GCD
After amount of time
func delay(delay:Double, closure:()->()) {
dispatch_after(
dispatch_time(
DISPATCH_TIME_NOW,
Int64(delay * Double(NSEC_PER_SEC))
),
dispatch_get_main_queue(), closure)
}so use it as:
delay(0.4) {
// do stuff
}swift 3
func delay(delay:Double, closure:()->Void) {
DispatchQueue.main.after(when: DispatchTime.now()+delay, execute: closure)
}