如何取消用户通知

Question

如何禁用/取消已设置的通知？

这是我的日程安排功能。

func scheduleNotif(date: DateComponents, completion: @escaping (_ Success: Bool) -> ()) {

    let notif = UNMutableNotificationContent()

    notif.title = "Your quote for today is ready."
    notif.body = "Click here to open an app."

    let dateTrigger = UNCalendarNotificationTrigger(dateMatching: date, repeats: true)
    let request = UNNotificationRequest(identifier: "myNotif", content: notif, trigger: dateTrigger)

    UNUserNotificationCenter.current().add(request, withCompletionHandler: { error in

        if error != nil {
            print(error)
            completion(false)
        } else {
            completion(true)
        }
    })
}

Answer 1

要取消所有待处理的通知，可以使用以下方法：

UNUserNotificationCenter.current().removeAllPendingNotificationRequests()

要取消特定通知，

UNUserNotificationCenter.current().getPendingNotificationRequests { (notificationRequests) in
   var identifiers: [String] = []
   for notification:UNNotificationRequest in notificationRequests {
       if notification.identifier == "identifierCancel" {
          identifiers.append(notification.identifier)
       }
   }
   UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: identifiers)
}