Save time (NSDate) in NSUserDefaults

Question

I am trying to save the time once the "user" reachs the Limit. So the limit is 10 for example and once he reachs this limit, i want to save the current time. Then he has to wait 1 hour to continue playing. I started doing this, but I already get an error, when I try this:

var CurrentTime = NSDate()
CurrentTime = NSUserDefaults.standardUserDefaults()

Error:

Cannot assign value of type 'NSUserDefaults' to type 'NSDate'

It seems like swift cannot save a 'NSDate' as a 'NSUserDefault'.

I think the error says quite the opposite: that you cannot save `NSUserDefault` as `NSDate`. — mustaccio, Jan 16 '16 at 19:53
The linked question it is about string but it shows how to make a date persist using NSUserDefaults — Leo Dabus, Jan 16 '16 at 20:01
Yeah could be right, but I need some help on how to solve this :) — Ketarr, Jan 16 '16 at 20:02
@LeoDabus how can I access the the linked question. I just see a that you marked my question as a duplicate. (Sorry im new here) — Ketarr, Jan 16 '16 at 20:04
http://stackoverflow.com/questions/29126731/swift-nsuserdefaults-setstringforkey — Leo Dabus, Jan 16 '16 at 20:05
Thank you! Can you explain me when I have to use .setObject after standardUserDefaults() ? — Ketarr, Jan 16 '16 at 20:08
When I save a String to NSUserDefault then I dont need .setObject for example — Ketarr, Jan 16 '16 at 20:10
That was not a duplicate question. I reopened it. Your mistake is trying to assign an `NSUserDefaults` value to a variable of type `NSDate`. — rmaddy, Jan 16 '16 at 20:22
Just use the `setObject:forKey:` method on `NSUserDefaults` to save the date. — rmaddy, Jan 16 '16 at 20:23

score 5 · Answer 1 · answered Jan 17 '16 at 03:44

NSUserDefaults.standardUserDefaults() is a kind of dictionary, you dont use the dictionary as a date, you set a date value to one of its keys:

 let userDefaults = NSUserDefaults.standardUserDefaults()    

 // save to user defaults
 userDefaults.setObject(NSDate(), forKey: "LimitReachedOnDate")

 // retrieve from user defaults
 let limitDate = userDefaults.objectForKey("LimitReachedOnDate") as? NSDate ?? NSDate.distantFuture()

Save time (NSDate) in NSUserDefaults

1 Answers1