取消弹出视图

Question

我已经以编程方式添加了一个弹出视图，当我单击弹出窗口中的按钮时，它将显示另一个警报视图控制器。 但是问题是我无法取消最初添加的弹出视图。 它仍然显示在警报视图的后面。 谁能帮我解决这个问题？

使用以下代码，我创建了弹出视图。

   let storyboard : UIStoryboard = UIStoryboard(name: "Main",bundle: nil)
        let menuViewController: PopupViewController = storyboard.instantiateViewControllerWithIdentifier("Popup") as! PopupViewController
        menuViewController.modalPresentationStyle = UIModalPresentationStyle.Popover
        menuViewController.preferredContentSize = CGSizeMake(300, 275)

        let popoverMenuViewController = menuViewController.popoverPresentationController
        popoverMenuViewController?.delegate = self
        popoverMenuViewController?.sourceView = self.view
        // If wants the arrow head remove the below line code
        popoverMenuViewController?.permittedArrowDirections = UIPopoverArrowDirection()
        popoverMenuViewController?.sourceRect = CGRectMake(CGRectGetMidX(self.view.bounds), CGRectGetMidY(self.view.bounds),0,0)
        presentViewController(menuViewController,animated: true,completion: nil)

Answer 1

那可以帮助你

let alertController = UIAlertController(title: "My alert", message: "some text...", preferredStyle: .Alert)
// .Default will dismiss the alert automatically
let myAlertAction = UIAlertAction(title: "Alert", style: .Default, handler: { (UIAlertAction) in
    // Some stuff, present your other alert
    // self.myMainViewController.presentViewController...
 })
alertController.addAction(myAlertAction)

这就是我的做法，并且效果很好