NullPointerException when expanding item with autoscroll

[ukevgen]

Hi guys! eu.davidea:flexible-adapter:5.0.0-rc2
Fatal Exception: java.lang.NullPointerException
at eu.davidea.flexibleadapter.SelectableAdapter.getFlexibleLayoutManager(SelectableAdapter.java:216)
at eu.davidea.flexibleadapter.FlexibleAdapter$13.handleMessage(FlexibleAdapter.java:5020)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4950)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:997)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:764)
at dalvik.system.NativeStart.main(NativeStart.java)

[ukevgen]

What can it be?

[davideas]

@ukevgen, investigated that you are making an expand operation, and the recyclerView is null so that cannot retrieve the layoutmanager to calculate the autoscroll, but is not supposed to be null! what exactly where you doing before or for the expand?

Next time describe the situation and the steps to reproduce it.

[ukevgen]

@davideas Unfortunately I have only crash from fabric (

[davideas]

@ukevgen, ah ok not very helpful, look:
I might check the nullity of RV, but lot of functions depends by it: autoscroll, scroll animations, span count, show headers and sticky headers, the smooth scroll. It means that RV can't be null otherwise it is an oxymoron, these events cannot exist without RV.

The trigger is in this line: FlexibleAdapter.java:5020 of RC2 version, which comes from an expand operation, I will do the check of nullity only in that point.
I try to give an hypothesis from a combination of factors: maybe the user expanded an item, phone was quite slow in that moment and the handler, that executes the scroll in post with 150ms delay, found the RV null caused by a closure of the activity or similar. Sure that is rare.