swift4.2 打印devicetoken

 

 

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import UIKit import UserNotifications   @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate {           var window: UIWindow?                 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {                     if #available(iOS 10, *){             iOS8Later()             return true         }                   if #available(iOS 8, *){             iOS10Later()             return true         }         early()           return true     }                 ///请求完成后会调用把获取的deviceToken返回给我们     func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {                   testStringToData()                   //deviceToken = 32 bytes         print("deviceToken = \(deviceToken)")                   //FIXME:打印推送64位token         print(deviceToken.map { String(format: "%02.2hhx", arguments: [$0]) }.joined() , "推送 deviceToken" )     }             func testStringToData(){         let testStr = "莎莎哈"         let testData = testStr.data(using: String.Encoding.utf8)         let newTestStr = String(data: testData ?? Data(), encoding: String.Encoding.utf8)         print("======", testStr, testData,  newTestStr)     }         }   extension AppDelegate{           func early(){         let type = UIRemoteNotificationType.alert.rawValue | UIRemoteNotificationType.badge.rawValue | UIRemoteNotificationType.sound.rawValue         UIApplication.shared.registerForRemoteNotifications(matching: UIRemoteNotificationType(rawValue: type))     }           func iOS8Later(){         let type = UIUserNotificationType.badge.rawValue | UIUserNotificationType.alert.rawValue | UIUserNotificationType.sound.rawValue         //请求授权         let set = UIUserNotificationSettings(types: UIUserNotificationType(rawValue: type), categories: nil)                   UIApplication.shared.registerUserNotificationSettings(set)                   //需要通过设备UUID 和APP bundle ID 发送请求，获取deviceToken         UIApplication.shared.registerForRemoteNotifications()     }           func iOS10Later(){             let center = UNUserNotificationCenter.current()             center.delegate = self             center.requestAuthorization(options: UNAuthorizationOptions.alert) { (isSucceseed: Bool, error:Error?) in                                   if isSucceseed == true{                     print( "成功")                 }else{                     print( "失败")                     print("error = \(error)")                 }             }             UIApplication.shared.registerForRemoteNotifications()     } }   extension AppDelegate: UNUserNotificationCenterDelegate{       }

　　

Swift3.1的DeviceToken打印的是32Bytes
https://www.jianshu.com/p/fed585eef7c1