Convert Int to date formatter followed with timezone - swift

Question

Trying to convert Int to formatted string date with supplied timezone value and formatter to expected result "12/01/2022 09:03:41 PM THA".
//Response Data.
{
"code": "THA",
"name": "Thailand Standard Time (THA) (UTC+07)",
"offset": 25200,
"utc_offset": "UTC+07",
"region": "Asia/Phnom_Penh"
}
I have picked Timezone from api response code, Here is what I have implemented.
var timezoneCode = response.timeZone.code ?? ""
if let updatedOn = self.dict?["updated_on"]?.intValue{ // i.e., 1669903421000
let dateValue = Date(milliseconds: Int64(updatedOn))
stringDate = dateToStringTimeZone(date: dateValue, dateFormat: "MM/dd/yyyy hh:mm:ss a zzz", timeZone: timezoneCode)
}
// convert Data To String with Timezone / DateFormate
func dateToStringTimeZone(date: Date, dateFormat: String, timeZone: String) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = dateFormat
dateFormatter.locale = Locale.init(identifier: "en_US_POSIX")
dateFormatter.timeZone = TimeZone.init(abbreviation: timeZone)
let dateStr = dateFormatter.string(from: date)
return dateStr
}
// Date Extension
extension Date {
var millisecondsSince1970: Int64 {
return Int64((self.timeIntervalSince1970 * 1000.0).rounded())
}
init(milliseconds: Int64) {
self = Date(timeIntervalSince1970: TimeInterval(milliseconds) / 1000)
}
}
After Trying it the above code resultant String date
"12/01/2022 07:33:41 PM GMT+5:30"
Can any one guild how to achive the formatted date value as shown below?
"12/01/2022 09:03:41 PM THA"

Answer 1

Replace "zzz" with your wanted timezone code directly in the date format string
"MM/dd/yyyy hh:mm:ss a '\(timezoneCode)'"
You also need to use another init for TimeZone, using the offset property seems to work
let offset = response.timeZone.offset
dateFormatter.timeZone = TimeZone(secondsFromGMT: offset)