蓝牙didConnect或didFailToConnect未使用iOS 11.1.2调用Xcode 9.2

我遇到了 Xcode 9.2和iOS 11.1.2的问题,“diddiscover”工作正常,我的外设在我调用connect之前保存在一个数组中,但是没有调用“didConnect”或“didFailToConnect”,所以外围状态将保持不变在“连接”…
请帮忙

var manager: CBCentralManager!

override func viewDidLoad() {
    super.viewDidLoad()
    manager = CBCentralManager(delegate: self,queue: nil)
    //manager = CBCentralManager (delegate: self,queue: dispatchQueue.main)
    //manager = CBCentralManager.init(delegate: self,queue: nil,options:[:])
    //manager.delegate = self
}

func centralManager(_ central: CBCentralManager,diddiscover peripheral: CBPeripheral,advertisementData: [String : Any],RSSi RSSI: NSNumber) {
    guard let name = peripheral.name else { return }
    print("BR peripheral.name = \(name),RSSi = \(RSSI),adertisementData = \(advertisementData)")

    if (peripheral.name?.hasPrefix("testBT"))! {
        peripheralArray.append(peripheral)
        manager.connect(peripheralArray.first!,options: [:])
        print("Connecting to peripheral \(peripheral)")
    }
}

func centralManager(_ central: CBCentralManager,didConnect peripheral: CBPeripheral) {
    print("BT connected!")
    manager.stopScan()
    peripheral.delegate = self
    peripheral.discoverServices(nil)
}

func centralManager(_ central: CBCentralManager,diddisconnectPeripheral peripheral: CBPeripheral,error: Error?) {
    print("BT disconnected!")
}

func centralManager(_ central: CBCentralManager,didFailToConnect peripheral: CBPeripheral,error: Error?) {
    print("BT Failed!")
}

解决方法

尝试使变量全局：

var myPeripheral:CBPeripheral?

比,在你的代码编辑它：

if (peripheral.name?.hasPrefix("testBT"))! {
        myPeripheral = peripheral
       //HERE WRITE DELEGATE,NOT IN didConnect
        myPeripheral!.delegate = self
        //peripheralArray.append(myPeripheral)
        manager.connect(myPeripheral!,options: nil)
        print("Connecting to peripheral \(peripheral)")
    }

现在我认为它应该有效.我也会开始扫描centralManagerDidUpdateState以确保蓝牙正常工作,如：

func centralManagerDidUpdateState(_ central: CBCentralManager) {
   switch central.state{
     case .poweredOn:
        startScan() // own method where i start scanning
     case .poweredOff:
        print("blth powered off")
     case .unsupported:
        print("bltyh noit supported")
   }
}

等等还有更多状态,您可以在文档中查看.在vievDidLoad中初始化你的CBCentralManager var(manager = CBCentralManager(delegate：self,queue：nil))后调用centralManagerDidUpdateState方法

希望能帮助到你

顺便说一句,你正在制作一个阵列来存储连接的外围设备.请记住,无论何时从存储该阵列的控制器返回并返回该阵列,该阵列将再次为空.这就是为什么如果你需要你的蓝牙课程全球工作,我建议你制作一个可以实现Singleton的BluetoothService课程,你可以访问你项目中任何地方的任何状态