# RecyclerViewAccessibilityDelegate

# RecyclerViewAccessibilityDelegate

Artifact:[androidx.recyclerview:recyclerview](https://developer.android.com/jetpack/androidx/releases/recyclerview)  
[View Source](https://cs.android.com/search?q=file:androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate.java+class:androidx.recyclerview.widget.RecyclerViewAccessibilityDelegate)  
Added in[1.0.0](https://developer.android.com/jetpack/androidx/releases/recyclerview#1.0.0)

*** ** * ** ***

Kotlin\|[Java](https://developer.android.com/reference/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate "View this page in Java")

<br />

```
class RecyclerViewAccessibilityDelegate : AccessibilityDelegateCompat
```

<br />

|---|---|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [kotlin.Any](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-any/index.html)                                                                                                    |||
| ↳ | [androidx.core.view.AccessibilityDelegateCompat](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat)                                    ||
|   | ↳ | [androidx.recyclerview.widget.RecyclerViewAccessibilityDelegate](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate) |

*** ** * ** ***

The AccessibilityDelegate used by RecyclerView.

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

## Summary

|                                                                                                                                                                                                     ### Nested types                                                                                                                                                                                                     |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `class `[RecyclerViewAccessibilityDelegate.ItemDelegate](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate.ItemDelegate)` : `[AccessibilityDelegateCompat](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat) The default implementation of accessibility delegate for the individual items of the RecyclerView. |

|                                                                                                                                                                   ### Public constructors                                                                                                                                                                   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [RecyclerViewAccessibilityDelegate](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate#RecyclerViewAccessibilityDelegate(androidx.recyclerview.widget.RecyclerView))`(recyclerView: `[RecyclerView](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerView)`)` |

|                                                     ### Public functions                                                     |
|------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [AccessibilityDelegateCompat](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat) | [getItemDelegate](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate#getItemDelegate())`()` Gets the AccessibilityDelegate for an individual item in the RecyclerView.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html)                                                | [onInitializeAccessibilityEvent](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate#onInitializeAccessibilityEvent(android.view.View,android.view.accessibility.AccessibilityEvent))`(host: `[View](https://developer.android.com/reference/android/view/View.html)`, event: `[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)`)` Initializes an[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)with information about the the host View which is the event source.                                                   |
| [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html)                                                | [onInitializeAccessibilityNodeInfo](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate#onInitializeAccessibilityNodeInfo(android.view.View,androidx.core.view.accessibility.AccessibilityNodeInfoCompat))`(` ` host: `[View](https://developer.android.com/reference/android/view/View.html)`,` ` info: `[AccessibilityNodeInfoCompat](https://developer.android.com/reference/kotlin/androidx/core/view/accessibility/AccessibilityNodeInfoCompat) `)` Initializes an[AccessibilityNodeInfoCompat](https://developer.android.com/reference/kotlin/androidx/core/view/accessibility/AccessibilityNodeInfoCompat)with information about the host view. |
| [Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html)                                          | [performAccessibilityAction](https://developer.android.com/reference/kotlin/androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate#performAccessibilityAction(android.view.View,int,android.os.Bundle))`(host: `[View](https://developer.android.com/reference/android/view/View.html)`, action: `[Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)`, args: `[Bundle](https://developer.android.com/reference/android/os/Bundle.html)`?)` Performs the specified accessibility action on the view.                                                                                                                                                                             |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    ### Inherited functions                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        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| From[androidx.core.view.AccessibilityDelegateCompat](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat) |-------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html)                                                                   | [dispatchPopulateAccessibilityEvent](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat#dispatchPopulateAccessibilityEvent(android.view.View,android.view.accessibility.AccessibilityEvent))`(host: `[View](https://developer.android.com/reference/android/view/View.html)`, event: `[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)`)` Dispatches an[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)to the host[View](https://developer.android.com/reference/android/view/View.html)first and then to its children for adding their text content to the event.                                                                                    | | [AccessibilityNodeProviderCompat](https://developer.android.com/reference/kotlin/androidx/core/view/accessibility/AccessibilityNodeProviderCompat)`?` | [getAccessibilityNodeProvider](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat#getAccessibilityNodeProvider(android.view.View))`(host: `[View](https://developer.android.com/reference/android/view/View.html)`)` Gets the provider for managing a virtual view hierarchy rooted at this View and reported to[AccessibilityService](https://developer.android.com/reference/android/accessibilityservice/AccessibilityService.html)s that explore the window content.                                                                                                                                                                                                                                                                                                              | | [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html)                                                                         | [onPopulateAccessibilityEvent](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat#onPopulateAccessibilityEvent(android.view.View,android.view.accessibility.AccessibilityEvent))`(host: `[View](https://developer.android.com/reference/android/view/View.html)`, event: `[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)`)` Gives a chance to the host View to populate the accessibility event with its text content.                                                                                                                                                                                                                                                                                              | | [Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html)                                                                   | [onRequestSendAccessibilityEvent](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat#onRequestSendAccessibilityEvent(android.view.ViewGroup,android.view.View,android.view.accessibility.AccessibilityEvent))`(` ` host: `[ViewGroup](https://developer.android.com/reference/android/view/ViewGroup.html)`,` ` child: `[View](https://developer.android.com/reference/android/view/View.html)`,` ` event: `[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html) `)` Called when a child of the host View has requested sending an[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)and gives an opportunity to the parent (the host) to augment the event. | | [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html)                                                                         | [sendAccessibilityEvent](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat#sendAccessibilityEvent(android.view.View,int))`(host: `[View](https://developer.android.com/reference/android/view/View.html)`, eventType: `[Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)`)` Sends an accessibility event of the given type.                                                                                                                                                                                                                                                                                                                                                                                                                                | | [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html)                                                                         | [sendAccessibilityEventUnchecked](https://developer.android.com/reference/kotlin/androidx/core/view/AccessibilityDelegateCompat#sendAccessibilityEventUnchecked(android.view.View,android.view.accessibility.AccessibilityEvent))`(host: `[View](https://developer.android.com/reference/android/view/View.html)`, event: `[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)`)` Sends an accessibility event.                                                                                                                                                                                                                                                                                                                                                     | |

## Public constructors

### RecyclerViewAccessibilityDelegate

Added in[1.0.0](https://developer.android.com/jetpack/androidx/releases/recyclerview#1.0.0)  

```
RecyclerViewAccessibilityDelegate(recyclerView: RecyclerView)
```  

## Public functions

### getItemDelegate

Added in[1.0.0](https://developer.android.com/jetpack/androidx/releases/recyclerview#1.0.0)  

```
fun getItemDelegate(): AccessibilityDelegateCompat
```

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.  

### onInitializeAccessibilityEvent

```
fun onInitializeAccessibilityEvent(host: View, event: AccessibilityEvent): Unit
```

Initializes an[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html)with information about the the host View which is the event source.

The default implementation behaves as[ViewCompat#onInitalizeAccessibilityEvent(View v, AccessibilityEvent event)](https://developer.android.com/reference/kotlin/androidx/core/view/ViewCompat#onInitializeAccessibilityEvent(android.view.View,android.view.accessibility.AccessibilityEvent))for the case of no accessibility delegate been set.  

|                                                        Parameters                                                         |
|---------------------------------------------------------------------------------------------------------------------------|--------------------------------|
| `host: `[View](https://developer.android.com/reference/android/view/View.html)                                            | The View hosting the delegate. |
| `event: `[AccessibilityEvent](https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html) | The event to initialize.       |

|                                                                                                    See also                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------|
| [onInitializeAccessibilityEvent](https://developer.android.com/reference/kotlin/androidx/core/view/ViewCompat#onInitializeAccessibilityEvent(android.view.View,android.view.accessibility.AccessibilityEvent)) | ViewCompat#onInitializeAccessibilityEvent(View, AccessibilityEvent) |

### onInitializeAccessibilityNodeInfo

```
fun onInitializeAccessibilityNodeInfo(
    host: View,
    info: AccessibilityNodeInfoCompat
): Unit
```

Initializes an[AccessibilityNodeInfoCompat](https://developer.android.com/reference/kotlin/androidx/core/view/accessibility/AccessibilityNodeInfoCompat)with information about the host view.

The default implementation behaves as[ViewCompat#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfoCompat)](https://developer.android.com/reference/kotlin/androidx/core/view/ViewCompat#onInitializeAccessibilityNodeInfo(android.view.View,androidx.core.view.accessibility.AccessibilityNodeInfoCompat))for the case of no accessibility delegate been set.  

|                                                                     Parameters                                                                     |
|----------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------|
| `host: `[View](https://developer.android.com/reference/android/view/View.html)                                                                     | The View hosting the delegate. |
| `info: `[AccessibilityNodeInfoCompat](https://developer.android.com/reference/kotlin/androidx/core/view/accessibility/AccessibilityNodeInfoCompat) | The instance to initialize.    |

|                                                                                                              See also                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------|
| [onInitializeAccessibilityNodeInfo](https://developer.android.com/reference/kotlin/androidx/core/view/ViewCompat#onInitializeAccessibilityNodeInfo(android.view.View,androidx.core.view.accessibility.AccessibilityNodeInfoCompat)) | ViewCompat#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfoCompat) |

### performAccessibilityAction

```
fun performAccessibilityAction(host: View, action: Int, args: Bundle?): Boolean
```

Performs the specified accessibility action on the view. For possible accessibility actions look at[AccessibilityNodeInfoCompat](https://developer.android.com/reference/kotlin/androidx/core/view/accessibility/AccessibilityNodeInfoCompat).

The default implementation behaves as[View#performAccessibilityAction(int, Bundle)](https://developer.android.com/reference/android/view/View.html#performAccessibilityAction(int, android.os.Bundle))for the case of no accessibility delegate been set.  

|                                      Parameters                                       |
|---------------------------------------------------------------------------------------|--------------------------------------|
| `host: `[View](https://developer.android.com/reference/android/view/View.html)        | View on which to perform the action. |
| `action: `[Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html) | The action to perform.               |
| `args: `[Bundle](https://developer.android.com/reference/android/os/Bundle.html)`?`   | Optional action arguments.           |

|                                       Returns                                       |
|-------------------------------------------------------------------------------------|-----------------------------------|
| [Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html) | Whether the action was performed. |

|                                                                    See also                                                                     |
|-------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------|
| [performAccessibilityAction](https://developer.android.com/reference/android/view/View.html#performAccessibilityAction(int, android.os.Bundle)) | View#performAccessibilityAction(int, Bundle) |