Android App - Notification Icon

I would like to create an Android App which is always available on the Android. I'd like to have an icon on the status bar that launches my app when you click it. It do NOT want to have a notification icon, that you have the list the notifications, THEN select my specific app. I want to have the initial click launch my app or have the app launch on a specific key press, menu option etc. I want the user always one click away from my app. ## Deliverables I just need the source code to do this.