CODEWITHSUNDEEP
swiftxcodepush-notificationswift3xcode8
sanjeet
sanjeet

Reputation: 1508

Unable to convert correct device token in swift 3.0

Using swift 3.0, I am trying to convert a deviceToken (data) to string, but it is not returning the correct string.

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

    let tokenString = deviceToken.reduce("") { string, byte in
        string + String(format: "%02X", byte)
    }
    print("token: ", tokenString)

}

Does anyone know what I am doing wrong?

Upvotes: 0

Views: 255

Answers (3)

Deepak Kumar Sahu
Deepak Kumar Sahu

Reputation: 453

 var token = NSData.init(data: deviceToken).description
    token = token.replacingOccurrences(of: "<", with: "")
    token = token.replacingOccurrences(of: " ", with: "")
    token = token.replacingOccurrences(of: ">", with: "")
    token = String.init(describing: token)

    print(token)

Hope this will help you to get exact devicetoken for sending to your server.

Upvotes: 0

user5751046
user5751046

Reputation:

You can convert it using this method as device tokens is an array of UInt8 in the form of bytes you have describe every byte.

let token = String(describing: deviceToken as CVarArg).replaceCharacters("<> ", toSeparator: "")

I have created extension to String as I use replaceCharacters() frequently

extension String { func replaceCharacters(_ characters: String, toSeparator: String) -> String { let characterSet = CharacterSet(charactersIn: characters) let components = self.components(separatedBy: characterSet) let result = components.joined(separator: toSeparator) return result } }

Upvotes: 0

vadian
vadian

Reputation: 285180

In Swift 3 it's a bit easier because Data behaves like an array:

let tokenString = deviceToken.map{ String(format: "%02X", $0) }.joined()

Upvotes: 3

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