question: private void updatePlayingAlbum ( String albumRef ) { View view = mAlbumToViewMap . get ( albumRef ) ; ImageView ivPlayAlbum ; if ( mPreviousAlbumGroup != null ) { ivPlayAlbum = ( ImageView ) mPreviousAlbumGroup . findViewById ( R . id . ivPlayAlbum ) ; PlayPauseDrawable drawable = ( PlayPauseDrawable ) ivPlayAlbum . getDrawable ( ) ; drawable . setShape ( PlayPauseDrawable . SHAPE_PLAY ) ; } if ( view != null ) { ivPlayAlbum = ( ImageView ) view . findViewById ( R . id . ivPlayAlbum ) ; PlayPauseDrawable drawable = ( PlayPauseDrawable ) ivPlayAlbum . getDrawable ( ) ; drawable . setShape ( PlayPauseDrawable . SHAPE_STOP ) ; } mPreviousAlbumGroup = view ; }
target:  Updates the current playing album