ios - PopOver View Controller 覆盖全屏

Question

这是我的 PopOver 代码。我有两个 View Controller 。我在 Messaging View controller 中显示 PopOver，需要通过管道传输的 view controller 是 PreferencesView controller。 Storyboard Id 也是相同的 Preferences View Controller 。 popOver 成功但始终覆盖整个屏幕。即使 UIModalPresentationStyle.None。我在这里做错了什么？

 func optionClicked(sender:UIBarButtonItem)
{
    print(")show set preference and set reminder option")


    let preferenceAction: UIAlertAction = UIAlertAction(title: "Set preferences", style: .Default) { action -> Void in
        self.optionChoosed(true)
        }
    let reminderAction: UIAlertAction = UIAlertAction(title: "Set reminder", style: .Default) { action -> Void in
        self.optionChoosed(false)
    }
    let actionSheetController: UIAlertController = UIAlertController(title: kAlertTitle, message: "What you want to do?", preferredStyle: .ActionSheet)

    let cancelAction: UIAlertAction = UIAlertAction(title: "Cancel", style: .Cancel) { action -> Void in
    }
    actionSheetController.addAction(preferenceAction)
    actionSheetController.addAction(reminderAction)
    actionSheetController.addAction(cancelAction)
    self.presentViewController(actionSheetController, animated: true, completion: nil)
}

func optionChoosed(isSetPreference:Bool)
{


    if(isSetPreference)
    {
    print("Set preference")

        let storyboard : UIStoryboard = UIStoryboard(name: "Messaging", bundle: nil)
        let vc = storyboard.instantiateViewControllerWithIdentifier("PreferencesViewController") as! PreferencesViewController
        vc.modalPresentationStyle = UIModalPresentationStyle.Popover
        let popover: UIPopoverPresentationController = vc.popoverPresentationController!
        popover.barButtonItem?.action = "isSetPreference"
        popover.delegate = self
        presentViewController(vc, animated: true, completion:nil)


    }

    func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
        return UIModalPresentationStyle.None

    }
    func dismiss() {
        self.dismissViewControllerAnimated(true, completion: nil)
    }

Answer 1

我猜你是从 Storyboard 中进行转场。如果您这样做，请从 Storyboard 中删除 segue 并为栏按钮项目创建一个操作并将此代码放在那里。

    let storyboard : UIStoryboard = UIStoryboard(name: "Messaging", bundle: nil)
    let vc = storyboard.instantiateViewControllerWithIdentifier("PreferencesViewController") as! PreferencesViewController
    vc.modalPresentationStyle = UIModalPresentationStyle.Popover
    let popover: UIPopoverPresentationController = vc.popoverPresentationController!
    vc.preferredContentSize = CGSize(width: 200, height: 200)
    popover.barButtonItem = sender as? UIBarButtonItem
    popover.delegate = self
    presentViewController(vc, animated: true, completion:nil)