CoreBluetooth didDiscoverPeripheral不会被调用斯威夫特 [英] CoreBluetooth didDiscoverPeripheral not being called in Swift

问题描述

我99％肯定我 CoreBluetooth 遵循正确设置的说明。无论我做什么，当我在我的iPad迷你运行这个程序，蓝牙是说其上。它说它正在扫描设备，但它是绝对没有找到任何设备。如果我去设备上的蓝牙菜单我看到被发现的其他设备。我初始化 CBCentralManager 。我设置 centralManagerDidUpdateState 。当那是肯定的蓝牙准备调用 centralManager.scanForPeripheralsWithServices 。这一切都被正确发生。但我的委托函数 centralManager（中央：CBCentralManager！didDiscoverPeripheral外设：CBPeripheral！advertisementData：[NSObject的：AnyObject]！RSSI：NSNumber的）永远不会被调用。我的code是非常简单的。也许我失去了一些东西，但我可以证实，我的MacBook是BTLE设备和我的iPad mini是一款BTLE设备也是如此。这里是我的code。

 进口的UIKit
进口CoreBluetooth一流的ViewController：UIViewController的，CBCentralManagerDelegate {    VAR centralManager：CBCentralManager！
    VAR blueToothReady = FALSE    覆盖FUNC viewDidLoad中（）{
        super.viewDidLoad（）
        startUpCentralManager（）
    }    FUNC startUpCentralManager（）{
        的println（初始化中央管理器）
        centralManager = CBCentralManager（代表：自我，队列：无）
    }    FUNC discoverDevices（）{
        的println（发现设备）
        centralManager.scanForPeripheralsWithServices（无，选择：无）
    }    FUNC centralManager（中央：CBCentralManager！didDiscoverPeripheral外设：CBPeripheral！advertisementData：[NSObject的：AnyObject]！RSSI：NSNumber的）{
        的println（发现\\（peripheral.name））
    }    FUNC centralManagerDidUpdateState（中央：CBCentralManager）{
        的println（检查状态）
        开关（central.state）{
            案例.PoweredOff：
            的println（CoreBluetooth BLE硬件关机）            案例.PoweredOn：
            的println（CoreBluetooth BLE硬件上电，并准备）
            blueToothReady = TRUE;            案例.Resetting：
            的println（CoreBluetooth BLE硬件复位）            案例.Unauthorized：
            的println（CoreBluetooth BLE状态是未经授权）            案例.Unknown：
            的println（CoreBluetooth BLE状态未知）;            案例.Unsupported：
            的println（CoreBluetooth BLE硬件是此平台上不支持）;        }
        如果blueToothReady {
            discoverDevices（）
        }
    }    覆盖FUNC didReceiveMemoryWarning（）{
        super.didReceiveMemoryWarning（）
        可以重新创建任何资源的处置//。
    }}
 

解决方案

我必须得到我的MacBook广告。有一次，我这样做，使用 https://github.com/mttrb/BeaconOSX 它的工作完全按照我写的它。

I am 99% sure I followed the instructions to setup CoreBluetooth correctly. No matter what I do, when I run this app on my iPad mini, the Bluetooth is saying its on. It's saying it is scanning for devices, but it is absolutely not finding any devices. If I go to the Bluetooth menu on the device I do see other devices being discovered. I initialize the CBCentralManager. I setup centralManagerDidUpdateState. When that is sure the bluetooth is ready it calls centralManager.scanForPeripheralsWithServices. All this is happening correctly. But my delegate function centralManager(central: CBCentralManager!, didDiscoverPeripheral peripheral: CBPeripheral!, advertisementData: [NSObject : AnyObject]!, RSSI: NSNumber!) never ever gets called. My code is very simple. Maybe I am missing something but I was able to confirm that my Macbook is a BTLE device and my ipad mini is a BTLE device as well. Here is my code.

import UIKit
import CoreBluetooth

class ViewController: UIViewController, CBCentralManagerDelegate {

    var centralManager:CBCentralManager!
    var blueToothReady = false

    override func viewDidLoad() {
        super.viewDidLoad()
        startUpCentralManager()
    }

    func startUpCentralManager() {
        println("Initializing central manager")
        centralManager = CBCentralManager(delegate: self, queue: nil)
    }

    func discoverDevices() {
        println("discovering devices")
        centralManager.scanForPeripheralsWithServices(nil, options: nil)
    }

    func centralManager(central: CBCentralManager!, didDiscoverPeripheral peripheral: CBPeripheral!, advertisementData: [NSObject : AnyObject]!, RSSI: NSNumber!) {
        println("Discovered \(peripheral.name)")
    }

    func centralManagerDidUpdateState(central: CBCentralManager!) {
        println("checking state")
        switch (central.state) {
            case .PoweredOff:
            println("CoreBluetooth BLE hardware is powered off")

            case .PoweredOn:
            println("CoreBluetooth BLE hardware is powered on and ready")
            blueToothReady = true;

            case .Resetting:
            println("CoreBluetooth BLE hardware is resetting")

            case .Unauthorized:
            println("CoreBluetooth BLE state is unauthorized")

            case .Unknown:
            println("CoreBluetooth BLE state is unknown");

            case .Unsupported:
            println("CoreBluetooth BLE hardware is unsupported on this platform");

        }
        if blueToothReady {
            discoverDevices()
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

解决方案

I had to get my macbook advertising. Once I did that using https://github.com/mttrb/BeaconOSX it worked exactly as I had written it.

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