title: Android back Stack on Activity
body: <p>I'm a new Android developer, I have a simple question :</p>
  
  <p>for moving from one activity to another I use :</p>
  
  <pre><code> Intent i = new Intent(FirstActivity.this, SecondActivity.class);
   this.startActivity(i);
  </code></pre>
  
  <p>and to go back from the first activity to the second Activity I use :</p>
  
  <pre><code> this.finish();
   overridePendingTransition(0, 0);
  </code></pre>
  
  <p>I just finish the activity, my problem is that I'm launching the activity and closing it everytime. I want to prevent this, and just keep the Second Activity in the background. </p>
  
  <p>Can you clarify on how to do this ? I'm just using this, but it doesn't make sense for me </p>
  
  <pre><code>FLAG_ACTIVITY_NEW_TASK
  </code></pre>
  
  <p>But how to prevent closing the second activity ?</p>