Ios 如何在Swift 3中的另一个闭包内设置UIButton的isSelected属性

在用户接受AlertController上的设置通知后，如果添加通知请求成功完成，我必须在选定的TableViewCell内设置UIButton。但即使代码到达了那里，它也没有响应。我认为问题在于，处理程序事件的闭包不同于主函数的闭包，因此它无法在处理程序事件闭包中正确获取UIButton对象。我如何处理这个问题？这是代码段

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
    var isAlarmSet=false
    let center = UNUserNotificationCenter.current()
    tableView.deselectRow(at: indexPath, animated: true)

    if let alarmButton = tableView.cellForRow(at: indexPath) as? BroadcastViewCell{
        var row=indexPath.row
        isAlarmSet = alarmButton.notifyButton.isSelected
        self.alarmButton=alarmButton.notifyButton
        if !isAlarmSet
        {
            //Calculating the date variable for notification time in this section i dont put it in here because it is too long.

                if (date?.timeIntervalSinceNow.sign == .minus)
                {
                    let alertController=UIAlertController(title:"UYARI" , message: "Programın süresi geçmiştir.", preferredStyle: .alert )
                    let cancelAction = UIAlertAction(title: "Tamam", style: .cancel) { (action:UIAlertAction!) in

                    }
                    alertController.addAction(cancelAction)
                    self.present(alertController, animated: true, completion: nil)

                }
                else
                {
                    let alertController=UIAlertController(title:show.programName , message: "Program başlamadan 10 dakika önce uyarı alacaksınız.", preferredStyle: .alert )
                    let cancelAction = UIAlertAction(title: "İptal", style: .cancel) { (action:UIAlertAction!) in

                    }
                    let acceptAction=UIAlertAction(title: "Tamam" , style: .default, handler: { (action:UIAlertAction) in

                        if #available(iOS 10.0, *)
                        {
                            let components = Calendar.current.dateComponents([.weekday, .hour, .minute], from: date!)

                            let trigger = UNCalendarNotificationTrigger(dateMatching: components, repeats: false)

                            //Set the request for the notification from the above
                            let request = UNNotificationRequest(
                                identifier: (show.airDate)!+(show.airTime)!,
                                content: content,
                                trigger: trigger
                            )

                            UNUserNotificationCenter.current().add(request)
                            { (error:Error?) in
                                if error != nil
                                {
                                    print(error?.localizedDescription)
                                    return
                                }
                                print("Notification Register Success")
                                alarmButton.notifyButton.isSelected=true
                                UNUserNotificationCenter.current().getPendingNotificationRequests
                                {   (requests) in
                                        self.notifications=requests
                                }

                            }
                        }

                    alertController.addAction(cancelAction)
                    alertController.addAction(acceptAction)
                    self.present(alertController, animated: true, completion: nil)
                }

            }
        }
    }

}

UI只能在主线程上更新，然后使用

DispatchQueue.main.async { 
    alarmButton.notifyButton.isSelected=true 
}

---

在事件发生后尝试重新加载数据是指tableView.reloadData吗？它没有响应。您是否尝试在DispatchQueue.main.async{alarmButton.notifyButton.isSelected=true}中设置此属性？当我将其放入DispatchQueue.main.async中时，它非常有用，非常感谢您的帮助@阿德里安·博布朗斯基