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Mugunthan Balakrishnan
1,167 Pointshow to set to a certain time zone on swift
the below code works fine and it is a timer function which counts down to midnight. how can i go about locking this to a time zone. where it will still count down to the same time even if the time zone on the phone changes
func updateTimeGMT(){
let now = NSDate()
let timezoneLK = NSTimeZone(forSecondsFromGMT: 19800)
let calendar = NSCalendar.autoupdatingCurrentCalendar()
//let calendar = NSCalendar()
calendar.componentsInTimeZone(timezoneLK, fromDate: now)
var startOfDay = NSDate?()
var lengthOfDaySeconds : NSTimeInterval = 0
if (calendar.rangeOfUnit(NSCalendarUnit.CalendarUnitDay, startDate:&startOfDay, interval:&lengthOfDaySeconds, forDate: now)) {
let endOfDay = startOfDay?.dateByAddingTimeInterval(lengthOfDaySeconds)
println("\(now) : \(endOfDay!)")
if let secondsUntilEndOfDay = endOfDay?.timeIntervalSinceDate(now) {
var timeLeft = secondsUntilEndOfDay
let hours = floor(timeLeft / 3600.0)
timeLeft -= (hours * 3600.0)
let minutes = floor(timeLeft / 60.0)
timeLeft -= (minutes * 60.0)
let seconds = floor(timeLeft)
timeLeft -= seconds
let fraction = floor(timeLeft * 100)
let strHours = String(format: "%02d", UInt(hours))
let strMinutes = String(format: "%02d", UInt(minutes))
let strSeconds = String(format: "%02d", UInt(seconds))
let strFraction = String(format: "%02d", UInt(fraction))
countingLabel.text = "\(strHours) : \(strMinutes) : \(strSeconds) : \(strFraction)"
}
}
}
1 Answer
