PointerEventConverter.expand: The getter 'pointer' was called on null. #39031

cvolzke4 · 2019-08-22T07:06:24Z

From crash:

NoSuchMethodError: The getter 'pointer' was called on null.
#0      PointerEventConverter.expand (package:flutter/src/gestures/converter.dart:254)
#1      _SyncIterator.moveNext (dart:core-patch/core_patch.dart:144)
#2      ListQueue.addAll (dart:collection/queue.dart:655)
#3      _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:84)
#4      _rootRunUnary (dart:async/zone.dart:1136)
#5      _CustomZone.runUnary (dart:async/zone.dart:1029)
#6      _CustomZone.runUnaryGuarded (dart:async/zone.dart:931)
#7      _invoke1 (dart:ui/hooks.dart:252)
#8      _dispatchPointerDataPacket (dart:ui/hooks.dart:161)

The text was updated successfully, but these errors were encountered:

BondarenkoStas · 2019-09-04T12:27:25Z

@cvolzke4 Please provide flutter doctor -v output as well as the steps to reproduce the issue.

keshava19 · 2019-09-09T19:04:50Z

NoSuchMethodError: NoSuchMethodError: The getter 'pointer' was called on null.
Receiver: null
Tried calling: pointer
  File "converter.dart", line 254, in PointerEventConverter.expand
  File "core_patch.dart", line 152, in _SyncIterator.moveNext
  File "queue.dart", line 655, in ListQueue.addAll
  File "binding.dart", line 84, in _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket
  File "zone.dart", line 1136, in _rootRunUnary
  File "zone.dart", line 1029, in _CustomZone.runUnary
  File "zone.dart", line 931, in _CustomZone.runUnaryGuarded
  File "hooks.dart", line 250, in _invoke1
  File "hooks.dart", line 159, in _dispatchPointerDataPacket

Flutter doctor :-

keshava@debian:~$ flutter doctor -v
[✓] Flutter (Channel stable, v1.7.8+hotfix.4, on Linux, locale en_IN.UTF-8)
    • Flutter version 1.7.8+hotfix.4 at /home/keshava/Development/flutter
    • Framework revision 20e59316b8 (8 weeks ago), 2019-07-18 20:04:33 -0700
    • Engine revision fee001c93f
    • Dart version 2.4.0

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at /home/keshava/Android/Sdk
    • Android NDK location not configured (optional; useful for native profiling
      support)
    • Platform android-29, build-tools 29.0.2
    • Java binary at: /home/keshava/Development/android-studio/jre/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_202-release-1483-b49-5587405)
    • All Android licenses accepted.

[!] Android Studio (version 3.5)
    • Android Studio at /home/keshava/Development/android-studio
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build
      1.8.0_202-release-1483-b49-5587405)

[✓] VS Code (version 1.38.0)
    • VS Code at /usr/share/code
    • Flutter extension version 3.4.1

[✓] Connected device (1 available)
    • Redmi 6 Pro • 1f04e0bb0405 • android-arm64 • Android 9 (API 28)

! Doctor found issues in 1 category.

cvolzke4 · 2019-09-11T00:36:31Z

@BondarenkoStas I don't know how to reproduce this.

BondarenkoStas · 2019-09-11T09:11:27Z

@keshava19 Maybe you can come up with any steps how to reproduce it? When it occurs? What command do you run?

keshava19 · 2019-09-13T07:14:49Z

@BondarenkoStas I too don't know how to reproduce this bug.

BondarenkoStas · 2019-09-13T09:35:13Z

I would advise you to post it to SO as well. It will be very hard to investigate without knowing where to start, but maybe somebody from community already encountered the issue and can help with it. In this case please paste the link to the question here.

keshava19 · 2019-09-20T07:37:59Z

I/flutter (24943): 'package:flutter/src/gestures/converter.dart': Failed assertion: line 249 pos 20: '_pointers.containsKey(datum.device)': is not true. 
I/flutter (24943): #0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:40:39) 
I/flutter (24943): #1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5) 
I/flutter (24943): #2 PointerEventConverter.expand 
package:flutter/…/gestures/converter.dart:249
I/flutter (24943): #3 _SyncIterator.moveNext (dart:core-patch/core_patch.dart:152:12) 
I/flutter (24943): #4 ListQueue.addAll (dart:collection/queue.dart:655:25) 
I/flutter (24943): #5 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket 
package:flutter/…/gestures/binding.dart:84
I/flutter (24943): #6 _rootRunUnary (dart:async/zone.dart:1136:13) 
I/flutter (24943): #7 _CustomZone.runUnary (dart:async/zone.dart:1029:19) 
I/flutter (24943): #8 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7) 
I/flutter (24943): #9 _invoke1 (dart:ui/hooks.dart:250:10) 
I/flutter (24943): #10 _dispatchPointerDataPacket (dart:ui/hooks.dart:159:5)

I got this when started the app in debug mode.

crazecoder · 2019-10-14T05:02:47Z

I also encountered this bug in the production environment. This is the reported log

NoSuchMethodError: The getter 'pointer' was called on null. Receiver: null Tried calling: pointer
1 #0 PointerEventConverter.expand (package:flutter/src/gestures/converter.dart:254)
2 #1 _SyncIterator.moveNext (dart:core-patch/core_patch.dart:144)
3 #2 ListQueue.addAll (dart:collection/queue.dart:655)
4 #3 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:84)
5 #4 _rootRunUnary (dart:async/zone.dart:1136)
6 #5 _CustomZone.runUnary (dart:async/zone.dart:1029)
7 #6 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931)
8 #7 _invoke1 (dart:ui/hooks.dart:263)
9 #8 _dispatchPointerDataPacket (dart:ui/hooks.dart:172)

NoSuchMethodError: The getter 'lastPosition' was called on null. Receiver: null Tried calling: lastPosition
1 #0 PointerEventConverter.expand (package:flutter/src/gestures/converter.dart:281)
2 #1 _SyncIterator.moveNext (dart:core-patch/core_patch.dart:144)
3 #2 ListQueue.addAll (dart:collection/queue.dart:655)
4 #3 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:84)
5 #4 _rootRunUnary (dart:async/zone.dart:1136)
6 #5 _CustomZone.runUnary (dart:async/zone.dart:1029)
7 #6 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931)
8 #7 _invoke1 (dart:ui/hooks.dart:263)
9 #8 _dispatchPointerDataPacket (dart:ui/hooks.dart:172)

How to reproduce it:
https://stackoverflow.com/questions/55022915/gesture-detector-throws-exception-on-3-finger-swipe

qq326646683 · 2019-10-24T06:51:34Z

same issue

brorhb · 2019-11-05T10:21:30Z

I have also encountered two times in production now. Sorry to say this is all the crash info I have right now

ogrenichv · 2020-01-24T13:55:17Z

Any news? Was it fixed in 1.12?

iapicca · 2020-04-29T14:03:43Z

Hi @cvolzke4
could you please provide a minimal reproducible code sample?
Thank you

cvolzke4 · 2020-04-29T23:06:19Z

I can't reproduce this, I only have the stack trace reported from the app (#quill).

crazecoder mentioned this may reproduce the issue:
https://stackoverflow.com/q/55022915

iapicca · 2020-04-30T14:50:17Z

Hi @ogrenichv @keshava19 @brorhb @qq326646683 @crazecoder
could you please provide a reproducible code sample?
Thank you

mivanzhang · 2020-05-11T02:52:35Z

similar question with flutter 1.9.1

mivanzhang · 2020-05-11T03:23:06Z

mivanzhang · 2020-05-13T09:52:55Z

I found this bug has been fixed in 314eb3b and flutter/engine@132d38c
if you update flutter to 1.12,this will be fixed ,if not ,I advice you to cherry-pick both commits

iapicca · 2020-05-13T13:59:16Z

Hi all
for the issue to be workable is needed a minimal reproducible code sample,
could you please check if the issue is fixed with the latest stable version
Thank you

mivanzhang · 2020-05-14T03:12:15Z

Truely ,I don`t know how to reproduce the bug. We got lots of crashes with this bug ,almost 1% users will come into this situation

lionoggo · 2020-05-14T07:25:13Z

On Android devices, some special gestures may cause this problem, such as dragging three fingers on the screen to realize the screenshot or other.

chunhtai · 2020-05-14T20:10:47Z

This should be fixed with the latest stable 1.17. Includes the tree finger gesture @lionoggo mentioned. I will close this issue for now. If you are still seeing this issue after upgrade to latest stable, please reopen this issue

mivanzhang · 2020-05-15T02:36:03Z

@chunhtai Is this your fix commit? I found this in flutter 1.12.
314eb3b and flutter/engine@132d38c

chunhtai · 2020-05-15T16:50:47Z

@mivanzhang Yes, it is

github-actions · 2021-08-21T05:01:15Z

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 flutter doctor -v and a minimal reproduction of the issue.

BondarenkoStas added the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Sep 6, 2019

no-response bot removed the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Sep 11, 2019

BondarenkoStas added d: stackoverflow Good question for Stack Overflow f: gestures flutter/packages/flutter/gestures repository. labels Sep 13, 2019

BondarenkoStas added framework flutter/packages/flutter repository. See also f: labels. and removed d: stackoverflow Good question for Stack Overflow labels Oct 24, 2019

no-response bot removed the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Apr 29, 2020

iapicca added a: production Issues experienced in live production apps f: gestures flutter/packages/flutter/gestures repository. framework flutter/packages/flutter repository. See also f: labels. and removed in triage Presently being triaged by the triage team labels Apr 30, 2020

iapicca added the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Apr 30, 2020

chunhtai closed this as completed May 14, 2020

github-actions bot locked as resolved and limited conversation to collaborators Aug 21, 2021

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PointerEventConverter.expand: The getter 'pointer' was called on null. #39031

PointerEventConverter.expand: The getter 'pointer' was called on null. #39031

cvolzke4 commented Aug 22, 2019 •

edited by BondarenkoStas

BondarenkoStas commented Sep 4, 2019

keshava19 commented Sep 9, 2019

cvolzke4 commented Sep 11, 2019

BondarenkoStas commented Sep 11, 2019

keshava19 commented Sep 13, 2019

BondarenkoStas commented Sep 13, 2019

keshava19 commented Sep 20, 2019

crazecoder commented Oct 14, 2019 •

edited

qq326646683 commented Oct 24, 2019

brorhb commented Nov 5, 2019

ogrenichv commented Jan 24, 2020

iapicca commented Apr 29, 2020

cvolzke4 commented Apr 29, 2020

iapicca commented Apr 30, 2020

mivanzhang commented May 11, 2020

mivanzhang commented May 11, 2020

mivanzhang commented May 13, 2020

iapicca commented May 13, 2020

mivanzhang commented May 14, 2020

lionoggo commented May 14, 2020

chunhtai commented May 14, 2020

mivanzhang commented May 15, 2020

chunhtai commented May 15, 2020

github-actions bot commented Aug 21, 2021

PointerEventConverter.expand: The getter 'pointer' was called on null. #39031

PointerEventConverter.expand: The getter 'pointer' was called on null. #39031

Comments

cvolzke4 commented Aug 22, 2019 • edited by BondarenkoStas

BondarenkoStas commented Sep 4, 2019

keshava19 commented Sep 9, 2019

cvolzke4 commented Sep 11, 2019

BondarenkoStas commented Sep 11, 2019

keshava19 commented Sep 13, 2019

BondarenkoStas commented Sep 13, 2019

keshava19 commented Sep 20, 2019

crazecoder commented Oct 14, 2019 • edited

qq326646683 commented Oct 24, 2019

brorhb commented Nov 5, 2019

ogrenichv commented Jan 24, 2020

iapicca commented Apr 29, 2020

cvolzke4 commented Apr 29, 2020

iapicca commented Apr 30, 2020

mivanzhang commented May 11, 2020

mivanzhang commented May 11, 2020

mivanzhang commented May 13, 2020

iapicca commented May 13, 2020

mivanzhang commented May 14, 2020

lionoggo commented May 14, 2020

chunhtai commented May 14, 2020

mivanzhang commented May 15, 2020

chunhtai commented May 15, 2020

github-actions bot commented Aug 21, 2021

cvolzke4 commented Aug 22, 2019 •

edited by BondarenkoStas

crazecoder commented Oct 14, 2019 •

edited