How to convert 10digit int to date [closed]

How to convert 1640704675 into date.

extension Date {
    var millisecondsSince1970:Int64 {
        return Int64((self.timeIntervalSince1970 * 1000.0).rounded())
    }

    init(milliseconds:Int64) {
        self = Date(timeIntervalSince1970: TimeInterval(milliseconds) / 1000)
    }
}

//Convert date to another formate.
func dateConvertion(date: Date, dateFormat: String) -> String {
    let dateFormater = DateFormatter()
    dateFormater.dateFormat = dateFormat
    dateFormater.locale = Locale(identifier: "en_US_POSIX")
    let dateStr = dateFormater.string(from: date)
    return dateStr
}

Try to convert 10 digit Int to Date //

if let modifiedDate = callValue?.updatedDate{
        let dateValue = String(modifiedDate).toDate(.isoDateTimeMilliSec) ?? Date()
        let finalDate = dateConvertion(date: dateValue, dateFormat: formaterMonthDateyear)
        print("finalDate \(finalDate)")
}

Its shown current date value when converting int value to date

As mentioned in comment, it looks like your integer value is a number of seconds since 1970, not milliseconds. Just use the existing init(timeIntervalSince1970: TimeInterval) method, and cast your integer to a TimeInterval:

And call it like this:

print(Date(timeIntervalSince1970: TimeInterval(1640704675)))

As mentioned in a comment, that displays 2021-12-28 15:17:55 +0000, which looks like a recent, valid date.