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

try this

if #available(iOS 10.0, *) {
   let deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
}

Answer 2

Try this:

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

   let token = String(data: deviceToken.base64EncodedData(), encoding: .utf8)?.trimmingCharacters(in: CharacterSet.whitespaces).trimmingCharacters(in: CharacterSet(charactersIn: "<>")) 
}

Answer 3

I just did this,

let token = String(format:"%@",deviceToken as CVarArg).components(separatedBy: CharacterSet.alphanumerics.inverted).joined(separator: "")

it gave the result same as,

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

Answer 4

Here is my Swift 3 extension to get a base-16 encoded hex string:

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

Answer 5

I had the same problem. This is my solution:

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)
}