ISO8601DateFormatter doesn't parse ISO date string

Question

I\'m trying to parse this

2017-01-23T10:12:31.484Z

using native ISO8601DateFormatter class provided by iOS 1

Answer 1

For people that are not ready to go to iOS 11 yet, you can always create your own formatter to handle milliseconds, e.g.:

extension DateFormatter {
    static var iSO8601DateWithMillisec: DateFormatter {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
        return dateFormatter
    }
}

Usage:

let formater = DateFormatter.iSO8601DateWithMillisec
let date = formater.date(from: "2017-01-23T10:12:31.484Z")!
print(date) // output: 2017-01-23 10:12:31 +0000

It is slightly more elegant than writing a regex to strip out the milliseconds from the input string.