Linking header position to an empty entry in the recyclerView,
instead of calculating the vertical scroll position. This
allows the header to be in sync with the recyclerView scroll and
item animations
Other simplifications:
> Moving top collapse handle out of header view (it doesn't scroll)
> Removing background clipping logic from full-sheet
> Moving tab bar inside the header view
Bug: 196464142
Test: Verified on device
Change-Id: Iae5a0ae9af7ce258e1b391b8e85c5c270fe56197
Show education dialog on WidgetsFullSheet.
-Have a button in widget education dialog to intent into PixelTips apps.
-Make sure arrow tip view shows after dismissing education dialog on
WidgetsFullSheet if there is a widget to show it on.
-Update colors and layout for arrow tips.
Test: Tested manually
Bug: 185354491
Change-Id: I5cbdd02fc4f19a49a42dac4451b071e3d604747f
=> dialogCornerRadius introduced in v28; this is enforced by errorprone build
Bug: 185623950
Test: manual
Change-Id: I8913cc4645a2f5a26f9b98226ba66f8a8b27c77c
Jon Miranda