How to disable unlocking screen programmatically

Question

1. I need to lock the Android phone when the user leaves a defined WiFi area
2. I need to prevent the user from unlocking the phone when he/she is out side the defined WiFi area
3. I need to unlock the phone when user is back to the WiFi area

I guess list items 1 and 3 can be done programmatically.

Is it possible to do the 2^nd item?

Answer 1

Locking can be done using this method: How to lock the screen of an android device Unlocking look here: How to display Activity when the screen is locked?

For your problem 2, i see 2 solutions

a. If the user unlocks the screen, a message is fired: check at that moment if you are in the area and if not, instantly lock again

b. create your own locksreen with no possibility to unlock yourself