how to send data from notification to application - ios

Question

I use this tutorial for notifications in my app http://www.appcoda.com/local-notifications-ios8/
Each notification has action - Edit. I add Observer for it, in viewDidLoad() method:
NSNotificationCenter.defaultCenter().addObserver(self, selector: "handleModifyListNotification", name: "modifyListNotification", object: nil)
When press button Edit in notification, app call this method:
func handleModifyListNotification() {
}
for assign notification I use:
func scheduleLocalNotification() {
var dateComp:NSDateComponents = NSDateComponents()
dateComp.year = 2015;
dateComp.month = 02;
dateComp.day = 24;
dateComp.hour = 14;
dateComp.minute = 34;
dateComp.timeZone = NSTimeZone.systemTimeZone()
var calender:NSCalendar? = NSCalendar(calendarIdentifier: NSGregorianCalendar)
var date:NSDate = calender!.dateFromComponents(dateComp)!
var localNotification = UILocalNotification()
localNotification.fireDate = fixNotificationDate(date)
localNotification.alertBody = "Hey, you must go shopping, remember?"
localNotification.alertAction = "View List"
localNotification.category = "shoppingListReminderCategory"
UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
}
But how can I send data to this method to know which notification call this method?

Answer 1

Declare your notification like following,
NSNotificationCenter.defaultCenter().addObserver(self, selector: "handleModifyListNotification:", name: "modifyListNotification", object: nil)
with colon in Selector.
and Post your notification like,
NSNotificationCenter.defaultCenter().postNotificationName("modifyListNotification", object: "Your Object Value")
and your function should be,
func handleModifyListNotification(notification: NSNotification) {
NSLog("Object is %#", notification.valueForKey("object") as String!)
}