Summary: Nested Classes | Ctors | Methods | Inherited Methods

RecyclerViewAccessibilityDelegate

Kotlin |Java

public class RecyclerViewAccessibilityDelegate
extends AccessibilityDelegateCompat

java.lang.Object
↳	androidx.core.view.AccessibilityDelegateCompat
	↳	androidx.recyclerview.widget.RecyclerViewAccessibilityDelegate

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The AccessibilityDelegate used by RecyclerView.

This class handles basic accessibility actions and delegates them to LayoutManager.

Summary

Nested classes
class	RecyclerViewAccessibilityDelegate.ItemDelegate The default implementation of accessibility delegate for the individual items of the RecyclerView.

Public constructors
RecyclerViewAccessibilityDelegate(RecyclerView recyclerView)

Public methods
AccessibilityDelegateCompat	getItemDelegate() Gets the AccessibilityDelegate for an individual item in the RecyclerView.
void	onInitializeAccessibilityEvent(View host, AccessibilityEvent event) Initializes an AccessibilityEvent with information about the the host View which is the event source.
void	onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) Initializes an AccessibilityNodeInfoCompat with information about the host view.
boolean	performAccessibilityAction(View host, int action, Bundle args) Performs the specified accessibility action on the view.

Inherited methods
From class androidx.core.view.AccessibilityDelegateCompat boolean dispatchPopulateAccessibilityEvent(View host, AccessibilityEvent event) Dispatches an AccessibilityEvent to the host View first and then to its children for adding their text content to the event. AccessibilityNodeProviderCompat getAccessibilityNodeProvider(View host) Gets the provider for managing a virtual view hierarchy rooted at this View and reported to AccessibilityServices that explore the window content. void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) Initializes an AccessibilityEvent with information about the the host View which is the event source. void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) Initializes an AccessibilityNodeInfoCompat with information about the host view. void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) Gives a chance to the host View to populate the accessibility event with its text content. boolean onRequestSendAccessibilityEvent(ViewGroup host, View child, 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. boolean performAccessibilityAction(View host, int action, Bundle args) Performs the specified accessibility action on the view. void sendAccessibilityEvent(View host, int eventType) Sends an accessibility event of the given type. void sendAccessibilityEventUnchecked(View host, AccessibilityEvent event) Sends an accessibility event.
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait(long arg0, int arg1) final void wait(long arg0) final void wait()

Public constructors

RecyclerViewAccessibilityDelegate

public RecyclerViewAccessibilityDelegate (RecyclerView recyclerView)

Parameters
recyclerView	RecyclerView

Public methods

getItemDelegate

public AccessibilityDelegateCompat getItemDelegate ()

Gets the AccessibilityDelegate for an individual item in the RecyclerView. A basic item delegate is provided by default, but you can override this method to provide a custom per-item delegate. For now, returning an AccessibilityDelegateCompat as opposed to an ItemDelegate will prevent use of the ViewCompat accessibility API on item views.

Returns
AccessibilityDelegateCompat

onInitializeAccessibilityEvent

public void onInitializeAccessibilityEvent (View host, 
                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.

Parameters
host	View: The View hosting the delegate.
event	AccessibilityEvent: The event to initialize.

onInitializeAccessibilityNodeInfo

public void onInitializeAccessibilityNodeInfo (View host, 
                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.

Parameters
host	View: The View hosting the delegate.
info	AccessibilityNodeInfoCompat: The instance to initialize.

performAccessibilityAction

public boolean performAccessibilityAction (View host, 
                int action, 
                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.

Parameters
host	View
action	int: The action to perform.
args	Bundle

Returns
boolean	Whether the action was performed.