CODEWITHSUNDEEP
iosswiftnsdateformatter
Jaceee
Jaceee

Reputation: 46

NSDateFormatter with format string outputs time with short style

We have an iOS app in production and we use some custom format for our date internal representation.

I stored a global date formatter like this:

static var InternalDateFormatter: NSDateFormatter = {
    let dateFormatter: NSDateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "yyyyMMdd HH':'mm"
    return dateFormatter
}()

With a NSDate instance of 2016-07-21T16:46:51+0000 the expected output is 20160721 16:46, but in 2 phones the output is 20160712 4:41 p.m..

The device is an iPhone 5 with iOS 9.3.
I tried installing in a device, same model and same iOS version, and the output was right.

Could someone give me a glimpse into what's happening there?

Upvotes: 2

Views: 366

Answers (1)

Evgeny Karkan
Evgeny Karkan

Reputation: 9612

You should set timezone and locale to your date formatter, try it like this:

static var InternalDateFormatter: NSDateFormatter = {
    let dateFormatter: NSDateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "yyyyMMdd HH':'mm"
    dateFormatter.timeZone   = NSTimeZone.localTimeZone()
    dateFormatter.locale     = NSLocale(localeIdentifier: "en_US_POSIX")
    return dateFormatter
}()

Using en_US_POSIX locale ID will always give you am-pm US time standard.
But you can choose any locale ID - https://gist.github.com/jacobbubu/1836273

Upvotes: 2

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