NFCUtil_createNFCMessage.kt

 fun createNFCMessage(payload: String, intent: Intent?) : Boolean {

        val pathPrefix = "peterjohnwelcome.com:nfcapp"
        val nfcRecord = NdefRecord(NdefRecord.TNF_EXTERNAL_TYPE, pathPrefix.toByteArray(), ByteArray(0), payload.toByteArray())
        val nfcMessage = NdefMessage(arrayOf(nfcRecord))
        intent?.let {
            val tag = it.getParcelableExtra<Tag>(NfcAdapter.EXTRA_TAG)
            return  writeMessageToTag(nfcMessage, tag)
        }
        return false
    }