我正在使用：
var alarm = NSUserNotification()
var currentTime = NSDate()
alarmTime = currentTime.dateByAddingTimeInterval(60)
alarm.deliveryDate = alarmTime
NSUserNotificationCenter.defaultUserNotificationCenter().scheduleNotification(alarm)
为了得到一个通知，将自当前时间触发一个小时，问题是我想第一个完成后应用自动设置其他报警。 的NSTimer似乎并不像一旦应用进入它杀死定时器背景会因为工作。 我能做些什么来实现这一目标？ 我可以捎带另一种方法到NSUserNotification
编辑：它也需要是动态的，我不能只设置通知的重复变量，因为我需要能够走多远切换出报警每次重置时间就越长。
你只需要设置你的deliveryRepeatInterval和deliveryTimeZone，如下：
// set your deliveryTimeZone to localTimeZone
alarm.deliveryTimeZone = NSTimeZone.localTimeZone()
// The date components that specify how a notification is to be repeated.
// This value may be nil if the notification should not repeat.
// alarm.deliveryRepeatInterval = nil
// The date component values are relative to the date the notification was delivered.
// If the calendar value of the deliveryRepeatInterval is nil
// the current calendar will be used to calculate the repeat interval.
// alarm.deliveryRepeatInterval?.calendar = NSCalendar.currentCalendar()
// to repeat every day, set .deliveryRepeatInterval.day to 1.
alarm.deliveryRepeatInterval?.day = 1
// to repeat every hour, set .deliveryRepeatInterval.hour to 1.
alarm.deliveryRepeatInterval?.hour = 1
alarm.deliveryDate = NSDate().dateByAddingTimeInterval(60)
NSUserNotificationCenter.defaultUserNotificationCenter().scheduleNotification(alarm)
