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flutter_markdown null check operator used on a null value in MarkdownBuilder._buildRichText #146282
Description
Steps to reproduce
Error: Null check operator used on a null value
ErrorDetails:
Stacktrace: #0 MarkdownBuilder._buildRichText.<anonymous closure> (package:flutter_markdown/src/builder.dart:957)
#1 _SelectableTextState._handleSelectionChanged (package:flutter/src/material/selectable_text.dart:578)
#2 EditableTextState._handleSelectionChanged (package:flutter/src/widgets/editable
_text.dart:3695)
#3 EditableTextState._formatAndSetValue (package:flutter/src/widgets/editable_text.dart:3903)
#4 EditableTextState.userUpdateTextEditingValue (package:flutter/src/widgets/editable_text.dart:4271)
#5 RenderEditable._setTextEditingValue (package:flutter/src/rendering/editable.dart:734)
#6 RenderEditable._setSelection (package:flutter/src/rendering/editable.dart:753)
#7 RenderEditable.selectPositionAt (package:flutter/src/rendering/editable.dart:2090)
#8 RenderEditable.selectPosition (package:flutter/src/rendering/editable.dart:2067)
#9 _SelectableTextSelectionGestureDetectorBuilder.onSingleTapUp (package:flutter/src/material/selectable_text.dart:98)
#10 _TextSelectionGestureDetectorState._handleTapUp (package:flutter/src/widgets/text_selection.dart:3282)
#11 BaseTapAndDragGestureRecognizer._checkTapUp.<anonymous closure> (package:flutter/src/gestures/tap_and_drag.dart:1198)
#12 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:315)
#13 BaseTapAndDragGestureRecognizer._checkTapUp (package:flutter/src/gestures/tap_and_drag.dart:1198)
#14 BaseTapAndDragGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap_and_drag.dart:996)
#15 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:167)
#16 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:499)
#17 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:475)
#18 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:430)
#19 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:420)
#20 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:383)
#21 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:330)
#22 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:299)
#23 _invoke1 (dart:ui/hooks.
dart:328)
#24 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:429)
#25 _dispatchPointerDataPacket (dart:ui/hooks.dart:262)Expected results
No error
Actual results
Crash
Code sample
Code sample
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Logs
Logs
[Paste your logs here]Flutter Doctor output
Doctor output
[!] Flutter (Channel stable, 3.19.1, on macOS 14.0 23A344 darwin-x64, locale ro-RO)
• Flutter version 3.19.1 on channel stable at /Users/andreea/development/flutter
! Warning: `dart` on your path resolves to /usr/local/Cellar/dart/3.2.5/libexec/bin/dart, which is not inside
your current Flutter SDK checkout at /Users/andreea/development/flutter. Consider adding
/Users/andreea/development/flutter/bin to the front of your path.
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision abb292a07e (6 weeks ago), 2024-02-20 14:35:05 -0800
• Engine revision 04817c99c9
• Dart version 3.3.0
• DevTools version 2.31.1
• If those were intentional, you can disregard the above warnings; however it is recommended to use "git"
directly to perform update checks and upgrades.
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0-rc1)
• Android SDK at /Users/andreea/Library/Android/sdk
• Platform android-34, build-tools 33.0.0-rc1
• 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 15.3)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 15E204a
• CocoaPods version 1.13.0
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] 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)
[✓] Connected device (3 available)
• Hipp (mobile) • 00008101-001445E12205001E • ios • iOS 17.3.1 21D61
• macOS (desktop) • macos • darwin-x64 • macOS 14.0 23A344 darwin-x64
• Chrome (web) • chrome • web-javascript • Google Chrome 123.0.6312.105
[✓] Network resources
• All expected network resources are available.
Activity
huycozy commentedon Apr 5, 2024
Hi @bogdannedelcu
Which
flutter_markdownversion are you using?Please provide Steps to reproduce and a minimal and complete sample code (but not your production/complex project) so that we can verify the issue. Thanks!
bogdannedelcu commentedon Apr 5, 2024
the screen where i get this error displays a readonly long rich text. It reproduces when you select text and drag around with the finger.
flutter markdown 0.6.19 - i will upgrade and get back to you.
I see line 957 in the source code which could be the source of the error, maybe some things should be checked for null
github-actions commentedon Apr 26, 2024
Without additional information, we are unfortunately not sure how to resolve this issue. We are therefore reluctantly going to close this bug for now.
If you find this problem please file a new issue with the same description, what happens, logs and the output of 'flutter doctor -v'. All system setups can be slightly different so it's always better to open new issues and reference the related ones.
Thanks for your contribution.
github-actions commentedon May 10, 2024
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
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