Posted by UIKit when the system’s Switch Control setting has changed.
SDKs
Framework
const NSNotificationThis notification does not include a parameter. Observe this notification using the default notification center.
UIAccessibilityPosted by an application when a new view appears that makes up a major portion of the screen.
UIAccessibilityPosted by an application when the layout of a screen changes, such as when an element appears or disappears.
UIAccessibilityPosted by an application when a scroll action has completed and the accessibility method has been called.
UIAccessibilityPosted by UIKit when an assistive technology focuses on an element.
UIAccessibilityPosted by UIKit when the system’s Reduce Transparency system setting has changed.