resolveIntent method for the NFC Reader tutorial on the SSaurel's Channel

ResolveIntent.java

@Override
protected void onNewIntent(Intent intent) {
    setIntent(intent);
    resolveIntent(intent);
}

private void resolveIntent(Intent intent) {
    String action = intent.getAction();

    if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(action)
            || NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)
            || NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action)) {
        Parcelable[] rawMsgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
        NdefMessage[] msgs;

        if (rawMsgs != null) {
            msgs = new NdefMessage[rawMsgs.length];

            for (int i = 0; i < rawMsgs.length; i++) {
                msgs[i] = (NdefMessage) rawMsgs[i];
            }

        } else {
            byte[] empty = new byte[0];
            byte[] id = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);
            Tag tag = (Tag) intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
            byte[] payload = dumpTagData(tag).getBytes();
            NdefRecord record = new NdefRecord(NdefRecord.TNF_UNKNOWN, empty, id, payload);
            NdefMessage msg = new NdefMessage(new NdefRecord[] {record});
            msgs = new NdefMessage[] {msg};
        }

        displayMsgs(msgs);
    }
}

private void displayMsgs(NdefMessage[] msgs) {
    if (msgs == null || msgs.length == 0)
        return;

    StringBuilder builder = new StringBuilder();
    List<ParsedNdefRecord> records = NdefMessageParser.parse(msgs[0]);
    final int size = records.size();

    for (int i = 0; i < size; i++) {
        ParsedNdefRecord record = records.get(i);
        String str = record.str();
        builder.append(str).append("\n");
    }

    text.setText(builder.toString());
}