Getting Remote Notification Device Token in Swift 4?

Question

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 1         


        

Answer 1

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..