title: how to keep user sign in for app life?
body: <p>i'm having problem to keep the user sign in for all my app life, the "sign in" is on the main activity, when start another activity i'm still loged in and i can upload data to quickblox, but after i start another activity and then start again the activy that i uploaded data to quickblox, i get error when try to upload data: "token is required"... </p>
  
  <p>Edit:</p>
  
  <pre><code> QBSettings.getInstance().fastConfigInit(String.valueOf(APP_ID), AUTH_KEY, AUTH_SECRET);
      QBUser user = new QBUser("login", "password");
      QBAuth.createSession(user, this, QBQueries.SIGN_IN);
  </code></pre>