如何创建Android ICS拖放阴影效果？

Question

I would like to create icon shadow/outline effect in my app, as presented on Google's design guidelines page . The effect I would like to reach:

Has anyone noticed the part of code which dynamically creates a mask, and then creates a outline like this above?

Answer 1

I think that I've found a solution. Previously the search engine didn't return any satisfying results (because I typed 'shadow', not 'outline'), and I made duplicate of this question .