how to create a navigation bar like pulse android app

I was trying to figure out how to create navigation bar like pulse android app see the screen shot

is it a navigation bar or a tabbed bar or something else?. How can i create something like this? Also when i clicks on any of the option does it goes to a new activity??

Thanks Pranay

As I see in the image it's looks like this to me: viewFlow.Hope it's help!

This looks more like ViewPager as used in Google+ app. It should be available in Honeycomb and also in the Compatibility library.