Android onTouch error

[meeh]

java.lang.NullPointerException: 
  at android.support.v4.view.ViewPager.fakeDragBy (ViewPager.java:2626)
  at com.viewpagerindicator.TitlePageIndicator.onTouchEvent (TitlePageIndicator.java:573)
  at android.view.View.dispatchTouchEvent (View.java:12540)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3181)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:3159)
  at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2844)
  at com.android.internal.policy.DecorView.superDispatchTouchEvent (DecorView.java:601)
  at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent (PhoneWindow.java:1871)
  at android.app.Activity.dispatchTouchEvent (Activity.java:3384)
  at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:69)
  at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:69)
  at com.android.internal.policy.DecorView.dispatchTouchEvent (DecorView.java:563)
  at android.view.View.dispatchPointerEvent (View.java:12788)
  at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent (ViewRootImpl.java:5668)
  at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess (ViewRootImpl.java:5463)
  at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4956)
  at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:5009)
  at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:4975)
  at android.view.ViewRootImpl$AsyncInputStage.forward (ViewRootImpl.java:5112)
  at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:4983)
  at android.view.ViewRootImpl$AsyncInputStage.apply (ViewRootImpl.java:5169)
  at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4956)
  at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:5009)
  at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:4975)
  at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:4983)
  at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4956)
  at android.view.ViewRootImpl.deliverInputEvent (ViewRootImpl.java:7734)
  at android.view.ViewRootImpl.doProcessInputEvents (ViewRootImpl.java:7674)
  at android.view.ViewRootImpl.enqueueInputEvent (ViewRootImpl.java:7635)
  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent (ViewRootImpl.java:7845)
  at android.view.InputEventReceiver.dispatchInputEvent (InputEventReceiver.java:197)
  at android.os.MessageQueue.nativePollOnce (Native Method)
  at android.os.MessageQueue.next (MessageQueue.java:325)
  at android.os.Looper.loop (Looper.java:142)
  at android.app.ActivityThread.main (ActivityThread.java:6944)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:327)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1374)

[zzz]

no i2p classes in the trace, but both our TunnelsContainer? and AddressbookContainer? reference TitlePageIndicator?. Let's try to reproduce it

[zzz]

​https://github.com/JakeWharton/ViewPagerIndicator/blob/master/library/src/com/viewpagerindicator/TitlePageIndicator.java

[zzz]

passing an int so the problem isn't that call.

ViewPagerIndicator? library last changed Sept. 12, 2012, with release 2.4.1.
135 open issues including lots of NPEs.
It's been forked 4200+ times

looks like in our build.gradle we're on this fork and version 2.4.4
​https://github.com/InkApplications/Android-ViewPagerIndicator/releases
last release 2.4.4 June 30 2016 and only one issue

sample source, line numbers don't match:
​https://android.googlesource.com/platform/frameworks/support/+/refs/tags/android-7.0.0_r36/v4/java/android/support/v4/view/ViewPager.java

[zzz]

here's the right source, with NPE at line 2626, mVelocityAdapter is null,
but beginFakeDrag() should have set it non-null, so still a mystery but getting closer

​http://androidxref.com/9.0.0_r3/xref/frameworks/support/viewpager/src/main/java/androidx/viewpager/widget/ViewPager.java#2585

[zzz]

Fixed as suggested in
Nov. 20 2013 comment at
​https://github.com/JakeWharton/ViewPagerIndicator/pull/257

reproduced and then verified fixed by idk

in 857e813c6899e52d33a0763239219c5b83c580e9 to be 0.9.40