You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2.1 KiB
2.1 KiB
3.10. Accessibility
Android provides an accessibility layer that helps users with disabilities to navigate their devices more easily. In addition, Android provides platform APIs that enable accessibility service implementations to receive callbacks for user and system events and generate alternate feedback mechanisms, such as text-to-speech, haptic feedback, and trackball/d-pad navigation.
If device implementations support third-party accessibility services, they:
- [C-1-1] MUST provide an implementation of the Android accessibility framework as described in the accessibility APIs SDK documentation.
- [C-1-2] MUST generate accessibility events and deliver the appropriate
AccessibilityEventto all registeredAccessibilityServiceimplementations as documented in the SDK. - [C-1-4] MUST add a button in the system's navigation bar allowing the user
to control the accessibility service when the enabled accessibility services
declare the
AccessibilityServiceInfo.FLAG_REQUEST_ACCESSIBILITY_BUTTON. Note that for device implementations with no system navigation bar, this requirement is not applicable, but device implementations SHOULD provide a user affordance to control these accessibility services.
If device implementations include preinstalled accessibility services, they:
- [C-2-1] MUST implement these preinstalled accessibility services as Direct Boot Aware apps when the data storage is encrypted with File Based Encryption (FBE).
- SHOULD provide a mechanism in the out-of-box setup flow for users to enable relevant accessibility services, as well as options to adjust the font size, display size and magnification gestures.