Android Status Bar Notification: make it un-clearable and have it return to app (not start a new instance)

I found a solution to this problem. I used FLAG_ONGOING_EVENT to make the notification persist. Here's the code:

  String ns = Context.NOTIFICATION_SERVICE;
  NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);

    int icon = R.drawable.mypic;
    long when = System.currentTimeMillis();
    Notification notification = new Notification(icon, tickerText, when);
    notification.flags = Notification.FLAG_ONGOING_EVENT;

    Context context = getApplicationContext();
    CharSequence contentTitle = "Title Text";
    CharSequence contentText = "Content text.";

    Intent intent = new Intent(this, MyClass.class); 
    intent.setAction("android.intent.action.MAIN"); 
    intent.addCategory("android.intent.category.LAUNCHER"); 
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, 0); 

    notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

    final int HELLO_ID = 1;
    mNotificationManager.notify(HELLO_ID, notification);

Here is the solution for the NotificationCompat.Builder

NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
        .setSmallIcon(R.drawable.ic_launcher)
        .setContentTitle("MyApp")
        .setContentText("MyMsg")
        .setOngoing(true);

More at the Google docs.