nil NSDate from DateFormatter

Question

I'm trying to convert String to NSDate with this code

let dateString = data as! String
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
let date = formatter.date(from: dateString)
let Calendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)
let unitFlags: NSCalendar.Unit = [.hour, .day, .month, .year]
let components = Calendar?.components(unitFlags, from: date!)

and dateString is "2017-04-03T18:50:34.3042751+04:30" but I'm getting fatal error: unexpectedly found nil while unwrapping an Optional value for the last line. What am I doing wrong?

`"2017-04-03T18:50:34.3042751+04:30"` should be `"yyyy-MM-dd'T'HH:mm:ss.SSSSSSSXXXXX"` — Leo Dabus, Apr 03 '17 at 14:29
Don't throw force unwraps into your code - if there's a chance a value could be nil, handle it correctly. — Ashley Mills, Apr 03 '17 at 14:33
I'm currently debugging later I will do that thanks @AshleyMills — Amir_P, Apr 03 '17 at 14:35
The problem it is the missing milliseconds. Z or ZZZZZ would work also. check the image reference from the answer at the link above. I prefer XXXXX or ZZZZZ because it has the `:` at the timezone — Leo Dabus, Apr 03 '17 at 14:37

score 0 · Accepted Answer · edited May 23 '17 at 12:02

0

Change your date format as below

formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SZ"

Edit: If you want more precision the you can add two more S e.g.

formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"

S will work upto 3 times after that it won't work. If you need to parse fractional seconds after 3 decimal places then you need to see this thread : https://stackoverflow.com/a/27412262/468724

edited May 23 '17 at 12:02

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answered Apr 03 '17 at 14:32

Inder Kumar Rathore

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be aware that Z doesn't match the original dateString. If you get a string from the date using it would result in `"-0300"` instead of `"-03:00"` – Leo Dabus Apr 03 '17 at 14:49
Yes @LeoDabus you're right, but I guess OP just needs to parse the date – Inder Kumar Rathore Apr 03 '17 at 14:53

nil NSDate from DateFormatter

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