Get the push notification token - iOS 10, Swift 3

Question

How to get the device token from new xCode 8, Swift 3 in iOS 10?

Here is the code to register notification:

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Answer 1

One line:

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

From this tutorial.

Or a modular/encapsulated/OOP way:

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

Then you can do this:

let token = deviceToken.string