这个popover类的名称是什么？ [英] What is the name of this popover class?

问题描述

我找不到这个' popover '的类名。 Apple在他们的应用程序中经常使用它。

I cannot find the name of the class for this 'popover'. Apple uses it a lot in their applications.

我搜索了 popover ， NSAlert ，自定义隐藏/可见视图等等。

I've searched for popover, NSAlert, custom hidden/visible views, and many more.

它叫什么？

推荐答案

这是 UIAlertController 。在ios7之前，它被称为 UIActionSheet

This is UIAlertController. Before ios7 it is know as UIActionSheet

A UIAlertController 对象向用户显示警报消息。此类替换UIActionSheet和U​​IAlertView类以显示警报。

A UIAlertController object displays an alert message to the user. This class replaces the UIActionSheet and UIAlertView classes for displaying alerts.

    @IBAction func showActionSheetTapped(sender: AnyObject) {
  //Create the AlertController
  let actionSheetController: UIAlertController = UIAlertController(title: "Action Sheet", message: "Swiftly Now! Choose an option!", preferredStyle: .ActionSheet)

  //Create and add the Cancel action
  let cancelAction: UIAlertAction = UIAlertAction(title: "Cancel", style: .Cancel) { action -> Void in
    //Just dismiss the action sheet
  }
  actionSheetController.addAction(cancelAction)
    //Create and add first option action
  let takePictureAction: UIAlertAction = UIAlertAction(title: "Take Picture", style: .Default) { action -> Void in
    //Code for launching the camera goes here
    }
  actionSheetController.addAction(takePictureAction)
  //Create and add a second option action
  let choosePictureAction: UIAlertAction = UIAlertAction(title: "Choose From Camera Roll", style: .Default) { action -> Void in
    //Code for picking from camera roll goes here
    }
  actionSheetController.addAction(choosePictureAction)

  //Present the AlertController
  self.presentViewController(actionSheetController, animated: true, completion: nil)
}

输出：

可能是它会帮助你。

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