Insert a unity scene inside a standard android app

hello,
I'm making an android app with various activity. In one of these activity I have a button and I want open a 3d scene when it's clicked. My questions are:

1 is this possible?
2 the users have to install any unity plugin or it starts normally?
3 can I pass variables from the activity to the unity scene?

Thanks a lot

 

Hello alfox, I'm in the same situation than you.
Still I'm investigating, I tried with a couple of methods but none has worked.
I subscribe your question waiting an answer, I hope comes soon.

 

just to be sure, do you mean to link a non-unity app to a specific scene in a unity app?

 

I want export the unity game as an android project, import it on android studio inside of my android app.
Then, from the main activity, open another activity with the unity game inside.

 

2021, and still no answer..