Detect if time format is in 12hr or 24hr format

Question

Is there any way to detect if the current device of the app uses 12h our 24h format, so that I can use one NSDateFormatter for 12h and one for 24h depending on the users lan

Answer 1

Here is the Swift version:

func using12hClockFormat() -> Bool {

    let formatter = NSDateFormatter()
    formatter.locale = NSLocale.currentLocale()
    formatter.dateStyle = NSDateFormatterStyle.NoStyle
    formatter.timeStyle = NSDateFormatterStyle.ShortStyle

    let dateString = formatter.stringFromDate(NSDate())
    let amRange = dateString.rangeOfString(formatter.AMSymbol)
    let pmRange = dateString.rangeOfString(formatter.PMSymbol)

    return !(pmRange == nil && amRange == nil)
}