# android.support.v7.util added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) # android.support.v7.util | 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package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack).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). ## Interfaces |----------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------| | [ListUpdateCallback](https://developer.android.com/reference/android/support/v7/util/ListUpdateCallback) | An interface that can receive Update operations that are applied to a list. | ## Classes |--------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AdapterListUpdateCallback](https://developer.android.com/reference/android/support/v7/util/AdapterListUpdateCallback) | ListUpdateCallback that dispatches update events to the given adapter. | | [AsyncListUtil](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil)\ | A utility class that supports asynchronous content loading. | | [AsyncListUtil.DataCallback](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil.DataCallback)\ | The callback that provides data access for[AsyncListUtil](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil). | | [AsyncListUtil.ViewCallback](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil.ViewCallback) | The callback that links[AsyncListUtil](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil)with the list view. | | [BatchingListUpdateCallback](https://developer.android.com/reference/android/support/v7/util/BatchingListUpdateCallback) | Wraps a[ListUpdateCallback](https://developer.android.com/reference/android/support/v7/util/ListUpdateCallback)callback and batches operations that can be merged. | | [DiffUtil](https://developer.android.com/reference/android/support/v7/util/DiffUtil) | DiffUtil is a utility class that can calculate the difference between two lists and output a list of update operations that converts the first list into the second one. | | [DiffUtil.Callback](https://developer.android.com/reference/android/support/v7/util/DiffUtil.Callback) | A Callback class used by DiffUtil while calculating the diff between two lists. | | [DiffUtil.DiffResult](https://developer.android.com/reference/android/support/v7/util/DiffUtil.DiffResult) | This class holds the information about the result of a[calculateDiff(Callback, boolean)](https://developer.android.com/reference/android/support/v7/util/DiffUtil#calculateDiff(android.support.v7.util.DiffUtil.Callback, boolean))call. | | [DiffUtil.ItemCallback](https://developer.android.com/reference/android/support/v7/util/DiffUtil.ItemCallback)\ | Callback for calculating the diff between two non-null items in a list. | | [SortedList](https://developer.android.com/reference/android/support/v7/util/SortedList)\ | A Sorted list implementation that can keep items in order and also notify for changes in the list such that it can be bound to a[RecyclerView.Adapter](https://developer.android.com/reference/android/support/v7/widget/RecyclerView.Adapter). | | [SortedList.BatchedCallback](https://developer.android.com/reference/android/support/v7/util/SortedList.BatchedCallback)\ | A callback implementation that can batch notify events dispatched by the SortedList. | | [SortedList.Callback](https://developer.android.com/reference/android/support/v7/util/SortedList.Callback)\ | The class that controls the behavior of the[SortedList](https://developer.android.com/reference/android/support/v7/util/SortedList). | - ## Interfaces - [ListUpdateCallback](https://developer.android.com/reference/android/support/v7/util/ListUpdateCallback) - ## Classes - [AdapterListUpdateCallback](https://developer.android.com/reference/android/support/v7/util/AdapterListUpdateCallback) - [AsyncListUtil](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil) - [AsyncListUtil.DataCallback](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil.DataCallback) - [AsyncListUtil.ViewCallback](https://developer.android.com/reference/android/support/v7/util/AsyncListUtil.ViewCallback) - [BatchingListUpdateCallback](https://developer.android.com/reference/android/support/v7/util/BatchingListUpdateCallback) - [DiffUtil](https://developer.android.com/reference/android/support/v7/util/DiffUtil) - [DiffUtil.Callback](https://developer.android.com/reference/android/support/v7/util/DiffUtil.Callback) - [DiffUtil.DiffResult](https://developer.android.com/reference/android/support/v7/util/DiffUtil.DiffResult) - [DiffUtil.ItemCallback](https://developer.android.com/reference/android/support/v7/util/DiffUtil.ItemCallback) - [SortedList](https://developer.android.com/reference/android/support/v7/util/SortedList) - [SortedList.BatchedCallback](https://developer.android.com/reference/android/support/v7/util/SortedList.BatchedCallback) - [SortedList.Callback](https://developer.android.com/reference/android/support/v7/util/SortedList.Callback)