Cfrgtkky

In my current project I need to connect Arduino Module (HC-06 I believe) to a phone via bluetooth. I use this gist as a bluetooth device picker. It uses Android's device picker activity. I haven't changed it, copy pasted as-is. I access it by this code in my main AndroidViewModel:

val btManager = BluetoothDeviceManager(getApplication())

        btManager.pickDevice {

            it.createBond()

            log( "Successfully bonded")

            Repository.bluetoothService.startBluetoothService(it) }

So, I start this class and its method pickDevice(). The handler returns me picked device as a BluetoothDevice

I thought it is much cleaner and easier than to write my own discovery and connection activity.

But the problem is, when I run this activity, it does not show me all the available devices. In fact, it shows only smartphones and laptops (as far as I tested). So It can't find my Arduino module. But when I leave the app, and start discovery through my smartphone's bluetooth settings, I can see all of them, including the desired module.
I am failing to find any documentation from google about this action, and I can't seem to find any other examples.

Thanks in advance. If you need any additional info, I'll try to provide what I can. And if there are any English mistakes, sorry, it is not my mother tongue)