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[engine] Three (or more) finger gestures on certain widgets make app unusable #69431

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#84257
Closed
[engine] Three (or more) finger gestures on certain widgets make app unusable#69431
#84257
Labels
P0Critical issues such as a build break or regressionc: crashStack traces logged to the consolecustomer: mulligan (g3)e: device-specificOnly manifests on certain devicesf: gesturesflutter/packages/flutter/gestures repository.found in release: 2.3Found to occur in 2.3has reproducible stepsThe issue has been confirmed reproducible and is ready to work onp: mapsGoogle Maps pluginpackageflutter/packages repository. See also p: labels.r: fixedIssue is closed as already fixed in a newer versionwaiting for PR to land (fixed)A fix is in flight

Description

@ThexXTURBOXx
ThexXTURBOXx
opened on Oct 30, 2020

Description

When using 3 or more fingers on the Google Map, then the app throws an exception.
After this exception is thrown once, it also gets thrown when using any other gesture (one or two fingers).
The problem then persists until the app is restarted.

Test Environment

I tested this on a Xiaomi Mi9T Pro with the Xiaomi.eu rom version 20.10.29 using my main app, a custom made app for this testing purpose and it even affects the example app itself.
Edit 1: Also tested now on COL-L29 (Honor 10) with Android 9, EMUI 9.1.0
Edit 2: Also tested by @takinok on Galaxy S20 5G with Android 10 (see AndreHaueisen/flushbar#161)
Edit 3: Also tested by @rakeshlanjewar on Redmi Note 6 Pro (tulip)

Version used

According to my own pubspec.lock, I am using google_maps_flutter 1.0.6 (still exists in 2.0.2) and location 3.0.2 (still exists in 4.1.1).
Edit 1: Also, this affects the example app, which only has google_maps_flutter.
Edit 2: It doesn't only affect google_maps_flutter, but also various other libraries and widgets

Video

https://www.youtube.com/watch?v=38tWaMTFqEQ

Exception

Flutter 2 (current) 
E/AccessibilityNodeInfo(26907): Rejecting attempt to make a View its own child
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:597:31)
E/flutter (26907): #1      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #2      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #3      PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #4      PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #5      _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #6      PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #7      PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #8      GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #9      GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #10     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #11     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #12     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #13     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #14     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #15     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #16     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #17     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #18     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #19     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #20     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:597:31)
E/flutter (26907): #1      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #2      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #3      PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #4      PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #5      _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #6      PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #7      PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #8      GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #9      GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #10     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #11     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #12     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #13     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #14     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #15     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #16     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #17     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #18     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #19     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #20     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
W/.ssh.checkitno(26907): Accessing hidden method Ldalvik/system/CloseGuard;->get()Ldalvik/system/CloseGuard; (greylist,core-platform-api, reflection, allowed)
W/.ssh.checkitno(26907): Accessing hidden method Ldalvik/system/CloseGuard;->open(Ljava/lang/String;)V (greylist,core-platform-api, reflection, allowed)
W/.ssh.checkitno(26907): Accessing hidden method Ldalvik/system/CloseGuard;->warnIfOpen()V (greylist,core-platform-api, reflection, allowed)
W/DynamiteModule(26907): Local module descriptor class for com.google.android.gms.providerinstaller.dynamite not found.
I/DynamiteModule(26907): Considering local module com.google.android.gms.providerinstaller.dynamite:0 and remote module com.google.android.gms.providerinstaller.dynamite:0
W/ProviderInstaller(26907): Failed to load providerinstaller module: No acceptable module found. Local version is 0 and remote version is 0.
V/NativeCrypto(26907): Registering com/google/android/gms/org/conscrypt/NativeCrypto's 287 native methods...
W/.ssh.checkitno(26907): Accessing hidden method Ljava/security/spec/ECParameterSpec;->getCurveName()Ljava/lang/String; (greylist, reflection, allowed)
I/ProviderInstaller(26907): Installed default security provider GmsCore_OpenSSL
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/ConscryptEngineSocket;->setUseSessionTickets(Z)V (greylist-max-q,core-platform-api, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->setUseSessionTickets(Z)V (greylist-max-q,core-platform-api, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/AbstractConscryptSocket;->setUseSessionTickets(Z)V (greylist-max-q, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/ConscryptEngineSocket;->setHostname(Ljava/lang/String;)V (greylist-max-q,core-platform-api, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->setHostname(Ljava/lang/String;)V (greylist-max-q,core-platform-api, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/AbstractConscryptSocket;->setHostname(Ljava/lang/String;)V (greylist-max-q, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->setAlpnProtocols([B)V (greylist-max-q,core-platform-api, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/AbstractConscryptSocket;->setAlpnProtocols([B)V (greylist-max-q, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Ljava/security/spec/ECParameterSpec;->setCurveName(Ljava/lang/String;)V (greylist, reflection, allowed)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->getAlpnSelectedProtocol()[B (greylist-max-q,core-platform-api, reflection, denied)
W/.ssh.checkitno(26907): Accessing hidden method Lcom/android/org/conscrypt/AbstractConscryptSocket;->getAlpnSelectedProtocol()[B (greylist-max-q, reflection, denied)
E/AccessibilityNodeInfo(26907): Rejecting attempt to make a View its own child
I/chatty  (26907): uid=10345(com.ssh.checkitnow) identical 49 lines
E/AccessibilityNodeInfo(26907): Rejecting attempt to make a View its own child
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:602:73)
E/flutter (26907): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:412:31)
E/flutter (26907): #2      ListIterator.moveNext (dart:_internal/iterable.dart:341:26)
E/flutter (26907): #3      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
E/flutter (26907): #4      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
E/flutter (26907): #5      new List.of (dart:core-patch/array_patch.dart:50:28)
E/flutter (26907): #6      ListIterable.toList (dart:_internal/iterable.dart:212:44)
E/flutter (26907): #7      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:603:12)
E/flutter (26907): #8      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #9      List.forEach (dart:core-patch/growable_array.dart:403:8)
E/flutter (26907): #10     _PlatformViewGestureRecognizer._flushPointerCache (package:flutter/src/rendering/platform_view.dart:583:35)
E/flutter (26907): #11     _PlatformViewGestureRecognizer.acceptGesture (package:flutter/src/rendering/platform_view.dart:565:5)
E/flutter (26907): #12     _CombiningGestureArenaMember.acceptGesture (package:flutter/src/gestures/team.dart:42:14)
E/flutter (26907): #13     GestureArenaManager._resolveByDefault (package:flutter/src/gestures/arena.dart:251:25)
E/flutter (26907): #14     GestureArenaManager._tryToResolveArena.<anonymous closure> (package:flutter/src/gestures/arena.dart:232:31)
E/flutter (26907): #15     _rootRun (dart:async/zone.dart:1346:47)
E/flutter (26907): #16     _CustomZone.run (dart:async/zone.dart:1258:19)
E/flutter (26907): #17     _CustomZone.runGuarded (dart:async/zone.dart:1162:7)
E/flutter (26907): #18     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1202:23)
E/flutter (26907): #19     _rootRun (dart:async/zone.dart:1354:13)
E/flutter (26907): #20     _CustomZone.run (dart:async/zone.dart:1258:19)
E/flutter (26907): #21     _CustomZone.runGuarded (dart:async/zone.dart:1162:7)
E/flutter (26907): #22     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1202:23)
E/flutter (26907): #23     _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
E/flutter (26907): #24     _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
E/flutter (26907): 
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:602:73)
E/flutter (26907): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:412:31)
E/flutter (26907): #2      ListIterator.moveNext (dart:_internal/iterable.dart:341:26)
E/flutter (26907): #3      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
E/flutter (26907): #4      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
E/flutter (26907): #5      new List.of (dart:core-patch/array_patch.dart:50:28)
E/flutter (26907): #6      ListIterable.toList (dart:_internal/iterable.dart:212:44)
E/flutter (26907): #7      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:603:12)
E/flutter (26907): #8      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #9      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #10     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #11     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #12     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #13     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #14     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #15     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #16     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #17     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #18     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #19     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #20     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #21     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #22     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #23     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #24     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #25     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #26     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #27     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:602:73)
E/flutter (26907): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:412:31)
E/flutter (26907): #2      ListIterator.moveNext (dart:_internal/iterable.dart:341:26)
E/flutter (26907): #3      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
E/flutter (26907): #4      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
E/flutter (26907): #5      new List.of (dart:core-patch/array_patch.dart:50:28)
E/flutter (26907): #6      ListIterable.toList (dart:_internal/iterable.dart:212:44)
E/flutter (26907): #7      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:603:12)
E/flutter (26907): #8      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #9      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #10     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #11     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #12     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #13     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #14     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #15     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #16     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #17     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #18     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #19     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #20     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #21     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #22     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #23     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #24     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #25     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #26     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #27     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
I/chatty  (26907): uid=10345(com.ssh.checkitnow) 1.ui identical 2 lines
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:602:73)
E/flutter (26907): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:412:31)
E/flutter (26907): #2      ListIterator.moveNext (dart:_internal/iterable.dart:341:26)
E/flutter (26907): #3      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
E/flutter (26907): #4      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
E/flutter (26907): #5      new List.of (dart:core-patch/array_patch.dart:50:28)
E/flutter (26907): #6      ListIterable.toList (dart:_internal/iterable.dart:212:44)
E/flutter (26907): #7      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:603:12)
E/flutter (26907): #8      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #9      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #10     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #11     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #12     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #13     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #14     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #15     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #16     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #17     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #18     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #19     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #20     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #21     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #22     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #23     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #24     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #25     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #26     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #27     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:602:73)
E/flutter (26907): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:412:31)
E/flutter (26907): #2      ListIterator.moveNext (dart:_internal/iterable.dart:341:26)
E/flutter (26907): #3      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
E/flutter (26907): #4      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
E/flutter (26907): #5      new List.of (dart:core-patch/array_patch.dart:50:28)
E/flutter (26907): #6      ListIterable.toList (dart:_internal/iterable.dart:212:44)
E/flutter (26907): #7      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:603:12)
E/flutter (26907): #8      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #9      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #10     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #11     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #12     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #13     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #14     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #15     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #16     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #17     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #18     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #19     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #20     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #21     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #22     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #23     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #24     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #25     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #26     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #27     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
I/chatty  (26907): uid=10345(com.ssh.checkitnow) 1.ui identical 3 lines
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:602:73)
E/flutter (26907): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:412:31)
E/flutter (26907): #2      ListIterator.moveNext (dart:_internal/iterable.dart:341:26)
E/flutter (26907): #3      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
E/flutter (26907): #4      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
E/flutter (26907): #5      new List.of (dart:core-patch/array_patch.dart:50:28)
E/flutter (26907): #6      ListIterable.toList (dart:_internal/iterable.dart:212:44)
E/flutter (26907): #7      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:603:12)
E/flutter (26907): #8      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #9      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #10     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #11     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #12     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #13     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #14     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #15     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #16     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #17     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #18     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #19     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #20     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #21     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #22     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #23     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #24     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #25     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #26     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #27     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
E/flutter (26907): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter (26907): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:602:73)
E/flutter (26907): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:412:31)
E/flutter (26907): #2      ListIterator.moveNext (dart:_internal/iterable.dart:341:26)
E/flutter (26907): #3      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
E/flutter (26907): #4      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
E/flutter (26907): #5      new List.of (dart:core-patch/array_patch.dart:50:28)
E/flutter (26907): #6      ListIterable.toList (dart:_internal/iterable.dart:212:44)
E/flutter (26907): #7      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:603:12)
E/flutter (26907): #8      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:869:31)
E/flutter (26907): #9      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:558:26)
E/flutter (26907): #10     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
E/flutter (26907): #11     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:138:9)
E/flutter (26907): #12     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26907): #13     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
E/flutter (26907): #14     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
E/flutter (26907): #15     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:439:19)
E/flutter (26907): #16     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (26907): #17     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:288:11)
E/flutter (26907): #18     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (26907): #19     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (26907): #20     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (26907): #21     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (26907): #22     _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26907): #23     _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26907): #24     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26907): #25     _invoke1 (dart:ui/hooks.dart:186:10)
E/flutter (26907): #26     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (26907): #27     _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (26907): 
E/AccessibilityNodeInfo(26907): Rejecting attempt to make a View its own child
I/chatty  (26907): uid=10345(com.ssh.checkitnow) identical 49 lines
E/AccessibilityNodeInfo(26907): Rejecting attempt to make a View its own child
Flutter 1 
I/HiTouch_HiTouchSensor(13396): HiTouch Setting Switch, ON
I/HiTouch_HiTouchSensor(13396): Checking pkgName: io.flutter.plugins.googlemapsexample Checking result: true
I/HiTouch_HiTouchSensor(13396): HiTouch Setting Switch, ON
W/HiTouch_PressGestureDetector(13396): HiTouch Miss: more than two pointers.
W/HiTouch_PressGestureDetector(13396): HiTouch Miss: more than two pointers.
W/HiTouch_PressGestureDetector(13396): Touch pointer move a lot. The moving distance of X is:27.974106, limit is:60The moving distance of Y is:61.97281, limit is:60
I/HiTouch_HiTouchSensor(13396): HiTouch Setting Switch, ON
I/HiTouch_HiTouchSensor(13396): Checking pkgName: io.flutter.plugins.googlemapsexample Checking result: true
W/HiTouch_PressGestureDetector(13396): HiTouch Miss: more than two pointers.
E/flutter (13396): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Null check operator used on a null value
E/flutter (13396): #0      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:596:31)
E/flutter (13396): #1      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:864:31)
E/flutter (13396): #2      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:535:26)
E/flutter (13396): #3      PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:77:12)
E/flutter (13396): #4      PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:122:9)
E/flutter (13396): #5      _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:377:8)
E/flutter (13396): #6      PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:120:18)
E/flutter (13396): #7      PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:106:7)
E/flutter (13396): #8      GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:358:19)
E/flutter (13396): #9      GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
E/flutter (13396): #10     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
E/flutter (13396): #11     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
E/flutter (13396): #12     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
E/flutter (13396): #13     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
E/flutter (13396): #14     _rootRunUnary (dart:async/zone.dart:1206:13)
E/flutter (13396): #15     _CustomZone.runUnary (dart:async/zone.dart:1100:19)
E/flutter (13396): #16     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
E/flutter (13396): #17     _invoke1 (dart:ui/hooks.dart:265:10)
E/flutter (13396): #18     _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
E/flutter (13396): 
I/chatty  (13396): uid=10200(io.flutter.plugins.googlemapsexample) 1.ui identical 2 lines
E/flutter (13396): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Null check operator used on a null value
E/flutter (13396): #0      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:596:31)
E/flutter (13396): #1      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:864:31)
E/flutter (13396): #2      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:535:26)
E/flutter (13396): #3      PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:77:12)
E/flutter (13396): #4      PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:122:9)
E/flutter (13396): #5      _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:377:8)
E/flutter (13396): #6      PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:120:18)
E/flutter (13396): #7      PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:106:7)
E/flutter (13396): #8      GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:358:19)
E/flutter (13396): #9      GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
E/flutter (13396): #10     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
E/flutter (13396): #11     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
E/flutter (13396): #12     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
E/flutter (13396): #13     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
E/flutter (13396): #14     _rootRunUnary (dart:async/zone.dart:1206:13)
E/flutter (13396): #15     _CustomZone.runUnary (dart:async/zone.dart:1100:19)
E/flutter (13396): #16     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
E/flutter (13396): #17     _invoke1 (dart:ui/hooks.dart:265:10)
E/flutter (13396): #18     _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
E/flutter (13396): 
I/HiTouch_HiTouchSensor(13396): HiTouch Setting Switch, ON
E/flutter (13396): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Null check operator used on a null value
E/flutter (13396): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:601:73)
E/flutter (13396): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:417:31)
E/flutter (13396): #2      ListIterator.moveNext (dart:_internal/iterable.dart:343:26)
E/flutter (13396): #3      new List.from (dart:core-patch/array_patch.dart:38:29)
E/flutter (13396): #4      new List.of (dart:core-patch/array_patch.dart:68:17)
E/flutter (13396): #5      ListIterable.toList (dart:_internal/iterable.dart:211:44)
E/flutter (13396): #6      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:602:12)
E/flutter (13396): #7      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:864:31)
E/flutter (13396): #8      List.forEach (dart:core-patch/growable_array.dart:313:8)
E/flutter (13396): #9      _PlatformViewGestureRecognizer._flushPointerCache (package:flutter/src/rendering/platform_view.dart:560:35)
E/flutter (13396): #10     _PlatformViewGestureRecognizer.acceptGesture (package:flutter/src/rendering/platform_view.dart:542:5)
E/flutter (13396): #11     _CombiningGestureArenaMember.acceptGesture (package:flutter/src/gestures/team.dart:42:14)
E/flutter (13396): #12     GestureArenaManager._resolveByDefault (package:flutter/src/gestures/arena.dart:251:25)
E/flutter (13396): #13     GestureArenaManager._tryToResolveArena.<anonymous closure> (package:flutter/src/gestures/arena.dart:232:31)
E/flutter (13396): #14     _rootRun (dart:async/zone.dart:1182:47)
E/flutter (13396): #15     _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (13396): #16     _CustomZone.runGuarded (dart:async/zone.dart:997:7)
E/flutter (13396): #17     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1037:23)
E/flutter (13396): #18     _rootRun (dart:async/zone.dart:1190:13)
E/flutter (13396): #19     _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (13396): #20     _CustomZone.runGuarded (dart:async/zone.dart:997:7)
E/flutter (13396): #21     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1037:23)
E/flutter (13396): #22     _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
E/flutter (13396): #23     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
E/flutter (13396): 
E/flutter (13396): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Null check operator used on a null value
E/flutter (13396): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:601:73)
E/flutter (13396): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:417:31)
E/flutter (13396): #2      ListIterator.moveNext (dart:_internal/iterable.dart:343:26)
E/flutter (13396): #3      new List.from (dart:core-patch/array_patch.dart:38:29)
E/flutter (13396): #4      new List.of (dart:core-patch/array_patch.dart:68:17)
E/flutter (13396): #5      ListIterable.toList (dart:_internal/iterable.dart:211:44)
E/flutter (13396): #6      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:602:12)
E/flutter (13396): #7      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:864:31)
E/flutter (13396): #8      _PlatformViewGestureRecognizer.handleEvent (package:flutter/src/rendering/platform_view.dart:535:26)
E/flutter (13396): #9      PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:77:12)
E/flutter (13396): #10     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:122:9)
E/flutter (13396): #11     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:377:8)
E/flutter (13396): #12     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:120:18)
E/flutter (13396): #13     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:106:7)
E/flutter (13396): #14     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:358:19)
E/flutter (13396): #15     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
E/flutter (13396): #16     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
E/flutter (13396): #17     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
E/flutter (13396): #18     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
E/flutter (13396): #19     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
E/flutter (13396): #20     _rootRunUnary (dart:async/zone.dart:1206:13)
E/flutter (13396): #21     _CustomZone.runUnary (dart:async/zone.dart:1100:19)
E/flutter (13396): #22     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
E/flutter (13396): #23     _invoke1 (dart:ui/hooks.dart:265:10)
E/flutter (13396): #24     _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
E/flutter (13396): 
I/HiTouch_HiTouchSensor(13396): Checking pkgName: io.flutter.plugins.googlemapsexample Checking result: true
W/HiTouch_PressGestureDetector(13396): HiTouch Miss: more than two pointers.
E/flutter (13396): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Null check operator used on a null value
E/flutter (13396): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:601:73)
E/flutter (13396): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:417:31)
E/flutter (13396): #2      ListIterator.moveNext (dart:_internal/iterable.dart:343:26)
E/flutter (13396): #3      new List.from (dart:core-patch/array_patch.dart:38:29)
E/flutter (13396): #4      new List.of (dart:core-patch/array_patch.dart:68:17)
E/flutter (13396): #5      ListIterable.toList (dart:_internal/iterable.dart:211:44)
E/flutter (13396): #6      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:602:12)
E/flutter (13396): #7      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:864:31)
E/flutter (13396): #8      List.forEach (dart:core-patch/growable_array.dart:313:8)
E/flutter (13396): #9      _PlatformViewGestureRecognizer._flushPointerCache (package:flutter/src/rendering/platform_view.dart:560:35)
E/flutter (13396): #10     _PlatformViewGestureRecognizer.acceptGesture (package:flutter/src/rendering/platform_view.dart:542:5)
E/flutter (13396): #11     _CombiningGestureArenaMember.acceptGesture (package:flutter/src/gestures/team.dart:42:14)
E/flutter (13396): #12     GestureArenaManager._resolveByDefault (package:flutter/src/gestures/arena.dart:251:25)
E/flutter (13396): #13     GestureArenaManager._tryToResolveArena.<anonymous closure> (package:flutter/src/gestures/arena.dart:232:31)
E/flutter (13396): #14     _rootRun (dart:async/zone.dart:1182:47)
E/flutter (13396): #15     _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (13396): #16     _CustomZone.runGuarded (dart:async/zone.dart:997:7)
E/flutter (13396): #17     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1037:23)
E/flutter (13396): #18     _rootRun (dart:async/zone.dart:1190:13)
E/flutter (13396): #19     _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (13396): #20     _CustomZone.runGuarded (dart:async/zone.dart:997:7)
E/flutter (13396): #21     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1037:23)
E/flutter (13396): #22     _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
E/flutter (13396): #23     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
E/flutter (13396): 
E/flutter (13396): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Null check operator used on a null value
E/flutter (13396): #0      _AndroidMotionEventConverter.toAndroidMotionEvent.<anonymous closure> (package:flutter/src/services/platform_views.dart:601:73)
E/flutter (13396): #1      MappedListIterable.elementAt (dart:_internal/iterable.dart:417:31)
E/flutter (13396): #2      ListIterator.moveNext (dart:_internal/iterable.dart:343:26)
E/flutter (13396): #3      new List.from (dart:core-patch/array_patch.dart:38:29)
E/flutter (13396): #4      new List.of (dart:core-patch/array_patch.dart:68:17)
E/flutter (13396): #5      ListIterable.toList (dart:_internal/iterable.dart:211:44)
E/flutter (13396): #6      _AndroidMotionEventConverter.toAndroidMotionEvent (package:flutter/src/services/platform_views.dart:602:12)
E/flutter (13396): #7      AndroidViewController.dispatchPointerEvent (package:flutter/src/services/platform_views.dart:864:31)
E/flutter (13396): #8      List.forEach (dart:core-patch/growable_array.dart:313:8)
E/flutter (13396): #9      _PlatformViewGestureRecognizer._flushPointerCache (package:flutter/src/rendering/platform_view.dart:560:35)
E/flutter (13396): #10     _PlatformViewGestureRecognizer.acceptGesture (package:flutter/src/rendering/platform_view.dart:542:5)
E/flutter (13396): #11     _CombiningGestureArenaMember.acceptGesture (package:flutter/src/gestures/team.dart:42:14)
E/flutter (13396): #12     GestureArenaManager._resolveByDefault (package:flutter/src/gestures/arena.dart:251:25)
E/flutter (13396): #13     GestureArenaManager._tryToResolveArena.<anonymous closure> (package:flutter/src/gestures/arena.dart:232:31)
E/flutter (13396): #14     _rootRun (dart:async/zone.dart:1182:47)
E/flutter (13396): #15     _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (13396): #16     _CustomZone.runGuarded (dart:async/zone.dart:997:7)
E/flutter (13396): #17     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1037:23)
E/flutter (13396): #18     _rootRun (dart:async/zone.dart:1190:13)
E/flutter (13396): #19     _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (13396): #20     _CustomZone.runGuarded (dart:async/zone.dart:997:7)
E/flutter (13396): #21     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1037:23)
E/flutter (13396): #22     _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
E/flutter (13396): #23     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
E/flutter (13396):

Fix

A workaround can be found in the PRs #72611, #82013, and #78874 (especially notice the different approaches mentioned in #78874 (comment)).

A real fix would need the engine to be modified. Right now, when a 3-fingers (or more) gestures is registered on the device, the engine registers the gesture as some pointer down events, one for every finger. After that a position update, then a cancel pointers, and another position update event follow. Since the downTimeMillis get reset and the pointerPositions and pointerProperties lists have inconsistent lengths, the toAndroidMotionEvent function fails when either unpacking the downTimeMillis or when mapping the pointerPositions or pointerProperties lists to their corresponding pointers (since pointerPositions.length > pointerProperties.length).

flutter doctor -v

It should be worth noting, that I am also affected by #11940 and have not applied any workaround or whatsoever (the flutter and dart plugins are installed of course in Android Studio)

flutter doctor -v 
[✓] Flutter (Channel stable, 2.0.6, on Microsoft Windows [Version 10.0.19042.964], locale de-DE)
    • Flutter version 2.0.6 at G:\Programme\Flutter_SDK
    • Framework revision 1d9032c7e1 (10 days ago), 2021-04-29 17:37:58 -0700
    • Engine revision 05e680e202
    • Dart version 2.12.3

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at G:\Programme\Android_SDK
    • Platform android-S, build-tools 30.0.3
    • Java binary at: B:\Programme\Java\JDK_14_0_1_64\bin\java
    • Java version Java(TM) SE Runtime Environment (build 14.0.1+7)
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.

[✓] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[!] Visual Studio - develop for Windows (Visual Studio Community 2017 15.9.21)
    • Visual Studio at B:\Programme\MicrosoftVS\2017\Community
    • Visual Studio Community 2017 version 15.9.28307.1064
    • Windows 10 SDK version 10.0.17763.0
    ✗ Visual Studio 2019 or later is required.
      Download at https://visualstudio.microsoft.com/downloads/.
      Please install the "Desktop development with C++" workload, including all of its default components

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions).

[✓] IntelliJ IDEA Ultimate Edition (version 2021.1)
    • IntelliJ at G:\Programme\JetBrains\Toolbox\apps\IDEA-U\ch-0\211.7142.45
    • 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

[✓] Connected device (3 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.19042.964]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 89.0.4389.128
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 90.0.818.56

! Doctor found issues in 3 categories.
Old flutter doctor -v 
[✓] Flutter (Channel stable, 1.22.3, on Microsoft Windows [Version 10.0.19042.610], locale de-DE)
    • Flutter version 1.22.3 at G:\Programme\Flutter_SDK
    • Framework revision 8874f21e79 (4 days ago), 2020-10-29 14:14:35 -0700
    • Engine revision a1440ca392
    • Dart version 2.10.3

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at G:\Programme\Android_SDK
    • Platform android-30, build-tools 30.0.2
    • Java binary at: G:\Programme\JetBrains\Toolbox\apps\AndroidStudio\ch-0\201.6858069\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[!] Android Studio (version 4.1.0)
    • Android Studio at G:\Programme\JetBrains\Toolbox\apps\AndroidStudio\ch-0\201.6858069
    ✗ 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_242-release-1644-b01)

[✓] Connected device (1 available)
    • Mi 9T Pro (mobile) • 4d243599 • android-arm64 • Android 10 (API 29)

! Doctor found issues in 1 category.

Activity

  1. darshankawar commented on Nov 2, 2020

    @darshankawar
    darshankawar
    on Nov 2, 2020
    Member

    @ThexXTURBOXx
    Can you provide flutter doctor -v ? Also location is a 3rd party plugin. Can you remove location plugin code and try again to see if you still get exception ?
    Thanks.

  2. darshankawar
    added
    in triagePresently being triaged by the triage team
    waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter responds
    on Nov 2, 2020

  3. ThexXTURBOXx commented on Nov 2, 2020

    @ThexXTURBOXx
    ThexXTURBOXx
    on Nov 2, 2020
    Author

    Without location:

    As I already said, this issue also affects the example app at this specific commit (the newest one) as well, which doesn't have the location plugin installed.

    flutter doctor -v:

    It should be worth noting, that I am also affected by #11940 and have not applied any workaround or whatsoever (the flutter and dart plugins are installed of course in Android Studio)

    [✓] Flutter (Channel stable, 1.22.3, on Microsoft Windows [Version 10.0.19042.610], locale de-DE)
    • Flutter version 1.22.3 at G:\Programme\Flutter_SDK
    • Framework revision 8874f21e79 (4 days ago), 2020-10-29 14:14:35 -0700
    • Engine revision a1440ca392
    • Dart version 2.10.3

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at G:\Programme\Android_SDK
    • Platform android-30, build-tools 30.0.2
    • Java binary at: G:\Programme\JetBrains\Toolbox\apps\AndroidStudio\ch-0\201.6858069\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[!] Android Studio (version 4.1.0)
    • Android Studio at G:\Programme\JetBrains\Toolbox\apps\AndroidStudio\ch-0\201.6858069
    ✗ 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_242-release-1644-b01)

[✓] Connected device (1 available)
    • Mi 9T Pro (mobile) • 4d243599 • android-arm64 • Android 10 (API 29)

! Doctor found issues in 1 category.
  4. no-response
    removed
    waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter responds
    on Nov 2, 2020

  5. darshankawar commented on Nov 2, 2020

    @darshankawar
    darshankawar
    on Nov 2, 2020
    Member

    @ThexXTURBOXx
    Tested with official google_maps_flutter plugin using Android 8.1.0 device on latest stable and used 3 and 4 fingers simultaneously to drag the map, but didn't see the issue. The map scrolled and moved properly.

    69431.mp4.zip

    flutter doctor -v 
    
[✓] Flutter (Channel stable, 1.22.3, on Mac OS X 10.15.4 19E2269, locale en-IN)
    • Flutter version 1.22.3 at /Users/dhs/documents/Fluttersdk/flutter
    • Framework revision 8874f21e79 (4 days ago), 2020-10-29 14:14:35 -0700
    • Engine revision a1440ca392
    • Dart version 2.10.3

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.0)
    • Android SDK at /Users/dhs/Library/Android/sdk
    • Platform android-30, build-tools 30.0.0
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 12.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.0.1, Build version 12A7300
    • CocoaPods version 1.9.3

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 46.0.2
    • Dart plugin version 193.7361
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.50.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.15.1

[✓] Connected device (1 available)
    • SM A260G (mobile) • 5200763ebcfa861f • android-arm • Android 8.1.0 (API
      27)

• No issues found!

    Can you check if this is only happening on specific device you have or on other emulators too ?
    Thanks.

  6. darshankawar
    added
    waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter responds
    on Nov 2, 2020

  7. ThexXTURBOXx commented on Nov 2, 2020

    @ThexXTURBOXx
    ThexXTURBOXx
    on Nov 2, 2020
    Author

    Also tested on COL-L29 (Honor 10) with Android 9, EMUI 9.1.0.
    Same exception: https://pastebin.com/pbKz4ZJG

    How can I simulate a three-finger gesture in the emulator or is that even possible?

  8. no-response
    removed
    waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter responds
    on Nov 2, 2020

  9. darshankawar commented on Nov 3, 2020

    @darshankawar
    darshankawar
    on Nov 3, 2020
    Member

    @ThexXTURBOXx
    That was my bad to suggest to try on emulator, didn't realize that :-)
    Anyways, I also tried on Samsung S10+ device but didn't see the issue nor the exception in the log.

    Screenshot 2020-11-03 at 11 29 29 AM

    69431.mp4.zip

    Since I don't have the devices you mentioned, I am not sure if it's happening only on the said specific devices.
    Can you provide video of the issue ?

  10. darshankawar
    added
    waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter responds
    on Nov 3, 2020

  11. ThexXTURBOXx commented on Nov 3, 2020

    @ThexXTURBOXx
    ThexXTURBOXx
    on Nov 3, 2020
    Author

    No problem, okay :)

    Interesting, maybe it is related to my devices using a custom Android flavor (Honor 10 uses EMUI, Mi 9T Pro uses MIUI).
    I uploaded a video of the issue here: https://www.youtube.com/watch?v=38tWaMTFqEQ
    I hope, that this is sufficient. If not, I can record more parts of the issue or something separately again.

  12. no-response
    removed
    waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter responds
    on Nov 3, 2020

  13. darshankawar commented on Nov 3, 2020

    @darshankawar
    darshankawar
    on Nov 3, 2020
    Member

    I am unable to replicate the issue using gestures (multiple fingers at once to scroll), but per author and video, it seem to be happening consistently. Keeping this issue open for further analysis.

  14. darshankawar
    removed
    in triagePresently being triaged by the triage team
    on Nov 3, 2020

  15. 33 remaining items

  16. pedromassangocode
    added
    found in release: 2.3Found to occur in 2.3
    has reproducible stepsThe issue has been confirmed reproducible and is ready to work on
    and removed
    passed first triage
    on May 20, 2021
  17. xster
    added
    customer: mulligan (g3)
    P2
    on Jun 8, 2021

  18. xster commented on Jun 8, 2021

    @xster
    xster
    on Jun 8, 2021
    Contributor

    related issue b/189813582

    @blasten, could you take a look?

  19. blasten commented on Jun 8, 2021

    @blasten
    blasten
    on Jun 8, 2021

    This fix is #82013 although it's missing tests.

  20. chinmaygarde
    added
    waiting for PR to land (fixed)A fix is in flight
    on Jun 8, 2021
  21. fluttergithubbot
    closed this as completedin #84257on Jun 11, 2021
  22. darshankawar
    added
    r: fixedIssue is closed as already fixed in a newer version
    on Jun 11, 2021

  23. github-actions commented on Jul 31, 2021

    @github-actions
    github-actionsBot
    on Jul 31, 2021

    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.

  24. github-actions
    locked as resolved and limited conversation to collaborators on Jul 31, 2021
  25. flutter-triage-bot
    added
    P0Critical issues such as a build break or regression
    and removed
    P2
    on Jun 28, 2023
  26. flutter-triage-bot
    added
    packageflutter/packages repository. See also p: labels.
    on Jul 5, 2023
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    P0Critical issues such as a build break or regressionc: crashStack traces logged to the consolecustomer: mulligan (g3)e: device-specificOnly manifests on certain devicesf: gesturesflutter/packages/flutter/gestures repository.found in release: 2.3Found to occur in 2.3has reproducible stepsThe issue has been confirmed reproducible and is ready to work onp: mapsGoogle Maps pluginpackageflutter/packages repository. See also p: labels.r: fixedIssue is closed as already fixed in a newer versionwaiting for PR to land (fixed)A fix is in flight

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