Android locked fullscreen

Question

Is it possible to lock fullscreen on Android? Basically hide toasts, hide home/back/switch, hide notification bar, make it so swiping from bottom or top doesn\'t work.

Answer 1

One way to do it is to use an overlay which requires SYSTEM_ALERT_WINDOW permission, while setting up the app with/as a service. See the prior answer with code example by yoah at Disable home button in android toddler app?