title: Check if location is in bounds
body: <p>I am using <code>Android studio</code> and trying to create an application which uses <code>Google Maps V2</code>. I have got the map running well with the <code>API Key</code>.
  I will be adding a couple of <code>markers</code> to the <code>map</code>. I want to add the <code>markers</code> in such a way that they will add only if they are in a specific <code>radius</code> of the users current <code>location</code>. Is there any method to check if the <code>marker</code> comes in the <code>radius</code> or not? And how do we add the <code>radius</code> for the map?</p>