Set card background using ColorStateList.

This allows Support7Demos activity to show CardView support for ColorStateList.
This sample activity already contains R.color.card_selector and now it sets it
fully.

Bug: 26791833
Change-Id: I481d510501596f0d3a59cb194a7056a20ca9b72c
1 file changed
tree: 15e7af8cbb0d58d316d6a6d9a86a348f14d55f58
  1. samples/