AccessibilityDelegateCompat

public AccessibilityDelegateCompat()

Creates a new instance.

public boolean dispatchPopulateAccessibilityEvent(
    @NonNull View host,
    @NonNull AccessibilityEvent event
)

Dispatches an AccessibilityEvent to the host View first and then to its children for adding their text content to the event.

The default implementation behaves as View#dispatchPopulateAccessibilityEvent(AccessibilityEvent) for the case of no accessibility delegate been set.

public @Nullable AccessibilityNodeProviderCompat getAccessibilityNodeProvider(@NonNull View host)

Gets the provider for managing a virtual view hierarchy rooted at this View and reported to AccessibilityServices that explore the window content.

The default implementation behaves as ViewCompat#getAccessibilityNodeProvider(View) for the case of no accessibility delegate been set.

public void onInitializeAccessibilityEvent(
    @NonNull View host,
    @NonNull AccessibilityEvent event
)

Initializes an AccessibilityEvent with information about the the host View which is the event source.

The default implementation behaves as ViewCompat#onInitalizeAccessibilityEvent(View v, AccessibilityEvent event) for the case of no accessibility delegate been set.

public void onInitializeAccessibilityNodeInfo(
    @NonNull View host,
    @NonNull AccessibilityNodeInfoCompat info
)

Initializes an AccessibilityNodeInfoCompat with information about the host view.

The default implementation behaves as ViewCompat#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfoCompat) for the case of no accessibility delegate been set.

public void onPopulateAccessibilityEvent(
    @NonNull View host,
    @NonNull AccessibilityEvent event
)

Gives a chance to the host View to populate the accessibility event with its text content.

The default implementation behaves as ViewCompat#onPopulateAccessibilityEvent(AccessibilityEvent) for the case of no accessibility delegate been set.

public boolean onRequestSendAccessibilityEvent(
    @NonNull ViewGroup host,
    @NonNull View child,
    @NonNull AccessibilityEvent event
)

Called when a child of the host View has requested sending an AccessibilityEvent and gives an opportunity to the parent (the host) to augment the event.

The default implementation behaves as ViewGroupCompat#onRequestSendAccessibilityEvent(ViewGroup, View, AccessibilityEvent) for the case of no accessibility delegate been set.

public boolean performAccessibilityAction(
    @NonNull View host,
    int action,
    @Nullable Bundle args
)

Performs the specified accessibility action on the view. For possible accessibility actions look at AccessibilityNodeInfoCompat.

The default implementation behaves as View#performAccessibilityAction(int, Bundle) for the case of no accessibility delegate been set.

public void sendAccessibilityEvent(@NonNull View host, int eventType)

Sends an accessibility event of the given type. If accessibility is not enabled this method has no effect.

The default implementation behaves as View#sendAccessibilityEvent(int) for the case of no accessibility delegate been set.

public void sendAccessibilityEventUnchecked(
    @NonNull View host,
    @NonNull AccessibilityEvent event
)

Sends an accessibility event. This method behaves exactly as sendAccessibilityEvent but takes as an argument an empty AccessibilityEvent and does not perform a check whether accessibility is enabled.

The default implementation behaves as View#sendAccessibilityEventUnchecked(AccessibilityEvent) for the case of no accessibility delegate been set.