title: How to programatically show data usage of all applications?
body: <p>I am trying to find out the data usage in Android on a per-application basis. Something like
   <a href="http://kschang.hubpages.com/hub/Data-Usage-Monitor-Apps-and-Widgets-for-Android-Phones-and-Devices#slide4646427" rel="nofollow noreferrer">http://kschang.hubpages.com/hub/Data-Usage-Monitor-Apps-and-Widgets-for-Android-Phones-and-Devices#slide4646427</a></p>
  
  <p>I've searched many links and posts on Stackoverflow, but none of them helped me.</p>
  
  <p>I've tried to search API for usage data in Android but didn't find any thing to solve my problem.</p>
  
  <p>Now the question is how to know, how much data used by each application.
  Actually I need a solution which gives data usage of applications in a given time period i.e. in each month.</p>