displayMsgs method for the NFC Reader tutorial

DisplayMsgs.java

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());
}