ios - 无法使用Tipe的参数列表(UINT64，UINT64)调用“dispatch_time”

我正在尝试将Objective_C的dispatch_time转换为swift，但出现此错误：

if !(hasPresented  != nil){
                let vc: TutorialInfoViewController = self.storyboard?.instantiateViewControllerWithIdentifier("TutorialInfoViewController") as! TutorialInfoViewController
                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue()) {
                    presentViewController(vc, animated: true, completion: nil)
                }
            }

最佳答案

试试这个。这对我有用

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(Double(NSEC_PER_SEC) * 2)), dispatch_get_main_queue(), { () -> Void in
    ptintln("it works!")
})