斯威夫特UNUserNotification不健全引发

Question

这是我UNUserNotification

 func scheduleNotification() { 
     UNUserNotificationCenter.current().getNotificationSettings { (notificationSettings) in 
     switch notificationSettings.authorizationStatus { 
     case .notDetermined: 
      self.requestAuthorization(completionHandler: { (success) in 
       guard success else { return } 

       // Schedule Local Notification 
       self.scheduleLocalNotification() 
      }) 

     case .authorized: 
      // Schedule Local Notification 
      self.scheduleLocalNotification() 


     case .denied: 
      print("Application Not Allowed to Display Notifications") 
     } 
     } 
    } 

    private func scheduleLocalNotification() { 
     // Create Notification Content 
     let notificationContent = UNMutableNotificationContent() 

     // Configure Notification Content 
     notificationContent.title = "Hello" 
     notificationContent.body = "" 

     // Add Trigger 
     let notificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: 10.0, repeats: false) 

     // Create Notification Request 
     let notificationRequest = UNNotificationRequest(identifier: id, content: notificationContent, trigger: notificationTrigger) 

     // Add Request to User Notification Center 
     UNUserNotificationCenter.current().add(notificationRequest) { (error) in 
      if let error = error { 
       print("Unable to Add Notification Request (\(error), \(error.localizedDescription))") 
      } 
     } 
    } 

    private func requestAuthorization(completionHandler: @escaping (_ success: Bool) ->()) { 
     // Request Authorization 
     UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (success, error) in 
      if let error = error { 
       print("Request Authorization Failed (\(error), \(error.localizedDescription))") 
      } 

      completionHandler(success) 
     } 
    } 

它安排了通知呼叫10秒后的代码和它的作品，通知被呈现在锁屏上，问题是，它不会触发任何声音/振动。
根据要求我设置这些选项[.alert, .sound, .badge]，我错过了什么？
p.s.我不愿意设置自定义音效，预设一个足够

Answer 1

你缺少一个将播放声音的关键因素：

notificationContent.sound = UNNotificationSound.default() 

包括UNMutableNotificationContent应该解决您的问题。