Android Developer's UI Kits Sample

Hey Guys :

 Today i am going  to share one android official link from there you can download  some  sample icons and swatches. You guys already know android is an Open source . so don't worry about it  no need pay for anything.
this one is not only for android developers ,Photoshop and illustrator  lovers also can check this link.
                           
                                 https://developer.android.com/design/downloads/index.html