Posted by an app when an announcement needs to be conveyed to the assistive technology.
- iOS 4.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
This notification includes a parameter, which is an
NSString object that contains the announcement. An assistive technology outputs the announcement string contained in the parameter.
Use this notification to provide accessibility information about events that do not update the application user interface (UI), or that update the UI only briefly.
Post this notification using the