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added in version 22.0.0

android.support.v4.os

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

Interfaces

CancellationSignal.OnCancelListener Listens for cancellation. 
ParcelableCompatCreatorCallbacks<T> This interface is deprecated. Use Parcelable.ClassLoaderCreator directly.  

Classes

AsyncTaskCompat This class was deprecated in API level 26.0.0-alpha1. Use AsyncTask directly.  
BuildCompat This class contains additional platform version checking methods for targeting pre-release versions of Android. 
CancellationSignal Static library support version of the framework's CancellationSignal
ConfigurationCompat Helper class which allows access to properties of Configuration in a backward compatible fashion. 
EnvironmentCompat Helper for accessing features in Environment in a backwards compatible fashion. 
LocaleListCompat Helper for accessing features in LocaleList in a backwards compatible fashion. 
ParcelableCompat This class is deprecated. Use Parcelable.ClassLoaderCreator directly.  
TraceCompat Writes trace events to the system trace buffer. 
UserManagerCompat Helper for accessing features in UserManager in a backwards compatible fashion. 

Exceptions

OperationCanceledException An exception type that is thrown when an operation in progress is canceled. 
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