GridLayoutManager: fix bug smoothscroller gets interrupted
Vertical scroll in Videos app is janky.
During VerticalGridView scroll pass it appends a row and layout
the row, the row layout might request focus on a child, that causes
a onRequestChildFocus() call back into the top level VerticalGridView.
In that case high level verticalGridView should not start another
scrollToView() animation. onRequestChildFocus() is supposed to handle
user's interaction only.
The bug is difficult to test, both RV.smoothScrollBy() and LinearSmoothScroller
uses the same scroll state, calling RV.smoothScrollBy() does not
stop linearSmoothScroller. Added a override class to intercept calls
on RV.smoothScrollBy().
Bug: 19846906
Change-Id: Ica857f443e41f14710b2bf177eafba30403817c7
10 files changed