Simple Bluetooth state monitor broadcast receiver

BroadcastReceiverInstance.txt

 private val broadCastReceiver = object : BroadcastReceiver() {
        override fun onReceive(contxt: Context?, intent: Intent?) {
            val action = intent?.action

            if (action == BluetoothAdapter.ACTION_STATE_CHANGED) {
                val state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR)
                when (state) {
                    BluetoothAdapter.STATE_OFF -> setUIBluetoothOff()
                    BluetoothAdapter.STATE_ON -> setUIBluetoothOn()
                }
            }
        }
    }