Swift没有发现任何蓝牙设备

Question

，所以我编写了一个(公平的(简单代码以扫描蓝牙设备，并以匹配名称连接到一个，但是当BT设备为发现从未被调用。有人可以看一下，看看您是否可以在我的工作中找到错误？

我尝试过的事情：

1. 将扫描初始化中的服务UUID更改为零以扫描所有设备
2. 使用nslog语句检测何时diddisvisover程序找到设备
3. 一堆断点，可以在每个功能的开始时断裂。

我对此感到非常困惑，我遵循了一个名为"蓝牙12个步骤"的页面，并与Apple Developer参考页面进行了仔细检查。

import UIKit
import CoreBluetooth

class ViewController: UIViewController, CBCentralManagerDelegate, CBPeripheralDelegate {
    var manager:CBCentralManager!
    var peripheral:CBPeripheral!
    var peripherals = Array<CBPeripheral>()
    let devName = "CHS Bus Loop"
    let servUUID = CBUUID(string: "6e400001-b5a3-f393-e0a9-e50e24dcca9e")
    let txChar = CBUUID(string: "6E400002-B5A3-F393-E0A9-E50E24DCCA9E")
    let rxChar = CBUUID(string: "6E400003-B5A3-F393-E0A9-E50E24DCCA9E")
    var txCharacteristic: CBCharacteristic?
    override func viewDidLoad() {
        super.viewDidLoad()
        manager = CBCentralManager(delegate: self, queue: nil)
        textLabel.text="CHS We Are One"
        // Do any additional setup after loading the view, typically from a nib.
    }
    func centralManagerDidUpdateState(_ central: CBCentralManager) {
        if central.state == CBManagerState.poweredOn {
            central.scanForPeripherals(withServices: nil, options: nil)
        } else {
            print("Bluetooth not available.")
        }
    }

    func centralManager(central: CBCentralManager, didDiscoverperipheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) {
        let device = (advertisementData as NSDictionary)
            .object(forKey: CBAdvertisementDataLocalNameKey)
            as? NSString
        if device?.contains(devName) == true{
            self.manager.stopScan()
            self.peripheral = peripheral
            self.peripheral.delegate = self
            manager.connect(peripheral, options: nil)
        }
        func centralManager2(central: CBCentralManager, didConnectperipheral peripheral: CBPeripheral){
            peripheral.discoverServices(nil)
        }
        func peripheral(peripheral: CBPeripheral,didDiscoverServices error: NSError?){
            for service in peripheral.services! {
                let thisService = service as CBService
                if service.uuid == txChar{
                    peripheral.discoverCharacteristics(nil, for:thisService)
                }
            }
        }
        func peripheral(
            peripheral: CBPeripheral,
            didDiscoverCharacteristicsForService service: CBService,
            error: NSError?) {
            for characteristic in service.characteristics! {
                let thisCharacteristic = characteristic as CBCharacteristic
                if thisCharacteristic.uuid == rxChar {
                    self.peripheral.setNotifyValue(
                        true, 
                        for: thisCharacteristic
                    )
                }
            }
        }


        peripherals.append(peripheral)
        //tableView.reloadData()
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    //@IBOutlet weak var tableView: UITableView!
    @IBOutlet weak var deviceSelector: UITableView!
    @IBOutlet weak var textField1: UITextField!
    @IBOutlet weak var textField2: UITextField!
    @IBOutlet weak var textField3: UITextField!
    @IBOutlet weak var textField4: UITextField!
    @IBOutlet weak var textField5: UITextField!
    @IBOutlet weak var textField6: UITextField!
    @IBOutlet weak var direct1: UISegmentedControl!
    @IBOutlet weak var direct2: UISegmentedControl!
    @IBOutlet weak var direct3: UISegmentedControl!
    @IBOutlet weak var direct4: UISegmentedControl!
    @IBOutlet weak var direct5: UISegmentedControl!
    @IBOutlet weak var direct6: UISegmentedControl!
    @IBOutlet weak var textLabel: UILabel!
    @IBAction func UpdateDecimal(_ sender: Any) {
        var LED1=""
        var LED2=""
        var LED3=""
        var LED4=""
        var LED5=""
        var LED6=""
        var combine=""
        if direct1.selectedSegmentIndex == 2{
            LED1 = "002"
        }else{
            LED1 = self.textField1.text! + "(direct1.selectedSegmentIndex)"
        }
        if direct2.selectedSegmentIndex == 2{
            LED2 = "002"
        }else{
            LED2 = self.textField2.text! + "(direct2.selectedSegmentIndex)"
        }
        if direct3.selectedSegmentIndex == 2{
            LED3 = "002"
        }else{
            LED3 = self.textField3.text! + "(direct3.selectedSegmentIndex)"
        }
        if direct4.selectedSegmentIndex == 2{
            LED4 = "002"
        }else{
            LED4 = self.textField4.text! + "(direct4.selectedSegmentIndex)"
        }
        if direct5.selectedSegmentIndex == 2{
            LED5 = "002"
        }else{
            LED5 = self.textField5.text! + "(direct5.selectedSegmentIndex)"
        }
        if direct6.selectedSegmentIndex == 2{
            LED6 = "002"
        }else{
            LED6 = self.textField6.text! + "(direct6.selectedSegmentIndex)"
        }
        if LED1.characters.count == 2{
            LED1="0" + LED1
        }
        if LED2.characters.count == 2{
            LED2="0" + LED2
        }
        if LED3.characters.count == 2 {
            LED3="0" + LED3
        }
        if LED4.characters.count == 2{
            LED4="0" + LED4
        }
        if LED5.characters.count == 2{
            LED5="0" + LED5
        }
        if LED6.characters.count == 2{
            LED6="0" + LED6
        }
        if LED1.characters.count + LED2.characters.count + LED3.characters.count + LED4.characters.count + LED5.characters.count + LED6.characters.count != 18{
            textLabel.text = "All MUST have 2 digits"
        }else{
            combine = LED1 + LED2 + LED3 + LED4 + LED5 + LED6
            textLabel.text = combine
        }
        let data = combine.data(using: String.Encoding.utf8)
        peripheral.writeValue(data!, for: txCharacteristic!,
            type:CBCharacteristicWriteType.withoutResponse);

    }
 }

Answer 1

在@larme的帮助下，我发现有一些swift2函数和一些swift3函数，它们将无法一起使用。这是他的全部赞扬：

]，rssi rssi：nsnumber(。再次阅读我的链接答案。检查所有没有" _"的代表方法的实际声明。而且您不能拥有Centralmanager2((...像您一样，它也不起作用。

如果@larme希望自己发布答案，我将正确地删除我的。