Build a lockscreen with a Pin access.

I need a lockscreen built. I would prefer if you used Android studio as thats what I am building in. The lock screen needs to just have a pin entry. I also want the lockscreen to go away on its own after a set amount of time or by punching in the pin. 1) Build a simple lockscreen. 2) Settings page for lockscreen pin set up and to set the timer for the lockscreen. the timer could just be a wheel. set it for hours and minutes. 3) The lock screen is going to be actuated by an alarm app that I have already built so just have the function set on that basis.