How to change date format from dd MMMM YYYY in swift?

Question

I need date to be convert from dd MMMM YYYY to dd-mm-yyyy.

e.g. : (01 August 2021) -> 01-09-2021

let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.dateFormat = "dd-MM-yyyy"
print( dateFormatter.date(from:response.data?[0].mbStartDate ?? ""))

The output is nil.

I've make sure that response data value is exist

How to convert it ?

And How to change "01 August 2021" to other languange? My case is change it to indonesian. So it becomes "01 Agustus 2021". How to do this too?

Thanks before

Quang Hà · Accepted Answer · 2022-03-15 03:28:01Z

1

Using DateFormatter is right way to do. First you need to convert the 01 August 2021 , String type, to Date object. Second, change dateFormat and re-format it. Here is tested code for both of your need:

func convert(_ dateString: String, from initialFormat: String, to targetFormat: String? = nil, _ locale: Locale? = nil) -> String? {
    let formatter = DateFormatter()
    formatter.dateFormat = initialFormat
    guard let date = formatter.date(from: dateString) else { return nil }
    
    if let newFormat = targetFormat {
        formatter.dateFormat = targetFormat
    }
    formatter.locale = locale
    return formatter.string(from: date)
}

print(convert("01 August 2021", from: "dd MMMM yyyy", .init(identifier: "id_ID")))
print(convert("01 August 2021", from: "dd MMMM yyyy", to: "dd-MM-yyyy"))

answered Mar 15, 2022 at 3:28

Quang Hà

4,7723 gold badges28 silver badges42 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

lauwis Over a year ago

Can you make a little changes of the return? because i need it return as date Try to directly "return date" but the output is minus 1 day from what is should be

lauwis Over a year ago

i add this and it works "formatter.timeZone = TimeZone(abbreviation: "GMT")"

Collectives™ on Stack Overflow

How to change date format from dd MMMM YYYY in swift?

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related