Example usage for android.nfc Tag getId

Introduction

In this page you can find the example usage for android.nfc Tag getId.

Prototype

public byte[] getId() 

Source Link

Document

Get the Tag Identifier (if it has one).

Usage

From source file:Main.java

public static void setTag(Tag tag) {
    mTag = tag;
    mUID = tag.getId();
}

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From source file:Main.java

public static String getTagUuid(Tag tag) {
    byte[] tagIDBytes = tag.getId();
    return mBytesToHexString(tagIDBytes);
}

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From source file:Main.java

/**
 * For Activities which want to treat new Intents as Intents with a new Tag attached. If the given Intent has a Tag extra, the {@link #mTag} and
 * {@link #mUID} will be updated and a Toast message will be shown in the calling Context (Activity). This method will also check if the
 * device/tag supports Mifare Classic (see return values).
 * // ww  w.  j ava  2s  . co  m
 * @param intent The Intent which should be checked for a new Tag.
 * @param context The Context in which the Toast will be shown.
 * @return <ul>
 *         <li>1 - The device/tag supports Mifare Classic</li>
 *         <li>0 - The device/tag does not support Mifare Classic</li>
 *         <li>-1 - Wrong Intent (action is not "ACTION_TECH_DISCOVERED").</li>
 *         </ul>
 * @see #mTag
 * @see #mUID
 */
public static int treatAsNewTag(Intent intent, Context context) {
    // Check if Intent has a NFC Tag.
    if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(intent.getAction())) {
        Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
        mTag = tag;
        mUID = tag.getId();

        // Show Toast message with UID.
        //         String id = " (UID: ";
        //         id += byte2HexString(tag.getId());
        //         id += ")";
        //         Toast.makeText(context, id, Toast.LENGTH_LONG).show();

        // Return "1" if device supports Mifare Classic. "0" otherwise.
        return (Arrays.asList(tag.getTechList()).contains(MifareClassic.class.getName())) ? 1 : 0;
    }
    return -1;
}

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From source file:Main.java

static JSONObject ndefToJSON(Ndef ndef) {
    JSONObject json = new JSONObject();

    if (ndef != null) {
        try {/*w  w w. j  av  a 2s .c  om*/

            Tag tag = ndef.getTag();
            // tag is going to be null for NDEF_FORMATABLE until NfcUtil.parseMessage is refactored
            if (tag != null) {
                json.put("id", byteArrayToJSON(tag.getId()));
                json.put("techTypes", new JSONArray(Arrays.asList(tag.getTechList())));
            }

            json.put("type", translateType(ndef.getType()));
            json.put("maxSize", ndef.getMaxSize());
            json.put("isWritable", ndef.isWritable());
            json.put("ndefMessage", messageToJSON(ndef.getCachedNdefMessage()));
            // Workaround for bug in ICS (Android 4.0 and 4.0.1) where
            // mTag.getTagService(); of the Ndef object sometimes returns null
            // see http://issues.mroland.at/index.php?do=details&task_id=47
            try {
                json.put("canMakeReadOnly", ndef.canMakeReadOnly());
            } catch (NullPointerException e) {
                json.put("canMakeReadOnly", JSONObject.NULL);
            }
        } catch (JSONException e) {
            Log.e(TAG, "Failed to convert ndef into json: " + ndef.toString(), e);
        }
    }
    return json;
}

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From source file:com.codebutler.farebot.mifare.Card.java

public static Card dumpTag(byte[] tagId, Tag tag) throws Exception {
    final String[] techs = tag.getTechList();
    if (ArrayUtils.contains(techs, "android.nfc.tech.NfcB"))
        return CEPASCard.dumpTag(tag);
    else if (ArrayUtils.contains(techs, "android.nfc.tech.IsoDep"))
        return DesfireCard.dumpTag(tag);
    else if (ArrayUtils.contains(techs, "android.nfc.tech.NfcF"))
        return FelicaCard.dumpTag(tagId, tag);
    else//from  w w w.  ja  v a  2 s  . c  om
        throw new UnsupportedTagException(techs, Utils.getHexString(tag.getId()));
}

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From source file:com.codebutler.farebot.card.Card.java

public static Card dumpTag(byte[] tagId, Tag tag) throws Exception {
    final String[] techs = tag.getTechList();
    if (ArrayUtils.contains(techs, "android.nfc.tech.NfcB"))
        return CEPASCard.dumpTag(tag);
    else if (ArrayUtils.contains(techs, "android.nfc.tech.IsoDep"))
        return DesfireCard.dumpTag(tag);
    else if (ArrayUtils.contains(techs, "android.nfc.tech.NfcF"))
        return FelicaCard.dumpTag(tagId, tag);
    else if (ArrayUtils.contains(techs, "android.nfc.tech.MifareClassic"))
        return ClassicCard.dumpTag(tagId, tag);
    else//from  w  ww .j  a  va  2 s  .co m
        throw new UnsupportedTagException(techs, Utils.getHexString(tag.getId()));
}

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From source file:com.google.samples.apps.iosched.ui.NfcBadgeActivity.java

private void readTag(Tag t) {
    byte[] id = t.getId();

    // get NDEF tag details
    Ndef ndefTag = Ndef.get(t);/*from ww w . ja v  a2  s. c  o  m*/

    // get NDEF message details
    NdefMessage ndefMesg = ndefTag.getCachedNdefMessage();
    if (ndefMesg == null) {
        return;
    }
    NdefRecord[] ndefRecords = ndefMesg.getRecords();
    if (ndefRecords == null) {
        return;
    }
    for (NdefRecord record : ndefRecords) {
        short tnf = record.getTnf();
        String type = new String(record.getType());
        if (tnf == NdefRecord.TNF_WELL_KNOWN && Arrays.equals(type.getBytes(), NdefRecord.RTD_URI)) {
            String url = new String(record.getPayload());
            recordBadge(url);
        }
    }
}

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From source file:com.codebutler.farebot.activities.AddKeyActivity.java

@Override
protected void onNewIntent(Intent intent) {
    Tag tag = (Tag) intent.getParcelableExtra("android.nfc.extra.TAG");
    mTagId = Utils.getHexString(tag.getId(), "");

    if (ArrayUtils.contains(tag.getTechList(), "android.nfc.tech.MifareClassic")) {
        mCardType = "MifareClassic";
        ((TextView) findViewById(R.id.card_type)).setText("MIFARE Classic");
        ((TextView) findViewById(R.id.card_id)).setText(mTagId);
        ((TextView) findViewById(R.id.key_data)).setText(Utils.getHexString(mKeyData, "").toUpperCase());

        findViewById(R.id.directions).setVisibility(View.GONE);
        findViewById(R.id.info).setVisibility(View.VISIBLE);
        findViewById(R.id.add).setVisibility(View.VISIBLE);

    } else {/*from   w ww .j  a  v a 2s.  c  om*/
        new AlertDialog.Builder(this).setMessage(R.string.card_keys_not_supported)
                .setPositiveButton(android.R.string.ok, null).show();
    }
}

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From source file:de.berlin.magun.nfcmime.core.RfidDAO.java

/** 
 * @param tag Tag//from  ww  w. java2s . co  m
 * @return a hexadecimal String representation of a Tag's ID or UID
 */
public String getTagId(Tag tag) {

    // get the ID byte array
    byte[] id = tag.getId();

    if (NfcV.get(tag) != null) {
        ArrayUtils.reverse(id);
    }

    return new String(Hex.encodeHex(id));
}

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From source file:com.codebutler.farebot.activity.AddKeyActivity.java

@Override
protected void onNewIntent(Intent intent) {
    Tag tag = intent.getParcelableExtra("android.nfc.extra.TAG");
    mTagId = Utils.getHexString(tag.getId(), "");

    if (ArrayUtils.contains(tag.getTechList(), "android.nfc.tech.MifareClassic")) {
        mCardType = "MifareClassic";
        ((TextView) findViewById(R.id.card_type)).setText("MIFARE Classic");
        ((TextView) findViewById(R.id.card_id)).setText(mTagId);
        ((TextView) findViewById(R.id.key_data)).setText(Utils.getHexString(mKeyData, "").toUpperCase());

        findViewById(R.id.directions).setVisibility(View.GONE);
        findViewById(R.id.info).setVisibility(View.VISIBLE);
        findViewById(R.id.add).setVisibility(View.VISIBLE);

    } else {/*www .  ja v a  2  s  .  c  o m*/
        new AlertDialog.Builder(this).setMessage(R.string.card_keys_not_supported)
                .setPositiveButton(android.R.string.ok, null).show();
    }
}

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