iOS推送通知-徽章不会显示

Question

If I receive the notification, the badge doesn't show.

Here's where I register for notifications (as you can see, badge is selected):

    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()
                        UNUserNotificationCenter.current().delegate = self
                    }
                } else {
                    print("not granted")
                }
            }
        }
    } else {
        let settings: UIUserNotificationSettings = UIUserNotificationSettings(types: [UIUserNotificationType.badge, UIUserNotificationType.sound, UIUserNotificationType.alert], categories: nil)
        UIApplication.shared.registerForRemoteNotifications()
        UIApplication.shared.registerUserNotificationSettings(settings)
    }

Here's my payload:

                notificationJsonPayload =
                    "{\"aps\" : " +
                    " {" +
                    " \"alert\": \"$(Message)\"," +
                    " \"badge\": 1" +
                    " }" +
                    "}";

The notification appears at the top but there isn't any badge on the app icon.

Answer 1

In the payload the "badge" needs to be outside alert. Example:

    {"aps": {
       "alert": {
         "title": "title",
         "body": "body"
       },
       "sound": "default",
        "badge": 8
     }
}

Answer 2

Also you need to set application badge -

UIApplication.shared.applicationIconBadgeNumber = "your badge number from response "

This badge will be hidden when badge number is 0.