Swift Nsdateformatter Not Working

DateFormatter not working in ios By setting

I found the answer of this question. Sorry for the delay to post the answer. You need to enter NSLocale to the formatter as I have done in this example.

func dateFromstring(dateString:String)->NSDate {
    //print(date)
    var dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "dd-MM-yyyy'T'HH:mm:ssZZZ"

    //DateFormatter To change By chakshu
    var enUSPOSIXLocale:NSLocale=NSLocale(localeIdentifier: "en_US_POSIX")
    dateFormatter.locale=enUSPOSIXLocale
    dateFormatter.timeZone = NSTimeZone(name: "GMT")
    //dateFormatter.timeZone = NSTimeZone.localTimeZone()

    var date = dateFormatter.dateFromString(dateString)
    //print(date)
    return date!
}

Hope this help.
Thanks

Date formatting not working in Swift 3

Date().toString() // convert date to string with userdefined format.

extension Date {
        func toString() -> String {
            let dateFormatter = DateFormatter()
            dateFormatter.dateFormat = "MMMM dd yyyy"
            return dateFormatter.string(from: self)
        }
    }

swift NSDateFormatter not working

The 24-hour format is "HH", not "hh".

The reason that it works in the Playground may be
that user defined settings can override the 12/24-format choice, compare
What is the best way to deal with the NSDateFormatter locale "feechur"?.
To be on the safe side, set the "en_US_POSIX" locale for the date formatter:

formatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")

// Swift 3:
formatter.locale = Locale(identifier: "en_US_POSIX")

Swift DateFormatter properties not changing

I think you misunderstand what setLocalizedDateFormatFromTemplate does. Its documentation says:

Calling this method is equivalent to, but not necessarily implemented as, setting the dateFormat property to the result of calling the dateFormat(fromTemplate:options:locale:) method, passing no options and the locale property value.

Now what does dateFormat(fromTemplate:options:locale:) do? Lets see:

Return Value

A localized date format string representing the date format components given in template, arranged appropriately for the locale specified by locale.

The returned string may not contain exactly those components given in template, but may—for example—have locale-specific adjustments applied.

So dateFormat(fromTemplate:options:locale:) tries to localise the template to a specified locale. If no locale is specified, it uses Locale.current. For example:

// this produces "MM/dd/yyyy"
DateFormatter.dateFormat(fromTemplate: "yyyy dd MM", options: 0, locale: Locale(identifier: "en-US"))

That explains why it removes all the quoted strings in your format, because the localisation engine doesn't recognise your quoted strings, so to produce a "localised" version of your date format, the best it can do is to remove them. As far as it is concerned, the quoted strings could be in a different language!

So it's not that setLocalizedDateFormatFromTemplate did not change dateFormat. It did change it to "MMMM d, h:mm a", which is what iOS thinks is the best "localised" version of the format

"'Deliver on' MMMM d 'at' h:mm a 'sharp'"

In this situation, you should set dateFormat directly, rather than setLocalizedDateFormatFromTemplate, as you don't want a localised date format.

Swift 5 - Dateformatter not working as expected

Date has no information about time zone, and default string representation is using a greenwich one. You can see it +0000 part in your string.

You can get description for your own time zone like this:

date.description(with: .current)

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