find the bluetooth devices available

Discover Devices

 private fun discoverDevices(result: MethodChannel.Result) {
        deviceFoundList.clear()
        val list: MutableList<String> = arrayListOf()
        val s = JSONObject()
        val myAdapter = BluetoothAdapter.getDefaultAdapter()
        myAdapter.startDiscovery()
        val filter = IntentFilter(BluetoothDevice.ACTION_FOUND)
        receiver = object : BroadcastReceiver() {
            override fun onReceive(context: Context, intent: Intent) {
                when (intent.action) {
                    BluetoothDevice.ACTION_FOUND -> {
                        val device: BluetoothDevice? = if(intent.hasExtra(BluetoothDevice.EXTRA_DEVICE))
                            intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE) else
                            null
                        device?.let {bt ->
                            s.put("name", bt.name)
                            s.put("address", bt.address)
                            s.put("bondState", bt.bondState.toString())
                            s.put("type", bt.type.toString())
                            bt.uuids?.let {
                                if(it.isNotEmpty()) {
                                    s.put("uuid", it[0].uuid.toString())
                                }
                            }
                            deviceFoundList.add(bt)
                            list.add(s.toString())
                        }
                    }
                    BluetoothAdapter.ACTION_DISCOVERY_FINISHED -> {
                        result.success(list.toList())
                    }
                    "" -> println("broadcast receiver intent.action has no attribute")
                    null -> println("broadcast receiver intent.action was null")
                }
            }
        }
        registerReceiver(receiver, filter)
    }