ios - 为什么我无法从 swift5 中的模拟器获取设备 token ？

Question

我正在使用 swift 开发 iOS。我的问题是我无法从模拟器获取设备 token 值。这是正常的吗？我必须做一个推送测试。推送测试只能在物理设备上进行吗？

AppDelegate

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        self.window = UIWindow(frame: UIScreen.main.bounds)
        // Override point for customization after application launch.
        //create the notificationCenter
       let center  = UNUserNotificationCenter.current()
       center.delegate = self
        // set the type as sound or badge
       center.requestAuthorization(options: [.sound,.alert,.badge]) { (granted, error) in
            // Enable or disable features based on authorization
        }
        application.registerForRemoteNotifications()
        return true
    }

    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        let token = deviceToken.map{ String(format: "%02x", $0) }.joined()
        Log.Info("Registration succeeded!")
        Log.Info("Token: \(token)")
    }

    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
        Log.Warning("Registration failed!")
    }

Answer 1

首先，您无法在模拟器上测试推送通知。为了测试推送通知，您需要物理设备。

模拟器不提供设备 token 。只有物理设备在通知的委托(delegate)方法中提供设备 token 。