Android bringing Activity to foreground

To bring activity to the foreground, Below simple code can be done. 

Intent notificationIntent = new Intent(this, MainActivity.class);

notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

try

{

    pendingIntent.send();

}

catch (CanceledException e)

{

    e.printStackTrace();

}

References:

http://stackoverflow.com/questions/12074980/bring-application-to-front-after-user-clicks-on-home-button