i am creating an app with android studio and i'm using mySQL.and i want to implement friends feature in my app to enable users send and recieve friend requests, i have created tables and writen the server side php code for that, i have also created an add as friend button that should do that in my app but i'm still unable to write the appropriate code for that in android.your help with this will be highly appreciated.

I'm still learning java and i don't really know how to get that done. I would really appreciate if you can show me. thank you

Of course. For one to one tuition you'll need to pay by day rate though.

Or you can buy a book, read the documentation and learn without wasting people's time.