Java Code Examples for android.nfc.NdefRecord#createApplicationRecord()

private NdefMessage createMessage(String payload) {
  String mimeType = "application/com.professionalandroid.apps.nfcbeam";
  byte[] tagId = new byte[0];

  NdefMessage nfcMessage = new NdefMessage(new NdefRecord[] {
    // Create the NFC payload.
    new NdefRecord(NdefRecord.TNF_MIME_MEDIA,
      mimeType.getBytes(Charset.forName("US-ASCII")),
      tagId,
      payload.getBytes(Charset.forName("US-ASCII"))),

    // Add the AAR (Android Application Record)
    NdefRecord.createApplicationRecord("com.professionalandroid.apps.nfcbeam")
  });
  return nfcMessage;
}
 

@Override
protected void onResume() {
  super.onResume();

  // Listing 18-21: Creating an Android Beam NDEF message
  String payload = "Two to beam across";
  String mimeType = "application/com.professionalandroid.apps.nfcbeam";

  byte[] tagId = new byte[0];
  NdefMessage nfcMessage = new NdefMessage(new NdefRecord[] {
    // Create the NFC payload.
    new NdefRecord(NdefRecord.TNF_MIME_MEDIA,
      mimeType.getBytes(Charset.forName("US-ASCII")),
      tagId,
      payload.getBytes(Charset.forName("US-ASCII"))),

    // Add the AAR (Android Application Record)
    NdefRecord.createApplicationRecord("com.professionalandroid.apps.nfcbeam")
  });

  // Set static beam message
  NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
  nfcAdapter.setNdefPushMessage(nfcMessage, this);

  // Set dynamic beam message
  setBeamMessage();
}
 

/**
 * Generate an NDEF message containing the given Wi-Fi configuration
 *
 * @param wifiNetwork the Wi-Fi configuration to convert
 * @return an NDEF message containing the given Wi-Fi configuration
 */
public static NdefMessage generateNdefMessage(WifiNetwork wifiNetwork) {
    byte[] payload = generateNdefPayload(wifiNetwork);

    NdefRecord mimeRecord = new NdefRecord(
            NdefRecord.TNF_MIME_MEDIA,
            NfcUtils.NFC_TOKEN_MIME_TYPE.getBytes(Charset.forName("US-ASCII")),
            new byte[0],
            payload);
    NdefRecord aarRecord = NdefRecord.createApplicationRecord(PACKAGE_NAME);

    return new NdefMessage(new NdefRecord[] {mimeRecord, aarRecord});
}
 

/**
 * Converts a Long into a NdefMessage in application/vnd.facebook.places MIMEtype.
 * <p/>
 * for writing Places
 */
public static NdefMessage getAsNdef(String content) {
    byte[] textBytes = content.getBytes();
    NdefRecord textRecord = new NdefRecord(
            NdefRecord.TNF_MIME_MEDIA,
            "application/eu.power_switch".getBytes(),
            new byte[]{},
            textBytes);
    return new NdefMessage(new NdefRecord[]{
            textRecord,
            NdefRecord.createApplicationRecord("eu.power_switch")});
}
 

@Override
public NdefMessage createNdefMessage(NfcEvent event) {
    try {
        String payload = Json.toJson(Data.getInstance().getSelf().mPublicIdentity);
        return new NdefMessage(
                new NdefRecord[] {
                        NdefRecord.createMime(NFC_MIME_TYPE, payload.getBytes()),
                        NdefRecord.createApplicationRecord(NFC_AAR_PACKAGE_NAME) });
    } catch (Utils.ApplicationError e) {
        Log.addEntry(LOG_TAG, "failed to create outbound NFC message");
    }
    return null;
}
 

/**
 * 往标签写数据的方法
 *
 * @param tag
 */
public void writeNFCTag(Tag tag) {
    if (tag == null) {
        return;
    }
    NdefMessage ndefMessage = new NdefMessage(new NdefRecord[]{NdefRecord
            .createApplicationRecord(mPackageName)});
    //转换成字节获得大小
    int size = ndefMessage.toByteArray().length;
    try {
        //2.判断NFC标签的数据类型（通过Ndef.get方法）
        Ndef ndef = Ndef.get(tag);
        //判断是否为NDEF标签
        if (ndef != null) {
            ndef.connect();
            //判断是否支持可写
            if (!ndef.isWritable()) {
                return;
            }
            //判断标签的容量是否够用
            if (ndef.getMaxSize() < size) {
                return;
            }
            //3.写入数据
            ndef.writeNdefMessage(ndefMessage);
            Toast.makeText(this, "写入成功", Toast.LENGTH_SHORT).show();
        } else { //当我们买回来的NFC标签是没有格式化的，或者没有分区的执行此步
            //Ndef格式类
            NdefFormatable format = NdefFormatable.get(tag);
            //判断是否获得了NdefFormatable对象，有一些标签是只读的或者不允许格式化的
            if (format != null) {
                //连接
                format.connect();
                //格式化并将信息写入标签
                format.format(ndefMessage);
                Toast.makeText(this, "写入成功", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(this, "写入失败", Toast.LENGTH_SHORT).show();
            }
        }
    } catch (Exception e) {
    }
}
 

public NdefRecord[] createRecords() {

        NdefRecord[] records = new NdefRecord[2];

        byte[] payload = (ADD_FRIEND_URL + uid).getBytes(Charset.forName("UTF-8"));

        records[0] = NdefRecord.createMime("application/navibee", payload);

        // Tell OS that which application handles this record
        records[1] =
                NdefRecord.createApplicationRecord(getPackageName());


        return records;
    }