ios - 无法在 Swift 3.0 中将 View Controller 显示为弹出 Controller

Question

我正在尝试将我的 View Controller 添加为弹出 Controller 。但是每次我使用代码时， View 都会从底部滑动，而不是像我希望的那样。下面是我正在使用的代码

    let storyboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
    let popupVC = storyboard.instantiateViewController(withIdentifier: "WSFilterViewController") as! WSFilterViewController
    popupVC.modalPresentationStyle = UIModalPresentationStyle .popover
    popupVC.preferredContentSize = CGSize (width: 300, height:300)
    let pVC = popupVC.popoverPresentationController
    pVC?.permittedArrowDirections = UIPopoverArrowDirection.any
    pVC?.delegate = self as? UIPopoverPresentationControllerDelegate
    self.present(popupVC, animated: true, completion: nil)

我想要如图所示

我们将不胜感激。

提前致谢

Answer 1

let storyboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
    let popupVC = storyboard.instantiateViewController(withIdentifier: "WSFilterViewController")
    popupVC.modalPresentationStyle = UIModalPresentationStyle .popover
    popupVC.preferredContentSize = CGSize(width: 170, height: 130)
    popupVC.popoverPresentationController?.delegate = self
    popupVC.popoverPresentationController?.sourceView = sender as? UIView // button
    popupVC.popoverPresentationController?.sourceRect = (sender as AnyObject).bounds
    self.present(popupVC, animated: true, completion: nil)

问题有所不同，现在已经解决了。

谢谢大家