CODEWITHSUNDEEP
iosswiftapple-push-notificationsdevicetoken
Sandip Gill
Sandip Gill

Reputation: 1100

Getting Remote Notification Device Token in Swift 4?

I am using this code to get the Notification Center Device token.

It was working in Swift 3 but not working in Swift 4. What changed?

if #available(iOS 10.0, *) {
    let center = UNUserNotificationCenter.current()
    center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in

    }
}

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {    
    let deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
    print(deviceTokenString)
}

Upvotes: 29

Views: 55664

Answers (9)

Farrukh Makhmudov
Farrukh Makhmudov

Reputation: 472

Not any of this solutions acceptable for me, maybe this solution will help someone, as it did to me.

/// A `String` of the Hexidecimal representation of this `Data` object
  public var hexEncodedString: String {
    // Reserver enough memory to hold all the elements
    var chars: [unichar] = []
    chars.reserveCapacity(2 * count)

    // Convert the byte data into its corresponding hex value
    for byte in self {
      chars.append(Data.utf16HexDigits[Int(byte / 16)])
      chars.append(Data.utf16HexDigits[Int(byte % 16)])
    }

    return String(utf16CodeUnits: chars, count: chars.count)
  }

Upvotes: 0

Nikunj Kumbhani
Nikunj Kumbhani

Reputation: 3924

Working Code for getting deviceToken in - iOS 11 or greater,

Swift 4 | Swift 5

Request user permission

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    
    let center = UNUserNotificationCenter.current()
    center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in

        // If granted comes true you can enabled features based on authorization.
        guard granted else { return }

        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)")
}

Upvotes: 38

Ahmad F
Ahmad F

Reputation: 31645

Assuming that you already checked that everything has been setup right, based on your code, it seems that it should works fine, all you have to do is to change the format to %02.2hhx instead of %02X to get the appropriate hex string. Thus you should get a valid one.

As a good practice, you could add a Data extension into your project for getting the string:

import Foundation

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

Usage:

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let deviceTokenString = deviceToken.hexString
    print(deviceTokenString)
}

Upvotes: 70

Ganesh Manickam
Ganesh Manickam

Reputation: 2139

To get device token 

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    // Convert token to string
    let deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
}

Hope this will help you

Upvotes: 1

Dhaval Gevariya
Dhaval Gevariya

Reputation: 920

You can use this both function for getting Device Token & FCM Token:

For device token use this: 

func application(_ application:UIApplication,didRegisterForRemoteNotificationsWithDeviceToken 
devicetoken: Data)
 {
        let deviceTokenString = deviceToken.hexString
        print(deviceTokenString)
 }

For FCM token use this:

func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
    print("Firebase registration token: \(fcmToken)")
    userDefault.set(fcmToken, forKey: "fcmToken")

}

For UUID use this:

 let deviceIds = UIDevice.current.identifierForVendor!.uuidString

Upvotes: 1

Sazzad Hissain Khan
Sazzad Hissain Khan

Reputation: 40136

Swift 5

You can use like,

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

Upvotes: 3

Pankaj Jangid
Pankaj Jangid

Reputation: 832

Use Below code for getting Device token:

 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("Device Token = \(token)")



}

Upvotes: 0

Vinoth
Vinoth

Reputation: 9734

You can get the device token like this: 

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let token = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
    print("Device Token : ",token)
}

Upvotes: 0

Uma Madhavi
Uma Madhavi

Reputation: 4917

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)
    {
        let tokenChars = (deviceToken as NSData).bytes.bindMemory(to: CChar.self, capacity: deviceToken.count)
        var tokenString = ""

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

Upvotes: 1

Related Questions