[Bug report] ScrollController was used after being disposed

[MichalNemec]

Version

6.2.1

Platforms

iOS

Device Model

iPhone 16(iOS 18.0)

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• No issues found!

How to reproduce?

• Accessing screen where extended_nested_scroll_view is used
• clicking on child
• navigating back
• scroll down
• see error

Logs

════════ Exception caught by foundation library ════════════════════════════════
The following assertion was thrown while dispatching notifications for _ExtendedNestedScrollPosition:
A ScrollController was used after being disposed.
Once you have called dispose() on a ScrollController, it can no longer be used.

When the exception was thrown, this was the stack:
#0      ChangeNotifier.debugAssertNotDisposed.<anonymous closure> (package:flutter/src/foundation/change_notifier.dart:182:9)
change_notifier.dart:182
#1      ChangeNotifier.debugAssertNotDisposed (package:flutter/src/foundation/change_notifier.dart:189:6)
change_notifier.dart:189
#2      ChangeNotifier.notifyListeners (package:flutter/src/foundation/change_notifier.dart:414:27)
change_notifier.dart:414
#3      ChangeNotifier.notifyListeners (package:flutter/src/foundation/change_notifier.dart:435:24)
change_notifier.dart:435
#4      ScrollPosition.notifyListeners (package:flutter/src/widgets/scroll_position.dart:1123:11)
scroll_position.dart:1123
#5      ScrollPosition.setPixels (package:flutter/src/widgets/scroll_position.dart:392:9)
scroll_position.dart:392
#6      BallisticScrollActivity.applyMoveTo (package:flutter/src/widgets/scroll_activity.dart:634:21)
scroll_activity.dart:634
#7      _NestedOuterBallisticScrollActivity.applyMoveTo (package:extended_nested_scroll_view/src/extended_nested_scroll_view.dart:1758:31)
extended_nested_scroll_view.dart:1758
#8      BallisticScrollActivity._tick (package:flutter/src/widgets/scroll_activity.dart:620:10)
scroll_activity.dart:620
#9      AnimationLocalListenersMixin.notifyListeners (package:flutter/src/animation/listener_helpers.dart:160:19)
listener_helpers.dart:160
#10     AnimationController._tick (package:flutter/src/animation/animation_controller.dart:957:5)
animation_controller.dart:957
#11     Ticker._tick (package:flutter/src/scheduler/ticker.dart:269:12)
ticker.dart:269
#12     SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1434:15)
binding.dart:1434
#13     SchedulerBinding.handleBeginFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:1265:11)
binding.dart:1265
#14     _LinkedHashMapMixin.forEach (dart:_compact_hash:765:13)
#15     SchedulerBinding.handleBeginFrame (package:flutter/src/scheduler/binding.dart:1263:17)
binding.dart:1263
#16     SchedulerBinding._handleBeginFrame (package:flutter/src/scheduler/binding.dart:1179:5)
binding.dart:1179
#17     _invoke1 (dart:ui/hooks.dart:372:13)
hooks.dart:372
#18     PlatformDispatcher._beginFrame (dart:ui/platform_dispatcher.dart:426:5)
platform_dispatcher.dart:426
#19     _beginFrame (dart:ui/hooks.dart:317:31)
hooks.dart:317

The _ExtendedNestedScrollPosition sending notification was: _ExtendedNestedScrollPosition#49bc4(outer, offset: 101.7, range: 0.0..141.6, viewport: 852.0)
════════════════════════════════════════════════════════════════════════════════

Example code (optional)

ExtendedNestedScrollView(
      floatHeaderSlivers: false,
      controller: CommunityScrollController().scrollController,
      physics: const NeverScrollableScrollPhysics(),
      headerSliverBuilder: (context, innerBoxIsScrolled) => [
        SliverOverlapAbsorber(
          handle: ExtendedNestedScrollView.sliverOverlapAbsorberHandleFor(context),
...

include tabbar
...
TabBarView(
        controller: _tabController,
        physics: const NeverScrollableScrollPhysics(),
        children: pages,
      ),

---
Each child page has this as a frame:

RefreshIndicator.adaptive(
      displacement: _displacement,
      triggerMode: RefreshIndicatorTriggerMode.onEdge,
      onRefresh: () => Future.sync(() {
        return _pagination.refresh();
      }),
      child: CustomScrollView(
        scrollBehavior: ScrollConfiguration.of(context).copyWith(scrollbars: false),
        key: const PageStorageKey('x'),
        restorationId: 'x',
        physics: const AlwaysScrollableScrollPhysics(),
        slivers: [
...

Contact

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