Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference #21

DuarteBarbosaPT · 2017-02-18T01:49:29Z

It works, but sometimes it shows this error:
(Double Tap)

I don't know how to replicate tho :/

Process: com.test.testmenu, PID: 5675
                  java.lang.NullPointerException: Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference
                      at com.github.nisrulz.sensey.TouchTypeDetector$a.onScroll(SourceFile:169)
                      at android.view.GestureDetector.onTouchEvent(GestureDetector.java:619)
                      at android.support.v4.view.GestureDetectorCompat$GestureDetectorCompatImplJellybeanMr2.onTouchEvent(GestureDetectorCompat.java:479)
                      at android.support.v4.view.GestureDetectorCompat.onTouchEvent(GestureDetectorCompat.java:542)
                      at com.github.nisrulz.sensey.Sensey.setupDispatchTouchEvent(SourceFile:4102)
                      at com.quarkprojects.detetordeazeite.MainActivity.dispatchTouchEvent(MainActivity.java:1202)
                      at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:71)
                      at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:71)
                      at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2364)
                      at android.view.View.dispatchPointerEvent(View.java:9514)
                      at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4230)
                      at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4096)
                      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3642)
                      at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3695)
                      at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3661)
                      at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3787)
                      at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3669)
                      at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3844)
                      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3642)
                      at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3695)
                      at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3661)
                      at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3669)
                      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3642)
                      at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5922)
                      at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5896)
                      at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5857)
                      at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6025)
                      at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
                      at android.os.MessageQueue.nativePollOnce(Native Method)
                      at android.os.MessageQueue.next(MessageQueue.java:323)
                      at android.os.Looper.loop(Looper.java:135)
                      at android.app.ActivityThread.main(ActivityThread.java:5417)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

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

nisrulz · 2017-02-18T02:24:25Z

@PedroBarbosaPT Can you provide device details and os details.

DuarteBarbosaPT · 2017-02-18T16:04:17Z

@nisrulz Android Emulator - Nexus 5 API 23
Android 6.0

nisrulz · 2017-02-28T08:55:49Z

@PedroBarbosaPT I have yet to reproduce this issue. Just so you know this issue isn't abandoned. 😅 Will update you when I am able to replicate and provide a possible solution.

DuarteBarbosaPT · 2017-02-28T14:12:48Z

@nisrulz No problem. The error never happened again, so ... 😅

nisrulz · 2017-02-28T18:44:08Z

Hmm.. good to know that. I am closing this issue until it resurfaces again.

Patra89 · 2017-11-10T00:17:07Z

I have the same problem. From my stats on Fabric it looks like it occurs only on Samsung (94%) and Huawei(6%) devices. I wasn't able to replicate the problem myself. It's the most occurring bug in my app right now, Is there any solution to this?

nisrulz · 2017-11-10T02:46:22Z

Hi @Patra89
Could you share information from your fabric account. For both devices where you are seeing this. Also please provide me full details of the device specs. If you do figure out how to replicate this that would be really helpful too.

Patra89 · 2017-11-10T11:55:58Z

Stats from Fabric:

Samsung devices: Galaxy S4, SM-G950U, Galaxy S7 Edge, SM-G950F, SM-A320FL, Galaxy S7, Galaxy S6, SM-N950F, SM-N950F, Galaxy Note4, Galaxy S6 Edge, Galaxy A7(2016), Galaxy S6 Edge+

Huawei devices: P9, P8 Lite

Operating systems:
7 - 64%
5 - 23%
6 - 13%
(I don't support anything below 5.0)

Device statistics:
Proximity On - 6%
App in Focus - 6%
Rooted - 0%

Raport on the same problem from my Google Play Console:

Operating systems:

Android 7.0 | 58,8%
Android 5.0 | 23,5%
Android 6.0 | 14,7%
Android 7.1 | 2,9%

…PE issues Fixes Issue #21

VanFanelia · 2020-10-14T13:41:00Z

Have the same bug here on my test Device.

Stack trace:

2020-10-14 15:07:32.521 18965-18965/de.sipgate.app.satellite V/ProfileListEntry: [2020-10-14 15:07:32:517] [18965] [VERBO] [ProfileListEntry]: Event was ACTION_MOVE
2020-10-14 15:07:32.528 18965-18965/de.sipgate.app.satellite V/ProfileListEntry: [2020-10-14 15:07:32:528] [18965] [VERBO] [ProfileListEntry]: Data: rawX: 486.82617, x: 486.82617, xPrecision: 1.0
2020-10-14 15:07:32.568 18965-18965/de.sipgate.app.satellite V/ProfileListEntry: [2020-10-14 15:07:32:567] [18965] [VERBO] [ProfileListEntry]: Event was ACTION_CANCEL
2020-10-14 15:07:32.575 18965-18965/de.sipgate.app.satellite V/ProfileListEntry: [2020-10-14 15:07:32:574] [18965] [VERBO] [ProfileListEntry]: Your time Delay was: 131 and your distance: -395.8642
2020-10-14 15:07:32.587 18965-18965/de.sipgate.app.satellite V/ProfileListEntry: [2020-10-14 15:07:32:586] [18965] [VERBO] [ProfileListEntry]: Reset and Start animation
2020-10-14 15:07:32.596 18965-18965/de.sipgate.app.satellite I/ProfileListEntry: [2020-10-14 15:07:32:595] [18965] [INFO] [ProfileListEntry]: I choose this was a click
2020-10-14 15:07:32.631 18965-18965/de.sipgate.app.satellite D/ProfileRepository: [2020-10-14 15:07:32:630] [18965] [DEBUG] [ProfileRepository]: attempt to parse 11246ada-4f80-4afb-b613-66d75f00ca29
2020-10-14 15:07:32.633 18965-18965/de.sipgate.app.satellite W/ClassMapper: No setter/field for trigger found on class de.sipgate.app.satellite.repository.Profile
2020-10-14 15:07:32.635 18965-18965/de.sipgate.app.satellite D/ProfileRepository: [2020-10-14 15:07:32:634] [18965] [DEBUG] [ProfileRepository]: attempt to parse b31906d6-5ee9-4839-ae4e-885fbc62c95f
2020-10-14 15:07:32.636 18965-18965/de.sipgate.app.satellite W/ClassMapper: No setter/field for trigger found on class de.sipgate.app.satellite.repository.Profile
2020-10-14 15:07:32.674 18965-18965/de.sipgate.app.satellite E/InputEventReceiver: Exception dispatching input event.
2020-10-14 15:07:32.674 18965-18965/de.sipgate.app.satellite D/AndroidRuntime: Shutting down VM
2020-10-14 15:07:32.686 18965-18965/de.sipgate.app.satellite E/AndroidRuntime: FATAL EXCEPTION: main
Process: de.sipgate.app.satellite, PID: 18965
java.lang.NullPointerException: Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference
at com.github.nisrulz.sensey.TouchTypeDetector$a.onScroll(SourceFile:84)
at android.view.GestureDetector.onTouchEvent(GestureDetector.java:651)
at androidx.core.view.GestureDetectorCompat$GestureDetectorCompatImplJellybeanMr2.onTouchEvent(GestureDetectorCompat.java:480)
at androidx.core.view.GestureDetectorCompat.onTouchEvent(GestureDetectorCompat.java:543)
at com.github.nisrulz.sensey.Sensey.setupDispatchTouchEvent(SourceFile:1240)
at de.sipgate.app.satellite.main.MainActivity.dispatchTouchEvent(MainActivity.kt:326)
at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:69)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:514)
at android.view.View.dispatchPointerEvent(View.java:12877)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:5771)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5535)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4983)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5036)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5002)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5157)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5010)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5214)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4983)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5036)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5002)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5010)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4983)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:7803)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:7768)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:7726)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:8007)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:202)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:191)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:7917)
at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:8061)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1092)
at android.view.Choreographer.doCallbacks(Choreographer.java:893)
at android.view.Choreographer.doFrame(Choreographer.java:806)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1078)
at android.os.Handler.handleCallback(Handler.java:907)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:216)
at android.app.ActivityThread.main(ActivityThread.java:7625)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)
2020-10-14 15:07:32.696 18965-18965/de.sipgate.app.satellite E/App$setupExceptionHandler: [2020-10-14 15:07:32:688] [18965] [ERROR] [App$setupExceptionHandler]: CRASH
java.lang.NullPointerException: Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference
at com.github.nisrulz.sensey.TouchTypeDetector$a.onScroll(SourceFile:84)
at android.view.GestureDetector.onTouchEvent(GestureDetector.java:651)
at androidx.core.view.GestureDetectorCompat$GestureDetectorCompatImplJellybeanMr2.onTouchEvent(GestureDetectorCompat.java:480)
at androidx.core.view.GestureDetectorCompat.onTouchEvent(GestureDetectorCompat.java:543)
at com.github.nisrulz.sensey.Sensey.setupDispatchTouchEvent(SourceFile:1240)
at de.sipgate.app.satellite.main.MainActivity.dispatchTouchEvent(MainActivity.kt:326)
at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:69)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:514)
at android.view.View.dispatchPointerEvent(View.java:12877)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:5771)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5535)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4983)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5036)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5002)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5157)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5010)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5214)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4983)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5036)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5002)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5010)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4983)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:7803)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:7768)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:7726)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:8007)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:202)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:191)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:7917)
at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:8061)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1092)
at android.view.Choreographer.doCallbacks(Choreographer.java:893)
at android.view.Choreographer.doFrame(Choreographer.java:806)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1078)
at android.os.Handler.handleCallback(Handler.java:907)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:216)
at android.app.ActivityThread.main(ActivityThread.java:7625)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)

Device is a HUAWEI Mate 9 - Model MHA-L29
EMUI-Version 9.1.0. - Android Version 9
Build-Nummer: 9.1.0.252(C432E7R1P8patch03)

I created a view with a on touch listener to animate the swipe and used the swipe detection of sensey. It appears during a delete animation when the user touches or lift his finger on the view animations. So it seems there is a race condition, the view is allready destroyed but there a still running some event calculation in background.

Heres a video when i try to recreate the bug:
https://drive.google.com/file/d/1-CQRggoRcw0b1GqTD1lHIIOGpMLaOhUn/view?usp=sharing

VanFanelia · 2020-10-14T13:54:23Z

My temporary fix is a big try catch around sensey's setup method. It works, but is not a reliable solution.

override fun dispatchTouchEvent(event: MotionEvent?): Boolean {
        // Setup onTouchEvent for detecting type of touch gesture
        try {
            Sensey.getInstance().setupDispatchTouchEvent(event)
        } catch (e: Exception){
            Timber.e(e, "Sensey got an exception. try to ignore it")
        }
        return super.dispatchTouchEvent(event)
    }

sebastinto · 2021-08-10T04:00:07Z

I don't know if it's related but I've gotten a couple of somewhat similar crashes. Please let me know if you'd prefer that UI open a new issue for it. See below:

java.lang.NullPointerException: 
  at com.github.nisrulz.sensey.TouchTypeDetector$a.onScroll (SourceFile:1)
  at android.view.GestureDetector.onTouchEvent (GestureDetector.java:650)
  at androidx.core.view.GestureDetectorCompat$GestureDetectorCompatImplJellybeanMr2.onTouchEvent (GestureDetectorCompat.java:480)
  at androidx.core.view.GestureDetectorCompat.onTouchEvent (GestureDetectorCompat.java:543)
  at com.github.nisrulz.sensey.TouchTypeDetector.a (SourceFile:10)
  at com.github.nisrulz.sensey.Sensey.setupDispatchTouchEvent (SourceFile:2)
  at com.tobianoapps.timerise.ui.MainActivity.dispatchTouchEvent (MainActivity.kt:146)
  at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:69)
  at com.android.internal.policy.DecorView.dispatchTouchEvent (DecorView.java:692)
  at android.view.View.dispatchPointerEvent (View.java:13721)
  at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent (ViewRootImpl.java:6197)
  at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess (ViewRootImpl.java:5975)
  at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:5424)
  at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:5477)
  at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:5443)
  at android.view.ViewRootImpl$AsyncInputStage.forward (ViewRootImpl.java:5602)
  at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:5451)
  at android.view.ViewRootImpl$AsyncInputStage.apply (ViewRootImpl.java:5659)
  at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:5424)
  at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:5477)
  at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:5443)
  at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:5451)
  at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:5424)
  at android.view.ViewRootImpl.deliverInputEvent (ViewRootImpl.java:8501)
  at android.view.ViewRootImpl.doProcessInputEvents (ViewRootImpl.java:8421)
  at android.view.ViewRootImpl.enqueueInputEvent (ViewRootImpl.java:8374)
  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent (ViewRootImpl.java:8616)
  at android.view.InputEventReceiver.dispatchInputEvent (InputEventReceiver.java:198)
  at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents (Native Method)
  at android.view.InputEventReceiver.consumeBatchedInputEvents (InputEventReceiver.java:187)
  at android.view.ViewRootImpl.doConsumeBatchedInput (ViewRootImpl.java:8575)
  at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run (ViewRootImpl.java:8643)
  at android.view.Choreographer$CallbackRecord.run (Choreographer.java:988)
  at android.view.Choreographer.doCallbacks (Choreographer.java:765)
  at android.view.Choreographer.doFrame (Choreographer.java:694)
  at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:967)
  at android.os.Handler.handleCallback (Handler.java:873)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loop (Looper.java:214)
  at android.app.ActivityThread.main (ActivityThread.java:7156)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:494)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:975)

Device was a Samsung Galaxy J7 Neo running Android 9 (SDK 28).

Any idea how I could investigate the source of this error? Thanks!

nisrulz closed this as completed Feb 28, 2017

nisrulz reopened this Nov 10, 2017

nisrulz added a commit that referenced this issue Oct 23, 2018

🚧 handle cases where a touch event can be null and result in future N…

5d66a49

…PE issues Fixes Issue #21

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference #21

Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference #21

DuarteBarbosaPT commented Feb 18, 2017 •

edited

nisrulz commented Feb 18, 2017

DuarteBarbosaPT commented Feb 18, 2017 •

edited

nisrulz commented Feb 28, 2017

DuarteBarbosaPT commented Feb 28, 2017

nisrulz commented Feb 28, 2017

Patra89 commented Nov 10, 2017

nisrulz commented Nov 10, 2017

Patra89 commented Nov 10, 2017

VanFanelia commented Oct 14, 2020 •

edited

VanFanelia commented Oct 14, 2020 •

edited

sebastinto commented Aug 10, 2021

Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference #21

Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference #21

Comments

DuarteBarbosaPT commented Feb 18, 2017 • edited

nisrulz commented Feb 18, 2017

DuarteBarbosaPT commented Feb 18, 2017 • edited

nisrulz commented Feb 28, 2017

DuarteBarbosaPT commented Feb 28, 2017

nisrulz commented Feb 28, 2017

Patra89 commented Nov 10, 2017

nisrulz commented Nov 10, 2017

Patra89 commented Nov 10, 2017

VanFanelia commented Oct 14, 2020 • edited

VanFanelia commented Oct 14, 2020 • edited

sebastinto commented Aug 10, 2021

DuarteBarbosaPT commented Feb 18, 2017 •

edited

DuarteBarbosaPT commented Feb 18, 2017 •

edited

VanFanelia commented Oct 14, 2020 •

edited

VanFanelia commented Oct 14, 2020 •

edited