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Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# AsyncDifferConfig.Builder\n\nadded in [version 27.1.0](/topic/libraries/support-library/revisions) \nbelongs to Maven artifact com.android.support:recyclerview-v7:28.0.0-alpha1 \nSummary: [Ctors](#pubctors) \\| [Methods](#pubmethods) \\| [Inherited Methods](#inhmethods) \\| [\\[Expand All\\]](#) \n\nAsyncDifferConfig.Builder\n=========================\n\n| This package is part of the Android [support library](/topic/libraries/support-library) which is no longer maintained. The support library has been superseded by [AndroidX](/jetpack/androidx) which is part of [Jetpack](/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider [migrating](/jetpack/androidx/migrate) existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library [class\n| mappings](/jetpack/androidx/migrate/class-mappings).\n\n\n`\npublic\nstatic\nfinal\n\nclass\nAsyncDifferConfig.Builder\n`\n\n\n`\n\nextends Object\n\n\n`\n\n`\n\n\n`\n\n|---|---------------------------------------------------------------------------|\n| java.lang.Object ||\n| ↳ | android.support.v7.recyclerview.extensions.AsyncDifferConfig.Builder\\\u003cT\\\u003e |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nBuilder class for [AsyncDifferConfig](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig).\n\nSummary\n-------\n\n| ### Public constructors ||\n|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[AsyncDifferConfig.Builder](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder#AsyncDifferConfig.Builder(android.support.v7.util.DiffUtil.ItemCallback\u003cT\u003e))`(`[ItemCallback](/reference/android/support/v7/util/DiffUtil.ItemCallback)`\u003cT\u003e diffCallback) ` |\n\n| ### Public methods ||\n|------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` `[AsyncDifferConfig](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig)`\u003cT\u003e` | ` `[build](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder#build())`() ` Creates a [AsyncListDiffer](/reference/android/support/v7/recyclerview/extensions/AsyncListDiffer) with the given parameters. |\n| ` `[Builder](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder)`\u003cT\u003e` | ` `[setBackgroundThreadExecutor](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder#setBackgroundThreadExecutor(java.util.concurrent.Executor))`(Executor executor) ` If provided, defines the background executor used to calculate the diff between an old and a new list. |\n\n| ### Inherited methods |\n|-----------------------|---|\n| From class ` java.lang.Object ` |-------------------|-------------------------------| | ` Object` | ` clone() ` | | ` boolean` | ` equals(Object arg0) ` | | ` void` | ` finalize() ` | | ` final Class\u003c?\u003e` | ` 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() ` | ||\n\nPublic constructors\n-------------------\n\n### AsyncDifferConfig.Builder\n\nadded in [version 27.1.0](/topic/libraries/support-library/revisions) \n\n```\nAsyncDifferConfig.Builder (ItemCallback\u003cT\u003e diffCallback)\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Parameters ||\n|----------------|-----------------------|\n| `diffCallback` | `ItemCallback` \u003cbr /\u003e |\n\nPublic methods\n--------------\n\n### build\n\nadded in [version 27.1.0](/topic/libraries/support-library/revisions) \n\n```\nAsyncDifferConfig\u003cT\u003e build ()\n```\n\nCreates a [AsyncListDiffer](/reference/android/support/v7/recyclerview/extensions/AsyncListDiffer) with the given parameters.\n\n\u003cbr /\u003e\n\n| Returns ||\n|---------------------------------------------------------------------------------------------------|---------------------------------|\n| [AsyncDifferConfig](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig)`\u003cT\u003e` | A new AsyncDifferConfig. \u003cbr /\u003e |\n\n### setBackgroundThreadExecutor\n\nadded in [version 27.1.0](/topic/libraries/support-library/revisions) \n\n```\nBuilder\u003cT\u003e setBackgroundThreadExecutor (Executor executor)\n```\n\nIf provided, defines the background executor used to calculate the diff between an old\nand a new list.\n\n\nIf not provided, defaults to two thread pool executor, shared by all ListAdapterConfigs.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|------------|-----------------------------------------------------------------|\n| `executor` | `Executor`: The background executor to run list diffing. \u003cbr /\u003e |\n\n| Returns ||\n|-------------------------------------------------------------------------------------------------|-------------|\n| [Builder](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder)`\u003cT\u003e` | this \u003cbr /\u003e |\n\n-\n\n Classes\n -------\n\n - [AsyncDifferConfig](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig)\n - [AsyncDifferConfig.Builder](/reference/android/support/v7/recyclerview/extensions/AsyncDifferConfig.Builder)\n - [AsyncListDiffer](/reference/android/support/v7/recyclerview/extensions/AsyncListDiffer)\n - [ListAdapter](/reference/android/support/v7/recyclerview/extensions/ListAdapter)"]]