IssueTracker

This isn't fixed in alpha 6 :(. It's easily reproducible by starting a drag with one finger and then tapping somewhere else (think back button) which calls clearSelection().

Comment from https://b.corp.google.com/issues/128054552#comment9

Fix is in the works. Until then, a workaround is to avoid calling SelectionTracker#clearSelection while a gesture or mouse-band selection operation is in progress. Such a condition is likely not reflective of user intent (given the ongoing stream of selection operation), but reflective of a stray tap.

State can be monitored using OperationMonitor:
https://developer.android.com/reference/androidx/recyclerview/selection/OperationMonitor.OnChangeListener.html

BTW, working on a fix for this (general improvement to state management). My unassigning this issue from me should not be construed as lack of attention to the matter. I just manage issues by hotlist (rather than ownership).

Rolling all state-related crash reports up into a single tracking bug.

Fixed in upcoming beta01 release.

Project: platform/frameworks/support
Branch: androidx-master-dev

commit c0540c10cc7ea5027d3fc3b22024de7e66c41a9d
Author: Yigit Boyar <yboyar@google.com>
Date:   Tue Jun 02 18:38:41 2020

    ConcatAdapter API improvements
   
    Accept extends bound in constructor arguments
    Make Config & Config.Builder final
   
    Bug: 158019211
    Test: existing tests
    Change-Id: I60bc0da651935b35a4dd64a0117aae532a278452

M       recyclerview/recyclerview/api/1.2.0-alpha04.txt
M       recyclerview/recyclerview/api/current.txt
M       recyclerview/recyclerview/api/public_plus_experimental_1.2.0-alpha04.txt
M       recyclerview/recyclerview/api/public_plus_experimental_current.txt
M       recyclerview/recyclerview/api/restricted_1.2.0-alpha04.txt
M       recyclerview/recyclerview/api/restricted_current.txt
M       recyclerview/recyclerview/src/main/java/androidx/recyclerview/widget/ConcatAdapter.java

https://android-review.googlesource.com/1321893