I/PlatformViewsController(14373): Using hybrid composition for platform view: 12
I/PlatformViewsController(14373): Using hybrid composition for platform view: 13
I/PlatformViewsController(14373): Using hybrid composition for platform view: 14
I/PlatformViewsController(14373): Using hybrid composition for platform view: 15
I/PlatformViewsController(14373): Using hybrid composition for platform view: 16
I/PlatformViewsController(14373): Using hybrid composition for platform view: 17
I/PlatformViewsController(14373): Using hybrid composition for platform view: 18
I/PlatformViewsController(14373): Using hybrid composition for platform view: 19Flutter Doctor output
Doctor output
Tested on master (3.18.0-7.0.pre.14)
Also tested on: 3.17.0-15.0.pre
Devices tested:
Mi A2 (Android 10 API 29)
SM A515F (mobile) Android 12 (API 31)
[✓] Flutter (Channel master, 3.18.0-7.0.pre.14, on macOS 13.6 22G120 darwin-arm64, locale en-NO)
• Flutter version 3.18.0-7.0.pre.14 on channel master at /Users/andreasgangso/dev/tools/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision c22c19b6e2 (14 hours ago), 2023-12-06 15:13:17 -0800
• Engine revision 347f506a34
• Dart version 3.3.0 (build 3.3.0-198.0.dev)
• DevTools version 2.30.0
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /Users/andreasgangso/Library/Android/sdk
• Platform android-34, build-tools 33.0.0
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 15.0.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 15A507
• CocoaPods version 1.12.1
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2022.2)
• 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 17.0.6+0-17.0.6b802.4-9586694)
[✓] VS Code (version 1.84.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.76.0
[✓] VS Code (version 1.85.0-insider)
• VS Code at /Applications/Visual Studio Code - Insiders.app/Contents
• Flutter extension version 3.77.20231101
[✓] Connected device (4 available)
• Mi A2 (mobile) • 4686c9c • android-arm64 • Android 10 (API 29)
[✓] Network resources
• All expected network resources are available.
• No issues found!