Example usage for android.nfc Tag getTechList

List of usage examples for android.nfc Tag getTechList

  1. HOME
  2. Java
  3. android
  4. android.nfc.*
  5. Tag
  6. getTechList

Introduction

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

Prototype

public String[] getTechList()

Source Link

Document

Get the technologies available in this tag, as fully qualified class names.

Usage

From source file:Main.java

public static String[] getTagType(Intent intent) {
    Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
    String[] techList = tag.getTechList();
    return techList;
}

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. j a  va 2 s.  co m
        throw new UnsupportedTagException(techs, Utils.getHexString(tag.getId()));
}

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/* w ww. j  a va  2s .c om*/
        throw new UnsupportedTagException(techs, Utils.getHexString(tag.getId()));
}

From source file:Main.java

/**
 * Repairs the broken tag on HTC devices running Android 5.x
 * <p/>//from   w ww .jav a  2s  .c om
 * "It seems, the reason of this bug in TechExtras of NfcA is null. However, TechList contains MifareClassic." -bildin
 * For more information please refer to https://github.com/ikarus23/MifareClassicTool/issues/52#issuecomment-103797115
 * <p/>
 * Code source: https://github.com/ikarus23/MifareClassicTool/issues/52#issuecomment-104277445
 *
 * @param oTag The broken tag
 * @return The fixed tag
 */
public static Tag repairTag(Tag oTag) {
    if (oTag == null)
        return null;

    String[] sTechList = oTag.getTechList();

    Parcel oParcel, nParcel;

    oParcel = Parcel.obtain();
    oTag.writeToParcel(oParcel, 0);
    oParcel.setDataPosition(0);

    int len = oParcel.readInt();
    byte[] id = null;
    if (len >= 0) {
        id = new byte[len];
        oParcel.readByteArray(id);
    }
    int[] oTechList = new int[oParcel.readInt()];
    oParcel.readIntArray(oTechList);
    Bundle[] oTechExtras = oParcel.createTypedArray(Bundle.CREATOR);
    int serviceHandle = oParcel.readInt();
    int isMock = oParcel.readInt();
    IBinder tagService;
    if (isMock == 0) {
        tagService = oParcel.readStrongBinder();
    } else {
        tagService = null;
    }
    oParcel.recycle();

    int nfca_idx = -1;
    int mc_idx = -1;

    for (int idx = 0; idx < sTechList.length; idx++) {
        if (sTechList[idx].equals(NfcA.class.getName())) {
            nfca_idx = idx;
        } else if (sTechList[idx].equals(MifareClassic.class.getName())) {
            mc_idx = idx;
        }
    }

    if (nfca_idx >= 0 && mc_idx >= 0 && oTechExtras[mc_idx] == null) {
        oTechExtras[mc_idx] = oTechExtras[nfca_idx];
    } else {
        return oTag;
    }

    nParcel = Parcel.obtain();
    nParcel.writeInt(id.length);
    nParcel.writeByteArray(id);
    nParcel.writeInt(oTechList.length);
    nParcel.writeIntArray(oTechList);
    nParcel.writeTypedArray(oTechExtras, 0);
    nParcel.writeInt(serviceHandle);
    nParcel.writeInt(isMock);
    if (isMock == 0) {
        nParcel.writeStrongBinder(tagService);
    }
    nParcel.setDataPosition(0);

    Tag nTag = Tag.CREATOR.createFromParcel(nParcel);

    nParcel.recycle();

    return nTag;
}

From source file:Main.java

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

    if (ndef != null) {
        try {//from  w  w w .  j av  a  2 s.  com

            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;
}

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).
 * /* w  w  w  . j  a v  a2s  .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;
}

From source file:com.codebutler.farebot.TagReaderFactory.java

@NonNull
public TagReader getTagReader(@NonNull byte[] tagId, @NonNull Tag tag, @Nullable CardKeys cardKeys)
        throws UnsupportedTagException {
    String[] techs = tag.getTechList();
    if (ArrayUtils.contains(techs, "android.nfc.tech.IsoDep")) {
        return new DesfireTagReader(tagId, tag);
    } else if (ArrayUtils.contains(techs, "android.nfc.tech.NfcB")) {
        return new CEPASTagReader(tagId, tag);
    } else if (ArrayUtils.contains(techs, "android.nfc.tech.NfcF")) {
        return new FelicaTagReader(tagId, tag);
    } else if (ArrayUtils.contains(techs, "android.nfc.tech.MifareClassic")) {
        return new ClassicTagReader(tagId, tag, (ClassicCardKeys) cardKeys);
    } else if (ArrayUtils.contains(techs, "android.nfc.tech.MifareUltralight")) {
        return new UltralightTagReader(tagId, tag);
    } else {/*from  ww  w  . j  a  v a2 s.  c  o  m*/
        throw new UnsupportedTagException(techs, ByteUtils.getHexString(tag.getId()));
    }
}

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

private void resolveIntent(Intent intent) {
    final TextView textView = (TextView) findViewById(R.id.textView);

    try {//from  w  ww . j  a v  a 2  s .c  o m
        Bundle extras = intent.getExtras();

        final Tag tag = (Tag) extras.getParcelable("android.nfc.extra.TAG");
        ;
        final String[] techs = tag.getTechList();

        new AsyncTask<Void, String, MifareCard>() {
            Exception mException;

            @Override
            protected MifareCard doInBackground(Void... params) {
                try {
                    if (ArrayUtils.contains(techs, "android.nfc.tech.NfcB"))
                        return CEPASCard.dumpTag(tag.getId(), tag);
                    else if (ArrayUtils.contains(techs, "android.nfc.tech.IsoDep"))
                        return DesfireCard.dumpTag(tag.getId(), tag);
                    else
                        throw new UnsupportedTagException(techs, Utils.getHexString(tag.getId()));
                } catch (Exception ex) {
                    mException = ex;
                    return null;
                }
            }

            @Override
            protected void onPostExecute(MifareCard card) {
                if (mException != null) {
                    if (mException instanceof UnsupportedTagException) {
                        UnsupportedTagException ex = (UnsupportedTagException) mException;
                        new AlertDialog.Builder(ReadingTagActivity.this).setTitle("Unsupported Tag")
                                .setMessage(ex.getMessage()).setCancelable(false)
                                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface arg0, int arg1) {
                                        finish();
                                    }
                                }).show();
                    } else {
                        Utils.showErrorAndFinish(ReadingTagActivity.this, mException);
                    }
                    return;
                }

                try {
                    String cardXml = Utils.xmlNodeToString(card.toXML().getOwnerDocument());

                    ContentValues values = new ContentValues();
                    values.put(CardsTableColumns.TYPE, card.getCardType().toInteger());
                    values.put(CardsTableColumns.TAG_SERIAL, Utils.getHexString(card.getTagId()));
                    values.put(CardsTableColumns.DATA, cardXml);
                    values.put(CardsTableColumns.SCANNED_AT, card.getScannedAt().getTime());

                    Uri uri = getContentResolver().insert(CardProvider.CONTENT_URI_CARD, values);
                    startActivity(new Intent(Intent.ACTION_VIEW, uri));
                    finish();
                } catch (Exception ex) {
                    Utils.showErrorAndFinish(ReadingTagActivity.this, ex);
                }
            }

            @Override
            protected void onProgressUpdate(String... values) {
                textView.setText(values[0]);
            }

        }.execute();

    } catch (Exception ex) {
        Utils.showErrorAndFinish(this, ex);
    }
}

From source file:org.esupportail.nfctagdroid.authentication.DesfireAuthProvider.java

public String desfireAuth(Tag tag) throws ExecutionException, InterruptedException {
    String response = "ERROR";

    IsoDep isoDep = null;/*from  w ww  .  j a  va2 s  .  c  o  m*/
    String[] techList = tag.getTechList();
    for (String tech : techList) {
        if (tech.equals(IsoDep.class.getName())) {
            isoDep = IsoDep.get(tag);
            log.info("Detected Desfire tag with id : " + HexaUtils.swapPairs(tag.getId()));
        }
    }
    if (isoDep == null) {
        throw new NfcTagDroidException("Did not detect a Desfire tag ");
    }

    try {
        String[] command = new String[2];
        String result = "";
        command[1] = "1";
        isoDep.connect();

        while (!command[1].equals("OK") && !command[1].equals("ERROR")) {

            DesfireHttpRequestAsync desfireHttpRequestAsync = new DesfireHttpRequestAsync();
            response = desfireHttpRequestAsync.execute(new String[] { command[1] + "/?result=" + result })
                    .get(time, TimeUnit.MILLISECONDS);
            try {
                JSONArray jsonArr = new JSONArray(response);
                command[0] = jsonArr.getString(0);
                command[1] = jsonArr.getString(1);

                if (!command[1].equals("OK") && !command[1].equals("ERROR")) {
                    byte[] byteResult = isoDep.transceive(HexaUtils.hexStringToByteArray(command[0]));
                    result = HexaUtils.byteArrayToHexString(byteResult);
                }
                log.debug("command step: " + command[1]);
                log.debug("command to send: " + command[0]);
                log.debug("result : " + result);
            } catch (Exception e) {
                throw new NfcTagDroidException(e);
            }
        }
        response = command[0];

    } catch (TimeoutException e) {
        log.warn("Time out");
        throw new NfcTagDroidException("Time out Desfire", e);
    } catch (TagLostException e) {
        throw new NfcTagDroidPleaseRetryTagException("TagLostException - authentication aborted", e);
    } catch (NfcTagDroidException e) {
        throw new NfcTagDroidInvalidTagException("nfctagdroidInvalidTagException - tag not valid", e);
    } catch (IOException e) {
        throw new NfcTagDroidInvalidTagException("IOException - authentication aborted", e);
    } catch (ExecutionException e) {
        throw new NfcTagDroidPleaseRetryTagException("ExecutionException - authentication aborted", e);
    } catch (InterruptedException e) {
        throw new NfcTagDroidPleaseRetryTagException("InterruptedException - authentication aborted", e);
    } finally {
        try {
            isoDep.close();
        } catch (IOException e) {
            throw new NfcTagDroidException(e);
        }
    }

    return response;
}

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   ww w  . j  av a  2s  .  c  o  m*/
        new AlertDialog.Builder(this).setMessage(R.string.card_keys_not_supported)
                .setPositiveButton(android.R.string.ok, null).show();
    }
}