question

We opened up NFC in Reader Writer mode on some platforms listed in https://docs.clover.com/clover-platform/docs/building-with-android-nfc . We don't have sample code, but we have tried to maintain functionality with regular Android NFC APIs so you can look up NFC app samples on the web and try them out. I will post snippets of what is essential to run an app using Android NFC on Clover devices:

Some APIs like enableReaderMode are not supported. The Activity that is reading/writing the data HAS to call enableForegroundDispatch and disableForegroundDispatch in onResume and onPause to turn on/off NFC.

public class MainActivity extends Activity {
                
    private NfcAdapter mAdapter;
    private PendingIntent mPendingIntent;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mAdapter = NfcAdapter.getDefaultAdapter(this);
    if (mAdapter == null) {
        showMessage("Error", "No NFC found on device");
        finish();
        return;
    }

    mPendingIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);

}

@Override
protected void onResume() {
    super.onResume();
    if (mAdapter != null) {
        mAdapter.enableForegroundDispatch(this, mPendingIntent, null, null);
    }
}

@Override
protected void onPause() {
    super.onPause();
    if (mAdapter != null) {
        mAdapter.disableForegroundDispatch(this);
    }
}

@Override
public void onNewIntent(Intent intent) {
    setIntent(intent);
String action = intent.getAction();
if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(action)
        || NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)
        || NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action)) {
    /// Read/write data to card here

}
}

}

Hope this somewhat helps for now. We will try to post samples when we have something that is easily consumable for developers.