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SWM-15th-Dnight / flutter-client

android / ios client source code
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MainCalendar에서 Positioned가 Column 안에 위치하여 발생하는 오류 #47

Closed call-me-bammer closed 3 weeks ago

call-me-bammer commented 3 weeks ago

현재 main_calendar.dart에서의 build 내부 구조입니다.

Image

CustomAppBar 적용 중에 해당 오류가 발생하여 CustomAppBar 최상단에 위치한 Positioned 위젯을 삭제하고 LoginScreen, MainCalendar 둘 다 정상적으로 동작하는 것을 확인했습니다.

Positioned는 Stack 내부에만 존재해야 하는데, 위의 구조처럼 Column 안에 위치하여 발생하는 문제로, 단순히 CustomAppBar의 Positioned 위젯만 삭제했습니다.

======== Exception caught by widgets library =======================================================
The following assertion was thrown while applying parent data.:
Incorrect use of ParentDataWidget.

The ParentDataWidget Positioned(left: 0.0, top: 0.0, right: 0.0) wants to apply ParentData of type StackParentData to a RenderObject, which has been set up to accept ParentData of incompatible type FlexParentData.

Usually, this means that the Positioned widget has the wrong ancestor RenderObjectWidget. Typically, Positioned widgets are placed directly inside Stack widgets.
The offending Positioned is currently placed inside a Column widget.

The ownership chain for the RenderObject that received the incompatible parent data was:
  ConstrainedBox ← Container ← PreferredSize ← _VisibilityScope ← Visibility ← Positioned ← CustomAppBar ← Column ← Stack ← MediaQuery ← ⋯
When the exception was thrown, this was the stack: 
#0      RenderObjectElement._updateParentData.<anonymous closure> (package:flutter/src/widgets/framework.dart:6675:11)
#1      RenderObjectElement._updateParentData (package:flutter/src/widgets/framework.dart:6692:6)
#2      RenderObjectElement.attachRenderObject (package:flutter/src/widgets/framework.dart:6735:7)
#3      RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6597:5)
#4      SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6899:11)
...     Normal element mounting (37 frames)
#41     Element.inflateWidget (package:flutter/src/widgets/framework.dart:4468:16)
#42     MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:7035:36)
#43     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:7047:32)
#44     Element.inflateWidget (package:flutter/src/widgets/framework.dart:4468:16)
#45     MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:7035:36)
#46     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:7047:32)
...     Normal element mounting (40 frames)
#86     Element.inflateWidget (package:flutter/src/widgets/framework.dart:4468:16)
#87     MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:7035:36)
#88     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:7047:32)
...     Normal element mounting (105 frames)
#193    Element.inflateWidget (package:flutter/src/widgets/framework.dart:4468:16)
#194    Element.updateChild (package:flutter/src/widgets/framework.dart:3957:20)
#195    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5642:16)
#196    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5780:11)
#197    Element.rebuild (package:flutter/src/widgets/framework.dart:5333:7)
#198    BuildScope._tryRebuild (package:flutter/src/widgets/framework.dart:2693:15)
#199    BuildScope._flushDirtyElements (package:flutter/src/widgets/framework.dart:2752:11)
#200    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:3048:18)
#201    WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:1162:21)
#202    RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:468:5)
#203    SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1397:15)
#204    SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1318:9)
#205    SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1176:5)
#206    _invoke (dart:ui/hooks.dart:312:13)
#207    PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:419:5)
#208    _drawFrame (dart:ui/hooks.dart:283:31)
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