如何在收到推送通知時更新徽章號碼

我需要幫助完成這段代碼，以便在收到推送通知時應用會顯示徽章號碼，我可以收到推送通知，但只有應用上沒有徽章，這裏是代碼如何在收到推送通知時更新徽章號碼

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

if let aps = userInfo["aps"] as? NSDictionary, let _ = aps["alert"] as? String, let sound = aps["sound"] as? String 
     { 

      if let systemSound = SystemSoundID(sound) { 
      AudioServicesPlayAlertSound(systemSound) 
     } 

     NotificationCenter.default.post(name: Notification.Name(rawValue: SystemSetting.refreshCouponListNotification), object: nil) 

     completionHandler(UIBackgroundFetchResult.newData) 
    } 
}

來源

2017-10-06 Daniel.wu

您可以按照本教程https://eladnava.com/send-push-notifications-to-ios-devices-using-xcode-8-and-swift- 3 /和https://stackoverflow.com/questions/44490391/swift-3-turn-off-badge-alert-sound – iPatel

有兩種方法被稱爲推送通知

前景方法
背景方法

1.地面方法。通知的請求

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

獲取內容

let content = notification.request.content

2.Background方法

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

得到通知的請求的內容

let content = response.notification.request.content

獲取徽章計數

let badge = content.badge as! Int

來源

2017-10-06 04:56:40

按照以下步驟來設置徽章計數在IOS：

1.Implement邏輯在後端來計算計數，併發送通過推送通知像數：

{ "aps" : { "alert" : "You got your Push Message.", "badge" : 9 } }

2。從推送通知回覆中獲取徽章計數：

let pushContent = response.notification.request.content 
let badgeCount = content.badge as! Int

3.設置徽章計數didReceiveRemoteNotification方法：

UIApplication.sharedApplication().applicationIconBadgeNumber = badgeCount

來源

2017-10-06 05:15:10

如何在收到推送通知時更新徽章號碼

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