# AsyncDifferConfig

added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions)  
belongs to Maven artifact com.android.support:recyclerview-v7:28.0.0-alpha1  
Summary:[Nested Classes](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig#nestedclasses)\|[Methods](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig#)  

# AsyncDifferConfig

| This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings).

`
public

final

class
AsyncDifferConfig
`  
`

extends Object


``


`

|---|-------------------------------------------------------------------|
| java.lang.Object                                                     ||
| ↳ | android.support.v7.recyclerview.extensions.AsyncDifferConfig\<T\> |

<br />

*** ** * ** ***

Configuration object for[ListAdapter](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/ListAdapter),[AsyncListDiffer](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncListDiffer), and similar background-thread list diffing adapter logic.

At minimum, defines item diffing behavior with a[DiffUtil.ItemCallback](https://developer.android.com/reference/android/support/v7/util/DiffUtil.ItemCallback), used to compute item differences to pass to a RecyclerView adapter.

## Summary

|                                                                                                                                          ### Nested classes                                                                                                                                          ||
|----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` class` | [AsyncDifferConfig.Builder](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder)`<T>` Builder class for[AsyncDifferConfig](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig). |

|                                                                                                                                    ### Public methods                                                                                                                                    ||
|---------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` Executor`                                                                                                   | ` `[getBackgroundThreadExecutor](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig#getBackgroundThreadExecutor())`() ` |
| ` `[ItemCallback](https://developer.android.com/reference/android/support/v7/util/DiffUtil.ItemCallback)`<T>` | ` `[getDiffCallback](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig#getDiffCallback())`() `                         |

| ### Inherited methods |
|-----------------------|---|
| [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig#)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 methods

### getBackgroundThreadExecutor

added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions)  

```
Executor getBackgroundThreadExecutor ()
```

<br />

<br />

|      Returns       ||
|------------|--------|
| `Executor` | <br /> |

### getDiffCallback

added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions)  

```
ItemCallback<T> getDiffCallback ()
```

<br />

<br />

|                                                      Returns                                                       ||
|------------------------------------------------------------------------------------------------------------|--------|
| [ItemCallback](https://developer.android.com/reference/android/support/v7/util/DiffUtil.ItemCallback)`<T>` | <br /> |

-

  ## Classes

  - [AsyncDifferConfig](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig)
  - [AsyncDifferConfig.Builder](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder)
  - [AsyncListDiffer](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/AsyncListDiffer)
  - [ListAdapter](https://developer.android.com/reference/android/support/v7/recyclerview/extensions/ListAdapter)