Swift 3 - device tokens are now being parsed as '32BYTES'

Question

I just updated from Xcode 7 to the 8 GM and amidst the Swift 3 compatibility issues I noticed that my device tokens have stopped working. They now only read \'32BYTES\'.

Answer 1

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

Answer 2

The device token has never been a string and certainly not a UTF-8 encoded string. It's data. It's 32 bytes of opaque data.

The only valid way to convert the opaque data into a string is to encode it - commonly through a base64 encoding.

In Swift 3/iOS 10, simply use the Data base64EncodedString(options:) method.

Answer 3

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

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


}

Answer 4

Get device token with proper format.

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

Answer 5

Swift 3

The best and easiest way.

deviceToken.base64EncodedString()

Answer 6

This one wasn't stated as an official answer (saw it in a comment), but is what I ultimately did to get my token back in order.

let tokenData = deviceToken as NSData
let token = tokenData.description

// remove any characters once you have token string if needed
token = token.replacingOccurrences(of: " ", with: "")
token = token.replacingOccurrences(of: "<", with: ""
token = token.replacingOccurrences(of: ">", with: "")