Android APIs
package

android.support.v4.util

Support android.util classes to assist with development of applications for android API level 4 or later.

Interfaces

Pools.Pool<T> Interface for managing a pool of objects. 

Classes

ArrayMap<K, V> ArrayMap is a generic key->value mapping data structure that is designed to be more memory efficient than a traditional HashMap, this implementation is a version of the platform's ArrayMap that can be used on older versions of the platform. 
AtomicFile Static library support version of the framework's AtomicFile, a helper class for performing atomic operations on a file by creating a backup file until a write has successfully completed. 
CircularArray<E> A circular array implementation that provides O(1) random read and O(1) prepend and O(1) append. 
LongSparseArray<E> SparseArray mapping longs to Objects, a version of the platform's LongSparseArray that can be used on older versions of the platform. 
LruCache<K, V> Static library version of LruCache
Pools Helper class for crating pools of objects. 
Pools.SimplePool<T> Simple (non-synchronized) pool of objects. 
Pools.SynchronizedPool<T> Synchronized) pool of objects. 
SimpleArrayMap<K, V> Base implementation of ArrayMap that doesn't include any standard Java container API interoperability. 
SparseArrayCompat<E> A copy of the current platform (currently KITKAT version of SparseArray; provides a removeAt() method and other things.