是否可以仅显示 Firebase 推送通知的徽章，而在 IOS（Swift 或 Obj-C）中没有警报？

Posted 2023-03-14

【中文标题】是否可以仅显示 Firebase 推送通知的徽章，而在 IOS（Swift 或 Obj-C）中没有警报？

【英文标题】：Is it possible to show only badge for Firebase push notification, without alert in IOS (Swift or Obj-C)?

【发布时间】：2018-03-22 12:54:52

【问题描述】：

我正在使用 Firebase 为 ios 应用发送远程推送通知。现在我需要在应用程序未运行时仅在应用程序图标中显示徽章而不发出警报。 有没有可能实现类似的东西？

谢谢

【参考方案1】：

只有在didFinishLaunchingWithOptions中设置权限时才请求UIUserNotificationTypeBadge权限

删除.alert

func requestNotificationAuthorization(application: UIApplication) 
    if #available(iOS 10.0, *) 
        UNUserNotificationCenter.current().delegate = self
        let authOptions: UNAuthorizationOptions = [.badge]
        UNUserNotificationCenter.current().requestAuthorization(options: authOptions, completionHandler: _, _ in )
     else 
        let settings: UIUserNotificationSettings = UIUserNotificationSettings(types: [.badge], categories: nil)
        application.registerUserNotificationSettings(settings)
    

【参考方案2】：

只有在向用户请求通知授权时，才应将通知设置选项设置为.badge：

let notificationCenter = UNUserNotificationCenter.current()
notificationCenter.requestAuthorization(options: [.badge], completionHandler:  [weak self] success, error in
       guard success else 
            guard error == nil else 
                 print("Error occured while requesting push notification permission. In \(#function)")
                 print("Error: \(error!.localizedDescription)")
                 return
            
            print("User has denied permission to send push notifications")
            return
    
    print("User has granted permission to send push notifications")