如何在iOS 10中设置徽章计数以进行推送通知？

Question

I want to set badge count on app icon when notification recieved.Below method is called when notification is recieved.But the badge count does not set.

     func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {

        var userData = userInfo as NSDictionary? as? [AnyHashable: Any] ?? [:]
        var aps  = userData["aps"] as! NSDictionary
        var badge = aps["badge"]
        print("data is \(badge!)")
        UIApplication.shared.applicationIconBadgeNumber = badge! as! Int
        if #available(iOS 10.0, *) {
          let content = UNMutableNotificationContent()
          content.badge = 10
        } else {
          // Fallback on earlier versions
        }
        // your badge count
}

Answer 1

Actually in iOS 10 these two methods are called:

If the app is in the foreground:

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

If the app is in the background:

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

---

You need to get the content of the request of the notification

• foreground method

   let content = notification.request.content 

• background method

   let content = response.notification.request.content 

The badge number is in the property badge of content

let badgeNumber = content.badge as! Int

Answer 2

I was missing the authorization for badge.I added badge in code

 if #available(iOS 10.0, *) {
      let center = UNUserNotificationCenter.current()
      center.requestAuthorization(options: [.alert, .sound,.badge]) { (granted, error) in
        // actions based on whether notifications were authorized or not
      }
      application.registerForRemoteNotifications()
    }

I added this in didFinishLaunchWithOptions