How can I determine if iPhone is set for 12 hour or 24 hour time display?

Question

I thought I saw something answering this on SO recently but now I can\'t find it. Here is the code I am using now to determine if settings are for 24 hour time display. It

Answer 1

In Swift 4:

let formatString: String = DateFormatter.dateFormat(fromTemplate: "j", options: 0, locale: Locale.current)!
let hasAMPM = formatString.contains("a")