title: How to call web service in background?
body: <p>I am posting images using JSON. Whenever I take a picture i have to call the webservice.
  This webservice call may take some time. I dont want to use Thread nor Asynchronous Task for this. 
  I want to call the Webservice in background and able to perform operations in foreground(button click, entering some data in edittext etc).</p>
  
  <p>I guess this can be achieved by using Service. Please provide me some tutorials for this. </p>
  
  <p>Is there any way?</p>
  
  <p>Thanks in advance.</p>