Example usage for android.nfc.tech Ndef get

Introduction

In this page you can find the example usage for android.nfc.tech Ndef get.

Prototype

public static Ndef get(Tag tag) 

Source Link

Document

Get an instance of Ndef for the given tag.

Usage

From source file:Main.java

public static boolean writeNFCTag(NdefMessage message, Tag tag) {
    int size = message.toByteArray().length;
    try {/* w w  w.java2  s  .  c om*/
        Ndef ndef = Ndef.get(tag);
        if (ndef != null) {
            ndef.connect();
            if (!ndef.isWritable()) {
                return false;
            }
            if (ndef.getMaxSize() < size) {
                return false;
            }
            ndef.writeNdefMessage(message);
            return true;
        } else {
            NdefFormatable format = NdefFormatable.get(tag);
            if (format != null) {
                try {
                    format.connect();
                    format.format(message);
                    return true;
                } catch (IOException e) {
                    return false;
                }
            } else {
                return false;
            }
        }
    } catch (Exception e) {
        return false;
    }
}

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From source file:Main.java

/**
 * Write the current IP address of the Android device to an NFC Tag. Must be connected to wifi network.
 *
 * @param tag  NFC Tag to write message to
 * @param wifi WifiManager which can be used to retrieve IP address
 * @throws IOException//from ww w .  j a va 2 s .  c om
 * @throws FormatException
 * @throws IllegalStateException when Android device is not connected to Wifi network
 */
public static void writeIpAddress(Tag tag, WifiManager wifi)
        throws IOException, FormatException, IllegalStateException {
    String ipAddress = getIpAddr(wifi);
    if (ipAddress.equals("0.0.0.0")) {
        throw new IllegalStateException("Not connected to Wifi");
    }

    NdefRecord[] records = { createRecord(ipAddress) };
    NdefMessage message = new NdefMessage(records);
    Ndef ndef = Ndef.get(tag);
    ndef.connect();
    ndef.writeNdefMessage(message);
    ndef.close();
}

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From source file:com.macleod2486.androidswissknife.components.NFCCallback.java

@Override
public void onTagDiscovered(Tag tag) {

    EditText tagResult = activity.findViewById(R.id.textEntry);

    try {/* ww  w.  j a va2s .c  o m*/
        Ndef ndef = Ndef.get(tag);

        if (ndef != null) {
            NdefMessage ndefMesg = ndef.getCachedNdefMessage();
            if (ndefMesg != null) {
                nfcData = "Message: " + ndefMesg.toString();
                Log.i("NFCCallback", nfcData);
            }
        } else {
            nfcData = "Attempting to format";
            Log.i("NFCCallback", "Attempting to format");

            activity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    tagResult.setText("");
                    tagResult.append("Attempting to format");
                }
            });

            NdefFormatable format = NdefFormatable.get(tag);

            if (format != null) {
                format.connect();

                if (format.isConnected()) {
                    try {
                        format.format(null);
                        nfcData = "Formatted";
                        Log.i("NFCCallback", "Formatted");
                    } catch (Exception e) {
                        nfcData = "Error occurred in formatting";
                        e.printStackTrace();
                    }

                    format.close();
                }
            } else {
                Log.i("NFCCallback", "Tag not found");
                nfcData = "Tag not found or formatted";
            }
        }

        if (tagResult != null) {
            activity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    tagResult.setText("");
                    Log.i("NFCCallback", "Cleared");
                    tagResult.append(nfcData);
                }
            });
        }
    } catch (Exception e) {
        activity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                tagResult.setText("");
                tagResult.append("Error reading tag");
            }
        });

        e.printStackTrace();
    }
}

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

/**
 * @param tag Tag
 * @return true, if the Tag is NDEF formatted 
 */
public boolean isNdef(Tag tag) {
    return (Ndef.get(tag) != null);
}

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From source file:com.hybris.mobile.activity.NFCWriteActivity.java

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);

    Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);

    // default failed
    setResult(RESULT_CANCELED);//from  w ww . j a v a  2s .  co  m

    if (NFCUtil.supportsNdef(tag)) {
        Ndef ndef = Ndef.get(tag);

        try {
            int maxSize = ndef.getMaxSize();
            int messageSize = this.msg.toByteArray().length;

            if (ndef.isWritable() && maxSize > messageSize) {
                ndef.connect();
                ndef.writeNdefMessage(this.msg);

                if (getResources().getBoolean(R.bool.nfc_read_only)) {
                    if (ndef.canMakeReadOnly()) {
                        boolean success = ndef.makeReadOnly();
                        if (!success)
                            Toast.makeText(this, "Unable to make tag readonly!", Toast.LENGTH_LONG).show();
                        else
                            Toast.makeText(this, "Tag is now readonly!", Toast.LENGTH_LONG).show();
                    } else {
                        Toast.makeText(this, "This tag cannot be made readonly!", Toast.LENGTH_LONG).show();
                    }
                }

                setResult(RESULT_OK);
                showDialogFragmentWithMessage(R.string.nfc_tag_written);
            } else {
                showDialogFragmentWithMessage(R.string.error_nfc_readonly_size);
            }
        } catch (IOException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_io), e, Hybris.getAppContext());

        } catch (FormatException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_format), e, Hybris.getAppContext());
        } finally {
            try {
                ndef.close();
            } catch (IOException e) {
            }
        }

    } else if (NFCUtil.supportsNdefFormatable(tag)) {
        NdefFormatable ndefFormatable = NdefFormatable.get(tag);

        try {
            ndefFormatable.connect();

            if (getResources().getBoolean(R.bool.nfc_read_only)) {
                ndefFormatable.formatReadOnly(this.msg);
            } else {
                ndefFormatable.format(this.msg);
            }

            setResult(RESULT_OK);
            showDialogFragmentWithMessage(R.string.nfc_tag_written);
        } catch (IOException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_io), e, Hybris.getAppContext());
        } catch (FormatException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_format), e, Hybris.getAppContext());
        } finally {
            try {
                ndefFormatable.close();
            } catch (IOException e) {
            }
        }

    } else {
        showDialogFragmentWithMessage(R.string.error_nfc_no_ndef);
    }

}

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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);

    // get NDEF message details
    NdefMessage ndefMesg = ndefTag.getCachedNdefMessage();
    if (ndefMesg == null) {
        return;/*w w w. j a v  a 2 s  . c om*/
    }
    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:jp.co.brilliantservice.android.writertduri.HomeActivity.java

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);

    String action = intent.getAction();
    if (TextUtils.isEmpty(action))
        return;//w  w w  .j a v  a  2s  .c  o  m

    if (!action.equals(NfcAdapter.ACTION_TECH_DISCOVERED))
        return;

    // NdefMessage?
    String uri = "http://www.brilliantservice.co.jp/";
    NdefMessage message = createUriMessage(uri);

    // ??????????
    Tag tag = (Tag) intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
    List<String> techList = Arrays.asList(tag.getTechList());
    if (techList.contains(Ndef.class.getName())) {
        Ndef ndef = Ndef.get(tag);
        writeNdefToNdefTag(ndef, message);

        Toast.makeText(getApplicationContext(), "wrote NDEF to NDEF tag", Toast.LENGTH_SHORT).show();
    } else if (techList.contains(NdefFormatable.class.getName())) {
        NdefFormatable ndef = NdefFormatable.get(tag);
        writeNdefToNdefFormatable(ndef, message);

        Toast.makeText(getApplicationContext(), "wrote NDEF to NDEFFormatable tag", Toast.LENGTH_SHORT).show();
    } else {
        Toast.makeText(getApplicationContext(), "NDEF Not Supported", Toast.LENGTH_SHORT).show();
    }
}

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From source file:jp.co.brilliantservice.android.writertdtext.HomeActivity.java

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);

    String action = intent.getAction();
    if (TextUtils.isEmpty(action))
        return;/*from   ww  w  .  ja v  a2 s .  co m*/

    if (!action.equals(NfcAdapter.ACTION_TECH_DISCOVERED))
        return;

    // NdefMessage?
    String languageCode = "en";
    String text = String.format("Hello, World.(%s)", DATE_FORMAT.format(System.currentTimeMillis()));
    NdefMessage message = createTextMessage(text, languageCode);

    // ??????????
    Tag tag = (Tag) intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
    List<String> techList = Arrays.asList(tag.getTechList());
    if (techList.contains(Ndef.class.getName())) {
        Ndef ndef = Ndef.get(tag);
        writeNdefToNdefTag(ndef, message);

        Toast.makeText(getApplicationContext(), "wrote NDEF to NDEF tag", Toast.LENGTH_SHORT).show();
    } else if (techList.contains(NdefFormatable.class.getName())) {
        NdefFormatable ndef = NdefFormatable.get(tag);
        writeNdefToNdefFormatable(ndef, message);

        Toast.makeText(getApplicationContext(), "wrote NDEF to NDEFFormatable tag", Toast.LENGTH_SHORT).show();
    } else {
        Toast.makeText(getApplicationContext(), "NDEF Not Supported", Toast.LENGTH_SHORT).show();
    }
}

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

/**
 * @param tag Tag/*from  w w  w.  ja  v a 2  s .  c  o  m*/
 * @return an ArrayList of cached NdefMimeRecords, i.e. doesn't perform a read operation
 * on the NFC adapter. Will return null if the cache doesn't hold a Ndef object.
 */
public ArrayList<NdefMimeRecord> getCachedMimeRecords(Tag tag) {
    NdefSingleton.getInstance().setNdef(Ndef.get(tag));
    if (NdefSingleton.getInstance().getNdef() != null) {
        if (NdefSingleton.getInstance().getNdef().getCachedNdefMessage() != null) {
            this.records = NdefSingleton.getInstance().getNdef().getCachedNdefMessage().getRecords();
            return extractMimeRecords(this.records);
        }
    }
    return null;
}

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From source file:st.alr.homA.ActivityQuickpublishNfc.java

private boolean write(String text, Tag tag) {
    boolean success = true;

    NdefRecord aar = NdefRecord.createApplicationRecord("st.alr.homA");
    NdefRecord[] records = { createRecord(text), aar };
    NdefMessage ndefMsg = new NdefMessage(records);

    try {// w  w w .  j a v a2 s  .c o m
        Ndef ndef = Ndef.get(tag);
        if (ndef != null) {
            ndef.connect();

            if (!ndef.isWritable()) {
                publishProgress(getResources().getString(R.string.nfcWriteDialogTagReadOnly), false);
                success = false;
            }
            if (ndef.getMaxSize() < ndefMsg.getByteArrayLength()) {
                publishProgress(
                        getResources().getString(R.string.nfcWriteDialogTagCapacityIs) + ndef.getMaxSize()
                                + " byte" + getResources().getString(R.string.nfcWriteDialogTagMessageSizeIs)
                                + ndefMsg.getByteArrayLength() + "byte.",
                        false);
                success = false;
            }

            ndef.writeNdefMessage(ndefMsg);
            success = true;
        } else {
            NdefFormatable format = NdefFormatable.get(tag);
            if (format != null) {
                try {
                    format.connect();
                    format.format(ndefMsg);
                    publishProgress(getResources().getString(R.string.nfcWriteDialogTagFormatedAndWrote), true);
                    success = true;
                } catch (IOException e) {
                    publishProgress(getResources().getString(R.string.nfcWriteDialogTagFailedToFormat), false);
                    success = false;
                }
            } else {
                publishProgress(getResources().getString(R.string.nfcWriteDialogTagNoNDEFSupport), false);
                success = false;
            }
        }
    } catch (Exception e) {
        Log.e(this.toString(),
                getResources().getString(R.string.nfcWriteDialogTagFailedToWrite) + " (" + e.getMessage() + ")",
                e);
    }

    return success;
}

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