if we want to provide material design's Date/Time picker or any other feature support for previous api levels in our Android project, how it can be achieved? I read it some where that we need to port the source out of api 21, but i have no idea how to port source and the source to look.  

Google Calender app is using the same kind of Time and Date pickers.
[link](http://www.blogcdn.com/www.engadget.com/media/2013/05/colordatetime.png) im using the same pickers in Jelly Bean.