Output status message about Bluetooth in ViewController.swift - ios

Question

I'm create app only for me. Nad create it with MVC.
And i have this peace of code in my model "BTData.swift":
func centralManagerDidUpdateState(central: CBCentralManager!) {
switch (central.state)
{
case .Unsupported:
println("BLE не поддерживается")
break
case .Unauthorized:
println("Приложение не авторизовано для использования BLE")
break
case .Unknown:
println("Состояние Central Manager не известно")
break
case .Resetting:
println("Соединение с системным сервисом потеряно")
break
case .PoweredOff:
println("BLE выключено")
break
case .PoweredOn:
startScanning()
default:
break
}
}
func startScanning() {
println("Scanning...")
if let central = centralManager {
central.scanForPeripheralsWithServices(nil, options: nil)
}
}
All works good in debug. I saw this messages there.
But i can't understand how to output State status message in the label.

Answer 1

I got to do with NSNotification.
Here code for model:
func sendBTServiceNotification(BTStatus: String) {
var connectionDetails = ["Статус": BTStatus]
NSNotificationCenter.defaultCenter().postNotificationName(BLEServiceStatusNotification, object: self, userInfo: connectionDetails)
}
// Получаем состояние при обновлении Central Manager (обязательная)
func centralManagerDidUpdateState(central: CBCentralManager!) {
switch (central.state)
{
case .Unsupported:
sendBTServiceNotification("BLE не поддерживается")
break
case .Unauthorized:
sendBTServiceNotification("Приложение не авторизовано для использования BLE")
break
case .Unknown:
sendBTServiceNotification("Состояние Central Manager не известно")
break
case .Resetting:
sendBTServiceNotification("Соединение с системным сервисом потеряно")
break
case .PoweredOff:
sendBTServiceNotification("BLE выключено")
break
case .PoweredOn:
startScanning()
default:
break
}
}
func startScanning() {
sendBTServiceNotification("Сканирование...")
if let central = centralManager {
central.scanForPeripheralsWithServices(nil, options: nil)
}
}
And this code for ViewController:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
btData = BTData()
// Читаем статус BLE
NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("statusChanged:"), name: btData.BLEServiceStatusNotification, object: nil)
}
deinit {
NSNotificationCenter.defaultCenter().removeObserver(self, name: btData.BLEServiceStatusNotification, object: nil)
}
// Обновляем статус BLE
func statusChanged(notification: NSNotification) {
let userInfo = notification.userInfo as! [String: String]
let statusMsg: String! = userInfo["Статус"]
Status.text = "Статус: \(statusMsg)"
}