How to auth user in android app? via intent or other

Hello everyone!
I have created an Auth redirect service. I can get an access token.
But now how can I authorize a user in the android app and start creating meetings? Please drop the link to the resource how can I authorize a user in the android application and get his userId

@karikov.alist.ru , if your user is on mobile device, you might want to take alook at device based oauth (PKCE flow) OAuth for user authorized apps

Once you have the access token, you can call the REST API to get the user’s ID