swift2 - UNUserNotificationCenter - 在 for 循环中只安排一个事件，swift 2.3，iOS10，

Question

我正在尝试在 for 循环中安排一系列通知。安排后我正在阅读所有待处理的通知(仅用于测试目的)。

调度(从 for 循环调用):

func scheduleNotification (event : Meeting, todaysBadgeCounter: Int) {
 if #available(iOS 10.0, *) {

        let minutesBefore = CallIn.Settings.notifyNumberOfMinutesBeforeEvent
        let notifyBefore = UNNotificationAction(identifier: NotificationActions.NotifyBefore.rawValue, title: "Notification", options: [])
        let category = UNNotificationCategory(identifier: "CALLINNOTIFICATION", actions: [notifyBefore], intentIdentifiers: [], options: [])


        UNUserNotificationCenter.currentNotificationCenter().setNotificationCategories([category])
        let content = UNMutableNotificationContent()

        content.title = NSString.localizedUserNotificationStringForKey(event.title, arguments: nil)
        if(minutesBefore <= 1){
            content.body = NSString.localizedUserNotificationStringForKey("Your \(event.title) is about to start", arguments: nil)
        }else{
            content.body = NSString.localizedUserNotificationStringForKey("You have \(event.title) in \(Int(minutesBefore)) minutes", arguments: nil)

        }
        content.sound = UNNotificationSound.defaultSound()

        //interval in seconds from current point in time to notification
        let interval : NSTimeInterval = NSTimeInterval(secondsFromNowTo(event.startTime.dateByAddingTimeInterval(-minutesBefore * 60)))


        let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: false)
        let request = UNNotificationRequest.init(identifier: "sampleRequest", content: content, trigger: trigger)

        //only schedule in the future
        if(interval > 0){
            UNUserNotificationCenter.currentNotificationCenter().addNotificationRequest(request, withCompletionHandler: { (error) in
                // handle the error if needed
                log.error(error?.localizedDescription)
                print("SCHEDULING >=iOS10:", event.title, ", interval:", interval)
            })
        }
}

阅读:

func printScheduledNotifications() {
    if #available(iOS 10.0, *) {
        print("printing scheduled notifications >=iOS10")
        UNUserNotificationCenter.currentNotificationCenter().getPendingNotificationRequestsWithCompletionHandler({ (notifications) in
            print("count", notifications.count)
            for notification in notifications{

                print(notification.description)
            }
        })
    }

后一种方法中的“通知”是 UNNotificationRequest 数组，但该数组的计数始终返回 1，并且预定事件 - 只是我提供给 schedule 方法的列表中的最后一个事件。

在调度期间，我还会打印所有已调度的事件和时间间隔(以确保它在将来)，并且我确实获得了我想要调度的所有事件的正确日志，但不知何故，每个下一个事件看起来都覆盖了前一个一。我究竟做错了什么？

Answer 1

问题实际上不是 UNUserNotificationCenter，而是请求的标识符，在我的代码中，它在 for 循环的整个迭代中保持不变。当我向它添加唯一 id 时，它起作用了。

let identifier = NSString.localizedUserNotificationStringForKey("sampleRequest\(event.title)", arguments: nil)

与往常一样，问题比看起来容易得多。