title: Start activity from notification without createing activity again?
body: <p>I want to start <code>main.class</code> activity from notification pending intent
   without start the activity again. I need to open with old details (don't start <code>onCreate</code> method).</p>
  
  <p>When i press this notification <code>main.class</code> starts but the activity gets created again.
   This is my notification:</p>
  
  <pre><code>Context context = Main.this;
  Intent i = new Intent(context,Main.class);
  PendingIntent pen = PendingIntent.getActivity(context,0,i,0);
  </code></pre>
  
  <p>How can I open main.class without starting the activity again?
  What need to add <code>onCreate()</code> or notification?!</p>