Save datePicker value using NSUserdefaults(xcode,swift2)

Question

How can we save the value of datepicker through nsuserdeafaults or anything.For example if a person chooses 5 pm then when he return to app he should see 5pm on the datepicker.I do not know how to include nsusersdefault into this below is the code

@IBAction func NotificationButtonTapped(sender: AnyObject)
{
    cancelLocalNotificationsWithUUID("NotificationID")

    //dateformatter for alert
    var dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "hh:mm a"
    var strDate = dateFormatter.stringFromDate(datePicker.date)

    var notifications:UILocalNotification = UILocalNotification()
    notifications.fireDate = datePicker.date
    notifications.timeZone = NSTimeZone.defaultTimeZone()
    notifications.applicationIconBadgeNumber = UIApplication.sharedApplication().applicationIconBadgeNumber + 1
    notifications.soundName = UILocalNotificationDefaultSoundName
    notifications.repeatInterval = NSCalendarUnit.CalendarUnitDay
    notifications.userInfo = ["UUID": "NotificationID"]
    notifications.alertBody = "Quote of the day"
    UIApplication.sharedApplication().scheduleLocalNotification(notifications)
  }

Answer 1

You can do the following:

var datePicker = /* Get Your Date Picker from somewhere */

// Store value using User Defaults
let currentDate = datePicker.date
NSUserDefaults.standardUserDefaults().setObject(currentDate, forKey: "Current-Date")

// Retrieve Value using User Defaults
if let date = NSUserDefaults.standardUserDefaults().objectForKey("Current-Date") as? NSDate {
    datePicker.setDate(date, animated: true)
}

Answer 2

You can convert date object to string.

Then store it in user defaults.

And again to use it, you can again convert it from string to date.

Hope this helps.