本地警报不被称为Swift

Question

我正在尝试创建一个闹钟，在预定义的时间到来时发送推送通知。我创建了一个继承自UILocalNotification的自定义警报类，但警报未显示。 代码：

class shabbosClockViewController: UIViewController
{
    //variables****************************************************
    var localNotification: UILocalNotification = UILocalNotification()
    var alarmArray: [alarmObject] = defaults.arrayForKey("alarmArray") as [alarmObject]


    override func viewDidLoad()
    {
        super.viewDidLoad()

        var testAlarm = alarmObject(title: "test title", hour: 15, minutes: 36, day: 3)
        UIApplication.sharedApplication().scheduleLocalNotification(testAlarm)
    }


}

class alarmObject: UILocalNotification
{
    var dateComponents: NSDateComponents = NSDateComponents()

    init(title: String, hour: Int, minutes: Int, day: Int)
    {
        super.init()
        var calander: NSCalendar = NSCalendar.currentCalendar()
        calander.locale = NSLocale.currentLocale()
        var dateFormatter = NSDateFormatter()
        dateFormatter.timeStyle = .ShortStyle
        dateFormatter.timeZone = NSTimeZone.localTimeZone()

        dateComponents.hour = hour
        dateComponents.minute = minutes
        dateComponents.weekday = day
        dateComponents.weekOfMonth = calander.weekOfMonthInDate(NSDate())
        dateComponents.month = calander.monthsInDate(NSDate())
        dateComponents.year = calander.yearsInDate(NSDate())
        dateComponents.timeZone = NSTimeZone.localTimeZone()


        self.fireDate = calander.dateFromComponents(dateComponents)!
        self.alertBody = title

        println("\(self.fireDate) \n\(dateFormatter.stringFromDate(self.fireDate!))\n\(dateComponents.weekday) \n\(dateComponents.weekOfMonth)")
    }

    required init(coder aDecoder: NSCoder)
    {
        fatalError("init(coder:) has not been implemented")
    }

}

该应用程序不会崩溃或打印任何错误，但通知不会在应该出现时弹出。 println（）打印正确的日期和时间。