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?

Possible duplicate of http://stackoverflow.com/questions/37956482/registering-for-push-notifications-in-xcode-8-swift-3-0 — Eric Aya, Sep 19 '16 at 09:15
You can follow this link its in objective C but you can get some idea http://stackoverflow.com/questions/39572897/ios-10-push-notification-issue-solved — Darshan Mothreja, Sep 19 '16 at 14:10

Chirag Shah · Answer 1 · 2018-05-24T06:53:47.953

38

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)
}

edited May 24 '18 at 06:53

answered Sep 28 '16 at 10:10

Chirag Shah

3,034
1
30
61

I didn't downvote. But perhaps because there is no explanation for why/how `Data` needs to be converted to a `String` like this – mfaani Feb 27 '19 at 22:56

score 12 · Answer 2 · answered Sep 22 '16 at 14:57

12

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

answered Sep 22 '16 at 14:57

Emre

295
2
9

score 6 · Answer 3 · answered Jun 30 '17 at 18:29

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)
}

ScottyBlades · Answer 4 · 2019-12-24T22:32:58.833

One line:

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let apnsDeviceToken = deviceToken.map {String(format: "%02.2hhx", $0)}.joined()
}

From this tutorial.

Or a modular/encapsulated/OOP way:

extension Data {
  var string: String {
    return map {String(format: "%02.2hhx", $0)}.joined()
  }
}

Then you can do this:

let token = deviceToken.string

score 3 · Answer 5 · edited Sep 18 '17 at 09:22

3

The below snnipet is working with Eric Aya solution :

let token = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})

Thanks for all help :)

edited Sep 18 '17 at 09:22

Jigar Tarsariya

3,189
3
14
38

answered Oct 19 '16 at 08:44

user831098

1,803
6
27
47

score 3 · Answer 6 · answered Oct 24 '16 at 16:39

Faced the same problem, this is the only thing that helped me:

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let token = String(format: "%@", deviceToken as CVarArg)
        .trimmingCharacters(in: CharacterSet(charactersIn: "<>"))
        .replacingOccurrences(of: " ", with: "")
}

Nikunj Kumbhani · Answer 7 · 2018-08-03T09:02:54.800

Working Code for getting push notification token - iOS 11 or greater, Swift 4

Request user permission

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

    let notificationTypes: UIUserNotificationType = [UIUserNotificationType.alert,UIUserNotificationType.badge, UIUserNotificationType.sound]
    let pushNotificationSettings = UIUserNotificationSettings(types: notificationTypes, categories: nil)

    application.registerUserNotificationSettings(pushNotificationSettings)
    application.registerForRemoteNotifications()

    return true        
}

Getting device token

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

    let token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
    print(token) 
}

In case of error

func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {

    print("i am not available in simulator \(error)")
}

score 0 · Answer 8 · edited Sep 18 '17 at 09:27

0

It could work:

let chars = UnsafePointer<CChar>((deviceToken as NSData).bytes.assumingMemoryBound(to:CChar.self))

Thanks!

edited Sep 18 '17 at 09:27

Jigar Tarsariya

3,189
3
14
38

answered Sep 26 '16 at 05:04

user6880304

1

score 0 · Answer 9 · answered Jul 26 '19 at 11:05

Code from Mixpanel library

    let tokenChars = (deviceToken as NSData).bytes.assumingMemoryBound(to: CChar.self)
    var tokenString = ""
    for i in 0..<deviceToken.count {
        tokenString += String(format: "%02.2hhx", arguments: [tokenChars[i]])
    }

score 0 · Answer 10 · answered May 09 '21 at 19:44

Since you may need this token in different methods (like firebase, web engage, branch, etc), you can use a custom class to initial an APNS from the data containing both data and string

public class APNS {
    public init(deviceToken data: Data) {
        self.data = data
        self.string = data.map { data in String(format: "%02.2hhx", data) } .joined()
    }

    public let data: Data
    public let string: String
}

then you can use it anywhere you need:

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let token = APNS(deviceToken: deviceToken)
    print(token.string)
}

Get the push notification token - iOS 10, Swift 3

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