Swift ISO8601 format to Date

Question

I have the following string: 20180207T124600Z

How can I turn this into a Date object?

Here is my current code but it returns nil:

let dateString = "20180207T124600Z"
let dateFormatter = ISO8601DateFormatter()
dateFormatter.formatOptions = .withFullTime
print(dateFormatter.date(from: dateString))

Answer 1

If you have a date such as:

let isoDate = "2018-12-26T13:48:05.000Z"

and you want to parse it into a Date, use:

let isoDateFormatter = ISO8601DateFormatter()
isoDateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
isoDateFormatter.formatOptions = [
    .withFullDate,
    .withFullTime,
    .withDashSeparatorInDate,
    .withFractionalSeconds]

if let realDate = isoDateFormatter.date(from: isoDate) {
    print("Got it: \(realDate)")
}

The important thing is to provide all the options for each part of the data you have. In my case, the seconds are expressed as a fraction.