Closing bottom sheet and removing FAB cause assertion failure #128562
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
- Display bottom sheet using
showBottomSheetandFloatingActionButtonin stateful scaffold PersistentBottomSheetController.close()andfloatingActionButton: nullat the same time
Expected results
Assertion failure should not happen.
Actual results
════════ Exception caught by animation library ═════════════════════════════════
The following assertion was thrown while notifying status listeners for AnimationController:
'package:flutter/src/material/scaffold.dart': Failed assertion: line 1362 pos 16: 'widget.currentController.status == AnimationStatus.dismissed': is not true.
This assertion is not needed when removing FAV (widget.child == null).
Code sample
Code sample
Remove bottom sheet and FAV at the same time with count == 3.
import 'package:flutter/material.dart';
void main() => runApp(const MaterialApp(home: _CounterScaffold()));
class _CounterScaffold extends StatefulWidget {
const _CounterScaffold();
@override
State<_CounterScaffold> createState() => _CounterScaffoldState();
}
class _CounterScaffoldState extends State<_CounterScaffold> {
int _count = 0;
@override
Widget build(BuildContext context) => Scaffold(
appBar: AppBar(title: const Text('Sample Code')),
body: _CounterBody(count: _count),
floatingActionButton: _count < 3
? FloatingActionButton(
onPressed: () => setState(() => _count++),
tooltip: 'Increment Counter',
child: const Icon(Icons.add),
)
: null,
);
}
class _CounterBody extends StatefulWidget {
final int count;
const _CounterBody({required this.count});
@override
State<_CounterBody> createState() => _CounterBodyState();
}
class _CounterBodyState extends State<_CounterBody> {
PersistentBottomSheetController? _controller;
@override
void didUpdateWidget(_CounterBody oldWidget) {
super.didUpdateWidget(oldWidget);
if (oldWidget.count == 0 && widget.count > 0) {
WidgetsBinding.instance.addPostFrameCallback((_) {
_controller = showBottomSheet(
context: context,
builder: (_) => Container(height: 200, color: Colors.amber),
);
});
}
if (_controller != null && widget.count >= 3) {
WidgetsBinding.instance.addPostFrameCallback((_) {
_controller!.close();
_controller = null;
});
}
}
@override
Widget build(BuildContext context) =>
Center(child: Text('You have pressed the button ${widget.count} times.'));
}Screenshots or Video
No response
Logs
Logs
════════ Exception caught by animation library ═════════════════════════════════
The following assertion was thrown while notifying status listeners for AnimationController:
'package:flutter/src/material/scaffold.dart': Failed assertion: line 1362 pos 16: 'widget.currentController.status == AnimationStatus.dismissed': is not true.
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 _FloatingActionButtonTransitionState._handlePreviousAnimationStatusChanged.<anonymous closure>
#3 State.setState
#4 _FloatingActionButtonTransitionState._handlePreviousAnimationStatusChanged
#5 AnimationLocalStatusListenersMixin.notifyStatusListeners
#6 AnimationController._checkStatusChanged
#7 AnimationController._tick
#8 Ticker._tick
#9 SchedulerBinding._invokeFrameCallback
#10 SchedulerBinding.handleBeginFrame.<anonymous closure>
#11 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:625:13)
#12 SchedulerBinding.handleBeginFrame
#13 SchedulerBinding._handleBeginFrame
#14 _invoke1 (dart:ui/hooks.dart:158:13)
#15 PlatformDispatcher._beginFrame (dart:ui/platform_dispatcher.dart:337:5)
#16 _beginFrame (dart:ui/hooks.dart:101:31)
(elided 2 frames from class _AssertionError)
The AnimationController notifying status listeners was: AnimationController#24868(⏮ 0.000; paused)
════════════════════════════════════════════════════════════════════════════════Flutter Doctor output
Doctor output
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