Yes, they are hiding somewhere in the multi-gigabyte Android source code. At least the basic default elements. And their style formatting. And then there are t

Yes, they are hiding somewhere in the multi-gigabyte Android source code. At least the basic default elements. And their style formatting. And then there are the closed-source Google apps which at least slightly resemble the UX guidelines given on that site. And then there are the more complicated UI elements which provoked the creation of fork projects to allow for the reusability and compatibility not provided by the Google devs, like http://actionbarsherlock.com/ http://actionbarsherlock.com/ and http://viewpagerindicator.com/ http://viewpagerindicator.com/