接收fcm推送通知时设置应用程序标记

Question

我正在使用FCM进行云消息传递。当我在后台和前台应用状态下收到来自服务器的消息推送时，我想添加应用徽章。我错过了什么？主要问题是根据消息推送添加/更新/删除应用徽章，我可以接收和处理推送消息。我在这个问题上花了3天时间。请帮帮我！？*徽章号码根据内部内容的变化，如如果收到新的电子邮件邮件到gmail应用程序，徽章号码在后台和前台应用程序状态更改为未读邮件计数。

使用XCode 9.2、Swift 3.2、iOS11.6

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    FirebaseApp.configure()
    var fcmtoken: String = ""

    if #available(iOS 10.0, *) {
        // For iOS 10 display notification (sent via APNS)
        UNUserNotificationCenter.current().delegate = self

        let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
        UNUserNotificationCenter.current().requestAuthorization(
            options: authOptions,
            completionHandler: {_, _ in })
    } else {
        let settings: UIUserNotificationSettings =
            UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
        application.registerUserNotificationSettings(settings)
    }

    application.registerForRemoteNotifications()

    if let token = Messaging.messaging().fcmToken {
        fcmtoken = token
        print("FCM token: \(fcmtoken)")
    } else {
        print("FCM token: \(fcmtoken) == no FCM token")
    }

    return true
}

func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
    print("Firebase registration token: \(fcmToken)")

    Messaging.messaging().subscribe(toTopic: "all")
    print("subscribed to all topic in didReceiveRegistrationToken")

    // TODO: If necessary send token to application server.
    // Note: This callback is fired at each app startup and whenever a new token is generated.
}


func application(_ application: UIApplication, didRegister notificationSettings: UIUserNotificationSettings) {
    Messaging.messaging().subscribe(toTopic: "all")
    print("subscribed to all topic in notificationSettings")
}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {

    print("userInfo -- \(userInfo)")

}

@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

    let userInfo = response.notification.request.content.userInfo
    print("user info in didReceive response -- \(userInfo)")

}


@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

    print("called to foreground app")
}

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {

    Messaging.messaging().subscribe(toTopic: "all")
    print("subscribed to all topic in didRegisterForRemoteNotificationsWithDeviceToken")
}

Answer 1

有效载荷是您的内容：

我们刚才所做的大部分工作都替换了本地通知中的触发器。在有效负载中找到通知的内容。回到测试平台，您会发现：

{"aps":{"alert":"Enter your message","badge":1,"sound":"default"}}

理想情况下，您的JSON文件应该是这样的。你只有有效载荷的4K，所以浪费在空间上是不可取的。发送有效载荷时避免空白。然而，它们很难这样阅读。这样看起来更好：

{
 "aps":{
        "alert":"Enter your message",
        "badge":1,
        "sound":"default"
 }
}

ap是一个JSON字典，其中包含描述内容的条目。警报条目可以是像这里一样的字符串，也可以是描述设备上显示的警报内容的字典。徽章给出徽章图标上显示的数字。声音播放默认声音。您可以修改此负载以更改警报中显示的内容。由于警报可以是字典或字符串，您可以向其添加更多内容。将有效载荷更改为：

{
 "aps":{
        "alert":{
                "title":"Push Pizza Co.",
                "body":"Your pizza is ready!"
         },
            "badge":42,
            "sound":"default"
 }
}

这将添加一个标题和一条关于你的比萨饼准备好的信息。它还将把徽章改为42

{"aps":{"alert":{"title":"Push Pizza Co.","body":"Your pizza is ready!"},"badge":42,"sound":"default"}}

通知将显示标题和正文。徽章以数字42出现。

但是，您也可以在应用程序处于活动状态时更改它。注册UserNotificationType需要用户的权限。一旦获得许可，您可以将其更改为您想要的任何号码。

  application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Sound | UIUserNotificationType.Alert |
    UIUserNotificationType.Badge, categories: nil
    ))

application.applicationIconBadgeNumber = 5

你也可以这样做：

  let badgeCount: Int = 10
    let application = UIApplication.shared
    let center = UNUserNotificationCenter.current()
    center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in
        // Enable or disable features based on authorization.
    }
    application.registerForRemoteNotifications()
    application.applicationIconBadgeNumber = badgeCount

结果:

参考：https://makeapppie.com/2017/01/03/basic-push-notifications-in-ios-10-and-swift/