Android APIs
package

android.support.v4.os

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

Interfaces

ParcelableCompatCreatorCallbacks<T> Callbacks a Parcelable creator should implement. 

Classes

AsyncTaskCompat Helper for accessing features in AsyncTask introduced after API level 4 in a backwards compatible fashion. 
EnvironmentCompat Helper for accessing features in Environment introduced after API level 4 in a backwards compatible fashion. 
ParcelableCompat Helper for accessing features in Parcelable introduced after API level 4 in a backwards compatible fashion.