Я хочу конвертировать время UTC сервера в местное время и наоборот. Вот мой код..
var isTimeFromServer = true
var time:String!
var period:String!
let timeString = "6:59 AM" //Current UTC time
if isTimeFromServer {
let index = timeString.index(timeString.startIndex, offsetBy: 5)
let twelve = timeString.substring(to: index)
var dateString:String!
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "H:mm"
let date12 = dateFormatter.date(from: twelve)!
dateFormatter.dateFormat = "h:mm a"
let date22 = dateFormatter.string(from: date12)
//print(date22)
dateString = date22
//print("dateString=\(dateString)")
time = dateString.components(separatedBy: " ")[0]
period = dateString.components(separatedBy: " ")[1]
}
else {
time = timeString.components(separatedBy: " ")[0]
period = timeString.components(separatedBy: " ")[1]
}
var hour = Int(time.components(separatedBy: ":")[0])
hour = period == "AM" ? hour : hour! + 12
let minute = Int(time.components(separatedBy: ":")[1])
let calender = NSCalendar.current
var datecomponent = DateComponents()
datecomponent.calendar = calender
datecomponent.hour = hour
datecomponent.minute = minute
if !isTimeFromServer {
// local to UTC
datecomponent.timeZone = TimeZone.current
}
else {
datecomponent.timeZone = TimeZone(abbreviation: "UTC")
}
let date = datecomponent.date
let dateFormatter = DateFormatter()
if !isTimeFromServer {
dateFormatter.dateFormat = "H:mm"
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
dateFormatter.string(from: date!)
}
else {
//UTC to local
dateFormatter.dateFormat = "h:mm a"
dateFormatter.timeZone = TimeZone.current
dateFormatter.string(from: date!)
}
Я получаю местное время
о/п: "12:52 вечера"
Но фактическое местное время и разница выходного времени составляют 23 минуты.