iOS Reference Library Apple Developer
Search

UIAccessibilityAction Protocol Reference

(informal protocol)

Adopted by
Framework
/System/Library/Frameworks/UIKit.framework
Companion guide
Declared in
UIAccessibility.h

Overview

The UIAccessibilityAction informal protocol provides a way for accessibility elements to support specific actions. For example, for UI elements such as sliders and picker views, users can select a value by manipulating the element through a range of values. To make such elements accessible, you first need to characterize it by including the UIAccessibilityTraitAdjustable trait. Then, you must implement the methods of the UIAccessibilityAction protocol. When you do this, assistive technology users can adjust the element using technology-specific gestures.

Tasks

Performing the Action

Instance Methods

accessibilityDecrement

Adjusts the accessibility element so that its content is decreased.

- (void)accessibilityDecrement

Availability
  • Available in iOS 4.0 and later.
Declared In
UIAccessibility.h

accessibilityIncrement

Adjusts the accessibility element so that its content is increased.

- (void)accessibilityIncrement

Availability
  • Available in iOS 4.0 and later.
Declared In
UIAccessibility.h



Last updated: 2010-05-18

Did this document help you? Yes It's good, but... Not helpful...