title: Clicking on Notification is not starting intended activity?
body: <p>I am using GCM in my application and also using NotificationManager to Create a Notification whenever GCM message is received.Till now everything is working perfectly and GCM message is showing correctly in Notification area, but when I click on the notification it should start an activity of my application which will display the message detail which is not happening. Every-time I click on notification it does not start any activity and it remains as is.My code for creating Notification is :</p>
  
  <pre><code>private void sendNotification(String msg) {
          SharedPreferences prefs = getSharedPreferences(
                  DataAccessServer.PREFS_NAME, MODE_PRIVATE);
          mNotificationManager = (NotificationManager) this
                  .getSystemService(Context.NOTIFICATION_SERVICE);
          Intent intent = new Intent(this, WarningDetails.class);
          Bundle bundle = new Bundle();
          bundle.putString("warning", msg);
          bundle.putInt("warningId", NOTIFICATION_ID);
          intent.putExtras(bundle);
          // The stack builder object will contain an artificial back stack for
          // the
          // started Activity.
          // This ensures that navigating backward from the Activity leads out of
          // your application to the Home screen.
          TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
          // Adds the back stack for the Intent (but not the Intent itself)
          stackBuilder.addParentStack(WarningDetails.class);
          // Adds the Intent that starts the Activity to the top of the stack
          stackBuilder.addNextIntent(intent);
  
          PendingIntent contentIntent = stackBuilder.getPendingIntent(0,
                  PendingIntent.FLAG_UPDATE_CURRENT);
  
          NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
                  this).setSmallIcon(R.drawable.weather_alert_notification)
                  .setContentTitle("Weather Notification")
                  .setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
                  .setContentText(msg);
          String selectedSound = prefs.getString("selectedSound", "");
          if (!selectedSound.equals("")) {
              Uri alarmSound = Uri.parse(selectedSound);
              mBuilder.setSound(alarmSound);
  
          } else {
              Uri alarmSound = RingtoneManager
                      .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
              mBuilder.setSound(alarmSound);
          }
  
          if (prefs.getBoolean("isVibrateOn", false)) {
              long[] pattern = { 500, 500, 500, 500, 500, 500, 500, 500, 500 };
              mBuilder.setVibrate(pattern);
          }
  
          mBuilder.setContentIntent(contentIntent);
          mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
      }
  </code></pre>
  
  <p>I updated my code to support <code>Preserving Navigation when Starting an Activity</code> just like it happens in Gmail application using the Android developers website since then it stopped working.Someone Please guide me what I am missing or doing wrong in this code.</p>