在iOS模拟器中测试核心蓝牙应用

import CoreBluetooth

class BluetoothManager: NSObject, CBCentralManagerDelegate {
    var centralManager: CBCentralManager!
    
    override init() {
        super.init()
        centralManager = CBCentralManager(delegate: self, queue: nil)
    }
    
    func centralManagerDidUpdateState(_ central: CBCentralManager) {
        switch central.state {
        case .poweredOn:
            central.scanForPeripherals(withServices: nil, options: nil)
        default:
            print("Bluetooth is not available.")
        }
    }
    
    func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
        print("Discovered \(peripheral.name ?? "Unknown Device")")
        central.stopScan()
        central.connect(peripheral, options: nil)
    }
    
    func centralManager(_ central: CBCentralManager, didConnect peripheral: CBPeripheral) {
        print("Connected to \(peripheral.name ?? "Unknown Device")")
        peripheral.delegate = self
        peripheral.discoverServices(nil)
    }
}

extension BluetoothManager: CBPeripheralDelegate {
    func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?) {
        guard let services = peripheral.services else { return }
        for service in services {
            peripheral.discoverCharacteristics(nil, for: service)
        }
    }
    
    func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) {
        guard let characteristics = service.characteristics else { return }
        for characteristic in characteristics {
            if characteristic.properties.contains(.read) {
                peripheral.readValue(for: characteristic)
            }
        }
    }
}