title: How to Implement draggable map like uber android, Update with change location
body: <p>How to implement draggable map like uber? I am using Google maps v2. Actually i got the solution referring  <a href="https://stackoverflow.com/questions/21652902/how-to-attach-a-flexible-marker-on-map-something-like-uber-and-lyft">this post</a> and sharing my complete solution here</p>