tree edbc6ae2b96362d9fb3bf0cbd9c442b55e86d771
parent be030126fe91341788a29d16c10cf523ea566862
author Phil Weaver <pweaver@google.com> 1494525277 -0700
committer Phil Weaver <pweaver@google.com> 1494610853 -0700

Add null check to a11y call.

No good will come from posting that a null View has
changed. Adding a null check so the failure will happen
when the bad call is made, rather than later when we
try to act on it in a handler.

Bug: 38122973
Test: Ran accessibility unit and cts tests.
Change-Id: I1e9aaf2a18180fcdfd0fbc0e5b716eb96446af33