Want to create Layout
I want to create a layout something like shown in image below can anyone please tell me what is this component shown over xml layout and how to us it.

![enter image description here][1]


  [1]: http://i.stack.imgur.com/i3kTP.png
Want to create Layout
===

I want to create a layout something like shown in image below can anyone please tell me what is this component shown over xml layout and how to us it.

![enter image description here][1]


  [1]: http://i.stack.imgur.com/i3kTP.png