title: How to keep android applications always be logged in state?
body: <p>Right now I am trying to create one Android application, assume it is going to be some "X" concept okay. So I am creating one login screen. What I want to do is at once if I logged in that application on my mobile, it should always be logged in whenever I try to access that application.</p>
  
  <p><em>For example our Facebook, g-mail and yahoo etc.. in our mobile phones</em></p>
  
  <p>What to do for that?</p>