I\'ve run into a weird effect that sure looks like a bug in iOS7 -- but often in the past, when I have thought I found a bug in Apple\'s APIs, it has turned out to be my own
If someone still having problems with datepicker... I'm using Swift / iOS 8 / Xcode 6.3
So solve the problem you should no use
picker.countDownDuration = NSTimeInterval
instead, use setDate
picker.setDate(NSDate, animated: true)
it works direct on viewDidLoad(), don't need to use `queues
viewDidLoad()