iOS：只需给计算机提供MAC地址，就可以通过蓝牙向计算机发送字符串吗

我是swift编程新手，需要蓝牙方面的帮助

我正在做一个项目，这个项目涉及通过蓝牙向计算机发送字符串，我能够事先输入接收设备的MAC地址，这样它就知道在哪里发送

在此阶段，我唯一的问题是连接到所述设备，并发送数据。我试着查找教程，但它们要么是针对Android的（我已经开始工作了，我现在需要一个用于iOS的），要么是关于如何通过服务UUID连接（什么？）

以下是我目前掌握的代码：

import UIKit
import CoreBluetooth

class transmitter: UIViewController, CBCentralManagerDelegate, CBPeripheralDelegate {

    var manager:CBCentralManager!
    var peripheral:CBPeripheral!
    let SCRATCH_UUID = UUID.init(uuidString: "00001101-0000-1000-8000-00805F9B34FB")
    let SERVICE_UUID = CBUUID(string: "00001101-0000-1000-8000-00805F9B34FB")

    override func viewDidLoad() {
        super.viewDidLoad()
        // Define manager
        manager = CBCentralManager(delegate: self, queue: nil)
        print(globals.data)
        // Do any additional setup after loading the view.
    }

    @IBOutlet weak var console: UILabel!

    // Check if teh bluetooth is enabled
    func centralManagerDidUpdateState(_ central: CBCentralManager) {
        if central.state == CBManagerState.poweredOn {
            central.scanForPeripherals(withServices:nil, options: nil)
            print (central.isScanning)
            console.text = String(describing: central.retrievePeripherals(withIdentifiers: [SCRATCH_UUID!]))
        } else {
            //print("Bluetooth not available.")
            let alert = UIAlertController(title: "Bluetooth unavalible", message: "Bluetooth is unavalibe for this device. Is it even turned on?", preferredStyle: UIAlertControllerStyle.alert)
            alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }
    }

    // Pair with device....
    // TODO: Change to be based on MAC Address instead of name...?
    private func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) {
        let device = (advertisementData as NSDictionary).object(forKey: CBAdvertisementDataLocalNameKey) as? NSString
        // console.text = peripheral.name
        /*
        if device?.contains(globals.macAddress) == true {
            self.manager.stopScan()

            self.peripheral = peripheral
            self.peripheral.delegate = self

            manager.connect(peripheral, options: nil)
        }
*/
    }

    //
    // The rest is copied from a tutorial
    //

    // Once you are connected to a device, you can get a list of services on that device.
    func centralManager(central: CBCentralManager, didConnectPeripheral peripheral: CBPeripheral) {
        peripheral.discoverServices(nil)
    }

    // Once you get a list of the services offered by the device, you will want to get a list of the characteristics. You can get crazy here, or limit listing of characteristics to just a specific service. If you go crazy watch for threading issues.
    private func peripheral(peripheral: CBPeripheral,didDiscoverServices error: NSError?) {
        for service in peripheral.services! {
            let thisService = service as CBService

            if service.uuid == SERVICE_UUID {
                peripheral.discoverCharacteristics(nil, for: thisService)
            }
        }
    }

    // There are different ways to approach getting data from the BLE device. One approach would be to read changes incrementally. Another approach, the approach I used in my application, would be to have the BLE device notify you whenever a characteristic value has changed.
    private func peripheral(peripheral: CBPeripheral, didDiscoverCharacteristicsForService service: CBService, error: NSError?) {
        for characteristic in service.characteristics! {
            let thisCharacteristic = characteristic as CBCharacteristic

            if thisCharacteristic.uuid == SERVICE_UUID {
                self.peripheral.setNotifyValue(true, for: thisCharacteristic)
            }
        }
    }

    // This is an optional step, but hey, let us be good programmers and clean up after ourselves. Also a good place to start scanning all over again.
    private func centralManager(central: CBCentralManager, didDisconnectPeripheral peripheral: CBPeripheral, error: NSError?) {
        central.scanForPeripherals(withServices: nil, options: nil)
    }

}

在这个阶段，我想做的是：

检查以确保蓝牙已启用（正常工作）

列出可用设备，因为我无法通过MAC地址连接（失败）

不过，如果我不必执行第2步，那么最好是通过提供的MAC地址连接，而不是扫描没有显示任何设备的设备

---

帮助？

确定，因此似乎不支持SPP。废话：/

我会研究约翰·多伊和保罗的建议

---

谢谢

您不能使用核心蓝牙通过MAC地址连接到设备。您需要扫描正在宣传您感兴趣的服务的外围设备，然后连接到它。连接后，您可以发现并写入设备提供的特征。核心蓝牙将MAC地址隐藏在标识符后面。另外，核心蓝牙不支持旧的配置文件，例如您可能正在与Android一起使用的串行端口配置文件。好的，有没有API允许我像Android一样通过MAC地址连接？或者这在iOSNo中是完全禁止的，没有api可以做你想做的事情。您需要在pc上运行一个应用程序来宣传您的iOS应用程序可以连接到的服务。更不用说，您对SPP做了更多的研究，看起来它受到bluetooth 4.0的支持（有点），但不支持BLE。因此，我的方法无效：（Bluetooth 4.0支持SPP配置文件，因为它与早期版本的Bluetooth向后兼容，但Core Data仅向iOS应用程序公开GATT配置文件。如果您的外设通过MFi认证，则它可以通过外部附件框架使用SPP配置文件。