ios 如何获取蓝牙地址

Question

ios 如何获取蓝牙的地址（示例：56:F9:80:3A:C5:C7）

Answer 1

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iOS获取蓝牙地址可以通过CoreBluetooth框架中的CBCentralManager类实现。具体步骤如下： 1.导入CoreBluetooth框架

import CoreBluetooth

2.创建CBCentralManager对象

let centralManager = CBCentralManager()

3.实现CBCentralManagerDelegate的方法

func centralManagerDidUpdateState(_ central: CBCentralManager) {
    if central.state == .poweredOn {
        //蓝牙已打开，开始扫描外设
        central.scanForPeripherals(withServices: nil, options: nil)
    } else {
        //蓝牙未打开或不可用
        print("蓝牙未打开或不可用")
    }
}
func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
    //发现外设
    print(peripheral)
    //获取蓝牙地址
    print(peripheral.identifier.uuidString)
}

4.启动Central Manager

centralManager.delegate = self
centralManager.scanForPeripherals(withServices: nil, options: nil)

示例代码：（Swift 5）

import UIKit
import CoreBluetooth
class ViewController: UIViewController, CBCentralManagerDelegate {
    let centralManager = CBCentralManager()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        centralManager.delegate = self
        centralManager.scanForPeripherals(withServices: nil, options: nil)
    }
    
    func centralManagerDidUpdateState(_ central: CBCentralManager) {
        if central.state == .poweredOn {
            central.scanForPeripherals(withServices: nil, options: nil)
        } else {
            print("蓝牙未打开或不可用")
        }
    }
    
    func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
        print(peripheral)
        print(peripheral.identifier.uuidString)
    }
}

注意：获取蓝牙地址需要先发现外设，如果未发现外设时尝试获取地址会返回空字符串。