Is it possible to use Android Things on a tablet? My project needs Android Things, but I can't use Raspberry for it, because it will be expensive.
If not, what do I do to a "normal" Android (Android for tablets/phones) to have only my application, don't have notification bar and don't close my app with the life cycle? (like on Android Things)
It's possible to use Android things on a tablet?
No. Here is the list of supported platforms.
If not, what do I do to the "normal Android".
Develop a kiosk mode app or, if it's not enough for you, customize Android source code.