ios - 在 Swift 中显示和关闭模态视图 Controller

Question

当按下按钮时，我想通过使用模式转换样式 CoverVertical 在两个 View Controller 之间切换，然后关闭它。那里有很多关于如何在 objective-c 中执行此操作的信息，但在 Swift 中找不到任何好的信息。到目前为止，我已经这样做了，但我认为这是不正确的:

 @IBAction func insertStatus(sender: UIButton) {

         var StatusVC: StatusViewController = StatusViewController()
    var modalStyle: UIModalTransitionStyle = UIModalTransitionStyle.CoverVertical
    StatusVC.modalTransitionStyle = modalStyle
    self.presentViewController(StatusVC, animated: true, completion: nil)

    }

我这样使用的 Dismiss 也不起作用:

@IBAction func statusSaved(sender: UIBarButtonItem) {

        self.dismissViewControllerAnimated(false, completion: { () -> Void in
            let usersVC: UsersViewController = self.storyboard?.instantiateViewControllerWithIdentifier("UsersViewController") as UsersViewController
       })
    }

Answer 1

swift 5:

present(UIViewController(), animated: true, completion: nil)

dismiss(animated: true, completion: nil)

---

swift 2.2:

self.presentViewController(true, completion: nil)

隐藏/关闭 View Controller :

self.dismissViewControllerAnimated(true, completion: nil)