ios - 如何在 iOS 10 中为推送通知设置角标(Badge)计数？

Question

我想在收到通知时在应用程序图标上设置角标(Badge)计数。收到通知时调用以下方法。但角标(Badge)计数未设置。

     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

实际上在 iOS 10 中这两个方法被称为:

如果应用在前台:

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

如果应用程序在后台:

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

---

需要获取notification的request的content

• 前景法

  let content = notification.request.content
  

• 后台方法

  let content = response.notification.request.content
  

角标(Badge)编号在content的属性badge中

let badgeNumber = content.badge as! Int