title: How to apply user to user payment in android social media app?
body: <p>Im developing an android app with android studio and Java.The app will work like this:
  user1 choose an item that user2 sells , user1 pays to user2 the amount of money.
  I tried to read how to do it and didn’t find any solution .
  What do i need to read or use to apply user to user payment in my Android App with Java and Android studio? The payment will be in Israel.
  ——
  in addition i would like to get some
  Profit, how do i define it ?</p>
  <p>Thank you very much.</p>