IOBluetoothDevice register doesn't work with forConnectNotifications

Question

I have a Bluetooth device already selected and I am trying to register connect and disconnect notifications

func selectDevice() {
    var promptRes = Int32?((deviceSelector?.runModal())!)
    if promptRes == Int32(kIOBluetoothUISuccess) {
        self.selectedDevice = deviceSelector?.getResults().first as? IOBluetoothDevice
        selectedDevice?
            .register(forConnectNotifications: self, selector: #selector(connected))
        selectedDevice?
            .register(forDisconnectNotification: self, selector: #selector(disconnected))
        self.connectDevice()
    } else {
        self.selectedDevice = nil
    }
}

I haven't problems with the forDisconnectNotificationbut I get next error with the forConnectNotifications:

Incorrect argument label in call (have 'forConnectNotifications:selector:', expected 'forDisconnectNotification:selector:')

It's so strange because even in the official doc it is documented forConnectNotifications instead of forDisconnectNotification.

Answer 1

Ok, the forDisconnectNotification can be associated with the instance https://developer.apple.com/documentation/iobluetooth/iobluetoothdevice/1429542-register but the forConnectNotifications must be associated with the type https://developer.apple.com/documentation/iobluetooth/iobluetoothdevice/1433370-register.

This one is the proper way to implement it IOBluetoothDevice.register(forConnectNotifications: self, selector: #selector(connected))