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hasSize assertion fail in SelectableRegion within a background page #119776
Description
Activity
Reproducible using the code sample provided above.
As reported above, the bug does not reproduce when you remove/comment out the foreground widget and its enclosing MaterialPage.
Labeling for further investigation.
updated sample
import 'package:flutter/material.dart'; void main() { runApp(const MyApp()); } class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { return const MaterialApp( home: BackgroundSelectableRegionPage(), ); } } final _focusNode = FocusNode(); class BackgroundSelectableRegionPage extends StatelessWidget { const BackgroundSelectableRegionPage({super.key}); @override Widget build(BuildContext context) { return Navigator( pages: [ MaterialPage( child: SelectableRegion( focusNode: _focusNode, selectionControls: materialTextSelectionControls, child: const Scaffold(body: Text('background')), ), ), // const MaterialPage( // child: Scaffold(body: Text('foreground')), // ), // uncomment this and hot restart to reproduce the error ], onPopPage: (_, __) => false, ); } }
logs
Launching lib/main.dart on iPhone 14 Pro Max in debug mode... Xcode build done. 17.1s Connecting to VM Service at ws://127.0.0.1:58519/u-CI_kw-lvQ=/ws ════════ Exception caught by foundation library ════════════════════════════════ The following assertion was thrown while dispatching notifications for _SelectableRegionContainerDelegate: RenderBox was not laid out: RenderPhysicalModel#d4ff8 NEEDS-LAYOUT NEEDS-PAINT 'package:flutter/src/rendering/box.dart': Failed assertion: line 1966 pos 12: 'hasSize' Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause. In either case, please report this assertion by filing a bug on GitHub: https://github.com/flutter/flutter/issues/new?template=2_bug.md When the exception was thrown, this was the stack #2 RenderBox.size #3 SelectionContainerDelegate.containerSize #4 MultiSelectableSelectionContainerDelegate._updateHandleLayersAndOwners #5 MultiSelectableSelectionContainerDelegate.pushHandleLayers #6 _SelectionContainerState.pushHandleLayers #7 SelectableRegionState.add #8 SelectionRegistrant._updateSelectionRegistrarSubscription #9 ChangeNotifier.notifyListeners #10 MultiSelectableSelectionContainerDelegate._updateSelectionGeometry #11 MultiSelectableSelectionContainerDelegate.didChangeSelectables #12 _SelectableRegionContainerDelegate.didChangeSelectables #13 MultiSelectableSelectionContainerDelegate._updateSelectables #14 MultiSelectableSelectionContainerDelegate._scheduleSelectableUpdate.<anonymous closure> #15 SchedulerBinding._invokeFrameCallback #16 SchedulerBinding.handleDrawFrame #17 SchedulerBinding.scheduleWarmUpFrame.<anonymous closure> #21 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:192:26) (elided 5 frames from class _AssertionError, class _Timer, and dart:async-patch) The _SelectableRegionContainerDelegate sending notification was: Instance of '_SelectableRegionContainerDelegate' ════════════════════════════════════════════════════════════════════════════════ ════════ Exception caught by scheduler library ═════════════════════════════════ RenderBox was not laid out: RenderPhysicalModel#d4ff8 NEEDS-LAYOUT NEEDS-PAINT 'package:flutter/src/rendering/box.dart': Failed assertion: line 1966 pos 12: 'hasSize' ════════════════════════════════════════════════════════════════════════════════ Application finished. Exitedflutter doctor -v
[✓] Flutter (Channel stable, 3.7.1, on macOS 13.1 22C65 darwin-arm64, locale en-GB) • Flutter version 3.7.1 on channel stable at /Users/nexus/dev/sdks/flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision 7048ed95a5 (15 hours ago), 2023-02-01 09:07:31 -0800 • Engine revision 800594f1f4 • Dart version 2.19.1 • DevTools version 2.20.1 [✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0) • Android SDK at /Users/nexus/Library/Android/sdk • Platform android-33, build-tools 33.0.0 • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301) • All Android licenses accepted. [✓] Xcode - develop for iOS and macOS (Xcode 14.2) • Xcode at /Applications/Xcode.app/Contents/Developer • Build 14C18 • CocoaPods version 1.11.3 [✓] Chrome - develop for the web • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome [!] Android Studio (version 2022.1) • 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 ✗ Unable to find bundled Java version. • Try updating or re-installing Android Studio. [!] Android Studio (version 2022.1) • Android Studio at /Users/nexus/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/221.6008.13.2211.9477386/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 ✗ Unable to find bundled Java version. • Try updating or re-installing Android Studio. [✓] IntelliJ IDEA Community Edition (version 2022.3.2) • 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 1.74.3) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension version 3.58.0 [✓] Connected device (5 available) • Pixel 7 (mobile) • adb-28291FDH2001SA-5Lv71w._adb-tls-connect._tcp. • android-arm64 • Android 13 (API 33) • M2007J20CG (mobile) • adb-5dd3be00-17AYzd._adb-tls-connect._tcp. • android-arm64 • Android 12 (API 31) • iPhone 14 Pro Max (mobile) • 70C93773-FBEC-4F48-B648-EE61E0D00BFB • ios • com.apple.CoreSimulator.SimRuntime.iOS-16-2 (simulator) • macOS (desktop) • macos • darwin-arm64 • macOS 13.1 22C65 darwin-arm64 • Chrome (web) • chrome • web-javascript • Google Chrome 109.0.5414.119 [✓] HTTP Host Availability • All required HTTP hosts are available ! Doctor found issues in 2 categories.[!] Flutter (Channel master, 3.8.0-1.0.pre.32, on macOS 13.1 22C65 darwin-arm64, locale en-GB) • Flutter version 3.8.0-1.0.pre.32 on channel master at /Users/nexus/dev/sdks/flutters ! Warning: `flutter` on your path resolves to /Users/nexus/dev/sdks/flutter/bin/flutter, which is not inside your current Flutter SDK checkout at /Users/nexus/dev/sdks/flutters. Consider adding /Users/nexus/dev/sdks/flutters/bin to the front of your path. ! Warning: `dart` on your path resolves to /Users/nexus/dev/sdks/flutter/bin/dart, which is not inside your current Flutter SDK checkout at /Users/nexus/dev/sdks/flutters. Consider adding /Users/nexus/dev/sdks/flutters/bin to the front of your path. • Upstream repository https://github.com/flutter/flutter.git • Framework revision f9daa9aac4 (5 hours ago), 2023-02-01 22:59:24 -0500 • Engine revision 679c4b42e2 • Dart version 3.0.0 (build 3.0.0-192.0.dev) • DevTools version 2.21.1 • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades. [✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0) • Android SDK at /Users/nexus/Library/Android/sdk • Platform android-33, build-tools 33.0.0 • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301) • All Android licenses accepted. [✓] Xcode - develop for iOS and macOS (Xcode 14.2) • Xcode at /Applications/Xcode.app/Contents/Developer • Build 14C18 • CocoaPods version 1.11.3 [✓] Chrome - develop for the web • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome [!] Android Studio (version 2022.1) • 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 ✗ Unable to find bundled Java version. • Try updating or re-installing Android Studio. [!] Android Studio (version 2022.1) • Android Studio at /Users/nexus/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/221.6008.13.2211.9477386/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 ✗ Unable to find bundled Java version. • Try updating or re-installing Android Studio. [✓] IntelliJ IDEA Community Edition (version 2022.3.2) • 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 1.74.3) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension version 3.58.0 [✓] Connected device (5 available) • Pixel 7 (mobile) • adb-28291FDH2001SA-5Lv71w._adb-tls-connect._tcp. • android-arm64 • Android 13 (API 33) • M2007J20CG (mobile) • adb-5dd3be00-17AYzd._adb-tls-connect._tcp. • android-arm64 • Android 12 (API 31) • iPhone 14 Pro Max (mobile) • 70C93773-FBEC-4F48-B648-EE61E0D00BFB • ios • com.apple.CoreSimulator.SimRuntime.iOS-16-2 (simulator) • macOS (desktop) • macos • darwin-arm64 • macOS 13.1 22C65 darwin-arm64 • Chrome (web) • chrome • web-javascript • Google Chrome 109.0.5414.119 [✓] HTTP Host Availability • All required HTTP hosts are available ! Doctor found issues in 3 categories.- added and removed
on Feb 2, 2023 This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
flutter doctor -vand a minimal reproduction of the issue.- locked as resolved and limited conversation to collaborators
on Mar 3, 2023
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Stack traces logged to the consoleNavigator, Router, and related APIs.SelectableRegion, SelectionArea, SelectionContainer, Selectable, and related APIsFound to occur in 3.7Found to occur in 3.8flutter/packages/flutter repository. See also f: labels.The issue has been confirmed reproducible and is ready to work onIssue is closed as already fixed in a newer version
Steps to Reproduce
main.dartwith the following.Expected results: "foreground" text is visible, no exceptions
Actual results: "foreground" text is visible, two exceptions in console:
The exception is only thrown if the page with
SelectableRegionis in the background. If the foreground page is deleted, everything works fine.main.dart
flutter doctor -v