private void write(String text, Tag tag) throws IOException, FormatException {

		NdefRecord[] records = { createRecord(text) };
		NdefMessage  message = new NdefMessage(records);
		// Get an instance of Ndef for the tag.
		Ndef ndef = Ndef.get(tag);
		// Enable I/O
		ndef.connect();
		// Write the message
		ndef.writeNdefMessage(message);
		// Close the connection
		ndef.close();
	}



	private NdefRecord createRecord(String text) throws UnsupportedEncodingException {
		String lang       = "en";
		byte[] textBytes  = text.getBytes();
		byte[] langBytes  = lang.getBytes("US-ASCII");
		int    langLength = langBytes.length;
		int    textLength = textBytes.length;
		byte[] payload    = new byte[1 + langLength + textLength];

		// set status byte (see NDEF spec for actual bits)
		payload[0] = (byte) langLength;

		// copy langbytes and textbytes into payload
		System.arraycopy(langBytes, 0, payload, 1,              langLength);
		System.arraycopy(textBytes, 0, payload, 1 + langLength, textLength);

		NdefRecord recordNFC = new NdefRecord(NdefRecord.TNF_WELL_KNOWN,  NdefRecord.RTD_TEXT,  new byte[0], payload);

		return recordNFC;
	}
	

	private void WriteModeOn(){
		writeMode = true;
		adapter.enableForegroundDispatch(this, pendingIntent, writeTagFilters, null);
	}

	private void WriteModeOff(){
		writeMode = false;
		adapter.disableForegroundDispatch(this);
	}