MainActivity.kt

class MainActivity : AppCompatActivity() {

    private var mNfcAdapter: NfcAdapter? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        mNfcAdapter = NfcAdapter.getDefaultAdapter(this)
    }

    override fun onResume() {
        super.onResume()
        mNfcAdapter?.let {
            NFCUtil.enableNFCInForeground(it, this,javaClass)
        }
    }

    override fun onPause() {
        super.onPause()
        mNfcAdapter?.let {
            NFCUtil.disableNFCInForeground(it,this)
        }
    }

    override fun onNewIntent(intent: Intent?) {
        super.onNewIntent(intent)
        val messageWrittenSuccessfully = NFCUtil.createNFCMessage(messageEditText.text.toString(), intent)
        resultTextView.text = ifElse(messageWrittenSuccessfully,"Successful Written to Tag","Something When wrong Try Again")
    }


    fun<T> ifElse(condition: Boolean, primaryResult: T, secondaryResult: T) = if (condition) primaryResult else secondaryResult

}