Where can I find the sources of android applications with authorization?

Question

Android

I want to understand how the system of communication between the android application and the site works, I understand that this is all done on api, but I don’t know how it should be done, maybe there is a source code for a mini site and an android application for communication somewhere in order to understand how authorization / registration will work, I was looking for lessons and tutorials and without success, please if anyone knows where to download, you can give a link

Answer 1

Did you look for OAuth examples? like it should fit.