Added in API level 26
AccessibilityButtonCallback
abstract class AccessibilityButtonCallback
| kotlin.Any | |
| ↳ | android.accessibilityservice.AccessibilityButtonController.AccessibilityButtonCallback |
Callback for interaction with and changes to state of the accessibility button within the system's navigation area.
Summary
| Public constructors | |
|---|---|
| Public methods | |
|---|---|
| open Unit |
onAvailabilityChanged(controller: AccessibilityButtonController!, available: Boolean)Called when the availability of the accessibility button in the system's navigation area has changed. |
| open Unit |
onClicked(controller: AccessibilityButtonController!)Called when the accessibility button in the system's navigation area is clicked. |
Public constructors
AccessibilityButtonCallback
AccessibilityButtonCallback()
Public methods
onAvailabilityChanged
Added in API level 26
open fun onAvailabilityChanged(
controller: AccessibilityButtonController!,
available: Boolean
): Unit
Called when the availability of the accessibility button in the system's navigation area has changed. The accessibility button may become unavailable because the device shopped showing the button, the button was assigned to another service, or for other reasons.
| Parameters | |
|---|---|
controller |
AccessibilityButtonController!: the controller used to register for this callback |
available |
Boolean: true if the accessibility button is available to this service, false otherwise |
onClicked
Added in API level 26
open fun onClicked(controller: AccessibilityButtonController!): Unit
Called when the accessibility button in the system's navigation area is clicked.
| Parameters | |
|---|---|
controller |
AccessibilityButtonController!: the controller used to register for this callback |