swift - 尝试呈现 * 其 View 不在窗口层次结构中

Question

我在 AppDelegate 中使用以下代码在选择按钮时在应用程序中显示弹出窗口，我最终会将其移动到标签超链接但目前只是测试。

    let storyboard = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("test") as! ViewController
    let popOverVC = UIStoryboard(name:"Main", bundle: nil).instantiateViewControllerWithIdentifier("sbPopUpID") as! PopUpViewController
    storyboard.addChildViewController(popOverVC)
    popOverVC.view.frame = storyboard.view.frame
    storyboard.view.addSubview(popOverVC.view)
    popOverVC.didMoveToParentViewController(storyboard)
    self.window?.rootViewController?.presentViewController(storyboard, animated: true, completion: nil)

我第一次选择一个按钮时它工作正常，但是在所有后续按钮按下时显示以下错误。

2016-10-28 11:27:40.551 testfordeeplinks[20496:104536] Warning: Attempt to present on whose view is not in the window hierarchy!

Answer 1

对于以后遇到这个问题的人，我就是这样解决的；

    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
    appDelegate.window?.rootViewController = storyboard