Get the push notification token - iOS 10, Swift 3

Question

How to get the device token from new xCode 8, Swift 3 in iOS 10?

Here is the code to register notification:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {    

    DispatchQueue.main.async {
        let settings = UIUserNotificationSettings(types: [.badge, .sound, .alert], categories: nil)
        UIApplication.shared.registerUserNotificationSettings(settings)
    }
    return true
}

func application(_ application: UIApplication, didRegister notificationSettings: UIUserNotificationSettings) {

    if notificationSettings.types != UIUserNotificationType() {
        application.registerForRemoteNotifications()
    }
}

Here i get the token, but i get the following error

Cannot invoke initializer for type 'UnsafePointer<CChar>' with an argument list of type '(UnsafeRawPointer)':

---

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {

    let chars = UnsafePointer<CChar>((deviceToken as NSData).bytes)
    var token = ""

    for i in 0..<deviceToken.count {
        token += String(format: "%02.2hhx", arguments: [chars[i]])
    }

    print("Registration succeeded!")
    print("Token: ", token)
}

Can anyone help me solve it?

Answer 1

This method may solve your problem in iOS 10 and greater:

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    var token = ""
    for i in 0..<deviceToken.count {
        token = token + String(format: "%02.2hhx", arguments: [deviceToken[i]])
    }
    print(token)
}

Answer 2

var pushToken = String(format: "%@", deviceToken as CVarArg)
pushToken = pushToken.trimmingCharacters(in: CharacterSet(charactersIn: "<>"))
pushToken = pushToken.replacingOccurrences(of: " ", with: "")

Answer 3

Swift 3 example taken from raywenderlich.com.

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data){
    let tokenParts = deviceToken.map { data -> String in
        return String(format: "%02.2hhx", data)
    }  
    let token = tokenParts.joined()
    print(token)
}