Table widget doesn't work with Hero animations. #31473
Description
Steps to reproduce
Run the following app, and tap on the text.
import 'package:flutter/material.dart';
void main() => runApp(MaterialApp(home: Home()));
class Home extends StatelessWidget {
const Home({
Key key,
}) : super(key: key);
void startHeroTransition(BuildContext context) {
Navigator.of(context).push(MaterialPageRoute(
builder: (BuildContext context) => Center(child: HeroText()),
));
}
@override
Widget build(BuildContext context) {
return SafeArea(
child: GestureDetector(
onTap: () => startHeroTransition(context),
child: Table(
children: [
TableRow(
children: [
HeroText(),
],
),
],
),
),
);
}
}
class HeroText extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Hero(
tag: 'TAG',
child: Material(child: Text('Tap here to reproduce the bug')),
);
}
}Expected behavior
The text should animate via a hero transition to the center of the screen, with no exceptions in the logs.
Actual behavior
I/flutter (23398): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (23398): The following assertion was thrown building Hero(tag: TAG, state: _HeroState#f6027):
I/flutter (23398): 'package:flutter/src/widgets/table.dart': Failed assertion: line 286 pos 12: '() {
I/flutter (23398): if (_debugWillReattachChildren)
I/flutter (23398): return true;
I/flutter (23398): for (Element forgottenChild in _forgottenChildren) {
I/flutter (23398): if (forgottenChild.renderObject == child)
I/flutter (23398): return true;
I/flutter (23398): }
I/flutter (23398): return false;
I/flutter (23398): }()': is not true.
I/flutter (23398):
I/flutter (23398): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (23398): more information in this error message to help you determine and fix the underlying cause.
I/flutter (23398): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (23398): https://github.com/flutter/flutter/issues/new?template=BUG.md
I/flutter (23398):
I/flutter (23398): When the exception was thrown, this was the stack:
I/flutter (23398): #2 _TableElement.removeChildRenderObject (package:flutter/src/widgets/table.dart:286:12)
I/flutter (23398): #3 RenderObjectElement.detachRenderObject (package:flutter/src/widgets/framework.dart:4744:36)
I/flutter (23398): #4 Element.detachRenderObject.<anonymous closure> (package:flutter/src/widgets/framework.dart:2867:13)
I/flutter (23398): #5 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3770:14)
I/flutter (23398): #6 Element.detachRenderObject (package:flutter/src/widgets/framework.dart:2866:5)
I/flutter (23398): #7 Element.detachRenderObject.<anonymous closure> (package:flutter/src/widgets/framework.dart:2867:13)
I/flutter (23398): #8 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3770:14)
I/flutter (23398): #9 Element.detachRenderObject (package:flutter/src/widgets/framework.dart:2866:5)
I/flutter (23398): #10 Element.detachRenderObject.<anonymous closure> (package:flutter/src/widgets/framework.dart:2867:13)
I/flutter (23398): #11 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3770:14)
I/flutter (23398): #12 Element.detachRenderObject (package:flutter/src/widgets/framework.dart:2866:5)
I/flutter (23398): #13 Element.deactivateChild (package:flutter/src/widgets/framework.dart:2996:11)
I/flutter (23398): #14 Element.updateChild (package:flutter/src/widgets/framework.dart:2761:7)
I/flutter (23398): #15 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3750:16)
I/flutter (23398): #16 Element.rebuild (package:flutter/src/widgets/framework.dart:3565:5)
I/flutter (23398): #17 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2278:33)
I/flutter (23398): #18 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:700:20)
I/flutter (23398): #19 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:286:5)
I/flutter (23398): #20 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1012:15)
I/flutter (23398): #21 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:952:9)
I/flutter (23398): #22 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:864:5)
I/flutter (23398): #26 _invoke (dart:ui/hooks.dart:219:10)
I/flutter (23398): #27 _drawFrame (dart:ui/hooks.dart:178:3)
I/flutter (23398): (elided 5 frames from class _AssertionError and package dart:async)
I/flutter (23398): ════════════════════════════════════════════════════════════════════════════════════════════════════