OpenIntents

Yesterday, Android 2.3 has been announced and it includes support for NFC Tag reading. The integration is quite easy because the NFC controller just starts the intent NfcAdapter.ACTION_TAG_DISCOVERED as soon as a tag is discovered.

In order to handle a discovered tag, add an intent filter for this action "android.nfc.action.TAG_DISCOVERED" and read the two extras from the intent like the following in your activity:

byte[] tagId = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);
NdefMessage[] msgs = (NdefMessage[]) intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);

Looking forward to new apps supporting NFC, please post them at http://open-android-apps.appspot.com if you like to share!