CODEWITHSUNDEEP
swiftmacoscore-bluetoothcbcentralmanager
Napoleon
Napoleon

Reputation: 13

CBCentralManager can't discover the device on macos?

I use Core Bluetooth Framework to discover bluetooth devices for macos APP, code as below, the variable discoveredPeripherals and print statement in centralManager callback, has no connected devices that show on my Macbook bluetooth settings, like 'Devialet Gemini II' on the image. The centralManager callback is normal, the print has print many other devices but 'Devialet Gemini II'. And I'm sure its' a BLE device.

!!! When I unpaired and disconnected the "Devialet Gemini II", can't discover the devices neither, but macos system bluetooth settings can.

system panel --(connected status img):

enter image description here

!!! When I unpaired and disconnected the "Devialet Gemini II", can't discover the devices neither, but macos system bluetooth settings can.

system panel--(unpaired and disconnected status img:)

enter image description here

print log: connected or disconnected or unpaired, always can't discover the "Devialet Gemini II" device.

enter image description here

class BluetoothManager: NSObject, CBCentralManagerDelegate, ObservableObject {
    @Published var isBluetoothEnabled = false
    @Published var discoveredPeripherals = [CBPeripheral]()
    @Published var connectedPeripherals = [CBPeripheral]()
    @Published var pairedPeripherals = [CBPeripheral]()

    private var centralManager: CBCentralManager!

    override init() {
        super.init()
        centralManager = CBCentralManager(delegate: self, queue: nil)
    }
    
    func connect(_ central: CBCentralManager, _ peripheral: CBPeripheral) {
        central.connect(peripheral)
    }

    func centralManagerDidUpdateState(_ central: CBCentralManager) {
        if central.state == .poweredOn {
            isBluetoothEnabled = true
            centralManager.scanForPeripherals(withServices: nil, options: nil)  
        } else {
            isBluetoothEnabled = false
        }
    }

    func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
        
        // there is no connected devices(named "Devialet Gemini II") as image show !!!!!!!!!
        print("discover:  \(peripheral.name ?? "Unknown")-\(peripheral.state)")

        if !discoveredPeripherals.contains(peripheral) {
            discoveredPeripherals.append(peripheral)
        }
        if !connectedPeripherals.contains(peripheral) && peripheral.state == .connected {
            connectedPeripherals.append(peripheral)
        }
    }
}

Upvotes: 0

Views: 50

Answers (1)

Napoleon
Napoleon

Reputation: 13

Problem solved, the name of device maybe(is) assigned after connected, so I shouldn't lookup for name.

Upvotes: 0

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