tree 07e42c63df3a7acd15e48b861ef1d2eed9343290
parent 16b02d489932542812b84bc8bb1771eb266b47ed
author Hall Liu <hallliu@google.com> 1602017541 -0700
committer Hall Liu <hallliu@google.com> 1602019046 -0700

Expose the HomeVisibilityListener API

Rename HomeVisibilityObserver to HomeVisibilityListener and expose it as
module-only API. This listener is used by the SIM toolkit to detect when
the home screen is visible.

Also fix some bugs in the original implementation that were uncovered
during CTS writing.

Fixes: 170226810
Test: atest ActivityManagerTest#testHomeVisibilityListener
Change-Id: I5d99f2bad144711d7135cc800921abf01df6235d