The 2-LinearLayout system the demo used to have had its quirks, but was
just plain awful once it ran on a smaller screen. The new GridLayout
makes for a much better experience.
Change-Id: Ie3fd65e125c82da8b0079f61bd91bf844dea9b03
When a container's child count goes to zero, it may report a measurement size
of zero. This affects LayoutTransition's fading-out of target views
because they may get clipped out by a layout that got sized to 0 because it
thinks it has no children. The workaround is to tell the layout to size itself
either with some minimal size (in the case of the FixedGridLayout used by some
demos) or with match_parent in some cases to ensure that the layout always has
some nonzero size.
Change-Id: I908e64d4fb054928af277a021a328e94477c9c83
