ios - 为 iOS 10+ 注册通知 - 未收到通知

Question

在 iOS 10 之前，我可以注册并接收通知。现在我没有收到。这是我的代码:

    if #available(iOS 10.0, *) {
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in
            if error == nil {

                if granted {
                    print("granted")

                    DispatchQueue.main.async {

                        UIApplication.shared.registerForRemoteNotifications()
                    }
                } else {
                    print("not granted")
                }
            } else {

            }
        }
    } else {
        // Fallback on earlier versions

        let settings: UIUserNotificationSettings = UIUserNotificationSettings(types: [UIUserNotificationType.badge, UIUserNotificationType.sound, UIUserNotificationType.alert], categories: nil)

        UIApplication.shared.registerForRemoteNotifications()
        UIApplication.shared.registerUserNotificationSettings(settings)
    }

顺便说一下，granted 有时是真的，有时是假的。我没有收到任何通知。回调与通知工作时的回调相同。

Answer 1

你的代码似乎是正确的，但你可以尝试这样的事情。

UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .sound, .alert]) {[weak self] (granted, error) in

      guard error == nil else { return }

      if granted {

        // register for remote notifications
        UIApplication.shared.registerForRemoteNotifications()

        // set delegate
        UNUserNotificationCenter.current().delegate = self

      }
 }

您将通过以下方法收到 iOS 10 的通知。

func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

    completionHandler([.alert, .sound, .badge])
}

当您点击通知时，将调用以下方法。

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
}