How to run a special program instead of the desktop on android at startup?

Question

Android

I want to understand whether it is possible to make the following application for android: a person turns on the tablet, the android starts, but at startup, instead of the user / desktop selection screen, the application immediately starts showing pictures from the folder.
In this case, this application will block all buttons, but will have a special area when clicked, which will show the login window.

Answer 1

Whatever instead of or ahead of the launcher, you will most likely have to do your own firmware assembly.
It is cheaper and faster to write a launcher or a screenlock with the necessary functionality.
In extreme cases, a regular application that starts after loading the OS

Answer 2

looks like a virus, not an app.
you need to write an application - launcher a lot of examples on this topic

Answer 3

there is such a thing) the idea is to turn the tablet into a photo frame with wifi support, the
pictures will be uploaded via wifi

Answer 4

SureLock in "one app always running" mode. I think this is what you need =)