title: How to fetch data usage report for ALL UID's using the new NetworkStatsManager class
body: <p>I am building a data manager app, which requires per-app data usage report over mobile and wifi interfaces.</p>
  
  <p>While trying to use the method "NetworkStatsManager.querySummary", I only get usage reports for some of the UID's, but not all. While the API <a href="https://developer.android.com/reference/android/app/usage/NetworkStatsManager.html" rel="nofollow">documentation</a> for the method  does say </p>
  
  <blockquote>
    <p>Result filtered to include only uids belonging to calling user </p>
  </blockquote>
  
  <p>Its not clear to me as to which UID's belong to the calling user and which do not. Please help me understand the difference and how I can obtain data usage reports for all UID's using this new "NetworkStatsManager" class.</p>