Android Question AlarmClock app(lock & off screen)


Licensed User
Longtime User
hi all
(first of all excuse me for my bad english)
i wants to crate an AlarmClock app with my own design
i dont have any problem to set time and show alarm , notifications or etc....
but i wants to show my Alram even phone is lock and screen is of!
how i can show my especial activity when phone is lock on?
and how i can Turn ON the screen when it's off?
This can be done and we have lot's of app like this but i don't know how it can be done in basic
thanks for your help ;)