title: Life cycle of Android Activity after pressing Back button
body: <p>I am little confused between the life cycle of two activities.</p>
  
  <p>Suppose I have Activity A and Activity B.</p>
  
  <p>B is called From A i.e <code>A ----&gt;  B</code>.</p>
  
  <p>Now currently <code>B</code> is on the screen and I pressed back button. Here I want know:- is there any memory still available for <code>B</code>(Active) or <code>B</code>'s memory is flushed(Inactive).</p>