In this video. I've talked about compiling Tor in Android and how to connect to Tor Hidden Services using it. The video contains the details. Any question or comment can be leaved here or you can contact me from my web site:
https://mstajbakhsh.ir
The full source code of the repository is available at:
https://github.com/mirsamantajbakhsh/tor-android/tree/HS_Connect