Android Question WindowFocusChanged

[hanyelmehy]

when use WindowFocusChanged event ,its fired with Focused=false
when opem msgbox or show panel on activity
i want to detect only if activity with any of its compnenet are not on the screen
Note : the idea that i show exam tp user and i want to prevent hime from open any other app or go away from exam

 

[drgottjr]

you can't stop the user from tapping the home button, which tap cannot be intercepted by you.

 

[Erel]

The only way to do it is with: https://www.b4x.com/android/forum/threads/device-owner-tasklock-kiosk-apps-2017.81765/#content