title: Google Maps android get longitude-latitude by moving a marker in the map
body: <p>Hi i am developping an android application in which i need the user to choose a location by mouving a parker so i can get the informations i need <a href="http://ctrlq.org/maps/address/" rel="noreferrer">exactly like this</a> but in an android application.
  I did some researchs but i'm still new so i couldn't find anything close to this.
  Can anyone point me to the right direction ?</p>
  
  <p>What i need to do is to create a mouving cursor in a simple google map that could give me long+lat data. all i coud do is put some static locations in my map.   </p>