Hello, after I wrap the View with HotspotProvider, things work as expected. However, if I quit or finish the flow after calling .startFlow(), later it will cause error if I then open and close a dialog. When I open a new dialog, the UI works fine but an exception will throw; When I close that dialog and return to the View using Navigator.pop(context), it will always report errors and the UI will all freeze, which I find no way to resolve.
If it helps, the hotspot is set on a FloatingActionButton under the Scaffold View wrapped by HotspotProvider, which is also the button to open that dialog. Is there a way to solve this problem?
E/flutter ( 8938): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: 'package:flutter/src/widgets/focus_manager.dart': Failed assertion: line 1299 pos 12: '_focusedChildren.isEmpty || _focusedChildren.last.enclosingScope == this': Focused child does not have the same idea of its enclosing scope as the scope does.
E/flutter ( 8938): #0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:51:61)
E/flutter ( 8938): #1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)
E/flutter ( 8938): #2 FocusScopeNode.focusedChild (package:flutter/src/widgets/focus_manager.dart:1299:12)
E/flutter ( 8938): #3 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1384:17)
E/flutter ( 8938): #4 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1400:18)
E/flutter ( 8938): #5 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1400:18)
E/flutter ( 8938): #6 FocusNode.requestFocus (package:flutter/src/widgets/focus_manager.dart:1121:5)
E/flutter ( 8938): #7 Route.didPush.<anonymous closure> (package:flutter/src/widgets/navigator.dart:239:46)
E/flutter ( 8938): #8 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:847:45)
E/flutter ( 8938): #9 Future._propagateToListeners (dart:async/future_impl.dart:876:13)
E/flutter ( 8938): #10 Future._completeWithValue (dart:async/future_impl.dart:652:5)
E/flutter ( 8938): #11 Future._asyncCompleteWithValue.<anonymous closure> (dart:async/future_impl.dart:722:7)
E/flutter ( 8938): #12 _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
E/flutter ( 8938): #13 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
E/flutter ( 8938):
======== Exception caught by gesture ===============================================================
The following assertion was thrown while handling a gesture:
Focused child does not have the same idea of its enclosing scope as the scope does.
'package:flutter/src/widgets/focus_manager.dart':
Failed assertion: line 1299 pos 12: '_focusedChildren.isEmpty || _focusedChildren.last.enclosingScope == this'
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.yml
When the exception was thrown, this was the stack:
#2 FocusScopeNode.focusedChild (package:flutter/src/widgets/focus_manager.dart:1299:12)
#3 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1384:17)
#4 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1400:18)
#5 FocusScopeNode.setFirstFocus (package:flutter/src/widgets/focus_manager.dart:1351:13)
#6 _ModalScopeState._routeSetState (package:flutter/src/widgets/routes.dart:1018:57)
#7 ModalRoute.setState (package:flutter/src/widgets/routes.dart:1177:31)
#8 ModalRoute.changedInternalState (package:flutter/src/widgets/routes.dart:1889:7)
#9 ModalRoute.didPopNext (package:flutter/src/widgets/routes.dart:1881:5)
#10 _RouteEntry.handleDidPopNext (package:flutter/src/widgets/navigator.dart:3032:11)
#11 NavigatorState._flushHistoryUpdates (package:flutter/src/widgets/navigator.dart:4259:19)
#12 NavigatorState.pop (package:flutter/src/widgets/navigator.dart:5291:7)
#13 Navigator.pop (package:flutter/src/widgets/navigator.dart:2570:27)
#14 AddItemMenu.build.<anonymous closure> (package:posnote/views/menu/add_item_menu.dart:225:23)
#15 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:344:24)
#16 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:652:11)
#17 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:309:5)
#18 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:242:7)
#19 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:696:9)
#20 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:98:12)
#21 PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:143:9)
#22 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:633:13)
#23 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:141:18)
#24 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:127:7)
#25 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:495:19)
#26 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:475:22)
#27 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:425:11)
#28 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:420:7)
#29 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:383:5)
#30 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:330:7)
#31 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:299:9)
#32 _invoke1 (dart:ui/hooks.dart:328:13)
#33 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:442:7)
#34 _dispatchPointerDataPacket (dart:ui/hooks.dart:262:31)
(elided 2 frames from class _AssertionError)
Handler: "onTap"
Recognizer: TapGestureRecognizer#de0a1
debugOwner: GestureDetector
state: possible
won arena
finalPosition: Offset(180.0, 751.6)
finalLocalPosition: Offset(180.0, 10.5)
button: 1
sent tap down
====================================================================================================
======== Exception caught by widgets library =======================================================
The following assertion was thrown building ListenableBuilder(listenable: ValueNotifier<bool>#f408e(false), state: _AnimatedState#12782):
Focused child does not have the same idea of its enclosing scope as the scope does.
'package:flutter/src/widgets/focus_manager.dart':
Failed assertion: line 1299 pos 12: '_focusedChildren.isEmpty || _focusedChildren.last.enclosingScope == this'
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.yml
The relevant error-causing widget was:
MaterialApp MaterialApp:file:///C:/my/Project/posnote/lib/main.dart:68:12
When the exception was thrown, this was the stack:
#2 FocusScopeNode.focusedChild (package:flutter/src/widgets/focus_manager.dart:1299:12)
#3 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1384:17)
#4 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1400:18)
#5 FocusScopeNode._doRequestFocus (package:flutter/src/widgets/focus_manager.dart:1400:18)
#6 FocusNode.unfocus (package:flutter/src/widgets/focus_manager.dart:929:15)
#7 FocusNode.canRequestFocus= (package:flutter/src/widgets/focus_manager.dart:531:9)
#8 _ModalScopeState.build.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter/src/widgets/routes.dart:1071:50)
#9 ListenableBuilder.build (package:flutter/src/widgets/transitions.dart:1127:48)
#10 _AnimatedState.build (package:flutter/src/widgets/transitions.dart:135:48)
#11 StatefulElement.build (package:flutter/src/widgets/framework.dart:5599:27)
#12 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5487:15)
#13 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5650:11)
#14 Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#15 StatefulElement.update (package:flutter/src/widgets/framework.dart:5673:5)
#16 Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#17 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6776:14)
#18 Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#19 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#20 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5650:11)
#21 Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#22 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2905:19)
#23 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:1136:21)
#24 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:443:5)
#25 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1392:15)
#26 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1313:9)
#27 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1171:5)
#28 _invoke (dart:ui/hooks.dart:312:13)
#29 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:419:5)
#30 _drawFrame (dart:ui/hooks.dart:283:31)
(elided 2 frames from class _AssertionError)
Hello, after I wrap the View with
HotspotProvider, things work as expected. However, if I quit or finish the flow after calling.startFlow(), later it will cause error if I then open and close a dialog. When I open a new dialog, the UI works fine but an exception will throw; When I close that dialog and return to the View usingNavigator.pop(context), it will always report errors and the UI will all freeze, which I find no way to resolve.If it helps, the hotspot is set on a
FloatingActionButtonunder the Scaffold View wrapped byHotspotProvider, which is also the button to open that dialog. Is there a way to solve this problem?Error message when enter the dialog:
Error message when quit the dialog: