ArithmeticException: divide by zero at ScrollingUtilities #91

betri28 · 2017-04-24T15:07:02Z

Crash in some device:

Model: LG-F160
Board: Gv
Android API: 16
Android OS: 4.1.2
Model: SM-G928C
Board: Universal7420
Android API: 24
Android OS: 7.0

Here is log stack traces:

Exception java.lang.ArithmeticException: divide by zero
com.turingtechnologies.materialscrollbar.ScrollingUtilities.scrollToPositionAtProgress (ScrollingUtilities.java:119)
com.turingtechnologies.materialscrollbar.MaterialScrollBar.onDown (MaterialScrollBar.java:701)
com.turingtechnologies.materialscrollbar.TouchScrollBar$2.onTouch (TouchScrollBar.java:72)
android.view.View.dispatchTouchEvent (View.java:7154)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2170)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1905)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2176)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:1919)
com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent (PhoneWindow.java:2196)
com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent (PhoneWindow.java:1572)
android.app.Activity.dispatchTouchEvent (Activity.java:2623)
android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:71)
android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:71)
com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent (PhoneWindow.java:2145)
android.view.View.dispatchPointerEvent (View.java:7339)
android.view.ViewRootImpl.deliverPointerEvent (ViewRootImpl.java:3207)
android.view.ViewRootImpl.deliverInputEvent (ViewRootImpl.java:3146)
android.view.ViewRootImpl.doProcessInputEvents (ViewRootImpl.java:4197)
android.view.ViewRootImpl.enqueueInputEvent (ViewRootImpl.java:4176)
android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent (ViewRootImpl.java:4268)
android.view.InputEventReceiver.dispatchInputEvent (InputEventReceiver.java:179)
android.view.InputEventReceiver.nativeConsumeBatchedInputEvents (InputEventReceiver.java)
android.view.InputEventReceiver.consumeBatchedInputEvents (InputEventReceiver.java:171)
android.view.ViewRootImpl.doConsumeBatchedInput (ViewRootImpl.java:4247)
android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run (ViewRootImpl.java:4287)
android.view.Choreographer$CallbackRecord.run (Choreographer.java:725)
android.view.Choreographer.doCallbacks (Choreographer.java:555)
android.view.Choreographer.doFrame (Choreographer.java:523)
android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:711)
android.os.Handler.handleCallback (Handler.java:615)
android.os.Handler.dispatchMessage (Handler.java:92)
android.os.Looper.loop (Looper.java:137)
android.app.ActivityThread.main (ActivityThread.java:4904)
java.lang.reflect.Method.invokeNative (Method.java)

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

turing-tech · 2017-04-24T15:42:41Z

When does this occur?

betri28 · 2017-04-25T09:19:22Z

I dont know when. I see that in crash report in firebase. I read your code in ScrollingUtilities, exception divide by zero at

layoutManager.scrollToPositionWithOffset(spanCount * exactItemPos / scrollPosState.rowHeight,
                    -(exactItemPos % scrollPosState.rowHeight));

scrollPosState.rowHeight = 0 at some potision. Can rowHeight = 0 ???

turing-tech · 2017-04-26T12:37:24Z

This may happen if materialScrollBar.recyclerView.getChildAt(0); returns null. Could I see the adapter for the recyclerView in question?

SjoerdvGestel · 2017-09-29T07:35:58Z

i'm having the same issue

turing-tech · 2017-12-31T02:42:22Z

Could I see the adapter for the recyclerView in question?

DranzerX · 2018-06-28T11:07:02Z

@turing-tech, i'm having the same issue in firebase logs too.

As adapter I use FastAdapter library by mikepenz:

protected ModelAdapter<Model, Item> itemAdapter = new ModelAdapter<>(this::toItem);
protected ItemAdapter<ProgressItem> footerAdapter = ItemAdapter.items();
protected FastAdapter<Item> fastAdapter = FastAdapter.with(Arrays.asList(itemAdapter, footerAdapter));

...

recyclerView.setAdapter(fastAdapter);
dragScrollBar.setRecyclerView(recyclerView);

Both sub-adapters can be empty.

turing-tech · 2018-07-02T04:43:34Z

@DranzerX I am still unable to replicate. I have copied the given code verbatim.

Could you give me an updated stacktrace with the latest version of the library? The one originally provided no longer matches the code.

DranzerX · 2018-07-02T13:31:02Z

@turing-tech here it is:

Fatal Exception: java.lang.ArithmeticException
divide by zero
com.turingtechnologies.materialscrollbar.ScrollingUtilities.scrollToPositionAtProgress (ScrollingUtilities.java:129)
com.turingtechnologies.materialscrollbar.MaterialScrollBar.setTouchIntercept (MaterialScrollBar.java:745)
com.turingtechnologies.materialscrollbar.DragScrollBar.setTouchIntercept (DragScrollBar.java:65)
com.turingtechnologies.materialscrollbar.DragScrollBar$$Lambda$1.onTouch (Unknown Source:4)
android.view.View.dispatchTouchEvent (View.java:11784)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2968)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2647)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2974)
android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2604)
com.android.internal.policy.DecorView.superDispatchTouchEvent (DecorView.java:549)
com.android.internal.policy.PhoneWindow.superDispatchTouchEvent (PhoneWindow.java:1953)
android.app.Activity.dispatchTouchEvent (Activity.java:3548)
android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:68)
android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:68)
com.android.internal.policy.DecorView.dispatchTouchEvent (DecorView.java:502)
android.view.View.dispatchPointerEvent (View.java:12027)
android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent (ViewRootImpl.java:5240)
android.view.ViewRootImpl$ViewPostImeInputStage.onProcess (ViewRootImpl.java:5030)
android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4544)
android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:4597)
android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:4563)
android.view.ViewRootImpl$AsyncInputStage.forward (ViewRootImpl.java:4690)
android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:4571)
android.view.ViewRootImpl$AsyncInputStage.apply (ViewRootImpl.java:4747)
android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4544)
android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:4597)
android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:4563)
android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:4571)
android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4544)
android.view.ViewRootImpl.deliverInputEvent (ViewRootImpl.java:7121)
android.view.ViewRootImpl.doProcessInputEvents (ViewRootImpl.java:7095)
android.view.ViewRootImpl.enqueueInputEvent (ViewRootImpl.java:7056)
android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent (ViewRootImpl.java:7277)
android.view.InputEventReceiver.dispatchInputEvent (InputEventReceiver.java:192)
android.os.MessageQueue.nativePollOnce (MessageQueue.java)
android.os.MessageQueue.next (MessageQueue.java:379)
android.os.Looper.loop (Looper.java:144)
android.app.ActivityThread.main (ActivityThread.java:7425)
java.lang.reflect.Method.invoke (Method.java)
com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:245)
com.android.internal.os.ZygoteInit.main (ZygoteInit.java:921)

I can't reproduce this too, but I see ~100 crashes per 20k runs in firebase crashlytics, on different devices and different versions of Android.
Maybe dragbar incorrectly stay visible when the adapter is empty and user interaction cause this problem?

turing-tech · 2018-07-06T04:01:06Z

Push the newest version and see what happens. I basically just wrapped it in a try catch, as I'm hoping it's just an edge case that happens when the view first appears. If reports of misbehaviour continue to occur I'll look into it further.

DranzerX · 2018-07-06T11:15:32Z

@turing-tech thank you, I'll try.

turing-tech added bug unable-to-replicate labels Dec 31, 2017

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ArithmeticException: divide by zero at ScrollingUtilities #91

ArithmeticException: divide by zero at ScrollingUtilities #91

betri28 commented Apr 24, 2017

turing-tech commented Apr 24, 2017

betri28 commented Apr 25, 2017 •

edited

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turing-tech commented Apr 26, 2017 •

edited

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SjoerdvGestel commented Sep 29, 2017

turing-tech commented Dec 31, 2017

DranzerX commented Jun 28, 2018

turing-tech commented Jul 2, 2018

DranzerX commented Jul 2, 2018 •

edited

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turing-tech commented Jul 6, 2018

DranzerX commented Jul 6, 2018

ArithmeticException: divide by zero at ScrollingUtilities #91

ArithmeticException: divide by zero at ScrollingUtilities #91

Comments

betri28 commented Apr 24, 2017

turing-tech commented Apr 24, 2017

betri28 commented Apr 25, 2017 • edited Loading

turing-tech commented Apr 26, 2017 • edited Loading

SjoerdvGestel commented Sep 29, 2017

turing-tech commented Dec 31, 2017

DranzerX commented Jun 28, 2018

turing-tech commented Jul 2, 2018

DranzerX commented Jul 2, 2018 • edited Loading

turing-tech commented Jul 6, 2018

DranzerX commented Jul 6, 2018

betri28 commented Apr 25, 2017 •

edited

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turing-tech commented Apr 26, 2017 •

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DranzerX commented Jul 2, 2018 •

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