dev2.0中往回翻页的时候存在一个BUG

[DouSN]

点击阅读书籍后翻到第三章，再往回翻，从第二章第一页往回翻会直接回到第一章的第一页，请问这个问题怎么解决？

[lwlizhe]

额，一个低级错误……因为是开发阶段……有些地方改坏了……

这个原因其实很简单……没把前一章的pageIndex设置为最后一页……

之前把这个值设置为99999999（总之就是一个特别大的值，小说章节页达不到的那种程度），然后计算章节内多少页之后，重新设置一下当前PageIndex ， 方法是 min（设置的pageIndex，当前章节index），后来觉得这段代码好TM不优雅……就删掉了准备重写……然后忘了这块了……不该提交这部分的修改的……

这样造成的后果就是，第三章翻回第二章的时候，会去预加载第一章的内容，然后因为上面的逻辑被删掉了，所以默认pageIndex为0而不是最后一页……表现结果就是你说的那样

[DouSN]

感谢回复，再请教一个问题：将翻页方式从仿真动态切换为覆盖的时候，章节之内的页面翻动是切换成功了，章节之间翻页就会出现错误，请问是什么原因GetBuilder<NovelContentChapterViewModel>( tag: novelId, builder: (_) { return PowerListView.builder( physics: PageScrollPhysics(), controller: _.scrollType == 0 ? PowerListScrollSimulationController() : PowerListPageScrollController(), addRepaintBoundaries: _.scrollType == 0 ? false : true, scrollDirection: Axis.horizontal, layoutManager: _.scrollType == 0 ? PowerListSimulationTurnLayoutManager() : PowerListCoverLayoutManager(), debugTag: 'outerParent', itemBuilder: (BuildContext context, int _index) { return NovelListChapterItem( novelChapterInfo: chapterList[_index], currentChapterIndex: initialPageIndex, ); // return buildTestContentItem(constraints, _index); }, itemCount: chapterList.length, ); })

[lwlizhe]

额，报错信息是什么？现在乍看看不出啥毛病来……

[DouSN]

如果从仿真切换到覆盖就会报错，报错如下：
`══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
The following message was thrown during paint():
Object has been disposed.

The relevant error-causing widget was:
PowerSliverFillViewportRenderObjectWidget
PowerSliverFillViewportRenderObjectWidget:file:///Users/apple/Downloads/flutter_novel-dev_2.0/lib/widget/scroll/power_scroll_view.dart:124:14

When the exception was thrown, this was the stack:
#0 Canvas.restore (dart:ui/painting.dart:4258:41)
#1 SimulationTurnPagePainterHelper.drawBottomCanvasArea
(package:flutter_novel/reader/layout/simulation/helper/power_list_simulation_helper.dart:267:12)
#2 SimulationTurnPagePainterHelper.draw (package:flutter_novel/reader/layout/simulation/helper/power_list_simulation_helper.dart:82:7)
#3 PowerListSimulationTurnLayoutManager.paintAnimationPage
(package:flutter_novel/reader/layout/simulation/power_list_simulation_layout_manager.dart:126:12)
#4 PowerListSimulationTurnLayoutManager.onPaint (package:flutter_novel/reader/layout/simulation/power_list_simulation_layout_manager.dart:41:11)
#5 PowerRenderSliverFillViewport.paint (package:flutter_novel/widget/scroll/sliver/power_sliver_fill.dart:42:19)
#6 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#7 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#8 RenderSliverEdgeInsetsPadding.paint (package:flutter/src/rendering/sliver_padding.dart:274:15)
#9 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#10 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#11 RenderViewportBase._paintContents (package:flutter/src/rendering/viewport.dart:660:17)
#12 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12)
#13 PaintingContext.pushClipRect (package:flutter/src/rendering/object.dart:443:7)
#14 RenderViewportBase.paint (package:flutter/src/rendering/viewport.dart:635:38)
#15 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#16 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#17 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#18 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#19 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#20 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#21 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#22 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#23 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#24 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#25 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#26 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#27 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#28 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#29 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#30 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#31 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#32 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#33 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#34 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#35 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#36 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#37 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#38 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#39 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#40 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#41 RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2847:15)
#42 RenderCustomMultiChildLayoutBox.paint (package:flutter/src/rendering/custom_layout.dart:408:5)
#43 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#44 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#45 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#46 _RenderInkFeatures.paint (package:flutter/src/material/material.dart:555:11)
#47 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#48 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#49 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12)
#50 RenderPhysicalModel.paint (package:flutter/src/rendering/proxy_box.dart:1929:15)
#51 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#52 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#53 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#54 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#55 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#56 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#57 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#58 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#59 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#60 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#61 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#62 RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2847:15)
#63 RenderStack.paintStack (package:flutter/src/rendering/stack.dart:629:5)
#64 RenderStack.paint (package:flutter/src/rendering/stack.dart:645:7)
#65 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#66 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#67 RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2847:15)
#68 RenderCustomMultiChildLayoutBox.paint (package:flutter/src/rendering/custom_layout.dart:408:5)
#69 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#70 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#71 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#72 _RenderInkFeatures.paint (package:flutter/src/material/material.dart:555:11)
#73 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#74 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#75 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12)
#76 RenderPhysicalModel.paint (package:flutter/src/rendering/proxy_box.dart:1929:15)
#77 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#78 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#79 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#80 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12)
#81 PaintingContext.pushOpacity (package:flutter/src/rendering/object.dart:608:5)
#82 RenderAnimatedOpacityMixin.paint (package:flutter/src/rendering/proxy_box.dart:1008:23)
#83 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#84 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13)
#85 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15)
#86 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7)
#87 PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:141:11)
#88 PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:100:5)
#89 PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:995:29)
#90 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:499:19)
#91 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:883:13)
#92 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:363:5)
#93 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1144:15)
#94 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1081:9)
#95 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:995:5)
#99 _invoke (dart:ui/hooks.dart:151:10)
#100 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:308:5)
#101 _drawFrame (dart:ui/hooks.dart:115:31)
(elided 3 frames from dart:async)`
如果是从覆盖切换到翻页就不会报错，但是章节之间的切换方式还是覆盖

[lwlizhe]

如果从仿真切换到覆盖就会报错，报错如下： `══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════ The following message was thrown during paint(): Object has been disposed.

The relevant error-causing widget was: PowerSliverFillViewportRenderObjectWidget PowerSliverFillViewportRenderObjectWidget:file:///Users/apple/Downloads/flutter_novel-dev_2.0/lib/widget/scroll/power_scroll_view.dart:124:14

When the exception was thrown, this was the stack: #0 Canvas.restore (dart:ui/painting.dart:4258:41) #1 SimulationTurnPagePainterHelper.drawBottomCanvasArea (package:flutter_novel/reader/layout/simulation/helper/power_list_simulation_helper.dart:267:12) #2 SimulationTurnPagePainterHelper.draw (package:flutter_novel/reader/layout/simulation/helper/power_list_simulation_helper.dart:82:7) #3 PowerListSimulationTurnLayoutManager.paintAnimationPage (package:flutter_novel/reader/layout/simulation/power_list_simulation_layout_manager.dart:126:12) #4 PowerListSimulationTurnLayoutManager.onPaint (package:flutter_novel/reader/layout/simulation/power_list_simulation_layout_manager.dart:41:11) #5 PowerRenderSliverFillViewport.paint (package:flutter_novel/widget/scroll/sliver/power_sliver_fill.dart:42:19) #6 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #7 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #8 RenderSliverEdgeInsetsPadding.paint (package:flutter/src/rendering/sliver_padding.dart:274:15) #9 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #10 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #11 RenderViewportBase._paintContents (package:flutter/src/rendering/viewport.dart:660:17) #12 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12) #13 PaintingContext.pushClipRect (package:flutter/src/rendering/object.dart:443:7) #14 RenderViewportBase.paint (package:flutter/src/rendering/viewport.dart:635:38) #15 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #16 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #17 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #18 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #19 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #20 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #21 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #22 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #23 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #24 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #25 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #26 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #27 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #28 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #29 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #30 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #31 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #32 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #33 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #34 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #35 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #36 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #37 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #38 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #39 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #40 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #41 RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2847:15) #42 RenderCustomMultiChildLayoutBox.paint (package:flutter/src/rendering/custom_layout.dart:408:5) #43 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #44 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #45 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #46 _RenderInkFeatures.paint (package:flutter/src/material/material.dart:555:11) #47 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #48 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #49 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12) #50 RenderPhysicalModel.paint (package:flutter/src/rendering/proxy_box.dart:1929:15) #51 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #52 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #53 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #54 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #55 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #56 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #57 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #58 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #59 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #60 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #61 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #62 RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2847:15) #63 RenderStack.paintStack (package:flutter/src/rendering/stack.dart:629:5) #64 RenderStack.paint (package:flutter/src/rendering/stack.dart:645:7) #65 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #66 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #67 RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2847:15) #68 RenderCustomMultiChildLayoutBox.paint (package:flutter/src/rendering/custom_layout.dart:408:5) #69 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #70 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #71 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #72 _RenderInkFeatures.paint (package:flutter/src/material/material.dart:555:11) #73 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #74 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #75 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12) #76 RenderPhysicalModel.paint (package:flutter/src/rendering/proxy_box.dart:1929:15) #77 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #78 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #79 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #80 PaintingContext.pushLayer (package:flutter/src/rendering/object.dart:387:12) #81 PaintingContext.pushOpacity (package:flutter/src/rendering/object.dart:608:5) #82 RenderAnimatedOpacityMixin.paint (package:flutter/src/rendering/proxy_box.dart:1008:23) #83 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #84 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:187:13) #85 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:15) #86 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2449:7) #87 PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:141:11) #88 PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart💯5) #89 PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:995:29) #90 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:499:19) #91 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:883:13) #92 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:363:5) #93 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1144:15) #94 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1081:9) #95 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:995:5) #99 _invoke (dart:ui/hooks.dart:151:10) #100 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:308:5) #101 _drawFrame (dart:ui/hooks.dart:115:31) (elided 3 frames from dart:async)` 如果是从覆盖切换到翻页就不会报错，但是章节之间的切换方式还是覆盖

这个报错信息就是典型的repaintBoundary这块的问题……非常恶心，哇，当时差点被搞的心态搞崩……

咳咳回正题，一不留神回忆起了当时的艰苦岁月……结合最后那句，我现在盲猜并没有修改章节ListView外面包的ListView，所以章节切换还是覆盖，现在的结构可以这么说：

外面一个父ListView，里面放了数个子ListView，；子分别代表各个章节，里面在放的就是章节的内容；
总结一下就是 ListVIew（总体，承载章节List） -> ListView（章节内容，承载Page List） -> 一页展示的内容

所以先检查一下是不是外面的父ListView并没有保持跟里面的子ListView一个设置？

[DouSN]

章节外面的controller也切换了

[lwlizhe]

章节外面的controller也切换了

卧槽，这就有点麻烦了，我加上这块的功能试下哈，顺便问下，如果不切换，在代码层面分别写死成覆盖和仿真翻页模式会有问题么

如果通过代码层面写死而非切换的方式没有问题的话，大概率在RepaintBoudary没做更改或者Layer树没有更新，我看下是不是这块的问题

[DouSN]

直接代码切换的话是没有问题

[lwlizhe]

直接代码切换的话是没有问题

那有些想法了，我研究一下，实在不行你先加个Key，内容是类型，看看这样能不能让RepaintBoudary重新读取配置重建一下，后续我修好这个问题我再@你哈

[DouSN]

直接代码切换的话是没有问题

那有些想法了，我研究一下，实在不行你先加个Key，内容是类型，看看这样能不能让RepaintBoudary重新读取配置重建一下，后续我修好这个问题我再@你哈

好的 非常感谢，辛苦啦

[lwlizhe]

直接代码切换的话是没有问题

那有些想法了，我研究一下，实在不行你先加个Key，内容是类型，看看这样能不能让RepaintBoudary重新读取配置重建一下，后续我修好这个问题我再@你哈

好的 非常感谢，辛苦啦

额，研究了下，确实是没build的原因，想了想，好像除了加Key之外也没别的方案，flutter底层就这么规定的……

加个ValueKey禁止其缓存Element，最后强制更新Layer树

[lwlizhe]

直接代码切换的话是没有问题

那有些想法了，我研究一下，实在不行你先加个Key，内容是类型，看看这样能不能让RepaintBoudary重新读取配置重建一下，后续我修好这个问题我再@你哈

好的 非常感谢，辛苦啦

额，研究了下，确实是没build的原因，想了想，好像除了加Key之外也没别的方案，flutter底层就这么规定的……

加个ValueKey禁止其缓存Element，最后强制更新Layer树

又想了想……好像itemBuilder那块加不加key好像影响不大，这个Key应该放到novel_reader_list_item_of_chapter 里面的那个ListView那块？总之加几个ValueKey影响不大，要不几个关键点都加上？

[DouSN]

直接代码切换的话是没有问题

那有些想法了，我研究一下，实在不行你先加个Key，内容是类型，看看这样能不能让RepaintBoudary重新读取配置重建一下，后续我修好这个问题我再@你哈

好的 非常感谢，辛苦啦

额，研究了下，确实是没build的原因，想了想，好像除了加Key之外也没别的方案，flutter底层就这么规定的……
加个ValueKey禁止其缓存Element，最后强制更新Layer树

又想了想……好像itemBuilder那块加不加key好像影响不大，这个Key应该放到novel_reader_list_item_of_chapter 里面的那个ListView那块？总之加几个ValueKey影响不大，要不几个关键点都加上？

非常感谢，只在外面加key就可以了