Creating Persistent Search Bar In Android

I want a search box which sits on top of the layout like this: http://www.google.com/design/spec/patterns/search.html#search-in-app-search I do not know whether I have to build it

Solution 1:

there is a library called persisten search which look likes google now, google play etc. have a look at it: https://github.com/Quinny898/PersistentSearch