Swift example of iterating over all known Bluetooth devices on macOS

bt.swift

import IOBluetooth
// See https://developer.apple.com/reference/iobluetooth/iobluetoothdevice
// for API details.

class BluetoothDevices {
  func pairedDevices() {
    print("Bluetooth devices:")
    guard let devices = IOBluetoothDevice.pairedDevices() else {
      print("No devices")
      return
    }
    for item in devices {
      if let device = item as? IOBluetoothDevice {
        print("Name: \(device.name)")
        print("Paired?: \(device.isPaired())")
        print("Connected?: \(device.isConnected())")
      }
    }
  }
}

var bt = BluetoothDevices()
bt.pairedDevices()

I believe IOBluetooth should be able to handle both normal and LE on the Mac, I wondered if there was an easy way to get this to work?

Good question. Unfortunately I haven't needed to detect any bluetooth devices using this code snippet lately. I expect, given it's been six years, that the state of the art has moved on. I suggest hitting the latest Apple developer reference docs. Good luck! 🤞

I was having issues with IOBluetoothDevice.pairedDevices() always returning an empty array but I found out that it is because we need the Bluetooth entitlement:

	<key>com.apple.security.device.bluetooth</key>
	<true/>

This on macOS 13.4 (Ventura)