我的Flare软件包存在错误。
我有一个包含3页的标签栏，
第一个标签，我叠加了3个耀斑动画。特殊性：对于每个initState，我都使用sharedpref加载资产名称以显示保存的动画。 第二和第三个标签没什么特别的
当我将选项卡1到2和2到1 x Time滑动时，有时我仅对于此堆栈耀斑动画崩溃，而对于其他动画则没有崩溃。
我在tab1的初始位置加载了先前保存的资产名称：
asset_name_animation = prefs.getString('item' ) ?? "fond_vide";
我显示已加载的资产名称：
new Container (
width:400,
height: 400,
child: new FlareActor("assets/$asset_name_animation.flr",
alignment:Alignment.bottomCenter,
fit:BoxFit.contain,
animation: "Untitled"
)
),
这是错误日志：
E/flutter ( 9171): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: Unable to load asset: assets/null.flr
E/flutter ( 9171): #0 PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:221:7)
E/flutter ( 9171): <asynchronous suspension>
E/flutter ( 9171): #1 FlareCacheAsset.load (package:flare_flutter/flare_cache_asset.dart:31:20)
E/flutter ( 9171): #2 Cache.getAsset (package:flare_flutter/cache.dart:56:15)
E/flutter ( 9171): <asynchronous suspension>
E/flutter ( 9171): #3 cachedActor (package:flare_flutter/flare_cache.dart:35:16)
E/flutter ( 9171): <asynchronous suspension>
E/flutter ( 9171): #4 FlareRenderBox.loadFlare (package:flare_flutter/flare_render_box.dart:322:35)
E/flutter ( 9171): <asynchronous suspension>
E/flutter ( 9171): #5 FlareActorRenderObject.coldLoad (package:flare_flutter/flare_actor.dart:321:20)
E/flutter ( 9171): <asynchronous suspension>
E/flutter ( 9171): #6 FlareRenderBox.load (package:flare_flutter/flare_render_box.dart:272:7)
E/flutter ( 9171): #7 FlareRenderBox.attach (package:flare_flutter/flare_render_box.dart:115:7)
E/flutter ( 9171): #8 AbstractNode.adoptChild (package:flutter/src/foundation/node.dart:132:13)
E/flutter ( 9171): #9 RenderObject.adoptChild (package:flutter/src/rendering/object.dart:1153:11)
E/flutter ( 9171): #10 _RenderProxyBox&RenderBox&RenderObjectWithChildMixin.child= (package:flutter/src/rendering/object.dart:2772:7)
E/flutter ( 9171): #11 SingleChildRenderObjectElement.insertChildRenderObject (package:flutter/src/widgets/framework.dart:5107:18)
E/flutter ( 9171): #12 RenderObjectElement.attachRenderObject (package:flutter/src/widgets/framework.dart:4951:35)
E/flutter ( 9171): #13 RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4717:5)
E/flutter ( 9171): #14 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3084:14)
E/flutter ( 9171): #15 Element.updateChild (package:flutter/src/widgets/framework.dart:2887:12)
E/flutter ( 9171): #16 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5092:14)
E/flutter ( 9171): #17 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3084:14)
E/flutter ( 9171): #18 Element.updateChild (package:flutter/src/widgets/framework.dart:2887:12)
E/flutter ( 9171): #19 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3935:16)
E/flutter ( 9171): #20 Element.rebuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 9171): #21 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3907:5)
E/flutter ( 9171): #22 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3902:5)
E/flutter ( 9171): #23 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3084:14)
E/flutter ( 9171): #24 Element.updateChild (package:flutter/src/widgets/framework.dart:2887:12)
E/flutter ( 9171): #25 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5092:14)
E/flutter ( 9171): #26 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3084:14)
E/flutter ( 9171): #27 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5198:32)
E/flutter ( 9171): #28 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3084:14)
E/flutter ( 9171): #29 Element.updateChild (package:flutter/src/widgets/framework.dart:2887:12)
E/flutter ( 9171): #30 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3935:16)
E/flutter ( 9171): #31 Element.rebuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 9171): #32 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3907:5)
E/flutter ( 9171): #33 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3902:5)
E/flutter ( 9171): #34 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3084:14)
E/flutter ( 9171): #35 Element.updateChild (package:flutter/src/widgets/framework.dart:2887:12)
E/flutter ( 9171): #36 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5092:14)
E/flutter ( 9171): #37 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3084:14)
E/flutter ( 9171): #38 Element.updateChild (package:flutter/src/widgets/framework.dart:2887:12)
E/flutter ( 9171): #39 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3935:16)
E/flutter ( 9171): #40 Element.rebuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 9171): #41 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3907:5)
E/flutter ( 9171): #42 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3902:5)
E/flutter ( 9171): #43 ParentDataElement.mount (package:flutter/src/widgets/framework.dart:4279:11)
E/flutter ( 9171): #44 Element.inflateWidget (pac
我有另一个重复发生的崩溃并有相同的动画问题：每次启动路线时，总是=>后退=>幻灯片选项卡2 =>幻灯片选项卡1，我遇到此错误和动画崩溃。
E/flutter ( 9171): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: Looking up a deactivated widget's ancestor is unsafe.
E/flutter ( 9171): At this point the state of the widget's element tree is no longer stable.
E/flutter ( 9171): To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling inheritFromWidgetOfExactType() in the widget's didChangeDependencies() method.
E/flutter ( 9171): #0 Element._debugCheckStateIsActiveForAncestorLookup.<anonymous closure> (package:flutter/src/widgets/framework.dart:3389:9)
E/flutter ( 9171): #1 Element._debugCheckStateIsActiveForAncestorLookup (package:flutter/src/widgets/framework.dart:3403:6)
E/flutter ( 9171): #2 Element.inheritFromWidgetOfExactType (package:flutter/src/widgets/framework.dart:3418:12)
E/flutter ( 9171): #3 TickerMode.of (package:flutter/src/widgets/ticker_provider.dart:52:39)
E/flutter ( 9171): #4 _analyse2State&State&WidgetsBindingObserver&TickerProviderStateMixin.didChangeDependencies (package:flutter/src/widgets/ticker_provider.dart:197:36)
E/flutter ( 9171): #5 analyse2State.didChangeDependencies (package:ouiquit_app/tableau_de_bord.dart:5533:11)
E/flutter ( 9171): #6 _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:77:64)
E/flutter ( 9171): #7 _rootRunUnary (dart:async/zone.dart:1132:38)
E/flutter ( 9171): #8 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
E/flutter ( 9171): #9 _FutureListener.handleValue (dart:async/future_impl.dart:126:18)
E/flutter ( 9171): #10 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:639:45)
E/flutter ( 9171): #11 Future._propagateToListeners (dart:async/future_impl.dart:668:32)
E/flutter ( 9171): #12 Future._complete (dart:async/future_impl.dart:473:7)
E/flutter ( 9171): #13 _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
E/flutter ( 9171): #14 _AsyncAwaitCompleter.complete.<anonymous closure> (dart:async-patch/async_patch.dart:33:20)
E/flutter ( 9171): #15 _rootRun (dart:async/zone.dart:1120:38)
E/flutter ( 9171): #16 _CustomZone.run (dart:async/zone.dart:1021:19)
E/flutter ( 9171): #17 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
E/flutter ( 9171): #18 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:963:23)
E/flutter ( 9171): #19 _rootRun (dart:async/zone.dart:1124:13)
E/flutter ( 9171): #20 _CustomZone.run (dart:async/zone.dart:1021:19)
E/flutter ( 9171): #21 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
E/flutter ( 9171): #22 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:963:23)
E/flutter ( 9171): #23 _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
E/flutter ( 9171): #24 _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
E/flutter ( 9171):
答案 0 :(得分：0)
即使我遇到此错误，但几秒钟后动画仍然生效
而且完全没有滞后
尝试做flutter clean