Summary: Ctors | Methods | Inherited Methods

RecyclerViewAccessibilityDelegate.ItemDelegate

Kotlin |Java

public static class RecyclerViewAccessibilityDelegate.ItemDelegate
extends AccessibilityDelegateCompat

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

The default implementation of accessibility delegate for the individual items of the RecyclerView.

If you are overriding RecyclerViewAccessibilityDelegate#getItemDelegate() but still want to keep some default behavior, you can create an instance of this class and delegate to the parent as necessary.

Summary

Public constructors
`ItemDelegate(RecyclerViewAccessibilityDelegate recyclerViewDelegate)` Creates an item delegate for the given `RecyclerViewAccessibilityDelegate`.

Public methods
`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 `AccessibilityService`s 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.

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 `AccessibilityService`s 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

public ItemDelegate (RecyclerViewAccessibilityDelegate recyclerViewDelegate)

Creates an item delegate for the given RecyclerViewAccessibilityDelegate.

Parameters
`recyclerViewDelegate`	`RecyclerViewAccessibilityDelegate`: The parent RecyclerView's accessibility delegate.

Public methods

dispatchPopulateAccessibilityEvent

public 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.

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

Parameters
`host`	`View`: The View hosting the delegate.
`event`	`AccessibilityEvent`: The event.

Returns
`boolean`	True if the event population was completed.

getAccessibilityNodeProvider

public 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.

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

Parameters
`host`	`View`

Returns
`AccessibilityNodeProviderCompat`	The provider.

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.

onPopulateAccessibilityEvent

public void onPopulateAccessibilityEvent (View host, 
                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.

Parameters
`host`	`View`: The View hosting the delegate.
`event`	`AccessibilityEvent`: The accessibility event which to populate.

onRequestSendAccessibilityEvent

public 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.

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

Parameters
`host`	`ViewGroup`: The View hosting the delegate.
`child`	`View`: The child which requests sending the event.
`event`	`AccessibilityEvent`: The event to be sent.

Returns
`boolean`	True if the event should be sent

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.

sendAccessibilityEvent

public void sendAccessibilityEvent (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.

Parameters
`host`	`View`: The View hosting the delegate.
`eventType`	`int`: The type of the event to send.

sendAccessibilityEventUnchecked

public void sendAccessibilityEventUnchecked (View host, 
                AccessibilityEvent event)

Sends an accessibility event. This method behaves exactly as sendAccessibilityEvent(View, int) 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.

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