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_DropdownMenuState#f9cfe(tickers: tracking 1 ticker) was disposed with an active Ticker #15

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ryanhz opened this issue Aug 14, 2019 · 1 comment · May be fixed by #16
Open

_DropdownMenuState#f9cfe(tickers: tracking 1 ticker) was disposed with an active Ticker #15

ryanhz opened this issue Aug 14, 2019 · 1 comment · May be fixed by #16

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@ryanhz
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ryanhz commented Aug 14, 2019 •
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flutter: ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞════════════════════════
The following assertion was thrown while finalizing the widget
tree:
_DropdownMenuStatef9cfe(tickers: tracking 1 ticker) was disposed
with an active Ticker.
_DropdownMenuState created a Ticker via its
TickerProviderStateMixin, but at the time dispose() was called on
the mixin, that Ticker was still active. All Tickers must be
disposed before calling super.dispose(). Tickers used by
AnimationControllers should be disposed by calling dispose() on
the AnimationController itself. Otherwise, the ticker will leak.
The offending ticker was: _WidgetTicker(created by
_DropdownMenuStatef9cfe(lifecycle state: created, tickers:
tracking 3 tickers))
The stack trace when the _WidgetTicker was actually created was:
0 new Ticker.
(package:flutter/src/scheduler/ticker.dart:64:40)
1 new Ticker
(package:flutter/src/scheduler/ticker.dart:66:6)
2 new _WidgetTicker
(package:flutter/src/widgets/ticker_provider.dart:225:80)
3
__DropdownMenuState&DropdownState&TickerProviderStateMixin.createTicker
(package:flutter/src/widgets/ticker_provider.dart:161:34)
4 new AnimationController
(package:flutter/src/animation/animation_controller.dart:245:21)
5 _DropdownMenuState.initState
(package:dropdown_menu/_src/dropdown_menu.dart:132:27)
6 StatefulElement._firstBuild
(package:flutter/src/widgets/framework.dart:4033:58)
7 ComponentElement.mount
(package:flutter/src/widgets/framework.dart:3902:5)
8 Element.inflateWidget
(package:flutter/src/widgets/framework.dart:3084:14)
9 Element.updateChild
(package:flutter/src/widgets/framework.dart:2887:12)
10 RenderObjectElement.updateChildren
(package:flutter/src/widgets/framework.dart:4875:32)
11 MultiChildRenderObjectElement.update
(package:flutter/src/widgets/framework.dart:5208:17)
12 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
13 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
14 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
15 ProxyElement.update
(package:flutter/src/widgets/framework.dart:4219:5)
16 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
17 RenderObjectElement.updateChildren
(package:flutter/src/widgets/framework.dart:4817:32)
18 MultiChildRenderObjectElement.update
(package:flutter/src/widgets/framework.dart:5208:17)
19 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
20 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
21 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
22 ProxyElement.update
(package:flutter/src/widgets/framework.dart:4219:5)
23 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
24 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
25 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
26 StatefulElement.update
(package:flutter/src/widgets/framework.dart:4085:5)
27 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
28 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
29 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
30 ProxyElement.update
(package:flutter/src/widgets/framework.dart:4219:5)
31 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
32 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
33 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
34 ProxyElement.update
(package:flutter/src/widgets/framework.dart:4219:5)
35 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
36 RenderObjectElement.updateChildren
(package:flutter/src/widgets/framework.dart:4817:32)
37 MultiChildRenderObjectElement.update
(package:flutter/src/widgets/framework.dart:5208:17)
38 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
39 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
40 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
41 StatefulElement.update
(package:flutter/src/widgets/framework.dart:4085:5)
42 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
43 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
44 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
45 ProxyElement.update
(package:flutter/src/widgets/framework.dart:4219:5)
46 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
47 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
48 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
49 StatefulElement.update
(package:flutter/src/widgets/framework.dart:4085:5)
50 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
51 SingleChildRenderObjectElement.update
(package:flutter/src/widgets/framework.dart:5099:14)
52 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
53 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
54 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
55 StatelessElement.update
(package:flutter/src/widgets/framework.dart:3981:5)
56 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
57 SingleChildRenderObjectElement.update
(package:flutter/src/widgets/framework.dart:5099:14)
58 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
59 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
60 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
61 StatefulElement.update
(package:flutter/src/widgets/framework.dart:4085:5)
62 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
63 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
64 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
65 StatefulElement.update
(package:flutter/src/widgets/framework.dart:4085:5)
66 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
67 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
68 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
69 ProxyElement.update
(package:flutter/src/widgets/framework.dart:4219:5)
70 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
71 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
72 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
73 ProxyElement.update
(package:flutter/src/widgets/framework.dart:4219:5)
74 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
75 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
76 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
77 StatefulElement.update
(package:flutter/src/widgets/framework.dart:4085:5)
78 Element.updateChild
(package:flutter/src/widgets/framework.dart:2876:15)
79 ComponentElement.performRebuild
(package:flutter/src/widgets/framework.dart:3935:16)
80 Element.rebuild
(package:flutter/src/widgets/framework.dart:3721:5)
81 BuildOwner.buildScope
(package:flutter/src/widgets/framework.dart:2340:33)
82
_WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame
(package:flutter/src/widgets/binding.dart:700:20)
83
_WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback
(package:flutter/src/rendering/binding.dart:285:5)
84
_WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback
(package:flutter/src/scheduler/binding.dart:1016:15)
85
_WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame
(package:flutter/src/scheduler/binding.dart:958:9)
86
_WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame
(package:flutter/src/scheduler/binding.dart:874:5)
90 _invoke (dart:ui/hooks.dart:236:10)
91 _drawFrame (dart:ui/hooks.dart:194:3)
(elided 3 frames from package dart:async)

When the exception was thrown, this was the stack:
0 __DropdownMenuState&DropdownState&TickerProviderStateMixin.dispose. (package:flutter/src/widgets/ticker_provider.dart:178:13)
1 __DropdownMenuState&DropdownState&TickerProviderStateMixin.dispose (package:flutter/src/widgets/ticker_provider.dart:191:6)
2 _DropdownMenuState.dispose (package:dropdown_menu/_src/dropdown_menu.dart:147:11)
3 StatefulElement.unmount (package:flutter/src/widgets/framework.dart:4107:12)
4 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1737:13)
5 ListIterable.forEach (dart:_internal/iterable.dart:39:13)
6 _InactiveElements._unmountAll (package:flutter/src/widgets/framework.dart:1746:25)
7 BuildOwner.finalizeTree. (package:flutter/src/widgets/framework.dart:2426:27)
8 BuildOwner.lockState (package:flutter/src/widgets/framework.dart:2258:15)
9 BuildOwner.finalizeTree (package:flutter/src/widgets/framework.dart:2425:7)
10 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:702:18)
11 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:285:5)
12 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1016:15)
13 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:958:9)
14 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:874:5)
18 _invoke (dart:ui/hooks.dart:236:10)
19 _drawFrame (dart:ui/hooks.dart:194:3)
(elided 3 frames from package dart:async)
This was referenced Aug 14, 2019
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@basharalbashier
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has anyone got a way out?

even trying _controller.dispose(); everywhere never work!

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Fixed ticker leak: DropdownMenuState was disposed with an active Ticker ryanhz/flutter_dropdown_menu
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@ryanhz @basharalbashier