title: PendingIntent on Notification foreground service android
body: <p>I have an activity in my app. When i click one option, start running my service foreground with a notification like this:</p>
  
  <pre><code>PendingIntent pi = PendingIntent.getActivity(getApplicationContext(), 0,
              new Intent(getApplicationContext(), Radio.class),
              PendingIntent.FLAG_UPDATE_CURRENT);
  
      Notification  notification = new Notification();
      notification.tickerText = "Connecting RadiO!.. Wait..";
      notification.icon = R.drawable.ic_launcher;
      notification.flags |= Notification.FLAG_ONGOING_EVENT;
      notification.setLatestEventInfo(getApplicationContext(), "radiO!",
              "Playing: " + songName, pi);
      startForeground(1, notification);
  </code></pre>
  
  <p>Then, still running my activity, I click on my notification and I opened it without closing the previous activity. I must not have the same activity twice.</p>