Android : Android java run activity in background

I am creating a notification and I add "addAction" to my notification. I want to when I click on the "addAction", the notification remove and run another one code. How I can do this?

 Intent intent = new Intent(context, Activity.class);
                    PendingIntent pi = PendingIntent.getActivity(context, 0, intent,PendingIntent.FLAG_UPDATE_CURRENT);
.........
 .addAction(R.drawable.eye, "View", pi)

I want to run Activity.class in background, I mean to that this activity doenst open but the code in this activity run. How I can do this?