commit d9cfbaf3b5a1fa81b82aaeafab31a98bf9a7c57a
author Raff Tsai <rafftsai@google.com> Tue Sep 17 23:47:07 2019 +0800
committer Raff Tsai <rafftsai@google.com> Wed Sep 18 11:40:46 2019 +0800
tree b7501cb32915e11dc63beda2887973108f39c6dd
parent a9177ca0eb727929e38c82d52eac87cf022e2cbf

Fix volume panel hang

SliceLiveData changed its behavior, if slice is null, it will not
notify LiveData observer but callback to onErrorListener. We only
reduce PanelSlicesLoaderCountdownLatch in LiveData observer.
Therefore the error slice caused PanelSlicesLoaderCountdownLatch
never count to 0, the UI was not displayed. It is solved by reducing
PanelSlicesLoaderCountdownLatch in onErrorListener and also not return
null in MediaOutputIndicatorSlice.

Test: manual
Fixes: 141084035
Change-Id: Iddb2dbdc0e0d2ac3e26071960bb667937f181121