8000 type 'Null' is not a subtype of type 'LoadStatus' · Issue #626 · peng8350/flutter_pulltorefresh · GitHub
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xiaochenghua opened this issue Mar 24, 2023 · 0 comments
Open

type 'Null' is not a subtype of type 'LoadStatus' #626

xiaochenghua opened this issue Mar 24, 2023 · 0 comments

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@xiaochenghua
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xiaochenghua commented Mar 24, 2023 •
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══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞════════════════════════
The following _TypeError was thrown building LayoutBuilder:
type 'Null' is not a subtype of type 'LoadStatus'

When the exception was thrown, this was the stack:
#0 LoadIndicatorState.build. (package:pull_to_refresh/src/internals/indicator_wrap.dart:563:44)
#1 _LayoutBuilderElement._layout.layoutCallback (package:flutter/src/widgets/layout_builder.dart:119:77)
#2 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2637:19)
#3 _LayoutBuilderElement._layout (package:flutter/src/widgets/layout_builder.dart:153:12)
#4 RenderObject.invokeLayoutCallback. (package:flutter/src/rendering/object.dart:2246:59)
#5 PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:1035:15)
#6 RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:2246:14)
#7 RenderConstrainedLayoutBuilder.rebuildIfNecessary (package:flutter/src/widgets/layout_builder.dart:228:7)
#8 _RenderLayoutBuilder.performLayout (package:flutter/src/widgets/layout_builder.dart:316:5)
#9 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#10 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#11 RenderSliverLoading.performLayout (package:pull_to_refresh/src/internals/slivers.dart:463:14)
#12 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#13 RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:516:13)
#14 RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1600:12)
#15 RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1507:20)
#16 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#17 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#18 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:120:14)
#19 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#20 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#21 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:120:14)
#22 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#23 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#24 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:120:14)
#25 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#26 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#27 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:120:14)
#28 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#29 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#30 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:120:14)
#31 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#32 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#33 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:120:14)
#34 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#35 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#36 _RenderLayoutBuilder.performLayout (package:flutter/src/widgets/layout_builder.dart:318:14)
#37 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#38 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#39 ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:56:11)
#40 RenderStack._computeSize (package:flutter/src/rendering/stack.dart:595:43)
#41 RenderStack.performLayout (package:flutter/src/rendering/stack.dart:622:12)
#42 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#43 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#44 ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:56:11)
#45 RenderStack._computeSize (package:flutter/src/rendering/stack.dart:595:43)
#46 RenderStack.performLayout (package:flutter/src/rendering/stack.dart:622:12)
#47 RenderObject.layout (package:flutter/src/rendering/object.dart:2135:7)
#48 RenderBox.layout (package:flutter/src/rendering/box.dart:2418:11)
#49 MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:171:12)
#50 _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:1110:7)
#51 MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:240:7)
#52 RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:410:14)
#53 RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1973:7)
#54 PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:999:18)
#55 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:513:19)
#56 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:884:13)
#57 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:378:5)
#58 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1175:15)
#59 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1104:9)
#60 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1015:5)
#64 _invoke (dart:ui/hooks.dart:150:10)
#65 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:318:5)
#66 _drawFrame (dart:ui/hooks.dart:115:31)
(elided 3 frames from dart:async)

═════════════════════════════════════════════════════════════════

➜ ~ flutter doctor -v
[✓] Flutter (Channel stable, 3.3.5, on macOS 13.1 22C65 darwin-x64, locale zh-Hans-CN)
• Flutter version 3.3.5 on channel stable at /Users/chenghua/fvm/versions/3.3.5
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision d9111f6402 (5 months ago), 2022-10-19 12:27:13 -0700
• Engine revision 3ad69d7be3
• Dart version 2.18.2
• DevTools version 2.15.0

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
• Android SDK at /Users/chenghua/Library/Android/sdk
• Platform android-31, build-tools 31.0.0
• ANDROID_HOME = /Users/chenghua/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7590822)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 14B47b
• CocoaPods version 1.11.3

[✓] Android Studio (version 2021.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7590822)

[✓] VS Code (version 1.76.0)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.60.0

[✓] Connected device (1 available)
com.apple.CoreSimulator.SimRuntime.iOS-16-1 (simulator)
! Error: To use iPhone for development, enable Developer Mode in Settings → Privacy & Security. (code 6)

[✓] HTTP Host Availability
• All required HTTP hosts are available

• No issues found!
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