在Swift中设置多次通知

import UIKitclass ViewController: UIViewController {    @IBOutlet var myDatePicker: UIDatePicker!    @IBOutlet var mySwitch7am: UISwitch!    @IBOutlet var mySwitch8am: UISwitch!    var localNotification7am = UILocalNotification()    var localNotification8am = UILocalNotification()    var notificationsCounter = 0    func datePicker() { myDatePicker.datePickerMode = UIDatePickerMode.Date }    func datePickerDefaultDate() { myDatePicker.date = NSDate().hour > 8 ? NSDate().xDays(+1) : NSDate() }    func notificationsOptions7am() {        localNotification7am.timeZone = NSTimeZone.localTimeZone()        localNotification7am.repeatInterval = .CalendarUnitDay        UIApplication.sharedApplication().scheduleLocalNotification(localNotification7am)        localNotification7am.alertAction = "Open App"        localNotification7am.soundName = UILocalNotificationDefaultSoundName    }    func notificationsOptions8am() {        localNotification7am.timeZone = NSTimeZone.localTimeZone()        localNotification7am.repeatInterval = .CalendarUnitDay        UIApplication.sharedApplication().scheduleLocalNotification(localNotification8am)        localNotification7am.alertAction = "Open App"        localNotification7am.soundName = UILocalNotificationDefaultSoundName    }    func toggleSwitch7am(){        localNotification7am.alertBody = "Here is the seven o'clock notification"        localNotification7am.fireDate = mySwitch7am.on ? myDatePicker.date.fireDateAt7am         : NSDate().xDays(+36500)    }    func toggleSwitch8am(){        localNotification8am.alertBody = "Here is the eight o'clock notification"        localNotification8am.fireDate = mySwitch8am.on ? myDatePicker.date.fireDateAt8am         : NSDate().xDays(+36500)    }    override func viewDidLoad() {        super.viewDidLoad()        datePicker()        datePickerDefaultDate()        notificationsOptions7am()        notificationsOptions8am()    }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()    }    @IBAction func switchedOn7am(sender: AnyObject) {        toggleSwitch7am()    }    @IBAction func switchedOn8am(sender: AnyObject) {        toggleSwitch8am()    }}

扩充功能：

    import Foundation    extension NSDate {        func xDays(x:Int) -> NSDate { return NSCalendar.currentCalendar().dateByAddingUnit(.CalendarUnitDay, value: x, toDate: self, options: nil)!        }        var day: Int { return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitDay,fromDate: self).day}        var month:          Int { return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitMonth,         fromDate: self).month         }        var year:Int { return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitYear,          fromDate: self).year          }        var fireDateAt7am: NSDate    { return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: 7, minute: 0, second: 0, nanosecond: 0)! }        var fireDateAt8am: NSDate    { return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: 8, minute: 0, second: 0, nanosecond: 0)! }        func fireDateAt(hr:Int, min:Int) -> NSDate { return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: hr, minute: min, second: 0, nanosecond: 0)!        }    }