Android: How to send data (a string value) to another device using NFC?

Question

I wanted to understand NFC architecture in AOSP code. Primarily a block diagram interaction between NFC hardware with Nfc application in /packages/Nfc over JNI. I can see that the JNI portion of Nfc app is trying to connect via some socket.

Not able to find out the other side of this socket connection. I will really appreciate if someone can point me to any document or blog.

Answer 1

You can start by referring code here.

First, you need permission for NFC. Then you have to add tech-list (frequencies of NFC).

Then, the below line can receive the Nfc adapter data.

Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);

Hope this helps!