java - How to enable NFC-based readwrite communication between two Android 14 devices - Stack Overflow

I'm developing an Android app to enable NFC-based communication between two Android 14 devices. The goal is to read and write NDEF messages directly between the devices. I've implemented a method to write NDEF messages to NFC tags, as shown in the code snippet below.

private void writeNdefMessage(Tag tag, String message) {
        Ndef ndef = Ndef.get(tag);
        NdefRecord record = NdefRecord.createTextRecord("en", message);
        NdefMessage ndefMessage = new NdefMessage(new NdefRecord[]{record});

        try {
            if (ndef != null) {
                ndef.connect();
                if (!ndef.isWritable()) {
                    runOnUiThread(() -> Toast.makeText(this, "This tag is read-only.", Toast.LENGTH_SHORT).show());
                    return;
                }
                ndef.writeNdefMessage(ndefMessage);
                runOnUiThread(() -> Toast.makeText(this, "Message written to the tag!", Toast.LENGTH_SHORT).show());
            } else {
                // Attempt to format the tag
                if (formatTag(tag, ndefMessage)) {
                    runOnUiThread(() -> Toast.makeText(this, "Tag formatted and message written!", Toast.LENGTH_SHORT).show());
                } else {
                    runOnUiThread(() -> Toast.makeText(this, "This tag does not support NDEF and cannot be formatted.", Toast.LENGTH_SHORT).show());
                }
            }
        } catch (IOException | FormatException e) {
            runOnUiThread(() -> Toast.makeText(this, "Write failed: " + e.getMessage(), Toast.LENGTH_SHORT).show());
        } finally {
            try {
                if (ndef != null) ndef.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        playBeep();
    }