Question

我需要创建一个新的弹出窗口视图，因为在编译期间，Interface Builder中的锚点不可见。

根据this post，实施委托方法将强制在iPhone上使用Popover。（由于我不明白的原因）

在帖子中显示的segue上效果很好。但我无法以非分段的方式使用它。（Popover确实出现在iPad上）

请帮忙！

代码如下：

func showOptions() {
    let contentView = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("PasteOption") as NewPasteOptionViewController
    contentView.modalPresentationStyle = UIModalPresentationStyle.Popover
    contentView.preferredContentSize = CGSizeMake(200.0, 200.0)
    presentViewController(contentView, animated: true, completion: nil)
    var _popoverPresentationController = contentView.popoverPresentationController!
    _popoverPresentationController.delegate = self
    _popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirection.Any
    _popoverPresentationController.sourceView = view
    _popoverPresentationController.sourceRect = self.navigationItem.titleView!.frame
}
// this function below is never called.
func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
    return UIModalPresentationStyle.None
}

附加说明：

呈现视图控制器在另一个视图中显示为模态表单，并封装在导航控制器中。呈现的视图控制器是自定义表视图控制器。

Answer 1

似乎将行presentViewController(contentView, animated: true, completion: nil)移动到函数的末尾将解决问题。

Answer 2

let contentView  = 
PLMainNavigationManager.sharedInstance.storyboard.instantiateViewControllerWithIdentifier("PLSearchVCID") as! PLSearchVC
        contentView.modalPresentationStyle = UIModalPresentationStyle.Popover
        contentView.preferredContentSize = CGSizeMake(400.0, 500.0)
        var _popoverPresentationController = contentView.popoverPresentationController!
        _popoverPresentationController.delegate = self
        _popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirection.Any
        _popoverPresentationController.sourceView = self.view
       _popoverPresentationController.sourceRect = CGRectMake(-30, -280, 320, 400)  
        PLMainNavigationManager.sharedInstance.navigationController?.presentViewController(contentView, animated: true, completion: nil)

使用以编程方式创建的UIPopoverPresentationController强制iPhone上的popover

2 个答案: