Examples with NDEFMessage net.rim.device.api.io.nfc.ndef.NDEFMessage used on opensource projects

Example 6 with NDEFMessage

use of net.rim.device.api.io.nfc.ndef.NDEFMessage in project Samples-for-Java by blackberry.

the class NfcReadNdefSmartTagUpdate method diyParsing.

/*
     * This code has been replaced by the new 7.1 Helper classes. Kept here for reference purposes.
     */
private void diyParsing() {
    /*
         * The NDEF Message may consist of a number of NDEF records
         */
    NDEFRecord[] records = _message.getRecords();
    /*
         * This is the number of NDEF records in the NDEF message
         */
    int numRecords = records.length;
    Utilities.log("XXXX NfcReadNdefSmartTagUpdate in runnable #records=" + numRecords);
    /*
         * Only unpick the message if it contains a non-zero number of records
         */
    if (numRecords > 0) {
        /*
             * Work our way through each record in the message in turn
             */
        for (int j = numRecords - 1; j >= 0; j--) {
            Utilities.log("XXXX NfcReadNdefSmartTagUpdate processing NDEF record#=" + j);
            /*
                 * Extract the NDEF record payload as an array of bytes
                 * 
                 * This is an example of what an NDEF Smart Poster payload looks like representing:
                 * 
                 * Text (en_US): This is a title for the BBC URI URI : http://www.bbc.co.uk
                 * 
                 * Original length 59 decimal bytes
                 * 
                 * NDEF PayLoad:
                 * 
                 * 99 01 25 01 54 31 05 65 6E 2D :..%.T1.en-: 55 53 54 68 69 73 20 69 73 20 :USThis is : 61 20 74 69 74 6C 65 20
                 * 66 6F :a title fo: 72 20 74 68 65 20 42 42 43 20 :r the BBC : 55 52 49 59 01 0A 01 55 32 01 :URIY...U2.: 62 62
                 * 63 2E 63 6F 2E 75 6B :bbc.co.uk :
                 * 
                 * Notice that "http://www." is so common it has a special binary encoding and only the remainder of the URL is
                 * text encoded "bbc.co.uk"
                 */
            byte[] payloadBytes = records[j].getPayload();
            /*
                 * Parse and display
                 */
            StringBuffer hexPayload = new StringBuffer();
            StringBuffer characterPayload = new StringBuffer();
            String hexpair;
            int numberOfHexPairs = 8;
            for (int i = 0; i < payloadBytes.length; i++) {
                hexpair = byte2HexPair(payloadBytes[i]);
                characterPayload.append(byte2Ascii(payloadBytes[i]));
                hexPayload.append(hexpair + " " + (((i + 1) % numberOfHexPairs == 0) ? "\n" : ""));
                characterPayload.append((((i + 1) % numberOfHexPairs == 0) ? "\n" : ""));
            }
            /*
                 * Parse the elements of the NDEF record It should identify WELL_KNOWN, TEXT or URI and "Sp" for smart poster
                 */
            String record = "Root NDEF Record\nID: " + records[j].getId() + "\nType: " + records[j].getType() + "\nTNF: " + records[j].getTypeNameFormat() + "\nPayload Len: " + records[j].getPayload().length + "\nHex Payload: \n" + hexPayload + "\nCharacter Payload: \n" + characterPayload;
            _screen.logEvent(record);
            /*
                 * If we recognise this as a Smart Tag Type "Sp"
                 */
            if ("Sp".equals(records[j].getType())) {
                Utilities.log("XXXX NfcReadNdefSmartTagUpdate recognised a Smart Poster Message");
                try {
                    NDEFMessage smartPosterMessage = new NDEFMessage(records[j].getPayload());
                    NDEFRecord[] spRecords = smartPosterMessage.getRecords();
                    int numSpRecords = spRecords.length;
                    Utilities.log("XXXX NfcReadNdefSmartTagUpdate in runnable #records=" + numSpRecords);
                    if (numSpRecords > 0) {
                        Utilities.log("XXXX NfcReadNdefSmartTagUpdate processing Smart Poster Message");
                        for (int k = numSpRecords - 1; k >= 0; k--) {
                            Utilities.log("XXXX NfcReadNdefSmartTagUpdate processing SP record#=" + k);
                            byte[] spPayloadBytes = spRecords[k].getPayload();
                            hexPayload = new StringBuffer();
                            characterPayload = new StringBuffer();
                            for (int i = 0; i < spPayloadBytes.length; i++) {
                                hexpair = byte2HexPair(spPayloadBytes[i]);
                                characterPayload.append(byte2Ascii(spPayloadBytes[i]));
                                hexPayload.append(hexpair + " " + (((i + 1) % numberOfHexPairs == 0) ? "\n" : ""));
                                characterPayload.append((((i + 1) % numberOfHexPairs == 0) ? "\n" : ""));
                            }
                            String spRecordLog = "Subsidiary NDEF Record\nID: " + spRecords[k].getId() + "\nType: " + spRecords[k].getType() + "\nTNF: " + spRecords[k].getTypeNameFormat() + "\nPayload Len: " + spRecords[k].getPayload().length + "\nHex Payload: \n" + hexPayload + "\nCharacter Payload: \n" + characterPayload;
                            _screen.logEvent(spRecordLog);
                            if ((spRecords[k].getTypeNameFormat() == NDEFRecord.TNF_WELL_KNOWN) && "T".equals(spRecords[k].getType())) {
                                /*
                                     * Well Known Type "T" is a TEXT record
                                     */
                                String text = new String();
                                String langCode = new String();
                                // bit 7 indicates UTF-8 if 0, UTF-16 if 1. Bits 5..0 len
                                int statusByte = spPayloadBytes[0];
                                // of IANA language code.
                                boolean is_utf16 = Utilities.isUtf16Encoded(statusByte);
                                int iana_language_code_len = Utilities.getIanaLanguageCodeLength(statusByte);
                                // extract the IANA language code as an ASCII string
                                byte[] iana_lang_code_bytes = new byte[iana_language_code_len];
                                if (iana_language_code_len > 0) {
                                    for (int m = 0; m < iana_language_code_len; m++) {
                                        iana_lang_code_bytes[m] = spPayloadBytes[m + 1];
                                    }
                                }
                                langCode = new String(iana_lang_code_bytes, "US-ASCII");
                                // extract the text which may be UTF-8 or UTF-16 encoded depending on bit 7 of the status byte
                                byte[] text_bytes = new byte[spPayloadBytes.length - iana_language_code_len + 1];
                                int i = 0;
                                for (int m = iana_language_code_len + 1; m < spPayloadBytes.length; m++) {
                                    text_bytes[i] = spPayloadBytes[m];
                                    i++;
                                }
                                if (!is_utf16) {
                                    text = new String(text_bytes, "UTF-8");
                                } else {
                                    text = new String(text_bytes, "UTF-16");
                                }
                                _screen.logEvent("Language: " + langCode);
                                _screen.logEvent("Text: " + text);
                            } else if ((spRecords[k].getTypeNameFormat() == NDEFRecord.TNF_WELL_KNOWN) && "U".equals(spRecords[k].getType())) {
                                /*
                                     * Well Known Type "U" is a URI record
                                     */
                                StringBuffer urlBuffer = new StringBuffer();
                                int urlOffset = 1;
                                if (spPayloadBytes[0] == (byte) 0x01) {
                                    urlBuffer.append("http://www.");
                                } else if (spPayloadBytes[0] == (byte) 0x02) {
                                    urlBuffer.append("https://");
                                } else if (spPayloadBytes[0] == (byte) 0x03) {
                                    urlBuffer.append("http://");
                                } else if (spPayloadBytes[0] == (byte) 0x04) {
                                    urlBuffer.append("https://");
                                }
                                // extract the URI which must be UTF-8 encoded
                                byte[] uri_bytes = new byte[spPayloadBytes.length - 1];
                                int i = 0;
                                for (int m = urlOffset; m < spPayloadBytes.length; m++) {
                                    uri_bytes[i] = spPayloadBytes[m];
                                    i++;
                                }
                                urlBuffer.append(new String(uri_bytes, "UTF-8"));
                                _screen.logEvent("URL: " + urlBuffer);
                            }
                        }
                    } else {
                        Utilities.log("XXXX NfcReadNdefSmartTagUpdate empty Smart Poster Message");
                    }
                } catch (BadFormatException e) {
                    Utilities.log("XXXX NfcReadNdefSmartTagUpdate bad NDEF format message");
                    e.printStackTrace();
                } catch (NFCException e) {
                    Utilities.log("XXXX NfcReadNdefSmartTagUpdate NFC Exception");
                    e.printStackTrace();
                } catch (UnsupportedEncodingException e) {
                    Utilities.log("XXXX NfcReadNdefSmartTagUpdate UnsupportedEncodingException");
                    e.printStackTrace();
                }
            }
        }
    } else {
        Utilities.log("XXXX NfcReadNdefSmartTagUpdate no records in message");
        _screen.logEvent("This is not the tag you're looking for!\n" + "It contains no records!\n" + "You should search elsewhere!");
    }
}

Example 7 with NDEFMessage

use of net.rim.device.api.io.nfc.ndef.NDEFMessage in project Samples-for-Java by blackberry.

the class NfcWriteNdefSmartTagListener method createSmartPosterTag.

private NDEFMessage createSmartPosterTag() throws IOException {
    // do this the old school way!
    String uri = (String) _tag_attrs.get(Constants.TAG_ATTRIBUTE_URI);
    String text = (String) _tag_attrs.get(Constants.TAG_ATTRIBUTE_TEXT);
    // (SP (TEXT, URL) message
    NDEFMessage rootMessage = new NDEFMessage();
    // (TEXT, URL) message
    NDEFMessage ndefMessage = new NDEFMessage();
    // Smart Poster Record
    NDEFRecord rootRecord = new NDEFRecord();
    // Tag Title TEXT record
    NDEFRecord tagTitleRecord = new NDEFRecord();
    // Tag URL record
    NDEFRecord tagUrlRecord = new NDEFRecord();
    // to build title
    ByteArrayOutputStream titlePayload = new ByteArrayOutputStream();
    // to build URL
    ByteArrayOutputStream urlPayload = new ByteArrayOutputStream();
    /*
         * ================ Record 0 ===========================================
         * 
         * This is the NDEF record that represents the title associated with the URL that will the URL part of the Smart Poster
         * Tag
         */
    // status byte: character encoding indicator bit plus length of
    titlePayload.write((byte) URL_TEXT_LOCALE.length());
    // locale language field
    // locale language
    titlePayload.write(URL_TEXT_LOCALE.getBytes("US-ASCII"));
    /*
         * This is the text to be associated with the Smart Poster Tag
         */
    // Text
    titlePayload.write(text.getBytes("UTF-8"));
    titlePayload.flush();
    /*
         * Construct the record itself
         */
    // record Id
    tagTitleRecord.setId("0");
    // It's TEXT type
    tagTitleRecord.setType(NDEFRecord.TNF_WELL_KNOWN, "T");
    // construct the record
    tagTitleRecord.setPayload(titlePayload.toByteArray());
    /*
         * ================ Record 1 ===========================================
         * 
         * This is the NDEF record that represents the URL associated with the title that will the Text part of the Smart Poster
         * Tag
         */
    // coded abbreviation for "http://www."
    urlPayload.write((byte) 0x01);
    // The rest of the URL
    urlPayload.write(uri.getBytes());
    urlPayload.flush();
    /*
         * Construct the record itself
         */
    // record Id
    tagUrlRecord.setId("1");
    // It's a URL(I) type
    tagUrlRecord.setType(NDEFRecord.TNF_WELL_KNOWN, "U");
    // construct the record
    tagUrlRecord.setPayload(urlPayload.toByteArray());
    /*
         * ================ Construct an NDEF MEssage ==========================
         * 
         * This NDEF Message comprises the Title and URL records (TEXT, URL)
         */
    ndefMessage.setRecords(new NDEFRecord[] { tagTitleRecord, tagUrlRecord });
    /*
         * ================ Wrap the message as a Smart Poster Tag ============
         * 
         * What we have now is a single NDEF message with two records, a URL and some text associated with it. We now need to make
         * that into a Smart poster Tag which is a well known type: "Sp"
         */
    // Smart Poster Type
    rootRecord.setType(NDEFRecord.TNF_WELL_KNOWN, "Sp");
    // construct the record
    rootRecord.setPayload(ndefMessage.getBytes());
    /*
         * ================ Construct an NDEF MEssage ==========================
         * 
         * This NDEF message contains a single record encoding the Smart Poster Tag
         */
    // (SP, (TEXT, URL))
    rootMessage.setRecords(new NDEFRecord[] { rootRecord });
    /*
         * Return the Smart Poster Tag
         */
    return rootMessage;
}

Example 8 with NDEFMessage

use of net.rim.device.api.io.nfc.ndef.NDEFMessage in project Samples-for-Java by blackberry.

the class NfcSender method buildNDEFMessages.

public NDEFMessage[] buildNDEFMessages() {
    Utilities.log("XXXX NfcSender sending ProtocolMessage:" + _message);
    NDEFMessage[] ndef_messages = null;
    NDEFMessage game_message;
    try {
        byte[] payload = _message.marshall();
        Utilities.log("XXXX NfcSender sending payload 0x" + ByteArrayUtilities.byteArrayToHex(payload));
        game_message = NDEFMessageUtils.createExternalTypeMessage(Constants.SNEP_DOMAIN, Constants.SNEP_TYPE, payload);
        ndef_messages = new NDEFMessage[] { game_message };
    } catch (NFCException e) {
        Utilities.log("XXXX NfcSender:" + e.getClass().getName() + ":" + e.getMessage());
    }
    return ndef_messages;
}