Facebook like button functionality
<p>I am developing facebook app,I can able to get all the data of news feed.But I want to get the same functionality as android faceboook "like" has.I can able to like and unlike the post,but cant change the likes count and (like to unlike) and (unlike to like) as fast as android facebook.</p>

<p>I would like to know how they can able to do within fractions. </p>
