NFC

  对于Android 4.0 SDK中提供的Beam例子，对于NFC开发来说的确是一个不错的模板。对于了解NFC的NDEF消息处理过程不妨看下面的代码。 public class Beam extends Activity implements CreateNdefMessageCallback,        OnNdefPushCompleteCallback {    NfcAdapter mNfcAdapter;    TextView mInfoText;    private static final int MESSAGE_SENT = 1;     @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);         mInfoText = (TextView) findViewById(R.id.textView);         mNfcAdapter = NfcAdapter.getDefaultAdapter(this);  //实例化NFC设备        if (mNfcAdapter == null) {            mInfoText = (TextView) findViewById(R.id.textView);            mInfoText.setText("NFC is not available […]