Flutter Spacer() 不能使用 SingleChildScrollView 解决方案
Posted 一叶飘舟
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了Flutter Spacer() 不能使用 SingleChildScrollView 解决方案相关的知识，希望对你有一定的参考价值。
报错的代码片段
body: SingleChildScrollView(
child: Column(
children: [
Spacer(),错误日志输出
Performing hot reload...
Syncing files to device MI 8...
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderFlex children have non-zero flex but incoming height constraints are unbounded.
When a column is in a parent that does not provide a finite height constraint, for example if it is in a vertical scrollable, it will try to shrink-wrap its children along the vertical axis. Setting a flex on a child (e.g. using Expanded) indicates that the child is to expand to fill the remaining space in the vertical direction.
These two directives are mutually exclusive. If a parent is to shrink-wrap its child, the child cannot simultaneously expand to fit its parent.
Consider setting mainAxisSize to MainAxisSize.min and using FlexFit.loose fits for the flexible children (using Flexible rather than Expanded). This will allow the flexible children to size themselves to less than the infinite remaining space they would otherwise be forced to take, and then will cause the RenderFlex to shrink-wrap the children rather than expanding to fit the maximum constraints provided by the parent.
If this message did not help you determine the problem, consider using debugDumpRenderTree():
https://flutter.dev/debugging/#rendering-layer
http://api.flutter.dev/flutter/rendering/debugDumpRenderTree.html
The affected RenderFlex is: RenderFlex#5978c relayoutBoundary=up11 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=Infinity)
size: MISSING
direction: vertical
mainAxisAlignment: start
mainAxisSize: max
crossAxisAlignment: center
verticalDirection: down
... child 1: RenderConstrainedBox#5b56c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
... constraints: MISSING
... size: MISSING
... additionalConstraints: BoxConstraints(w=0.0, h=0.0)
... child 2: RenderRepaintBoundary#efa50 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: RenderCustomPaint#9044d NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... size: MISSING
... child: RenderRepaintBoundary#6ec37 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: _RenderScrollSemantics#97491 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... semantic boundary
... size: MISSING
The creator information is set to: Column ← _SingleChildViewport ← IgnorePointer-[GlobalKey#1d221] ← Semantics ← Listener ← _GestureSemantics ← RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#6ef8c] ← Listener ← _ScrollableScope ← _ScrollSemantics-[GlobalKey#9de4b] ← RepaintBoundary ← CustomPaint ← ⋯
The nearest ancestor providing an unbounded width constraint is: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
See also: https://flutter.dev/layout/
If none of the above helps enough to fix this problem, please don't hesitate to file a bug:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
Column file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:74:18
When the exception was thrown, this was the stack:
#0 RenderFlex.performLayout.<anonymous closure> (package:flutter/src/rendering/flex.dart:926:9)
#1 RenderFlex.performLayout (package:flutter/src/rendering/flex.dart:929:6)
#2 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#3 _RenderSingleChildViewport.performLayout (package:flutter/src/widgets/single_child_scroll_view.dart:581:14)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: RenderFlex#5978c relayoutBoundary=up11 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=Infinity)
... size: MISSING
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... verticalDirection: down
RenderObject: RenderFlex#5978c relayoutBoundary=up11 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=Infinity)
size: MISSING
direction: vertical
mainAxisAlignment: start
mainAxisSize: max
crossAxisAlignment: center
verticalDirection: down
... child 1: RenderConstrainedBox#5b56c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
... constraints: MISSING
... size: MISSING
... additionalConstraints: BoxConstraints(w=0.0, h=0.0)
... child 2: RenderRepaintBoundary#efa50 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: RenderCustomPaint#9044d NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... size: MISSING
... child: RenderRepaintBoundary#6ec37 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: _RenderScrollSemantics#97491 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... semantic boundary
... size: MISSING
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderFlex#5978c relayoutBoundary=up11 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 _RenderSingleChildViewport.performLayout (package:flutter/src/widgets/single_child_scroll_view.dart:582:43)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
RenderObject: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
... child: RenderFlex#5978c relayoutBoundary=up11 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=Infinity)
... size: MISSING
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... verticalDirection: down
... child 1: RenderConstrainedBox#5b56c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
... constraints: MISSING
... size: MISSING
... additionalConstraints: BoxConstraints(w=0.0, h=0.0)
... child 2: RenderRepaintBoundary#efa50 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: RenderCustomPaint#9044d NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... size: MISSING
... child: RenderRepaintBoundary#6ec37 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: RenderIgnorePointer#24446 relayoutBoundary=up9 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... ignoring: false
... ignoringSemantics: false
RenderObject: RenderIgnorePointer#24446 relayoutBoundary=up9 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
ignoring: false
ignoringSemantics: false
... child: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderFlex#5978c relayoutBoundary=up11 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=Infinity)
... size: MISSING
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... verticalDirection: down
... child 1: RenderConstrainedBox#5b56c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
... constraints: MISSING
... size: MISSING
... additionalConstraints: BoxConstraints(w=0.0, h=0.0)
... child 2: RenderRepaintBoundary#efa50 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: RenderCustomPaint#9044d NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none>
... constraints: MISSING
... size: MISSING
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderIgnorePointer#24446 relayoutBoundary=up9 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: RenderSemanticsAnnotations#2a00b relayoutBoundary=up8 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
RenderObject: RenderSemanticsAnnotations#2a00b relayoutBoundary=up8 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
... child: RenderIgnorePointer#24446 relayoutBoundary=up9 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... ignoring: false
... ignoringSemantics: false
... child: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderFlex#5978c relayoutBoundary=up11 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=Infinity)
... size: MISSING
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... verticalDirection: down
... child 1: RenderConstrainedBox#5b56c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
... constraints: MISSING
... size: MISSING
... additionalConstraints: BoxConstraints(w=0.0, h=0.0)
... child 2: RenderRepaintBoundary#efa50 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
... constraints: MISSING
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderSemanticsAnnotations#2a00b relayoutBoundary=up8 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: RenderPointerListener#664a9 relayoutBoundary=up7 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... listeners: down
RenderObject: RenderPointerListener#664a9 relayoutBoundary=up7 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
behavior: opaque
listeners: down
... child: RenderSemanticsAnnotations#2a00b relayoutBoundary=up8 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderIgnorePointer#24446 relayoutBoundary=up9 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... ignoring: false
... ignoringSemantics: false
... child: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderFlex#5978c relayoutBoundary=up11 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=Infinity)
... size: MISSING
... direction: vertical
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... verticalDirection: down
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderPointerListener#664a9 relayoutBoundary=up7 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: RenderSemanticsGestureHandler#161ef relayoutBoundary=up6 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... gestures: <none>
RenderObject: RenderSemanticsGestureHandler#161ef relayoutBoundary=up6 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
behavior: opaque
gestures: <none>
... child: RenderPointerListener#664a9 relayoutBoundary=up7 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... listeners: down
... child: RenderSemanticsAnnotations#2a00b relayoutBoundary=up8 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderIgnorePointer#24446 relayoutBoundary=up9 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... ignoring: false
... ignoringSemantics: false
... child: _RenderSingleChildViewport#d7506 relayoutBoundary=up10 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
====================================================================================================
Reloaded 0 libraries in 507ms.
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderSemanticsGestureHandler#161ef relayoutBoundary=up6 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: RenderPointerListener#3301a relayoutBoundary=up5 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: deferToChild
... listeners: signal
RenderObject: RenderPointerListener#3301a relayoutBoundary=up5 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
behavior: deferToChild
listeners: signal
... child: RenderSemanticsGestureHandler#161ef relayoutBoundary=up6 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... gestures: <none>
... child: RenderPointerListener#664a9 relayoutBoundary=up7 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... listeners: down
... child: RenderSemanticsAnnotations#2a00b relayoutBoundary=up8 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderIgnorePointer#24446 relayoutBoundary=up9 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... ignoring: false
... ignoringSemantics: false
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderPointerListener#3301a relayoutBoundary=up5 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
...
The following RenderObject was being processed when the exception was fired: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... semantic boundary
... size: MISSING
RenderObject: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
semantic boundary
size: MISSING
... child: RenderPointerListener#3301a relayoutBoundary=up5 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: deferToChild
... listeners: signal
... child: RenderSemanticsGestureHandler#161ef relayoutBoundary=up6 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... gestures: <none>
... child: RenderPointerListener#664a9 relayoutBoundary=up7 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... listeners: down
... child: RenderSemanticsAnnotations#2a00b relayoutBoundary=up8 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#6 RenderCustomPaint.performLayout (package:flutter/src/rendering/custom_paint.dart:545:11)
...
The following RenderObject was being processed when the exception was fired: RenderRepaintBoundary#d6132 relayoutBoundary=up3 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
RenderObject: RenderRepaintBoundary#d6132 relayoutBoundary=up3 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
usefulness ratio: no metrics collected yet (never painted)
... child: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... semantic boundary
... size: MISSING
... child: RenderPointerListener#3301a relayoutBoundary=up5 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: deferToChild
... listeners: signal
... child: RenderSemanticsGestureHandler#161ef relayoutBoundary=up6 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... gestures: <none>
... child: RenderPointerListener#664a9 relayoutBoundary=up7 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... listeners: down
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderRepaintBoundary#d6132 relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderCustomPaint.performLayout (package:flutter/src/rendering/custom_paint.dart:545:11)
#5 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#6 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
...
The following RenderObject was being processed when the exception was fired: RenderCustomPaint#39b1a relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
RenderObject: RenderCustomPaint#39b1a relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
size: MISSING
... child: RenderRepaintBoundary#d6132 relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... semantic boundary
... size: MISSING
... child: RenderPointerListener#3301a relayoutBoundary=up5 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: deferToChild
... listeners: signal
... child: RenderSemanticsGestureHandler#161ef relayoutBoundary=up6 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: opaque
... gestures: <none>
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderCustomPaint#39b1a relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
SingleChildScrollView file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:73:15
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:117:21)
#4 RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
#5 MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:171:12)
#6 _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:937:7)
...
The following RenderObject was being processed when the exception was fired: RenderRepaintBoundary#dca03 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); id=_ScaffoldSlot.body (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... layer: OffsetLayer#db9e0 DETACHED
... engine layer: Null#007db
... offset: Offset(0.0, 0.0)
... size: MISSING
... metrics: 0.0% useful (1 bad vs 0 good)
... diagnosis: insufficient data to draw conclusion (less than five repaints)
RenderObject: RenderRepaintBoundary#dca03 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: offset=Offset(0.0, 0.0); id=_ScaffoldSlot.body (can use size)
constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
layer: OffsetLayer#db9e0 DETACHED
engine layer: Null#007db
offset: Offset(0.0, 0.0)
size: MISSING
metrics: 0.0% useful (1 bad vs 0 good)
diagnosis: insufficient data to draw conclusion (less than five repaints)
... child: RenderCustomPaint#39b1a relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderRepaintBoundary#d6132 relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... semantic boundary
... size: MISSING
... child: RenderPointerListener#3301a relayoutBoundary=up5 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... behavior: deferToChild
... listeners: signal
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during performLayout():
RenderBox was not laid out: RenderRepaintBoundary#dca03 relayoutBoundary=up1 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
Scaffold file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:26:12
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:172:18)
#4 _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:937:7)
#5 MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:240:7)
#6 RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:404:14)
...
The following RenderObject was being processed when the exception was fired: RenderCustomMultiChildLayoutBox#68e9f NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(w=392.7, h=770.2)
... size: Size(392.7, 770.2)
RenderObject: RenderCustomMultiChildLayoutBox#68e9f NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(w=392.7, h=770.2)
size: Size(392.7, 770.2)
... child 1: RenderRepaintBoundary#dca03 relayoutBoundary=up1 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); id=_ScaffoldSlot.body (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... layer: OffsetLayer#db9e0 DETACHED
... engine layer: Null#007db
... offset: Offset(0.0, 0.0)
... size: MISSING
... metrics: 0.0% useful (1 bad vs 0 good)
... diagnosis: insufficient data to draw conclusion (less than five repaints)
... child: RenderCustomPaint#39b1a relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderRepaintBoundary#d6132 relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... semantic boundary
... size: MISSING
... child 2: RenderConstrainedBox#c9ef3 relayoutBoundary=up1 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); id=_ScaffoldSlot.appBar (can use size)
... constraints: BoxConstraints(w=392.7, 0.0<=h<=770.2)
... size: Size(392.7, 88.4)
... additionalConstraints: BoxConstraints(0.0<=w<=Infinity, 0.0<=h<=88.4)
... child: RenderSemanticsAnnotations#d7283 relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(w=392.7, 0.0<=h<=88.4)
... semantic boundary
... size: Size(392.7, 88.4)
... child: RenderAnnotatedRegion<SystemUiOverlayStyle>#6514a relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(w=392.7, 0.0<=h<=88.4)
... size: Size(392.7, 88.4)
... child: RenderPhysicalModel#ed65a relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(w=392.7, 0.0<=h<=88.4)
... layer: PhysicalModelLayer#8897e DETACHED
... engine layer: PhysicalShapeEngineLayer#f1ef3
... elevation: 4.0
... color: MaterialColor(primary value: Color(0xfff44336))
... size: Size(392.7, 88.4)
... elevation: 4.0
... color: MaterialColor(primary value: Color(0xfff44336))
... shadowColor: MaterialColor(primary value: Color(0xfff44336))
... shape: BoxShape.rectangle
... borderRadius: BorderRadius.zero
... child 3: RenderPadding#33f7c relayoutBoundary=up1 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 682.2); id=_ScaffoldSlot.bottomNavigationBar (can use size)
... constraints: BoxConstraints(w=392.7, 0.0<=h<=770.2)
... size: Size(392.7, 88.0)
... padding: EdgeInsets.zero
... textDirection: ltr
... child: RenderPadding#cd38a relayoutBoundary=up2 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0) (can use size)
... constraints: BoxConstraints(w=392.7, 0.0<=h<=770.2)
... size: Size(392.7, 88.0)
... padding: EdgeInsets.all(20.0)
... textDirection: ltr
... child: RenderFlex#09cac relayoutBoundary=up3 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(20.0, 20.0) (can use size)
... constraints: BoxConstraints(w=352.7, 0.0<=h<=730.2)
... size: Size(352.7, 48.0)
... direction: horizontal
... mainAxisAlignment: start
... mainAxisSize: max
... crossAxisAlignment: center
... textDirection: ltr
... verticalDirection: down
... child 1: RenderSemanticsAnnotations#b8a9e relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(0.0, 0.0); flex=2; fit=FlexFit.tight (can use size)
... constraints: BoxConstraints(w=137.1, 0.0<=h<=730.2)
... semantic boundary
... size: Size(137.1, 48.0)
... child 2: RenderConstrainedBox#b709c relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: offset=Offset(137.1, 24.0); flex=null; fit=null (can use size)
... constraints: BoxConstraints(0.0<=w<=Infinity, 0.0<=h<=730.2)
... size: Size(10.0, 0.0)
... additionalConstraints: BoxConstraints(w=10.0, 0.0<=h<=Infinity)
... child 3: RenderSemanticsAnnotations#43cee relayoutBoundary=up4 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... needs compositing
... parentData: offset=Offset(147.1, 0.0); flex=3; fit=FlexFit.tight (can use size)
... constraints: BoxConstraints(w=205.6, 0.0<=h<=730.2)
... semantic boundary
... size: Size(205.6, 48.0)
... child 4: RenderStack#27154 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: offset=Offset(376.7, 666.2); id=_ScaffoldSlot.floatingActionButton (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=770.2)
... size: Size(0.0, 0.0)
... alignment: Alignment.centerRight
... textDirection: ltr
... fit: loose
... child 1: RenderTransform#d1e84 relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: not positioned; offset=Offset(0.0, 0.0) (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=770.2)
... size: Size(0.0, 0.0)
... transform matrix: [0] 0.0,0.0,0.0,0.0
[1] 0.0,0.0,0.0,0.0
[2] 0.0,0.0,1.0,0.0
[3] 0.0,0.0,0.0,1.0
... origin: null
... alignment: Alignment.center
... textDirection: ltr
... transformHitTests: true
... child: RenderTransform#20444 relayoutBoundary=up3 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=770.2)
... size: Size(0.0, 0.0)
... transform matrix: [0] 0.7,0.7,0.0,0.0
[1] -0.7,0.7,0.0,0.0
[2] 0.0,0.0,1.0,0.0
[3] 0.0,0.0,0.0,1.0
... origin: null
... alignment: Alignment.center
... textDirection: ltr
... transformHitTests: true
====================================================================================================
======== Exception caught by rendering library =====================================================
The following assertion was thrown during paint():
RenderBox was not laid out: RenderRepaintBoundary#dca03 relayoutBoundary=up1 NEEDS-PAINT
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1930 pos 12: 'hasSize'
Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md
The relevant error-causing widget was:
Scaffold file:///H:/project/flutter/anguo/flutter_plugin_anguo/lib/page/my/passport/destory_account_page.dart:26:12
When the exception was thrown, this was the stack:
#2 RenderBox.size (package:flutter/src/rendering/box.dart:1930:12)
#3 RenderBox.paintBounds (package:flutter/src/rendering/box.dart:2568:41)
#4 PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:138:59)
#5 PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:100:5)
#6 PaintingContext._compositeChild (package:flutter/src/rendering/object.dart:204:7)
...
The following RenderObject was being processed when the exception was fired: RenderCustomMultiChildLayoutBox#68e9f
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(w=392.7, h=770.2)
... size: Size(392.7, 770.2)
RenderObject: RenderCustomMultiChildLayoutBox#68e9f
needs compositing
parentData: <none> (can use size)
constraints: BoxConstraints(w=392.7, h=770.2)
size: Size(392.7, 770.2)
... child 1: RenderRepaintBoundary#dca03 relayoutBoundary=up1 NEEDS-PAINT
... needs compositing
... parentData: offset=Offset(0.0, 0.0); id=_ScaffoldSlot.body (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... layer: OffsetLayer#db9e0 DETACHED
... engine layer: Null#007db
... offset: Offset(0.0, 0.0)
... size: MISSING
... metrics: 0.0% useful (2 bad vs 0 good)
... diagnosis: insufficient data to draw conclusion (less than five repaints)
... child: RenderCustomPaint#39b1a relayoutBoundary=up2 NEEDS-PAINT
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... child: RenderRepaintBoundary#d6132 relayoutBoundary=up3 NEEDS-PAINT
... needs compositing
... parentData: <none> (can use size)
... constraints: BoxConstraints(0.0<=w<=392.7, 0.0<=h<=593.8)
... size: MISSING
... usefulness ratio: no metrics collected yet (never painted)
... child: _RenderScrollSemantics#d6905 relayoutBoundary=up4 NEEDS-PAINT
... nee以上是关于Flutter Spacer() 不能使用 SingleChildScrollView 解决方案的主要内容，如果未能解决你的问题，请参考以下文章