UIAlertControllerStyle

Important

This is a preliminary document for an API or technology in development. Apple is supplying this information to help you plan for the adoption of the technologies and programming interfaces described herein for use on Apple-branded products. This information is subject to change, and software implemented according to this document should be tested with final operating system software and final documentation. Newer versions of this document may be provided with future seeds of the API or technology.

A UIAlertController object displays an alert message to the user. This class replaces the UIActionSheet and UIAlertView classes for displaying alerts. After configuring the alert controller with the actions and style you want, present it using the presentViewController:animated:completion: method. More...

Inheritance

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• NSObject
• UIResponder
• UIViewController
• UIAlertController

Conforms To

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• NSCoding
• NSObject
• UIAppearanceContainer
• UIContentContainer
• UITraitEnvironment

Import Statement

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@import UIKit;

Availability

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Available in iOS 8.0 and later.

Creating an Alert Controller

• alertControllerWithTitle:message:preferredStyle:

Configuring the Alert

• title
• message
• preferredStyle

Configuring the User Actions

• addAction:
• actions

Configuring Text Fields

• addTextFieldWithConfigurationHandler:
• textFields

Constants

• UIAlertControllerStyle

  Constants indicating the type of alert to display.

  Declaration

  Swift

  enum UIAlertControllerStyle : Int { case ActionSheet case Alert}

  Objective-C

  typedef enum UIAlertControllerStyle: NSInteger { UIAlertControllerStyleActionSheet = 0, UIAlertControllerStyleAlert} UIAlertControllerStyle;

  Constants

  • UIAlertControllerStyleActionSheet

    An action sheet displayed in the context of the view controller that presented it.

    Use an action sheet to present the user with a set of alternatives for how to proceed with a given task. You can also use this style to prompt the user to confirm a potentially dangerous action.

    Available in iOS 8.0 and later.

  • UIAlertControllerStyleAlert

    An alert displayed modally for the app.

    Available in iOS 8.0 and later.

  Availability

  Available in iOS 8.0 and later.