Android APIs

Class Index

These are the Android API classes. See all API packages.

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A

AbortableHttpRequest Interface representing an HTTP request that can be aborted by shutting down the underlying HTTP connection. 
AbsListView Base class that can be used to implement virtualized lists of items. 
AbsListView.LayoutParams AbsListView extends LayoutParams to provide a place to hold the view type. 
AbsListView.MultiChoiceModeListener A MultiChoiceModeListener receives events for CHOICE_MODE_MULTIPLE_MODAL
AbsListView.OnScrollListener Interface definition for a callback to be invoked when the list or grid has been scrolled. 
AbsListView.RecyclerListener A RecyclerListener is used to receive a notification whenever a View is placed inside the RecycleBin's scrap heap. 
AbsListView.SelectionBoundsAdjuster The top-level view of a list item can implement this interface to allow itself to modify the bounds of the selection shown for that item. 
AbsoluteLayout This class was deprecated in API level 3. Use FrameLayout, RelativeLayout or a custom layout instead.  
AbsoluteLayout.LayoutParams Per-child layout information associated with AbsoluteLayout. 
AbsoluteSizeSpan  
AbsSavedState A Parcelable implementation that should be used by inheritance hierarchies to ensure the state of all classes along the chain is saved. 
AbsSeekBar  
AbsSpinner An abstract base class for spinner widgets. 
AbstractAccountAuthenticator Abstract base class for creating AccountAuthenticators. 
AbstractAuthenticationHandler  
AbstractClientConnAdapter Abstract adapter from operated to managed client connections. 
AbstractCollection<E> Class AbstractCollection is an abstract implementation of the Collection interface. 
AbstractConnPool An abstract connection pool. 
AbstractCookieAttributeHandler  
AbstractCookieSpec Abstract cookie specification which can delegate the job of parsing, validation or matching cookie attributes to a number of arbitrary CookieAttributeHandlers. 
AbstractCursor This is an abstract cursor class that handles a lot of the common code that all cursors need to deal with and is provided for convenience reasons. 
AbstractCursor.SelfContentObserver Cursors use this class to track changes others make to their URI. 
AbstractDetailsDescriptionPresenter An abstract Presenter for rendering a detailed description of an item. 
AbstractDetailsDescriptionPresenter.ViewHolder  
AbstractExecutorService Provides default implementations of ExecutorService execution methods. 
AbstractHttpClient Convenience base class for HTTP client implementations. 
AbstractHttpClientConnection Abstract client-side HTTP connection capable of transmitting and receiving data using arbitrary SessionInputBuffer and SessionOutputBuffer 
AbstractHttpEntity Abstract base class for entities. 
AbstractHttpMessage Basic implementation of an HTTP message that can be modified. 
AbstractHttpParams Abstract base class for parameter collections. 
AbstractHttpServerConnection Abstract server-side HTTP connection capable of transmitting and receiving data using arbitrary SessionInputBuffer and SessionOutputBuffer 
AbstractInputMethodService AbstractInputMethodService provides a abstract base class for input methods. 
AbstractInputMethodService.AbstractInputMethodImpl Base class for derived classes to implement their InputMethod interface. 
AbstractInputMethodService.AbstractInputMethodSessionImpl Base class for derived classes to implement their InputMethodSession interface. 
AbstractInterruptibleChannel AbstractInterruptibleChannel is the root class for interruptible channels. 
AbstractList<E> AbstractList is an abstract implementation of the List interface, optimized for a backing store which supports random access. 
AbstractMap<K, V> A base class for Map implementations. 
AbstractMap.SimpleEntry<K, V> A key-value mapping with mutable values. 
AbstractMap.SimpleImmutableEntry<K, V> An immutable key-value mapping. 
AbstractMessageParser Message parser base class. 
AbstractMessageWriter  
AbstractMethodError Thrown by the VM when an abstract method is called. 
AbstractOwnableSynchronizer A synchronizer that may be exclusively owned by a thread. 
AbstractPooledConnAdapter Abstract adapter from pool entries to managed client connections. 
AbstractPoolEntry A pool entry for use by connection manager implementations. 
AbstractPreferences This abstract class is a partial implementation of the abstract class Preferences, which can be used to simplify Preferences provider's implementation. 
AbstractQueue<E> This class provides skeletal implementations of some Queue operations. 
AbstractQueuedLongSynchronizer A version of AbstractQueuedSynchronizer in which synchronization state is maintained as a long
AbstractQueuedLongSynchronizer.ConditionObject Condition implementation for a AbstractQueuedLongSynchronizer serving as the basis of a Lock implementation. 
AbstractQueuedSynchronizer Provides a framework for implementing blocking locks and related synchronizers (semaphores, events, etc) that rely on first-in-first-out (FIFO) wait queues. 
AbstractQueuedSynchronizer.ConditionObject Condition implementation for a AbstractQueuedSynchronizer serving as the basis of a Lock implementation. 
AbstractSelectableChannel AbstractSelectableChannel is the base implementation class for selectable channels. 
AbstractSelectionKey AbstractSelectionKey is the base implementation class for selection keys. 
AbstractSelector AbstractSelector is the base implementation class for selectors. 
AbstractSequentialList<E> AbstractSequentialList is an abstract implementation of the List interface. 
AbstractSessionInputBuffer Abstract base class for session input buffers that stream data from a InputStream
AbstractSessionOutputBuffer Abstract base class for session output buffers that stream data to an OutputStream
AbstractSet<E> An AbstractSet is an abstract implementation of the Set interface. 
AbstractThreadedSyncAdapter An abstract implementation of a SyncAdapter that spawns a thread to invoke a sync operation. 
AbstractVerifier Abstract base class for all standard X509HostnameVerifier implementations. 
AbstractWindowedCursor A base class for Cursors that store their data in CursorWindows. 
AccelerateDecelerateInterpolator An interpolator where the rate of change starts and ends slowly but accelerates through the middle. 
AccelerateInterpolator An interpolator where the rate of change starts out slowly and and then accelerates. 
AccessControlContext Legacy security code; do not use. 
AccessControlException AccessControlException is thrown if the access control infrastructure denies protected access due to missing permissions. 
AccessController Legacy security code; do not use. 
AccessibilityDelegateCompat Helper for accessing View.AccessibilityDelegate introduced after API level 4 in a backwards compatible fashion. 
AccessibilityEvent

This class represents accessibility events that are sent by the system when something notable happens in the user interface. 

AccessibilityEventCompat Helper for accessing features in AccessibilityEvent introduced after API level 4 in a backwards compatible fashion. 
AccessibilityEventSource This interface is implemented by classes source of AccessibilityEvents. 
AccessibilityManager System level service that serves as an event dispatch for AccessibilityEvents, and provides facilities for querying the accessibility state of the system. 
AccessibilityManager.AccessibilityStateChangeListener Listener for the system accessibility state. 
AccessibilityManager.TouchExplorationStateChangeListener Listener for the system touch exploration state. 
AccessibilityManagerCompat Helper for accessing features in AccessibilityManager introduced after API level 4 in a backwards compatible fashion. 
AccessibilityManagerCompat.AccessibilityStateChangeListenerCompat Listener for the accessibility state. 
AccessibilityNodeInfo This class represents a node of the window content as well as actions that can be requested from its source. 
AccessibilityNodeInfo.AccessibilityAction A class defining an action that can be performed on an AccessibilityNodeInfo
AccessibilityNodeInfo.CollectionInfo Class with information if a node is a collection. 
AccessibilityNodeInfo.CollectionItemInfo Class with information if a node is a collection item. 
AccessibilityNodeInfo.RangeInfo Class with information if a node is a range. 
AccessibilityNodeInfoCompat Helper for accessing AccessibilityNodeInfo introduced after API level 4 in a backwards compatible fashion. 
AccessibilityNodeInfoCompat.AccessibilityActionCompat  
AccessibilityNodeInfoCompat.CollectionInfoCompat  
AccessibilityNodeInfoCompat.CollectionItemInfoCompat  
AccessibilityNodeInfoCompat.RangeInfoCompat  
AccessibilityNodeProvider This class is the contract a client should implement to enable support of a virtual view hierarchy rooted at a given view for accessibility purposes. 
AccessibilityNodeProviderCompat Helper for accessing AccessibilityNodeProvider introduced after API level 4 in a backwards compatible fashion. 
AccessibilityRecord Represents a record in an AccessibilityEvent and contains information about state change of its source View
AccessibilityRecordCompat Helper for accessing AccessibilityRecord introduced after API level 4 in a backwards compatible fashion. 
AccessibilityService An accessibility service runs in the background and receives callbacks by the system when AccessibilityEvents are fired. 
AccessibilityServiceInfo This class describes an AccessibilityService
AccessibilityServiceInfoCompat Helper for accessing features in AccessibilityService introduced after API level 4 in a backwards compatible fashion. 
AccessibilityWindowInfo This class represents a state snapshot of a window for accessibility purposes. 
AccessibleObject AccessibleObject is the superclass of all member reflection classes (Field, Constructor, Method). 
Account Value type that represents an Account in the AccountManager
AccountAuthenticatorActivity Base class for implementing an Activity that is used to help implement an AbstractAccountAuthenticator. 
AccountAuthenticatorResponse Object used to communicate responses back to the AccountManager  
AccountManager This class provides access to a centralized registry of the user's online accounts. 
AccountManagerCallback<V>  
AccountManagerFuture<V> A AccountManagerFuture represents the result of an asynchronous AccountManager call. 
AccountsException  
Acl The Access Control List (ACL) interface definition. 
AclEntry The Access Control List Entry interface definition. 
AclNotFoundException The exception, that is thrown when a reference to a non-existent Access Control List (ACL) is made. 
AcousticEchoCanceler Acoustic Echo Canceler (AEC). 
Action An action that can be shown on a details page. 
ActionBar A primary toolbar within the activity that may display the activity title, application-level navigation affordances, and other interactive items. 
ActionBar A primary toolbar within the activity that may display the activity title, application-level navigation affordances, and other interactive items. 
ActionBar.LayoutParams Per-child layout information associated with action bar custom views. 
ActionBar.LayoutParams Per-child layout information associated with action bar custom views. 
ActionBar.OnMenuVisibilityListener Listener for receiving events when action bar menus are shown or hidden. 
ActionBar.OnMenuVisibilityListener Listener for receiving events when action bar menus are shown or hidden. 
ActionBar.OnNavigationListener This interface was deprecated in API level 21. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead.  
ActionBar.OnNavigationListener This interface is deprecated. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead.  
ActionBar.Tab This class was deprecated in API level 21. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead.  
ActionBar.Tab This class is deprecated. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead.  
ActionBar.TabListener This interface was deprecated in API level 21. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead.  
ActionBar.TabListener This interface is deprecated. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead.  
ActionBarActivity Base class for activities that use the support library action bar features. 
ActionBarDrawerToggle This class is deprecated. Please use ActionBarDrawerToggle in support-v7-appcompat.

This class provides a handy way to tie together the functionality of DrawerLayout and the framework ActionBar to implement the recommended design for navigation drawers.

To use ActionBarDrawerToggle, create one in your Activity and call through to the following methods corresponding to your Activity callbacks:

Call syncState() from your Activity's onPostCreate to synchronize the indicator with the state of the linked DrawerLayout after onRestoreInstanceState has occurred.

ActionBarDrawerToggle can be used directly as a DrawerLayout.DrawerListener, or if you are already providing your own listener, call through to each of the listener methods from your own.

 
ActionBarDrawerToggle This class provides a handy way to tie together the functionality of DrawerLayout and the framework ActionBar to implement the recommended design for navigation drawers. 
ActionBarDrawerToggle.Delegate  
ActionBarDrawerToggle.Delegate  
ActionBarDrawerToggle.DelegateProvider Allows an implementing Activity to return an ActionBarDrawerToggle.Delegate to use with ActionBarDrawerToggle. 
ActionBarDrawerToggle.DelegateProvider Allows an implementing Activity to return an ActionBarDrawerToggle.Delegate to use with ActionBarDrawerToggle. 
ActionMenuView ActionMenuView is a presentation of a series of menu options as a View. 
ActionMenuView ActionMenuView is a presentation of a series of menu options as a View. 
ActionMenuView.LayoutParams  
ActionMenuView.LayoutParams  
ActionMenuView.OnMenuItemClickListener Interface responsible for receiving menu item click events if the items themselves do not have individual item click listeners. 
ActionMenuView.OnMenuItemClickListener Interface responsible for receiving menu item click events if the items themselves do not have individual item click listeners. 
ActionMode Represents a contextual mode of the user interface. 
ActionMode Represents a contextual mode of the user interface. 
ActionMode.Callback Callback interface for action modes. 
ActionMode.Callback Callback interface for action modes. 
ActionProvider This class is a mediator for accomplishing a given task, for example sharing a file. 
ActionProvider An ActionProvider defines rich menu interaction in a single component. 
ActionProvider.VisibilityListener Listens to changes in visibility as reported by refreshVisibility()
ActionProvider.VisibilityListener Listens to changes in visibility as reported by refreshVisibility()
Activity An activity is a single, focused thing that the user can do. 
ActivityCompat Helper for accessing features in Activity introduced after API level 4 in a backwards compatible fashion. 
ActivityGroup This class was deprecated in API level 13. Use the new Fragment and FragmentManager APIs instead; these are also available on older platforms through the Android compatibility package.  
ActivityInfo Information you can retrieve about a particular application activity or receiver. 
ActivityInfoCompat Helper for accessing features in ActivityInfo introduced after API level 4 in a backwards compatible fashion. 
ActivityInstrumentationTestCase<T extends Activity> This class was deprecated in API level 3. new tests should be written using ActivityInstrumentationTestCase2, which provides more options for configuring the Activity under test  
ActivityInstrumentationTestCase2<T extends Activity> This class provides functional testing of a single activity. 
ActivityManager Interact with the overall activities running in the system. 
ActivityManager.AppTask The AppTask allows you to manage your own application's tasks. 
ActivityManager.MemoryInfo Information you can retrieve about the available memory through getMemoryInfo(ActivityManager.MemoryInfo)
ActivityManager.ProcessErrorStateInfo Information you can retrieve about any processes that are in an error condition. 
ActivityManager.RecentTaskInfo Information you can retrieve about tasks that the user has most recently started or visited. 
ActivityManager.RunningAppProcessInfo Information you can retrieve about a running process. 
ActivityManager.RunningServiceInfo Information you can retrieve about a particular Service that is currently running in the system. 
ActivityManager.RunningTaskInfo Information you can retrieve about a particular task that is currently "running" in the system. 
ActivityManager.TaskDescription Information you can set and retrieve about the current activity within the recent task list. 
ActivityManagerCompat Helper for accessing features in ActivityManager introduced after API level 4 in a backwards compatible fashion. 
ActivityNotFoundException This exception is thrown when a call to startActivity(Intent) or one of its variants fails because an Activity can not be found to execute the given Intent. 
ActivityOptions Helper class for building an options Bundle that can be used with Context.startActivity(Intent, Bundle) and related methods. 
ActivityOptionsCompat Helper for accessing features in ActivityOptions introduced in API level 16 in a backwards compatible fashion. 
ActivityTestCase This is common code used to support Activity test cases. 
ActivityUnitTestCase<T extends Activity> This class provides isolated testing of a single activity. 
Adapter An Adapter object acts as a bridge between an AdapterView and the underlying data for that view. 
AdapterHelperTest  
AdapterView<T extends Adapter> An AdapterView is a view whose children are determined by an Adapter
AdapterView.AdapterContextMenuInfo Extra menu information provided to the onCreateContextMenu(ContextMenu, View, ContextMenuInfo) callback when a context menu is brought up for this AdapterView. 
AdapterView.OnItemClickListener Interface definition for a callback to be invoked when an item in this AdapterView has been clicked. 
AdapterView.OnItemLongClickListener Interface definition for a callback to be invoked when an item in this view has been clicked and held. 
AdapterView.OnItemSelectedListener Interface definition for a callback to be invoked when an item in this view has been selected. 
AdapterViewAnimator Base class for a AdapterView that will perform animations when switching between its views. 
AdapterViewFlipper Simple ViewAnimator that will animate between two or more views that have been added to it. 
Address A class representing an Address, i.e, a set of Strings describing a location. 
Adler32 The Adler-32 class is used to compute the Adler32 checksum from a set of data. 
Advanceable This interface can be implemented by any collection-type view which has a notion of progressing through its set of children. 
AdvertiseCallback Bluetooth LE advertising callbacks, used to deliver advertising operation status. 
AdvertiseData Advertise data packet container for Bluetooth LE advertising. 
AdvertiseData.Builder Builder for AdvertiseData
AdvertiseSettings The AdvertiseSettings provide a way to adjust advertising preferences for each Bluetooth LE advertisement instance. 
AdvertiseSettings.Builder Builder class for AdvertiseSettings
AEADBadTagException Thrown by a Cipher that is using an Authenticated Encryption with Additional Data (AEAD) mode such as Galois/Counter Mode (GCM) and the tag failed verification. 
AlarmClock The AlarmClock provider contains an Intent action and extras that can be used to start an Activity to set a new alarm or timer in an alarm clock application. 
AlarmManager This class provides access to the system alarm services. 
AlarmManager.AlarmClockInfo An immutable description of an alarm clock. 
AlertDialog A subclass of Dialog that can display one, two or three buttons. 
AlertDialog.Builder  
AlgorithmParameterGenerator AlgorithmParameterGenerator is an engine class which is capable of generating parameters for the algorithm it was initialized with. 
AlgorithmParameterGeneratorSpi AlgorithmParameterGeneratorSpi is the Service Provider Interface (SPI) definition for AlgorithmParameterGenerator
AlgorithmParameters AlgorithmParameters is an engine class which provides algorithm parameters. 
AlgorithmParameterSpec The marker interface for algorithm parameter specifications. 
AlgorithmParametersSpi AlgorithmParametersSpi is the Service Provider Interface (SPI) definition for AlgorithmParameters
AliasActivity Stub activity that launches another activity (and then finishes itself) based on information in its component's manifest meta-data. 
AlignmentSpan  
AlignmentSpan.Standard  
AllClientPNames Collected parameter names for the HttpClient module. 
Allocation

This class provides the primary method through which data is passed to and from RenderScript kernels. 

Allocation

This class provides the primary method through which data is passed to and from RenderScript kernels. 

Allocation.MipmapControl Controls mipmap behavior when using the bitmap creation and update functions. 
Allocation.MipmapControl Controls mipmap behavior when using the bitmap creation and update functions. 
Allocation.OnBufferAvailableListener Interface to handle notification when new buffers are available via USAGE_IO_INPUT
AllocationAdapter Only intended for use by generated reflected code. 
AllowAllHostnameVerifier The ALLOW_ALL HostnameVerifier essentially turns hostname verification off. 
AllPermission Legacy security code; do not use. 
AlphaAnimation An animation that controls the alpha level of an object. 
AlphabetIndexer A helper class for adapters that implement the SectionIndexer interface. 
AlreadyConnectedException An AlreadyConnectedException is thrown when an attempt is made to connect a SocketChannel that is already connected. 
AlteredCharSequence An AlteredCharSequence is a CharSequence that is largely mirrored from another CharSequence, except that a specified range of characters are mirrored from a different char array instead. 
AlwaysOnHotwordDetector A class that lets a VoiceInteractionService implementation interact with always-on keyphrase detection APIs. 
AlwaysOnHotwordDetector.Callback Callbacks for always-on hotword detection. 
AlwaysOnHotwordDetector.EventPayload Additional payload for onDetected(AlwaysOnHotwordDetector.EventPayload)
AnalogClock This widget display an analogic clock with two hands for hours and minutes. 
AndroidCharacter AndroidCharacter exposes some character properties that are not easily accessed from java.lang.Character. 
AndroidException Base class for all checked exceptions thrown by the Android frameworks. 
AndroidHttpClient Implementation of the Apache DefaultHttpClient that is configured with reasonable default settings and registered schemes for Android. 
AndroidRuntimeException Base class for all unchecked exceptions thrown by the Android frameworks. 
AndroidTestCase Extend this if you need to access Resources or other things that depend on Activity Context. 
AndroidTestRunner  
Animatable Interface that drawables supporting animations should implement. 
AnimatedStateListDrawable Drawable containing a set of Drawable keyframes where the currently displayed keyframe is chosen based on the current state set. 
AnimatedVectorDrawable This class uses ObjectAnimator and AnimatorSet to animate the properties of a VectorDrawable to create an animated drawable. 
Animation Abstraction for an Animation that can be applied to Views, Surfaces, or other objects. 
Animation.AnimationListener

An animation listener receives notifications from an animation. 

Animation.Description Utility class to parse a string description of a size. 
AnimationDrawable An object used to create frame-by-frame animations, defined by a series of Drawable objects, which can be used as a View object's background. 
AnimationSet Represents a group of Animations that should be played together. 
AnimationUtils Defines common utilities for working with animations. 
Animator This is the superclass for classes which provide basic support for animations which can be started, ended, and have AnimatorListeners added to them. 
Animator.AnimatorListener

An animation listener receives notifications from an animation. 

Animator.AnimatorPauseListener A pause listener receives notifications from an animation when the animation is paused or resumed
AnimatorInflater This class is used to instantiate animator XML files into Animator objects. 
AnimatorListenerAdapter This adapter class provides empty implementations of the methods from Animator.AnimatorListener
AnimatorRes Denotes that an integer parameter, field or method return value is expected to be an animator resource reference (e.g. 
AnimatorSet This class plays a set of Animator objects in the specified order. 
AnimatorSet.Builder The Builder object is a utility class to facilitate adding animations to a AnimatorSet along with the relationships between the various animations. 
AnimRes Denotes that an integer parameter, field or method return value is expected to be an anim resource reference (e.g. 
AnnotatedElement This interface provides reflective access to annotation information. 
Annotation Annotations are simple key-value pairs that are preserved across TextView save/restore cycles and can be used to keep application-specific data that needs to be maintained for regions of text. 
Annotation Defines the interface implemented by all annotations. 
Annotation Wrapper for a text attribute value which represents an annotation. 
AnnotationFormatError Indicates that an annotation in the binary representation of a class is syntactically incorrect and the annotation parser is unable to process it. 
AnnotationTypeMismatchException Indicates that an annotation type has changed since it was compiled or serialized. 
AnticipateInterpolator An interpolator where the change starts backward then flings forward. 
AnticipateOvershootInterpolator An interpolator where the change starts backward then flings forward and overshoots the target value and finally goes back to the final value. 
AnyRes Denotes that an integer parameter, field or method return value is expected to be a resource reference of any type. 
Appendable Declares methods to append characters or character sequences. 
Application Base class for those who need to maintain global application state. 
Application.ActivityLifecycleCallbacks  
Application.OnProvideAssistDataListener Callback interface for use with registerOnProvideAssistDataListener(Application.OnProvideAssistDataListener) and unregisterOnProvideAssistDataListener(Application.OnProvideAssistDataListener)
ApplicationErrorReport Describes an application error. 
ApplicationErrorReport.AnrInfo Describes an application not responding error. 
ApplicationErrorReport.BatteryInfo Describes a battery usage report. 
ApplicationErrorReport.CrashInfo Describes an application crash. 
ApplicationErrorReport.RunningServiceInfo Describes a running service report. 
ApplicationInfo Information you can retrieve about a particular application. 
ApplicationInfo.DisplayNameComparator  
ApplicationTestCase<T extends Application> This test case provides a framework in which you can test Application classes in a controlled environment. 
AppOpsManager API for interacting with "application operation" tracking. 
AppOpsManager.OnOpChangedListener Callback for notification of changes to operation state. 
AppWidgetHost AppWidgetHost provides the interaction with the AppWidget service for apps, like the home screen, that want to embed AppWidgets in their UI. 
AppWidgetHostView Provides the glue to show AppWidget views. 
AppWidgetManager Updates AppWidget state; gets information about installed AppWidget providers and other AppWidget related state. 
AppWidgetProvider A convenience class to aid in implementing an AppWidget provider. 
AppWidgetProviderInfo Describes the meta data for an installed AppWidget provider. 
ArcMotion A PathMotion that generates a curved path along an arc on an imaginary circle containing the two points. 
ArcShape Creates an arc shape. 
ArgbEvaluator This evaluator can be used to perform type interpolation between integer values that represent ARGB colors. 
ArithmeticException Thrown when the an invalid arithmetic operation is attempted. 
Array Provides static methods to create and access arrays dynamically. 
Array A Java representation of the SQL ARRAY type. 
ArrayAdapter<T> A concrete BaseAdapter that is backed by an array of arbitrary objects. 
ArrayBlockingQueue<E> A bounded blocking queue backed by an array. 
ArrayDeque<E> Resizable-array implementation of the Deque interface. 
ArrayIndexOutOfBoundsException Thrown when the an array is indexed with a value less than zero, or greater than or equal to the size of the array. 
ArrayList<E> ArrayList is an implementation of List, backed by an array. 
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. 
ArrayMap<K, V> ArrayMap is a generic key->value mapping data structure that is designed to be more memory efficient than a traditional HashMap
ArrayObjectAdapter An ObjectAdapter implemented with an ArrayList
ArrayRes Denotes that an integer parameter, field or method return value is expected to be an array resource reference (e.g. 
Arrays Arrays contains static methods which operate on arrays. 
ArrayStoreException Thrown when a program attempts to store an element of an incompatible type in an array. 
ArrowKeyMovementMethod A movement method that provides cursor movement and selection. 
Assert A set of assert methods. 
AssertionError Thrown when an assertion has failed. 
AssertionFailedError This class was deprecated in API level 16. use junit.framework.AssertionFailedError  
AssertionFailedError Thrown when an assertion failed. 
AssetFileDescriptor File descriptor of an entry in the AssetManager. 
AssetFileDescriptor.AutoCloseInputStream An InputStream you can create on a ParcelFileDescriptor, which will take care of calling ParcelFileDescritor.close() for you when the stream is closed. 
AssetFileDescriptor.AutoCloseOutputStream An OutputStream you can create on a ParcelFileDescriptor, which will take care of calling ParcelFileDescritor.close() for you when the stream is closed. 
AssetManager Provides access to an application's raw asset files; see Resources for the way most applications will want to retrieve their resource data. 
AssetManager.AssetInputStream  
AsynchronousCloseException An AsynchronousCloseException is thrown when the underlying channel for an I/O operation is closed by another thread. 
AsyncPlayer Plays a series of audio URIs, but does all the hard work on another thread so that any slowness with preparing or loading doesn't block the calling thread. 
AsyncQueryHandler A helper class to help make handling asynchronous ContentResolver queries easier. 
AsyncQueryHandler.WorkerArgs  
AsyncQueryHandler.WorkerHandler  
AsyncTask<Params, Progress, Result>

AsyncTask enables proper and easy use of the UI thread. 

AsyncTask.Status Indicates the current status of the task. 
AsyncTaskCompat Helper for accessing features in AsyncTask introduced after API level 4 in a backwards compatible fashion. 
AsyncTaskLoader<D> Abstract Loader that provides an AsyncTask to do the work. 
AsyncTaskLoader<D> Static library support version of the framework's AsyncTaskLoader
AtomicBoolean A boolean value that may be updated atomically. 
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. 
AtomicFile Helper class for performing atomic operations on a file by creating a backup file until a write has successfully completed. 
AtomicInteger An int value that may be updated atomically. 
AtomicIntegerArray An int array in which elements may be updated atomically. 
AtomicIntegerFieldUpdater<T> A reflection-based utility that enables atomic updates to designated volatile int fields of designated classes. 
AtomicLong A long value that may be updated atomically. 
AtomicLongArray A long array in which elements may be updated atomically. 
AtomicLongFieldUpdater<T> A reflection-based utility that enables atomic updates to designated volatile long fields of designated classes. 
AtomicMarkableReference<V> An AtomicMarkableReference maintains an object reference along with a mark bit, that can be updated atomically. 
AtomicReference<V> An object reference that may be updated atomically. 
AtomicReferenceArray<E> An array of object references in which elements may be updated atomically. 
AtomicReferenceFieldUpdater<T, V> A reflection-based utility that enables atomic updates to designated volatile reference fields of designated classes. 
AtomicStampedReference<V> An AtomicStampedReference maintains an object reference along with an integer "stamp", that can be updated atomically. 
Attr The Attr interface represents an attribute in an Element object. 
AttributedCharacterIterator Extends the CharacterIterator interface, adding support for iterating over attributes and not only characters. 
AttributedCharacterIterator.Attribute Defines keys for text attributes. 
AttributedString Holds a string with attributes describing the characters of this string. 
AttributeList This interface was deprecated in API level 1. This interface has been replaced by the SAX2 Attributes interface, which includes Namespace support. 
AttributeListImpl This class was deprecated in API level 1. This class implements a deprecated interface, AttributeList; that interface has been replaced by Attributes, which is implemented in the AttributesImpl helper class. 
Attributes The Attributes class is used to store values for manifest entries. 
Attributes Interface for a list of XML attributes. 
Attributes.Name The name part of the name/value pairs constituting an attribute as defined by the specification of the JAR manifest. 
Attributes2 SAX2 extension to augment the per-attribute information provided though Attributes
Attributes2Impl SAX2 extension helper for additional Attributes information, implementing the Attributes2 interface. 
AttributeSet A collection of attributes, as found associated with a tag in an XML document. 
AttributesImpl Default implementation of the Attributes interface. 
AttrRes Denotes that an integer parameter, field or method return value is expected to be an attribute reference (e.g. 
AudioAttributes A class to encapsulate a collection of attributes describing information about an audio stream. 
AudioAttributes.Builder Builder class for AudioAttributes objects. 
AudioCodec This class defines a collection of audio codecs to be used with AudioStreams. 
AudioEffect AudioEffect is the base class for controlling audio effects provided by the android audio framework. 
AudioEffect.Descriptor The effect descriptor contains information on a particular effect implemented in the audio framework:
  • type: UUID identifying the effect type. 
AudioEffect.OnControlStatusChangeListener The OnControlStatusChangeListener interface defines a method called by the AudioEffect when a the control of the effect engine is gained or lost by the application  
AudioEffect.OnEnableStatusChangeListener The OnEnableStatusChangeListener interface defines a method called by the AudioEffect when a the enabled state of the effect engine was changed by the controlling application. 
AudioFormat The AudioFormat class is used to access a number of audio format and channel configuration constants. 
AudioFormat.Builder Builder class for AudioFormat objects. 
AudioGroup An AudioGroup is an audio hub for the speaker, the microphone, and AudioStreams. 
AudioManager AudioManager provides access to volume and ringer mode control. 
AudioManager.OnAudioFocusChangeListener Interface definition for a callback to be invoked when the audio focus of the system is updated. 
AudioRecord The AudioRecord class manages the audio resources for Java applications to record audio from the audio input hardware of the platform. 
AudioRecord.OnRecordPositionUpdateListener Interface definition for a callback to be invoked when an AudioRecord has reached a notification marker set by setNotificationMarkerPosition(int) or for periodic updates on the progress of the record head, as set by setPositionNotificationPeriod(int)
AudioStream An AudioStream is a RtpStream which carrys audio payloads over Real-time Transport Protocol (RTP). 
AudioTimestamp Structure that groups a position in frame units relative to an assumed audio stream, together with the estimated time when that frame was presented or is committed to be presented. 
AudioTrack The AudioTrack class manages and plays a single audio resource for Java applications. 
AudioTrack.OnPlaybackPositionUpdateListener Interface definition for a callback to be invoked when the playback head position of an AudioTrack has reached a notification marker or has increased by a certain period. 
AUTH Constants and static helpers related to the HTTP authentication. 
AuthenticationException Signals a failure in authentication process 
AuthenticationHandler  
Authenticator An implementation of this class is able to obtain authentication information for a connection in several ways. 
Authenticator.RequestorType Enumeration class for the origin of the authentication request. 
AuthenticatorDescription A Parcelable value type that contains information about an account authenticator. 
AuthenticatorException  
AuthParamBean  
AuthParams This class implements an adaptor around the HttpParams interface to simplify manipulation of the HTTP authentication specific parameters. 
AuthPermission Legacy security code; do not use. 
AuthPNames Parameter names for HttpAuth. 
AuthPolicy  
AuthProvider Legacy security code; do not use. 
AuthScheme

This interface represents an abstract challenge-response oriented authentication scheme. 

AuthSchemeBase Abstract authentication scheme class that serves as a basis for all authentication schemes supported by HttpClient. 
AuthSchemeFactory  
AuthSchemeRegistry Authentication scheme registry that can be used to obtain the corresponding authentication scheme implementation for a given type of authorization challenge. 
AuthScope The class represents an authentication scope consisting of a host name, a port number, a realm name and an authentication scheme name which Credentials apply to. 
AuthState This class provides detailed information about the state of the authentication process. 
AutoCloseable Defines an interface for classes that can (or need to) be closed once they are not used any longer. 
AutoCompleteTextView

An editable text view that shows completion suggestions automatically while the user is typing. 

AutoCompleteTextView.OnDismissListener Listener to respond to the AutoCompleteTextView's completion list being dismissed. 
AutoCompleteTextView.Validator This interface is used to make sure that the text entered in this TextView complies to a certain format. 
AutomaticGainControl Automatic Gain Control (AGC). 
AutoScrollHelper AutoScrollHelper is a utility class for adding automatic edge-triggered scrolling to Views. 
AutoText This class accesses a dictionary of corrections to frequent misspellings. 
AutoTransition Utility class for creating a default transition that automatically fades, moves, and resizes views during a scene change. 
AvoidXfermode AvoidXfermode xfermode will draw the src everywhere except on top of the opColor or, depending on the Mode, draw only on top of the opColor. 
AvoidXfermode.Mode  

B

BackgroundColorSpan  
BackgroundManager Supports background image continuity between multiple Activities. 
BackingStoreException An exception to indicate that an error was encountered while accessing the backing store. 
BackupAgent Provides the central interface between an application and Android's data backup infrastructure. 
BackupAgentHelper A convenient BackupAgent wrapper class that automatically manages heterogeneous data sets within the backup data, each identified by a unique key prefix. 
BackupDataInput Provides the structured interface through which a BackupAgent reads information from the backup data set, via its onRestore() method. 
BackupDataInputStream Provides an InputStream-like interface for accessing an entity's data during a restore operation. 
BackupDataOutput Provides the structured interface through which a BackupAgent commits information to the backup data set, via its onBackup() method. 
BackupHelper Defines the calling interface that BackupAgentHelper uses when dispatching backup and restore operations to the installed helpers. 
BackupManager The interface through which an application interacts with the Android backup service to request backup and restore operations. 
BadPaddingException The exception that is thrown when a padding mechanism is expected for the input data, but the input data does not have the proper padding bytes. 
BadParcelableException The object you are calling has died, because its hosting process no longer exists. 
Base64 Utilities for encoding and decoding the Base64 representation of binary data. 
Base64DataException This exception is thrown by Base64InputStream or Base64OutputStream when an error is detected in the data being decoded. 
Base64InputStream An InputStream that does Base64 decoding on the data read through it. 
Base64OutputStream An OutputStream that does Base64 encoding on the data written to it, writing the resulting data to another OutputStream. 
BaseAdapter Common base class of common implementation for an Adapter that can be used in both ListView (by implementing the specialized ListAdapter interface) and Spinner (by implementing the specialized SpinnerAdapter interface). 
BaseBundle A mapping from String values to various types. 
BaseCardView A card style layout that responds to certain state changes. 
BaseCardView.LayoutParams Per-child layout information associated with BaseCardView. 
BaseColumns  
BaseDexClassLoader Base class for common functionality between various dex-based ClassLoader implementations. 
BaseExpandableListAdapter Base class for a ExpandableListAdapter used to provide data and Views from some data to an expandable list view. 
BaseInputConnection Base class for implementors of the InputConnection interface, taking care of most of the common behavior for providing a connection to an Editable. 
BaseKeyListener Abstract base class for key listeners. 
BaseMovementMethod Base classes for movement methods. 
BaseObj BaseObj is the base class for all RenderScript objects owned by a RS context. 
BaseObj BaseObj is the base class for all RenderScript objects owned by a RS context. 
BaseRecyclerViewInstrumentationTest  
BaseRecyclerViewInstrumentationTest.AttachDetachCountingAdapter  
BaseRecyclerViewInstrumentationTest.ViewAttachDetachCounter  
BaseTestRunner Base class for all test runners. 
BasicClientCookie HTTP "magic-cookie" represents a piece of state information that the HTTP agent and the target server can exchange to maintain a session. 
BasicClientCookie2 HTTP "magic-cookie" represents a piece of state information that the HTTP agent and the target server can exchange to maintain a session as specified by RFC2965. 
BasicCommentHandler  
BasicCookieStore Default implementation of CookieStore 
BasicCredentialsProvider Default implementation of CredentialsProvider 
BasicDomainHandler  
BasicEofSensorWatcher Basic implementation of EofSensorWatcher
BasicExpiresHandler  
BasicHeader Represents an HTTP header field. 
BasicHeaderElement One element of an HTTP header's value. 
BasicHeaderElementIterator Basic implementation of a HeaderElementIterator
BasicHeaderIterator Basic implementation of a HeaderIterator
BasicHeaderValueFormatter Basic implementation for formatting header value elements. 
BasicHeaderValueParser Basic implementation for parsing header values into elements. 
BasicHttpContext Default implementation of the HttpContext
BasicHttpEntity A generic streamed entity being received on a connection. 
BasicHttpEntityEnclosingRequest Basic implementation of a request with an entity that can be modified. 
BasicHttpParams This class represents a collection of HTTP protocol parameters. 
BasicHttpProcessor Keeps lists of interceptors for processing requests and responses. 
BasicHttpRequest Basic implementation of an HTTP request that can be modified. 
BasicHttpResponse Basic implementation of an HTTP response that can be modified. 
BasicLineFormatter Interface for formatting elements of the HEAD section of an HTTP message. 
BasicLineParser Basic parser for lines in the head section of an HTTP message. 
BasicListHeaderIterator Implementation of a HeaderIterator based on a List
BasicManagedEntity An entity that releases a connection
BasicMaxAgeHandler  
BasicNameValuePair A simple class encapsulating an attribute/value pair. 
BasicPathHandler  
BasicPermission Legacy security code; do not use. 
BasicPooledConnAdapter A connection wrapper and callback handler. 
BasicPoolEntry Basic implementation of a connection pool entry. 
BasicPoolEntryRef A weak reference to a BasicPoolEntry
BasicRequestLine The first line of an HttpRequest
BasicResponseHandler A ResponseHandler that returns the response body as a String for successful (2xx) responses. 
BasicRouteDirector Basic implementation of an HttpRouteDirector
BasicScheme

Basic authentication scheme as defined in RFC 2617. 

BasicSchemeFactory  
BasicSecureHandler  
BasicStatusLine Represents a status line as returned from a HTTP server. 
BasicTokenIterator Basic implementation of a TokenIterator
BasicUserPrincipal Basic user principal used for HTTP authentication 
BassBoost Bass boost is an audio effect to boost or amplify low frequencies of the sound. 
BassBoost.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the BassBoost when a parameter value has changed. 
BassBoost.Settings The Settings class regroups all bass boost parameters. 
BatchUpdateException This exception is thrown if a problem occurs during a batch update operation. 
BatteryManager The BatteryManager class contains strings and constants used for values in the ACTION_BATTERY_CHANGED Intent, and provides a method for querying battery and charging properties. 
BestMatchSpec 'Meta' cookie specification that selects a cookie policy depending on the format of the cookie(s) 
BestMatchSpecFactory  
Bidi Implements the Unicode Bidirectional Algorithm
BidiFormatter Utility class for formatting text for display in a potentially opposite-directionality context without garbling. 
BidiFormatter Utility class for formatting text for display in a potentially opposite-directionality context without garbling. 
BidiFormatter.Builder A class for building a BidiFormatter with non-default options. 
BidiFormatter.Builder A class for building a BidiFormatter with non-default options. 
BidirectionalTypeConverter<T, V> Abstract base class used convert type T to another type V and back again. 
BigDecimal An immutable arbitrary-precision signed decimal. 
BigInteger An immutable arbitrary-precision signed integer. 
Binder Base class for a remotable object, the core part of a lightweight remote procedure call mechanism defined by IBinder
BindException A BindException is thrown when a process cannot bind a local address/port, either because it is already bound or reserved by the OS. 
Bitmap  
Bitmap.CompressFormat Specifies the known formats a bitmap can be compressed into  
Bitmap.Config Possible bitmap configurations. 
BitmapCompat Helper for accessing features in Bitmap introduced after API level 4 in a backwards compatible fashion. 
BitmapDrawable A Drawable that wraps a bitmap and can be tiled, stretched, or aligned. 
BitmapFactory Creates Bitmap objects from various sources, including files, streams, and byte-arrays. 
BitmapFactory.Options  
BitmapRegionDecoder BitmapRegionDecoder can be used to decode a rectangle region from an image. 
BitmapShader Shader used to draw a bitmap as a texture. 
BitSet The BitSet class implements a bit array
BlackLevelPattern Immutable class to store a 4-element vector of integers corresponding to a 2x2 pattern of color channel offsets used for the black level offsets of each color channel. 
Blob A Java interface representing the SQL BLOB type. 
BlockingDeque<E> A Deque that additionally supports blocking operations that wait for the deque to become non-empty when retrieving an element, and wait for space to become available in the deque when storing an element. 
BlockingQueue<E> A Queue that additionally supports operations that wait for the queue to become non-empty when retrieving an element, and wait for space to become available in the queue when storing an element. 
BluetoothA2dp This class provides the public APIs to control the Bluetooth A2DP profile. 
BluetoothAdapter Represents the local device Bluetooth adapter. 
BluetoothAdapter.LeScanCallback Callback interface used to deliver LE scan results. 
BluetoothAssignedNumbers Bluetooth Assigned Numbers. 
BluetoothClass Represents a Bluetooth class, which describes general characteristics and capabilities of a device. 
BluetoothClass.Device Defines all device class constants. 
BluetoothClass.Device.Major Defines all major device class constants. 
BluetoothClass.Service Defines all service class constants. 
BluetoothDevice Represents a remote Bluetooth device. 
BluetoothGatt Public API for the Bluetooth GATT Profile. 
BluetoothGattCallback This abstract class is used to implement BluetoothGatt callbacks. 
BluetoothGattCharacteristic Represents a Bluetooth GATT Characteristic

A GATT characteristic is a basic data element used to construct a GATT service, BluetoothGattService

BluetoothGattDescriptor Represents a Bluetooth GATT Descriptor

GATT Descriptors contain additional information and attributes of a GATT characteristic, BluetoothGattCharacteristic

BluetoothGattServer Public API for the Bluetooth GATT Profile server role. 
BluetoothGattServerCallback This abstract class is used to implement BluetoothGattServer callbacks. 
BluetoothGattService Represents a Bluetooth GATT Service

Gatt Service contains a collection of BluetoothGattCharacteristic, as well as referenced services. 

BluetoothHeadset Public API for controlling the Bluetooth Headset Service. 
BluetoothHealth Public API for Bluetooth Health Profile. 
BluetoothHealthAppConfiguration The Bluetooth Health Application Configuration that is used in conjunction with the BluetoothHealth class. 
BluetoothHealthCallback This abstract class is used to implement BluetoothHealth callbacks. 
BluetoothLeAdvertiser This class provides a way to perform Bluetooth LE advertise operations, such as starting and stopping advertising. 
BluetoothLeScanner This class provides methods to perform scan related operations for Bluetooth LE devices. 
BluetoothManager High level manager used to obtain an instance of an BluetoothAdapter and to conduct overall Bluetooth Management. 
BluetoothProfile Public APIs for the Bluetooth Profiles. 
BluetoothProfile.ServiceListener An interface for notifying BluetoothProfile IPC clients when they have been connected or disconnected to the service. 
BluetoothServerSocket A listening Bluetooth socket. 
BluetoothSocket A connected or connecting Bluetooth socket. 
BlurMaskFilter This takes a mask, and blurs its edge by the specified radius. 
BlurMaskFilter.Blur  
Boolean The wrapper for the primitive type boolean
BoolRes Denotes that an integer parameter, field or method return value is expected to be a boolean resource reference. 
BoringLayout A BoringLayout is a very simple Layout implementation for text that fits on a single line and is all left-to-right characters. 
BoringLayout.Metrics  
BounceInterpolator An interpolator where the change bounces at the end. 
BreakIterator Locates boundaries in text. 
BroadcastReceiver Base class for code that will receive intents sent by sendBroadcast(). 
BroadcastReceiver.PendingResult State for a result that is pending for a broadcast receiver. 
BrokenBarrierException Exception thrown when a thread tries to wait upon a barrier that is in a broken state, or which enters the broken state while the thread is waiting. 
BrowseFragment A fragment for creating Leanback browse screens. 
BrowseFragment.BrowseTransitionListener Listener for transitions between browse headers and rows. 
Browser  
Browser.BookmarkColumns Column definitions for the mixed bookmark and history items available at BOOKMARKS_URI
Browser.SearchColumns Column definitions for the search history table, available at SEARCHES_URI
BrowserCompatHostnameVerifier The HostnameVerifier that works the same way as Curl and Firefox. 
BrowserCompatSpec Cookie specification that strives to closely mimic (mis)behavior of common web browser applications such as Microsoft Internet Explorer and Mozilla FireFox. 
BrowserCompatSpecFactory  
BrowseSupportFragment A fragment for creating Leanback browse screens. 
BrowseSupportFragment.BrowseTransitionListener Listener for transitions between browse headers and rows. 
BucketTest  
Buffer A buffer is a list of elements of a specific primitive type. 
BufferedHeader This class represents a raw HTTP header whose content is parsed 'on demand' only when the header value needs to be consumed. 
BufferedHttpEntity A wrapping entity that buffers it content if necessary. 
BufferedInputStream Wraps an existing InputStream and buffers the input. 
BufferedOutputStream Wraps an existing OutputStream and buffers the output. 
BufferedReader Wraps an existing Reader and buffers the input. 
BufferedWriter Wraps an existing Writer and buffers the output. 
BufferOverflowException A BufferOverflowException is thrown when elements are written to a buffer but there is not enough remaining space in the buffer. 
BufferUnderflowException A BufferUnderflowException is thrown when elements are read from a buffer but there are not enough remaining elements in the buffer. 
Build Information about the current build, extracted from system properties. 
Build.VERSION Various version strings. 
Build.VERSION_CODES Enumeration of the currently known SDK version codes. 
BulletSpan  
Bundle A mapping from String values to various Parcelable types. 
Button Represents a push-button widget. 
Byte The wrapper for the primitive type byte
Byte2 Class for exposing the native RenderScript byte2 type back to the Android system. 
Byte2 Class for exposing the native RenderScript byte2 type back to the Android system. 
Byte3 Class for exposing the native RenderScript byte3 type back to the Android system. 
Byte3 Class for exposing the native RenderScript byte3 type back to the Android system. 
Byte4 Class for exposing the native RenderScript byte4 type back to the Android system. 
Byte4 Class for exposing the native RenderScript byte4 type back to the Android system. 
ByteArrayBuffer A resizable byte array. 
ByteArrayEntity An entity whose content is retrieved from a byte array. 
ByteArrayInputStream A specialized InputStream for reading the contents of a byte array. 
ByteArrayOutputStream A specialized OutputStream for class for writing content to an (internal) byte array. 
ByteBuffer A buffer for bytes. 
ByteChannel A ByteChannel is both readable and writable. 
ByteOrder Defines byte order constants. 

C

CacheRequest CacheRequest is a kind of channel for storing resource data in the ResponseCache
CacheResponse A response cache entry. 
Calendar Calendar is an abstract base class for converting between a Date object and a set of integer fields such as YEAR, MONTH, DAY, HOUR, and so on. 
CalendarContract

The contract between the calendar provider and applications. 

CalendarContract.Attendees Fields and helpers for interacting with Attendees. 
CalendarContract.AttendeesColumns Columns from the Attendees table that other tables join into themselves. 
CalendarContract.CalendarAlerts Fields and helpers for accessing calendar alerts information. 
CalendarContract.CalendarAlertsColumns  
CalendarContract.CalendarCache CalendarCache stores some settings for calendar including the current time zone for the instances. 
CalendarContract.CalendarCacheColumns  
CalendarContract.CalendarColumns Columns specific to the Calendars Uri that other Uris can query. 
CalendarContract.CalendarEntity Class that represents a Calendar Entity. 
CalendarContract.Calendars Constants and helpers for the Calendars table, which contains details for individual calendars. 
CalendarContract.CalendarSyncColumns Generic columns for use by sync adapters. 
CalendarContract.Colors Fields for accessing colors available for a given account. 
CalendarContract.ColorsColumns  
CalendarContract.EventDays Fields and helpers for querying for a list of days that contain events. 
CalendarContract.EventDaysColumns  
CalendarContract.Events Constants and helpers for the Events table, which contains details for individual events. 
CalendarContract.EventsColumns Columns from the Events table that other tables join into themselves. 
CalendarContract.EventsEntity Class that represents an Event Entity. 
CalendarContract.ExtendedProperties Fields for accessing the Extended Properties. 
CalendarContract.ExtendedPropertiesColumns  
CalendarContract.Instances Fields and helpers for interacting with Instances. 
CalendarContract.Reminders Fields and helpers for accessing reminders for an event. 
CalendarContract.RemindersColumns  
CalendarContract.SyncColumns Columns for Sync information used by Calendars and Events tables. 
CalendarContract.SyncState A table provided for sync adapters to use for storing private sync state data. 
CalendarView This class is a calendar widget for displaying and selecting dates. 
CalendarView.OnDateChangeListener The callback used to indicate the user changes the date. 
Callable<V> A task that returns a result and may throw an exception. 
CallableStatement An interface used to call Stored Procedures
Callback Defines an empty base interface for all Callbacks used during authentication. 
CallbackHandler Needs to be implemented by classes that want to handle authentication Callbacks. 
CallLog The CallLog provider contains information about placed and received calls. 
CallLog.Calls Contains the recent calls. 
CamcorderProfile Retrieves the predefined camcorder profile settings for camcorder applications. 
Camera A camera instance can be used to compute 3D transformations and generate a matrix that can be applied, for instance, on a Canvas
Camera This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.Area This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.AutoFocusCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.AutoFocusMoveCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.CameraInfo This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.ErrorCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.Face This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.FaceDetectionListener This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.OnZoomChangeListener This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.Parameters This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.PictureCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.PreviewCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.ShutterCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
Camera.Size This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications.  
CameraAccessException

CameraAccessException is thrown if a camera device could not be queried or opened by the CameraManager, or if the connection to an opened CameraDevice is no longer valid. 

CameraCaptureSession A configured capture session for a CameraDevice, used for capturing images from the camera. 
CameraCaptureSession.CaptureCallback

A callback object for tracking the progress of a CaptureRequest submitted to the camera device. 

CameraCaptureSession.StateCallback A callback object for receiving updates about the state of a camera capture session. 
CameraCharacteristics

The properties describing a CameraDevice

CameraCharacteristics.Key<T> A Key is used to do camera characteristics field lookups with get(CameraCharacteristics.Key)
CameraDevice

The CameraDevice class is a representation of a single camera connected to an Android device, allowing for fine-grain control of image capture and post-processing at high frame rates. 

CameraDevice.StateCallback A callback objects for receiving updates about the state of a camera device. 
CameraManager

A system service manager for detecting, characterizing, and connecting to CameraDevices

CameraManager.AvailabilityCallback A callback for camera devices becoming available or unavailable to open. 
CameraMetadata<TKey> The base class for camera controls and information. 
CameraProfile The CameraProfile class is used to retrieve the pre-defined still image capture (jpeg) quality levels (0-100) used for low, medium, and high quality settings in the Camera application. 
CancellationException Exception indicating that the result of a value-producing task, such as a FutureTask, cannot be retrieved because the task was cancelled. 
CancellationSignal Provides the ability to cancel an operation in progress. 
CancellationSignal.OnCancelListener Listens for cancellation. 
CancelledKeyException A CancelledKeyException is thrown when an invalid selection key is used. 
Canvas The Canvas class holds the "draw" calls. 
Canvas.EdgeType  
Canvas.VertexMode  
CaptioningManager Contains methods for accessing and monitoring preferred video captioning state and visual properties. 
CaptioningManager.CaptioningChangeListener Listener for changes in captioning properties, including enabled state and user style preferences. 
CaptioningManager.CaptionStyle Specifies visual properties for video captions, including foreground and background colors, edge properties, and typeface. 
CaptureFailure A report of failed capture for a single image capture from the image sensor. 
CaptureRequest

An immutable package of settings and outputs needed to capture a single image from the camera device. 

CaptureRequest.Builder A builder for capture requests. 
CaptureRequest.Key<T> A Key is used to do capture request field lookups with get(CaptureResult.Key) or to set fields with set(Key, Object)
CaptureResult

The subset of the results of a single image capture from the image sensor. 

CaptureResult.Key<T> A Key is used to do capture result field lookups with get(CaptureResult.Key)
CardEmulation This class can be used to query the state of NFC card emulation services. 
CardView A FrameLayout with a rounded corner background and shadow. 
CDATASection CDATA sections are used to escape blocks of text containing characters that would otherwise be regarded as markup. 
CdmaCellLocation Represents the cell location on a CDMA phone. 
CellIdentityCdma CellIdentity is to represent a unique CDMA cell  
CellIdentityGsm CellIdentity to represent a unique GSM cell  
CellIdentityLte CellIdentity is to represent a unique LTE cell  
CellIdentityWcdma CellIdentity to represent a unique UMTS cell  
CellInfo Immutable cell information from a point in time. 
CellInfoCdma Immutable cell information from a point in time. 
CellInfoGsm Immutable cell information from a point in time. 
CellInfoLte Immutable cell information from a point in time. 
CellInfoWcdma Immutable cell information from a point in time. 
CellLocation Abstract class that represents the location of the device.  
CellSignalStrength Abstract base class for cell phone signal strength related information. 
CellSignalStrengthCdma Signal strength related information. 
CellSignalStrengthGsm GSM signal strength related information. 
CellSignalStrengthLte LTE signal strength related information. 
CellSignalStrengthWcdma Wcdma signal strength related information. 
Certificate This interface was deprecated in API level 1. Use Certificate instead. 
Certificate Abstract class to represent identity certificates. 
Certificate Abstract class to represent identity certificates. 
Certificate.CertificateRep The alternate Serializable class to be used for serialization and deserialization of Certificate objects. 
CertificateEncodingException The exception that is thrown when an error occurs while a Certificate is being encoded. 
CertificateEncodingException The exception that is thrown when an error occurs while a Certificate is being encoded. 
CertificateException The base class for all Certificate related exceptions. 
CertificateException The base class for all Certificate related exceptions. 
CertificateExpiredException The exception that is thrown when a Certificate has expired. 
CertificateExpiredException The exception that is thrown when a Certificate has expired. 
CertificateFactory This class implements the functionality of a certificate factory algorithm, relying on parsing a stream of bytes. 
CertificateFactorySpi This class defines the Service Provider Interface (SPI) for the CertificateFactory class. 
CertificateNotYetValidException The exception that is thrown when a Certificate is not yet valid or will not yet be valid on a specified date. 
CertificateNotYetValidException The exception that is thrown when a Certificate is not yet valid. 
CertificateParsingException The exception that is thrown when a Certificate can not be parsed. 
CertificateParsingException The exception that is thrown when a Certificate can not be parsed. 
CertPath An immutable certificate path that can be validated. 
CertPath.CertPathRep The alternate Serializable class to be used for serialization and deserialization on CertPath objects. 
CertPathBuilder This class implements the functionality of a builder for an unverified Certification Paths from a specified certificate to a trust anchor. 
CertPathBuilderException The exception that is thrown when a CertPathBuilder method fails. 
CertPathBuilderResult The interface for results generated by build(CertPathParameters)
CertPathBuilderSpi The Service Provider Interface (SPI) for the CertPathBuilder class to be implemented by security providers. 
CertPathParameters The interface specification for certification path algorithm parameters. 
CertPathTrustManagerParameters Certification path parameters to provide to certification path based TrustManager
CertPathValidator This class provides the functionality for validating certification paths (certificate chains) establishing a trust chain from a certificate to a trust anchor. 
CertPathValidatorException The exception that is thrown when a certification path (or certificate chain) cannot be validated. 
CertPathValidatorResult The interface specification for certification path validation results. 
CertPathValidatorSpi The Service Provider Interface (SPI) for the CertPathValidator class to be implemented by security providers. 
CertSelector The interface specification to determine whether a Certificate meets some criteria. 
CertStore This class provides the functionality to retrieve Certificates and CRLs from a read-only repository. 
CertStoreException The exception that is thrown when an access to a CertStore fails. 
CertStoreParameters The marker interface specifying the parameters used to initialize a CertStore instance. 
CertStoreSpi The Service Provider Interface (SPI) definition for the CertStore class to be implemented by security providers. 
ChangeBounds This transition captures the layout bounds of target views before and after the scene change and animates those changes during the transition. 
ChangeClipBounds ChangeClipBounds captures the getClipBounds() before and after the scene change and animates those changes during the transition. 
ChangeImageTransform This Transition captures an ImageView's matrix before and after the scene change and animates it during the transition. 
ChangeTransform This Transition captures scale and rotation for Views before and after the scene change and animates those changes during the transition. 
Channel A channel is a conduit to I/O services covering such items as files, sockets, hardware devices, I/O ports or some software component. 
Channels This class provides several utilities to get I/O streams from channels. 
Character The wrapper for the primitive type char
Character.Subset  
Character.UnicodeBlock Represents a block of Unicode characters. 
CharacterCodingException A CharacterCodingException is thrown when an encoding or decoding error occurs. 
CharacterData The CharacterData interface extends Node with a set of attributes and methods for accessing character data in the DOM. 
CharacterIterator An interface for the bidirectional iteration over a group of characters. 
CharacterPickerDialog Dialog for choosing accented characters related to a base character. 
CharacterStyle The classes that affect character-level text formatting extend this class. 
CharArrayBuffer This is used for copyStringToBuffer(int, CharArrayBuffer)  
CharArrayBuffer A resizable char array. 
CharArrayReader A specialized Reader for reading the contents of a char array. 
CharArrayWriter A specialized Writer for class for writing content to an (internal) char array. 
CharBuffer A buffer of chars. 
CharConversionException The top level class for character conversion exceptions. 
CharSequence This interface represents an ordered set of characters and defines the methods to probe them. 
Charset A charset is a named mapping between Unicode characters and byte sequences. 
CharsetDecoder A converter that can convert a byte sequence from a charset into a 16-bit Unicode character sequence. 
CharsetEncoder Transforms a sequence of 16-bit Java characters to a byte sequence in some encoding. 
CharsetProvider The service provider class for character sets. 
Checkable Defines an extension for views that make them checkable. 
CheckBox

A checkbox is a specific type of two-states button that can be either checked or unchecked. 

CheckBoxPreference A Preference that provides checkbox widget functionality. 
CheckedInputStream The CheckedInputStream class is used to maintain a checksum at the same time as the data, on which the checksum is computed, is read from a stream. 
CheckedOutputStream The CheckedOutputStream class is used to maintain a running checksum of all data written to a stream. 
CheckedTextView An extension to TextView that supports the Checkable interface. 
Checksum The interface common to checksum classes such as Adler32 and CRC32
ChoiceFormat Returns a fixed string based on a numeric value. 
Choreographer Coordinates the timing of animations, input and drawing. 
Choreographer.FrameCallback Implement this interface to receive a callback when a new display frame is being rendered. 
Chronometer Class that implements a simple timer. 
Chronometer.OnChronometerTickListener A callback that notifies when the chronometer has incremented on its own. 
ChunkedInputStream Implements chunked transfer coding. 
ChunkedOutputStream Implements chunked transfer coding. 
Cipher This class provides access to implementations of cryptographic ciphers for encryption and decryption. 
CipherInputStream This class wraps an InputStream and a cipher so that read() methods return data that are read from the underlying InputStream and processed by the cipher. 
CipherOutputStream This class wraps an output stream and a cipher so that write methods send the data through the cipher before writing them to the underlying output stream. 
CipherSpi This class defines the Service Provider Interface (SPI) for cryptographic ciphers. 
CircularArray<E> A circular array implementation that provides O(1) random read and O(1) prepend and O(1) append. 
CircularPropagation A propagation that varies with the distance to the epicenter of the Transition or center of the scene if no epicenter exists. 
CircularRedirectException Signals a circular redirect 
Class<T> The in-memory representation of a Java class. 
ClassCastException Thrown when a program attempts to cast a an object to a type with which it is not compatible. 
ClassCircularityError Thrown when the VM notices that an attempt is made to load a class which would directly or indirectly inherit from one of its subclasses. 
ClassFormatError Thrown by a class loader when a class file has an illegal format or if the data that it contains can not be interpreted as a class. 
ClassLoader Loads classes and resources from a repository. 
ClassNotFoundException Thrown when a class loader is unable to find a class. 
ClassPresenterSelector A ClassPresenterSelector selects a Presenter based on the item's Java class. 
ClickableSpan If an object of this type is attached to the text of a TextView with a movement method of LinkMovementMethod, the affected spans of text can be selected. 
ClientCertRequest ClientCertRequest: The user receives an instance of this class as a parameter of onReceivedClientCertRequest(WebView, ClientCertRequest)
ClientConnectionManager Management interface for client connections
ClientConnectionManagerFactory A factory for creating new ClientConnectionManager instances. 
ClientConnectionOperator Interface for opening connections
ClientConnectionRequest Encapsulates a request for a ManagedClientConnection
ClientContext Context attribute names for client. 
ClientContextConfigurer  
ClientCookie ClientCookie extends the standard Cookie interface with additional client specific functionality such ability to retrieve original cookie attributes exactly as they were specified by the origin server. 
ClientInfoStatus An enumeration to describe the reason why a property cannot be set by calling Connection.setClientInfo. 
ClientParamBean  
ClientParamsStack Represents a stack of parameter collections. 
ClientPNames Parameter names for the HttpClient module. 
ClientProtocolException Signals an error in the HTTP protocol. 
ClipboardManager Interface to the clipboard service, for placing and retrieving text in the global clipboard. 
ClipboardManager This class was deprecated in API level 11. Old text-only interface to the clipboard. See ClipboardManager for the modern API.  
ClipboardManager.OnPrimaryClipChangedListener Defines a listener callback that is invoked when the primary clip on the clipboard changes. 
ClipData Representation of a clipped data on the clipboard. 
ClipData.Item Description of a single item in a ClippedData. 
ClipDescription Meta-data describing the contents of a ClipData
ClipDrawable A Drawable that clips another Drawable based on this Drawable's current level value. 
Clob A Java interface mapping for the SQL CLOB type. 
Cloneable This (empty) interface must be implemented by all classes that wish to support cloning. 
CloneNotSupportedException Thrown when a program attempts to clone an object which does not support the Cloneable interface. 
CloneUtils A collection of utilities to workaround limitations of Java clone framework. 
Closeable An AutoCloseable whose close method may throw an IOException
ClosedByInterruptException A ClosedByInterruptException is thrown when a thread is interrupted in a blocking I/O operation. 
ClosedChannelException A ClosedChannelException is thrown when a channel is closed for the type of operation attempted. 
ClosedSelectorException A ClosedSelectorException is thrown when a selector is closed and an I/O operation is attempted. 
CoderMalfunctionError A CoderMalfunctionError is thrown when the encoder/decoder is malfunctioning. 
CoderResult Used to indicate the result of encoding/decoding. 
CodeSigner CodeSigner represents a signer of code. 
CodeSource Legacy security code; do not use. 
CodingErrorAction Used to indicate what kind of actions to take in case of encoding/decoding errors. 
CollapsibleActionView When a View implements this interface it will receive callbacks when expanded or collapsed as an action view alongside the optional, app-specified callbacks to MenuItemCompat.OnActionExpandListener
CollapsibleActionView When a View implements this interface it will receive callbacks when expanded or collapsed as an action view alongside the optional, app-specified callbacks to MenuItem.OnActionExpandListener
CollationElementIterator Created by a RuleBasedCollator to iterate through a string. 
CollationKey Represents a string under the rules of a specific Collator object. 
Collator Performs locale-sensitive string comparison. 
Collection<E> Collection is the root of the collection hierarchy. 
CollectionCertStoreParameters The parameters to initialize a Collection type CertStore instance. 
Collections Collections contains static methods which operate on Collection classes. 
Color The Color class defines methods for creating and converting color ints. 
ColorDrawable A specialized Drawable that fills the Canvas with a specified color. 
ColorFilter A color filter can be used with a Paint to modify the color of each pixel drawn with that paint. 
ColorFilterCache Cache of ColorFilters for a given color at different alpha levels. 
ColorFilterDimmer Helper class for applying a dim level to a View. 
ColorMatrix 4x5 matrix for transforming the color+alpha components of a Bitmap. 
ColorMatrixColorFilter A color filter that transforms colors through a 4x5 color matrix. 
ColorOverlayDimmer Helper class for assigning a dim color to Paint. 
ColorRes Denotes that an integer parameter, field or method return value is expected to be a color resource reference (e.g. 
ColorSpaceTransform Immutable class for describing a 3x3 matrix of Rational values in row-major order. 
ColorStateList Lets you map View state sets to colors. 
Comment This interface inherits from CharacterData and represents the content of a comment, i.e., all the characters between the starting ' <!--' and ending '-->'. 
CommonDataSource Interface that defines the methods which are common between DataSource, XADataSource and ConnectionPoolDataSource. 
Comparable<T> This interface should be implemented by all classes that wish to define a natural order of their instances. 
Comparator<T> A Comparator is used to compare two objects to determine their ordering with respect to each other. 
ComparisonFailure This class was deprecated in API level 16. use junit.framework.ComparisonFailure  
ComparisonFailure Thrown when an assert equals for Strings failed. 
Compiler Does nothing on Android. 
CompletionInfo Information about a single text completion that an editor has reported to an input method. 
CompletionService<V> A service that decouples the production of new asynchronous tasks from the consumption of the results of completed tasks. 
ComponentCallbacks The set of callback APIs that are common to all application components (Activity, Service, ContentProvider, and Application). 
ComponentCallbacks2 Extended ComponentCallbacks interface with a new callback for finer-grained memory management. 
ComponentInfo Base class containing information common to all application components (ActivityInfo, ServiceInfo). 
ComponentName Identifier for a specific application component (Activity, Service, BroadcastReceiver, or ContentProvider) that is available. 
ComposePathEffect  
ComposeShader A subclass of shader that returns the composition of two other shaders, combined by an Xfermode subclass. 
CompoundButton

A button with two states, checked and unchecked. 

CompoundButton.OnCheckedChangeListener Interface definition for a callback to be invoked when the checked state of a compound button changed. 
ConcurrentHashMap<K, V> A hash table supporting full concurrency of retrievals and high expected concurrency for updates. 
ConcurrentLinkedDeque<E> An unbounded concurrent deque based on linked nodes. 
ConcurrentLinkedQueue<E> An unbounded thread-safe queue based on linked nodes. 
ConcurrentMap<K, V> A Map providing additional atomic putIfAbsent, remove, and replace methods. 
ConcurrentModificationException An ConcurrentModificationException is thrown when a Collection is modified and an existing iterator on the Collection is used to modify the Collection as well. 
ConcurrentNavigableMap<K, V> A ConcurrentMap supporting NavigableMap operations, and recursively so for its navigable sub-maps. 
ConcurrentSkipListMap<K, V> A scalable concurrent ConcurrentNavigableMap implementation. 
ConcurrentSkipListSet<E> A scalable concurrent NavigableSet implementation based on a ConcurrentSkipListMap
Condition Condition factors out the Object monitor methods (wait, notify and notifyAll) into distinct objects to give the effect of having multiple wait-sets per object, by combining them with the use of arbitrary Lock implementations. 
ConditionVariable Class that implements the condition variable locking paradigm. 
Config This class was deprecated in API level 14. This class is not useful, it just returns the same value for all constants, and has always done this. Do not use it.  
Configuration This class describes all device configuration information that can impact the resources the application retrieves. 
ConfigurationInfo Information you can retrieve about hardware configuration preferences declared by an application. 
ConfigurationStats Represents the usage statistics of a device Configuration for a specific time range. 
ConnConnectionParamBean Allows for setting parameters relating to connections on HttpParams
ConnConnectionPNames Parameter names for connections in HttpConn. 
ConnectException A ConnectException is thrown if a connection cannot be established to a remote host on a specific port. 
Connection A connection represents a link from a Java application to a database. 
ConnectionClosedException Indicates that a connection has been closed. 
ConnectionEvent Sent when specific events happen on a PooledConnection object. 
ConnectionEventListener An interface used to receive events generated by a PooledConnection
ConnectionKeepAliveStrategy Interface for deciding how long a connection can remain idle before being reused. 
ConnectionPendingException A ConnectionPendingException is thrown when an attempt is made to connect a SocketChannel that has a non-blocking connection already underway. 
ConnectionPoolDataSource An interface for the creation of ConnectionPoolDataSource objects. 
ConnectionPoolTimeoutException A timeout while waiting for an available connection from a connection manager. 
ConnectionReleaseTrigger Interface for releasing a connection. 
ConnectionReuseStrategy Interface for deciding whether a connection should be kept alive. 
ConnectivityManager Class that answers queries about the state of network connectivity. 
ConnectivityManager.NetworkCallback Base class for NetworkRequest callbacks. 
ConnectivityManager.OnNetworkActiveListener Callback for use with addDefaultNetworkActiveListener(ConnectivityManager.OnNetworkActiveListener) to find out when the system default network has gone in to a high power state. 
ConnectivityManagerCompat Helper for accessing features in ConnectivityManager introduced after API level 16 in a backwards compatible fashion. 
ConnectTimeoutException A timeout while connecting to an HTTP server or waiting for an available connection from an HttpConnectionManager. 
ConnManagerParamBean Allows for setting parameters relating to connection managers on HttpParams
ConnManagerParams This class represents a collection of HTTP protocol parameters applicable to client-side connection managers
ConnManagerPNames Parameter names for connection managers in HttpConn. 
ConnPerRoute This interface is intended for looking up maximum number of connections allowed for for a given route. 
ConnPerRouteBean This class maintains a map of HTTP routes to maximum number of connections allowed for those routes. 
ConnPoolByRoute A connection pool that maintains connections by route. 
ConnRouteParamBean Allows for setting parameters relating to connection routes on HttpParams
ConnRouteParams An adaptor for accessing route related parameters in HttpParams
ConnRoutePNames Parameter names for routing in HttpConn. 
Console Provides access to the console, if available. 
ConsoleHandler A handler that writes log messages to the standard output stream System.err
ConsoleMessage Public class representing a JavaScript console message from WebCore. 
ConsoleMessage.MessageLevel  
Constructor<T> This class represents a constructor. 
ConsumerIrManager Class that operates consumer infrared on the device. 
ConsumerIrManager.CarrierFrequencyRange Represents a range of carrier frequencies (inclusive) on which the infrared transmitter can transmit  
Contacts This class was deprecated in API level 5. The APIs have been superseded by ContactsContract. The newer APIs allow access multiple accounts and support aggregation of similar contacts. These APIs continue to work but will only return data for the first Google account created, which matches the original behavior.  
Contacts.ContactMethods This class was deprecated in API level 5. see ContactsContract  
Contacts.ContactMethodsColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.Extensions This class was deprecated in API level 5. see ContactsContract  
Contacts.ExtensionsColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.GroupMembership This class was deprecated in API level 5. see ContactsContract  
Contacts.Groups This class was deprecated in API level 5. see ContactsContract  
Contacts.GroupsColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.Intents This class was deprecated in API level 5. see ContactsContract  
Contacts.Intents.Insert This class was deprecated in API level 5. see ContactsContract  
Contacts.Intents.UI This class was deprecated in API level 5. see ContactsContract  
Contacts.OrganizationColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.Organizations This class was deprecated in API level 5. see ContactsContract  
Contacts.People This class was deprecated in API level 5. see ContactsContract  
Contacts.People.ContactMethods This class was deprecated in API level 5. see ContactsContract  
Contacts.People.Extensions This class was deprecated in API level 5. see ContactsContract  
Contacts.People.Phones This class was deprecated in API level 5. see ContactsContract  
Contacts.PeopleColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.Phones This class was deprecated in API level 5. see ContactsContract  
Contacts.PhonesColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.Photos This class was deprecated in API level 5. see ContactsContract  
Contacts.PhotosColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.PresenceColumns This interface was deprecated in API level 5. see ContactsContract  
Contacts.Settings This class was deprecated in API level 5. see ContactsContract  
Contacts.SettingsColumns This interface was deprecated in API level 5. see ContactsContract  
ContactsContract

The contract between the contacts provider and applications. 

ContactsContract.AggregationExceptions

Constants for the contact aggregation exceptions table, which contains aggregation rules overriding those used by automatic aggregation. 

ContactsContract.BaseSyncColumns Generic columns for use by sync adapters. 
ContactsContract.CommonDataKinds Container for definitions of common data types stored in the ContactsContract.Data table. 
ContactsContract.CommonDataKinds.BaseTypes The base types that all "Typed" data kinds support. 
ContactsContract.CommonDataKinds.Callable

Convenient functionalities for "callable" data. 

ContactsContract.CommonDataKinds.CommonColumns Columns common across the specific types. 
ContactsContract.CommonDataKinds.Contactables A special class of data items, used to refer to types of data that can be used to attempt to start communicating with a person (ContactsContract.CommonDataKinds.Phone and ContactsContract.CommonDataKinds.Email). 
ContactsContract.CommonDataKinds.Email

A data kind representing an email address. 

ContactsContract.CommonDataKinds.Event

A data kind representing an event. 

ContactsContract.CommonDataKinds.GroupMembership

Group Membership. 

ContactsContract.CommonDataKinds.Identity A data kind representing an Identity related to the contact. 
ContactsContract.CommonDataKinds.Im

A data kind representing an IM address

You can use all columns defined for ContactsContract.Data as well as the following aliases. 

ContactsContract.CommonDataKinds.Nickname

A data kind representing the contact's nickname. 

ContactsContract.CommonDataKinds.Note

Notes about the contact. 

ContactsContract.CommonDataKinds.Organization

A data kind representing an organization. 

ContactsContract.CommonDataKinds.Phone

A data kind representing a telephone number. 

ContactsContract.CommonDataKinds.Photo

A data kind representing a photo for the contact. 

ContactsContract.CommonDataKinds.Relation

A data kind representing a relation. 

ContactsContract.CommonDataKinds.SipAddress

A data kind representing a SIP address for the contact. 

ContactsContract.CommonDataKinds.StructuredName A data kind representing the contact's proper name. 
ContactsContract.CommonDataKinds.StructuredPostal

A data kind representing a postal addresses. 

ContactsContract.CommonDataKinds.Website

A data kind representing a website related to the contact. 

ContactsContract.ContactNameColumns Contact name and contact name metadata columns in the RawContacts table. 
ContactsContract.ContactOptionsColumns Columns of ContactsContract.Contacts that track the user's preferences for, or interactions with, the contact. 
ContactsContract.Contacts Constants for the contacts table, which contains a record per aggregate of raw contacts representing the same person. 
ContactsContract.Contacts.AggregationSuggestions

A read-only sub-directory of a single contact aggregate that contains all aggregation suggestions (other contacts). 

ContactsContract.Contacts.Data A sub-directory of a single contact that contains all of the constituent raw contact ContactsContract.Data rows. 
ContactsContract.Contacts.Entity

A sub-directory of a contact that contains all of its ContactsContract.RawContacts as well as ContactsContract.Data rows. 

ContactsContract.Contacts.Photo A read-only sub-directory of a single contact that contains the contact's primary photo. 
ContactsContract.Contacts.StreamItems This class was deprecated in API level 21. - Do not use. This will not be supported in the future. In the future, cursors returned from related queries will be empty.  
ContactsContract.ContactsColumns Columns of ContactsContract.Contacts that refer to intrinsic properties of the contact, as opposed to the user-specified options found in ContactsContract.ContactOptionsColumns
ContactsContract.ContactStatusColumns  
ContactsContract.Data

Constants for the data table, which contains data points tied to a raw contact. 

ContactsContract.DataColumns Columns in the Data table. 
ContactsContract.DataColumnsWithJoins Combines all columns returned by ContactsContract.Data table queries. 
ContactsContract.DataUsageFeedback

API allowing applications to send usage information for each ContactsContract.Contacts.Data row to the Contacts Provider. 

ContactsContract.DataUsageStatColumns Columns in the Data_Usage_Stat table  
ContactsContract.DeletedContacts Constants for the deleted contact table. 
ContactsContract.DeletedContactsColumns  
ContactsContract.Directory A Directory represents a contacts corpus, e.g. 
ContactsContract.DisplayNameSources Types of data used to produce the display name for a contact. 
ContactsContract.DisplayPhoto Helper class for accessing full-size photos by photo file ID. 
ContactsContract.FullNameStyle Constants for various styles of combining given name, family name etc into a full name. 
ContactsContract.Groups Constants for the groups table. 
ContactsContract.GroupsColumns  
ContactsContract.Intents Contains helper classes used to create or manage Intents that involve contacts. 
ContactsContract.Intents.Insert Convenience class that contains string constants used to create contact Intents
ContactsContract.PhoneLookup A table that represents the result of looking up a phone number, for example for caller ID. 
ContactsContract.PhoneLookupColumns  
ContactsContract.PhoneticNameStyle Constants for various styles of capturing the pronunciation of a person's name. 
ContactsContract.PinnedPositions

Contact-specific information about whether or not a contact has been pinned by the user at a particular position within the system contact application's user interface. 

ContactsContract.Presence This class was deprecated in API level 5. This old name was never meant to be made public. Do not use.  
ContactsContract.PresenceColumns Additional data mixed in with ContactsContract.StatusColumns to link back to specific _ID entries. 
ContactsContract.Profile

Constants for the user's profile data, which is represented as a single contact on the device that represents the user. 

ContactsContract.ProfileSyncState A table provided for sync adapters to use for storing private sync state data for the user's personal profile. 
ContactsContract.QuickContact Helper methods to display QuickContact dialogs that display all the information belonging to a specific Contacts entry. 
ContactsContract.RawContacts Constants for the raw contacts table, which contains one row of contact information for each person in each synced account. 
ContactsContract.RawContacts.Data A sub-directory of a single raw contact that contains all of its ContactsContract.Data rows. 
ContactsContract.RawContacts.DisplayPhoto

A sub-directory of a single raw contact that represents its primary display photo. 

ContactsContract.RawContacts.Entity

A sub-directory of a single raw contact that contains all of its ContactsContract.Data rows. 

ContactsContract.RawContacts.StreamItems This class was deprecated in API level 21. - Do not use. This will not be supported in the future. In the future, cursors returned from related queries will be empty.  
ContactsContract.RawContactsColumns  
ContactsContract.RawContactsEntity

Constants for the raw contacts entities table, which can be thought of as an outer join of the raw_contacts table with the data table. 

ContactsContract.SearchSnippets Additional column returned by Contacts.CONTENT_FILTER_URI explaining why the filter matched the contact. 
ContactsContract.Settings

Contacts-specific settings for various Account's. 

ContactsContract.SettingsColumns  
ContactsContract.StatusColumns Social status update columns. 
ContactsContract.StatusUpdates

A status update is linked to a ContactsContract.Data row and captures the user's latest status update via the corresponding source, e.g. 

ContactsContract.StreamItemPhotos This class was deprecated in API level 21. - Do not use. This will not be supported in the future. In the future, cursors returned from related queries will be empty.  
ContactsContract.StreamItemPhotosColumns This interface was deprecated in API level 21. - Do not use. This will not be supported in the future. In the future, cursors returned from related queries will be empty.  
ContactsContract.StreamItems This class was deprecated in API level 21. - Do not use. This will not be supported in the future. In the future, cursors returned from related queries will be empty.  
ContactsContract.StreamItems.StreamItemPhotos This class was deprecated in API level 21. - Do not use. This will not be supported in the future. In the future, cursors returned from related queries will be empty.  
ContactsContract.StreamItemsColumns This interface was deprecated in API level 21. - Do not use. This will not be supported in the future. In the future, cursors returned from related queries will be empty.  
ContactsContract.SyncColumns Columns that appear when each row of a table belongs to a specific account, including sync information that an account may need. 
ContactsContract.SyncState A table provided for sync adapters to use for storing private sync state data for contacts. 
ContentHandler This class converts the content of a certain format (i.e. 
ContentHandler Receive notification of the logical content of a document. 
ContentHandlerFactory Defines a factory which is responsible for creating a ContentHandler
ContentLengthInputStream Stream that cuts off after a specified number of bytes. 
ContentLengthOutputStream A stream wrapper that closes itself after a defined number of bytes. 
ContentLengthStrategy Represents a strategy to determine the content length based on the properties of an HTTP message. 
ContentLoadingProgressBar ContentLoadingProgressBar implements a ProgressBar that waits a minimum time to be dismissed before showing. 
ContentObservable A specialization of Observable for ContentObserver that provides methods for sending notifications to a list of ContentObserver objects. 
ContentObserver Receives call backs for changes to content. 
ContentProducer An abstract entity content producer. 
ContentProvider Content providers are one of the primary building blocks of Android applications, providing content to applications. 
ContentProvider.PipeDataWriter<T> Interface to write a stream of data to a pipe. 
ContentProviderClient The public interface object used to interact with a ContentProvider
ContentProviderOperation  
ContentProviderOperation.Builder Used to add parameters to a ContentProviderOperation
ContentProviderResult Contains the result of the application of a ContentProviderOperation
ContentQueryMap Caches the contents of a cursor into a Map of String->ContentValues and optionally keeps the cache fresh by registering for updates on the content backing the cursor. 
ContentResolver This class provides applications access to the content model. 
ContentUris Utility methods useful for working with Uri objects that use the "content" (content://) scheme. 
ContentValues This class is used to store a set of values that the ContentResolver can process. 
Context Interface to global information about an application environment. 
ContextCompat Helper for accessing features in Context introduced after API level 4 in a backwards compatible fashion. 
ContextMenu Extension of Menu for context menus providing functionality to modify the header of the context menu. 
ContextMenu.ContextMenuInfo Additional information regarding the creation of the context menu. 
ContextThemeWrapper A ContextWrapper that allows you to modify the theme from what is in the wrapped context. 
ContextWrapper Proxying implementation of Context that simply delegates all of its calls to another Context. 
ControlButtonPresenterSelector ControlButtonPresenterSelector displays primary and secondary controls for a PlaybackControlsRow
Cookie HTTP "magic-cookie" represents a piece of state information that the HTTP agent and the target server can exchange to maintain a session. 
CookieAttributeHandler Ths interface represents a cookie attribute handler responsible for parsing, validating, and matching a specific cookie attribute, such as path, domain, port, etc. 
CookieHandler This class provides a way to manage cookies with a HTTP protocol handler. 
CookieIdentityComparator This cookie comparator can be used to compare identity of cookies. 
CookieManager Manages the cookies used by an application's WebView instances. 
CookieManager This class provides a concrete implementation of CookieHandler. 
CookieOrigin CookieOrigin class incapsulates details of an origin server that are relevant when parsing, validating or matching HTTP cookies. 
CookiePathComparator This cookie comparator ensures that multiple cookies satisfying a common criteria are ordered in the Cookie header such that those with more specific Path attributes precede those with less specific. 
CookiePolicy CookiePolicy has three pre-defined policy. 
CookiePolicy  
CookieSpec Defines the cookie management specification. 
CookieSpecBase Cookie management functions shared by all specification. 
CookieSpecFactory  
CookieSpecParamBean  
CookieSpecPNames Parameter names for cookie specifications in HttpCookie. 
CookieSpecRegistry Cookie specification registry that can be used to obtain the corresponding cookie specification implementation for a given type of type or version of cookie. 
CookieStore A CookieStore object is a repository for cookies. 
CookieStore Abstract cookie store. 
CookieSyncManager This class was deprecated in API level 21. The WebView now automatically syncs cookies as necessary. You no longer need to create or use the CookieSyncManager. To manually force a sync you can use the CookieManager method flush() which is a synchronous replacement for sync().  
CopyOnWriteArrayList<E> A thread-safe random-access list. 
CopyOnWriteArraySet<E> A Set that uses an internal CopyOnWriteArrayList for all of its operations. 
CoreConnectionPNames Defines parameter names for connections in HttpCore. 
CoreProtocolPNames Defines parameter names for protocol execution in HttpCore. 
CornerPathEffect  
CorrectionInfo Information about a single text correction that an editor has reported to an input method. 
CountDownLatch A synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes. 
CountDownTimer Schedule a countdown until a time in the future, with regular notifications on intervals along the way. 
CRC32 The CRC32 class is used to compute a CRC32 checksum from data provided as input value. 
Credentials A class for representing UNIX credentials passed via ancillary data on UNIX domain sockets. 
Credentials User name and password based authentication credentials. 
CredentialsProvider Abstract credentials provider. 
Criteria A class indicating the application criteria for selecting a location provider. 
CRL This class represents Certificate Revocation Lists (CRLs) maintained by a certificate authority. 
CRLException The exception that is thrown if errors occur during handling of CRLs. 
CRLSelector The interface specification for determining whether a CRL meets some criteria to select CRL objects among a set of CRLs. 
CrossProcessCursor A cross process cursor is an extension of a Cursor that also supports usage from remote processes. 
CrossProcessCursorWrapper Cursor wrapper that implements CrossProcessCursor
Currency A currency corresponding to an ISO 4217 currency code such as "EUR" or "USD". 
Cursor This interface provides random read-write access to the result set returned by a database query. 
CursorAdapter Static library support version of the framework's CursorAdapter
CursorAdapter Adapter that exposes data from a Cursor to a ListView widget. 
CursorAnchorInfo Positional information about the text insertion point and characters in the composition string. 
CursorAnchorInfo.Builder Builder for CursorAnchorInfo
CursorIndexOutOfBoundsException An exception indicating that a cursor is out of bounds. 
CursorJoiner Does a join on two cursors using the specified columns. 
CursorJoiner.Result The result of a call to next(). 
CursorLoader A loader that queries the ContentResolver and returns a Cursor
CursorLoader Static library support version of the framework's CursorLoader
CursorMapper Abstract class used to convert the current Cursor row to a single object. 
CursorObjectAdapter An ObjectAdapter implemented with a Cursor
CursorTreeAdapter An adapter that exposes data from a series of Cursors to an ExpandableListView widget. 
CursorWindow A buffer containing multiple cursor rows. 
CursorWrapper Wrapper class for Cursor that delegates all calls to the actual cursor object. 
CycleInterpolator Repeats the animation for a specified number of cycles. 
CyclicBarrier A synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. 

D

DashPathEffect  
DatabaseErrorHandler An interface to let the apps define the actions to take when the following errors are detected database corruption  
DatabaseMetaData An interface which provides comprehensive information about the database management system and its supported features. 
DatabaseUtils Static utility methods for dealing with databases and Cursors. 
DatabaseUtils.InsertHelper This class was deprecated in API level 17. Use SQLiteStatement instead.  
DatabaseUtilsCompat Helper for accessing features in DatabaseUtils introduced after API level 4 in a backwards compatible fashion. 
DataFormatException DataFormatException is used to indicate an error in the format of a particular data stream which is to be uncompressed. 
DatagramChannel A DatagramChannel is a selectable channel that represents a partial abstraction of a datagram socket. 
DatagramPacket This class represents a datagram packet which contains data either to be sent or received through a DatagramSocket
DatagramSocket This class implements a UDP socket for sending and receiving DatagramPacket
DatagramSocketImpl The abstract superclass for datagram and multicast socket implementations. 
DatagramSocketImplFactory This interface defines a factory for datagram socket implementations. 
DataInput Defines an interface for classes that are able to read big-endian typed data from some source. 
DataInputStream Wraps an existing InputStream and reads big-endian typed data from it. 
DataOutput Defines an interface for classes that are able to write big-endian typed data to some target. 
DataOutputStream Wraps an existing OutputStream and writes big-endian typed data to it. 
DataSetObservable A specialization of Observable for DataSetObserver that provides methods for sending notifications to a list of DataSetObserver objects. 
DataSetObserver Receives call backs when a data set has been changed, or made invalid. 
DataSource An interface for the creation of Connection objects which represent a connection to a database. 
DataTruncation An exception which is thrown when a JDBC driver unexpectedly truncates a data value either when reading (resulting in warning), or when writing data (resulting in an error). 
DatatypeConfigurationException

Indicates a serious configuration error. 

DatatypeConstants

Utility class to contain basic Datatype values as constants. 

DatatypeConstants.Field Type-safe enum class that represents six fields of the Duration class. 
DatatypeFactory

Factory that creates new javax.xml.datatype Objects that map XML to/from Java Objects. 

Date A class which can consume and produce dates in SQL Date format. 
Date A specific moment in time, with millisecond precision. 
DateFormat Utility class for producing strings with formatted date/time. 
DateFormat Formats or parses dates and times. 
DateFormat.Field The instances of this inner class are used as attribute keys and values in AttributedCharacterIterator that the formatToCharacterIterator(Object) method returns. 
DateFormatSymbols Encapsulates localized date-time formatting data, such as the names of the months, the names of the days of the week, and the time zone data. 
DateKeyListener For entering dates in a text field. 
DateParseException An exception to indicate an error parsing a date string. 
DatePicker This class is a widget for selecting a date. 
DatePicker.OnDateChangedListener The callback used to indicate the user changes\d the date. 
DatePickerDialog A simple dialog containing an DatePicker
DatePickerDialog.OnDateSetListener The callback used to indicate the user is done filling in the date. 
DateSorter Sorts dates into the following groups: Today Yesterday seven days ago one month ago older than a month ago  
DateTimeKeyListener For entering dates and times in the same text field. 
DateUtils This class contains various date-related utilities for creating text for things like elapsed time and date ranges, strings for days of the week and months, and AM/PM text etc. 
DateUtils A utility class for parsing and formatting HTTP dates as used in cookies and other headers. 
DeadObjectException The object you are calling has died, because its hosting process no longer exists. 
Debug Provides various debugging methods for Android applications, including tracing and allocation counts. 
Debug.InstructionCount API for gathering and querying instruction counts. 
Debug.MemoryInfo This class is used to retrieved various statistics about the memory mappings for this process. 
DebugUtils

Various utilities for debugging and logging. 

DecelerateInterpolator An interpolator where the rate of change starts out quickly and and then decelerates. 
DecimalFormat A concrete subclass of NumberFormat that formats decimal numbers. 
DecimalFormatSymbols Encapsulates the set of symbols (such as the decimal separator, the grouping separator, and so on) needed by DecimalFormat to format numbers. 
DeclHandler SAX2 extension handler for DTD declaration events. 
DefaultClientConnection Default implementation of an operated client connection. 
DefaultClientConnectionOperator Default implementation of a ClientConnectionOperator
DefaultConnectionKeepAliveStrategy Default implementation of a strategy deciding duration that a connection can remain idle. 
DefaultConnectionReuseStrategy Default implementation of a strategy deciding about connection re-use. 
DefaultDatabaseErrorHandler Default class used to define the actions to take when the database corruption is reported by sqlite. 
DefaultedHttpContext HttpContext implementation that delegates resolution of an attribute to the given default HttpContext instance if the attribute is not present in the local one. 
DefaultedHttpParams HttpParams implementation that delegates resolution of a parameter to the given default HttpParams instance if the parameter is not present in the local one. 
DefaultHandler Default base class for SAX2 event handlers. 
DefaultHandler2 This class extends the SAX2 base handler class to support the SAX2 LexicalHandler, DeclHandler, and EntityResolver2 extensions. 
DefaultHttpClient Default implementation of an HTTP client. 
DefaultHttpClientConnection Default implementation of a client-side HTTP connection. 
DefaultHttpRequestFactory Default implementation of a factory for creating request objects. 
DefaultHttpRequestRetryHandler The default HttpRequestRetryHandler used by request executors. 
DefaultHttpResponseFactory Default implementation of a factory for creating response objects. 
DefaultHttpRoutePlanner Default implementation of an HttpRoutePlanner
DefaultHttpServerConnection Default implementation of a server-side HTTP connection. 
DefaultItemAnimator This implementation of RecyclerView.ItemAnimator provides basic animations on remove, add, and move events that happen to the items in a RecyclerView. 
DefaultItemAnimatorTest  
DefaultProxyAuthenticationHandler  
DefaultRedirectHandler Default implementation of RedirectHandler
DefaultRequestDirector Default implementation of RequestDirector
DefaultResponseParser  
DefaultTargetAuthenticationHandler  
DefaultUserTokenHandler  
Deflater This class compresses data using the DEFLATE algorithm (see specification). 
DeflaterInputStream An InputStream filter to compress data. 
DeflaterOutputStream This class provides an implementation of FilterOutputStream that compresses data using the DEFLATE algorithm. 
Delayed A mix-in style interface for marking objects that should be acted upon after a given delay. 
DelayQueue<E extends Delayed> An unbounded blocking queue of Delayed elements, in which an element can only be taken when its delay has expired. 
DeniedByServerException Exception thrown when the provisioning server or key server denies a certficate or license for a device. 
Deprecated Annotation type used to mark program elements that should no longer be used by programmers. 
Deque<E> A linear collection that supports element insertion and removal at both ends. 
DESedeKeySpec The key specification for a triple-DES (DES-EDE) key. 
DESKeySpec The key specification for a DES key. 
Destroyable Allows for special treatment of sensitive information, when it comes to destroying or clearing of the data. 
DestroyFailedException Signals that the destroy() method failed. 
DetailsFragment Wrapper fragment for leanback details screens. 
DetailsOverviewRow An overview row for a details fragment. 
DetailsOverviewRowPresenter A DetailsOverviewRowPresenter renders a DetailsOverviewRow to display an overview of an item. 
DetailsOverviewRowPresenter.ViewHolder A ViewHolder for the DetailsOverviewRow. 
DetailsSupportFragment Wrapper fragment for leanback details screens. 
DeviceAdminInfo This class is used to specify meta information of a device administrator component. 
DeviceAdminReceiver Base class for implementing a device administration component. 
DevicePolicyManager Public interface for managing policies enforced on a device. 
DexClassLoader A class loader that loads classes from .jar and .apk files containing a classes.dex entry. 
DexFile Manipulates DEX files. 
DhcpInfo A simple object for retrieving the results of a DHCP request. 
DHGenParameterSpec The algorithm parameter specification for generating Diffie-Hellman parameters used in Diffie-Hellman key agreement. 
DHKey The interface for a Diffie-Hellman key. 
DHParameterSpec The algorithm parameter specification for the Diffie-Hellman algorithm. 
DHPrivateKey The interface for a private key in the Diffie-Hellman key exchange protocol. 
DHPrivateKeySpec The key specification for a Diffie-Hellman private key. 
DHPublicKey The interface for a public key in the Diffie-Hellman key exchange protocol. 
DHPublicKeySpec The key specification for a Diffie-Hellman public key. 
DialerFilter  
DialerKeyListener For dialing-only text entry

As for all implementations of KeyListener, this class is only concerned with hardware keyboards. 
Dialog Base class for Dialogs. 
DialogFragment A fragment that displays a dialog window, floating on top of its activity's window. 
DialogFragment Static library support version of the framework's DialogFragment
DialogInterface  
DialogInterface.OnCancelListener Interface used to allow the creator of a dialog to run some code when the dialog is canceled. 
DialogInterface.OnClickListener Interface used to allow the creator of a dialog to run some code when an item on the dialog is clicked.. 
DialogInterface.OnDismissListener Interface used to allow the creator of a dialog to run some code when the dialog is dismissed. 
DialogInterface.OnKeyListener Interface definition for a callback to be invoked when a key event is dispatched to this dialog. 
DialogInterface.OnMultiChoiceClickListener Interface used to allow the creator of a dialog to run some code when an item in a multi-choice dialog is clicked. 
DialogInterface.OnShowListener Interface used to allow the creator of a dialog to run some code when the dialog is shown. 
DialogPreference A base class for Preference objects that are dialog-based. 
Dictionary<K, V> Note: Do not use this class since it is obsolete. 
DigestException DigestException is a general message digest exception. 
DigestInputStream DigestInputStream is a FilterInputStream which maintains an associated message digest. 
DigestOutputStream DigestOutputStream is a FilterOutputStream which maintains an associated message digest. 
DigestScheme

Digest authentication scheme as defined in RFC 2617. 

DigestSchemeFactory  
DigitalClock This class was deprecated in API level 17. It is recommended you use TextClock instead.  
DigitsKeyListener For digits-only text entry

As for all implementations of KeyListener, this class is only concerned with hardware keyboards. 
DimenRes Denotes that an integer parameter, field or method return value is expected to be a dimension resource reference (e.g. 
DiscretePathEffect  
Display Provides information about the size and density of a logical display. 
DisplayManager Manages the properties of attached displays. 
DisplayManager.DisplayListener Listens for changes in available display devices. 
DisplayManagerCompat Helper for accessing features in DisplayManager introduced after API level 4 in a backwards compatible fashion. 
DisplayMetrics A structure describing general information about a display, such as its size, density, and font scaling. 
DngCreator The DngCreator class provides functions to write raw pixel data as a DNG file. 
Document The Document interface represents the entire HTML or XML document. 
DocumentBuilder Defines the API to obtain DOM Document instances from an XML document. 
DocumentBuilderFactory Defines a factory API that enables applications to obtain a parser that produces DOM object trees from XML documents. 
Documented Defines a meta-annotation for indicating that an annotation is documented and considered part of the public API. 
DocumentFile Representation of a document backed by either a DocumentsProvider or a raw file on disk. 
DocumentFragment DocumentFragment is a "lightweight" or "minimal" Document object. 
DocumentHandler This interface was deprecated in API level 1. This interface has been replaced by the SAX2 ContentHandler interface, which includes Namespace support. 
DocumentsContract Defines the contract between a documents provider and the platform. 
DocumentsContract.Document Constants related to a document, including Cursor column names and flags. 
DocumentsContract.Root Constants related to a root of documents, including Cursor column names and flags. 
DocumentsProvider Base class for a document provider. 
DocumentType Each Document has a doctype attribute whose value is either null or a DocumentType object. 
DomainCombiner Legacy security code; do not use. 
DOMConfiguration The DOMConfiguration interface represents the configuration of a document and maintains a table of recognized parameters. 
DOMError DOMError is an interface that describes an error. 
DOMErrorHandler DOMErrorHandler is a callback interface that the DOM implementation can call when reporting errors that happens while processing XML data, or when doing some other processing (e.g. 
DOMException DOM operations only raise exceptions in "exceptional" circumstances, i.e., when an operation is impossible to perform (either for logical reasons, because data is lost, or because the implementation has become unstable). 
DOMImplementation The DOMImplementation interface provides a number of methods for performing operations that are independent of any particular instance of the document object model. 
DOMImplementationList The DOMImplementationList interface provides the abstraction of an ordered collection of DOM implementations, without defining or constraining how this collection is implemented. 
DOMImplementationLS DOMImplementationLS contains the factory methods for creating Load and Save objects. 
DOMImplementationSource This interface permits a DOM implementer to supply one or more implementations, based upon requested features and versions, as specified in . 
DOMLocator Indicates the position of a node in a source DOM, intended primarily for error reporting. 
DOMLocator DOMLocator is an interface that describes a location (e.g. 
DOMResult

Acts as a holder for a transformation result tree in the form of a Document Object Model (DOM) tree. 

DOMSource

Acts as a holder for a transformation Source tree in the form of a Document Object Model (DOM) tree. 

DOMStringList The DOMStringList interface provides the abstraction of an ordered collection of DOMString values, without defining or constraining how this collection is implemented. 
DonutScrollerCompatTest  
Double The wrapper for the primitive type double
Double2 Vector version of the basic double type. 
Double2 Class for exposing the native RenderScript double2 type back to the Android system. 
Double3 Vector version of the basic double type. 
Double3 Class for exposing the native RenderScript double3 type back to the Android system. 
Double4 Vector version of the basic double type. 
Double4 Class for exposing the native RenderScript double4 type back to the Android system. 
DoubleBuffer A buffer of doubles. 
DownloadListener  
DownloadManager The download manager is a system service that handles long-running HTTP downloads. 
DownloadManager.Query This class may be used to filter download manager queries. 
DownloadManager.Request This class contains all the information necessary to request a new download. 
DragEvent Represents an event that is sent out by the system at various times during a drag and drop operation. 
Drawable A Drawable is a general abstraction for "something that can be drawn." Most often you will deal with Drawable as the type of resource retrieved for drawing things to the screen; the Drawable class provides a generic API for dealing with an underlying visual resource that may take a variety of forms. 
Drawable.Callback Implement this interface if you want to create an animated drawable that extends Drawable
Drawable.ConstantState This abstract class is used by Drawables to store shared constant state and data between Drawables. 
DrawableCompat Helper for accessing features in Drawable introduced after API level 4 in a backwards compatible fashion. 
DrawableContainer A helper class that contains several Drawables and selects which one to use. 
DrawableContainer.DrawableContainerState A ConstantState that can contain several Drawables. 
DrawableMarginSpan  
DrawableRes Denotes that an integer parameter, field or method return value is expected to be a drawable resource reference (e.g. 
DrawerLayout DrawerLayout acts as a top-level container for window content that allows for interactive "drawer" views to be pulled out from the edge of the window. 
DrawerLayout.DrawerListener Listener for monitoring events about drawers. 
DrawerLayout.LayoutParams  
DrawerLayout.SavedState State persisted across instances  
DrawerLayout.SimpleDrawerListener Stub/no-op implementations of all methods of DrawerLayout.DrawerListener
DrawFilter A DrawFilter subclass can be installed in a Canvas. 
DreamService Extend this class to implement a custom dream (available to the user as a "Daydream"). 
Driver An interface to a JDBC driver. 
Driver SAX2 Driver that pulls events from XmlPullParser and converts them into SAX2 callbacks. 
DriverManager Provides facilities for managing JDBC drivers. 
DriverPropertyInfo A class holding information about driver properties of a database connection. 
DrmConvertedStatus An entity class that wraps converted data, conversion status, and the offset for appending the header and body signature to the converted data. 
DrmErrorEvent An entity class that is passed to the onError() callback. 
DrmEvent A base class that is used to send asynchronous event information from the DRM framework. 
DrmInfo An entity class that describes the information required to send transactions between a device and an online DRM server. 
DrmInfoEvent An entity class that is passed to the onInfo() callback. 
DrmInfoRequest An entity class that is used to pass information to an online DRM server. 
DrmInfoStatus An entity class that wraps the result of communication between a device and an online DRM server. 
DrmManagerClient The main programming interface for the DRM framework. 
DrmManagerClient.OnErrorListener Interface definition for a callback that receives information about DRM framework errors. 
DrmManagerClient.OnEventListener Interface definition for a callback that receives information about DRM processing events. 
DrmManagerClient.OnInfoListener Interface definition for a callback that receives status messages and warnings during registration and rights acquisition. 
DrmRights An entity class that wraps the license information retrieved from the online DRM server. 
DrmStore Defines constants that are used by the DRM framework. 
DrmStore.Action Defines actions that can be performed on rights-protected content. 
DrmStore.ConstraintsColumns Interface definition for the columns that represent DRM constraints. 
DrmStore.DrmObjectType Defines DRM object types. 
DrmStore.Playback Defines playback states for content. 
DrmStore.RightsStatus Defines status notifications for digital rights. 
DrmSupportInfo An entity class that wraps the capability of each DRM plug-in (agent), such as the MIME type and file suffix the DRM plug-in can handle. 
DrmUtils A utility class that provides operations for parsing extended metadata embedded in DRM constraint information. 
DrmUtils.ExtendedMetadataParser Utility that parses extended metadata embedded in DRM constraint information. 
DropBoxManager Enqueues chunks of data (from various sources -- application crashes, kernel log records, etc.). 
DropBoxManager.Entry A single entry retrieved from the drop box. 
DSAKey The base interface for Digital Signature Algorithm (DSA) public or private keys. 
DSAKeyPairGenerator The interface for key generators that can generate DSA key pairs. 
DSAParameterSpec The parameter specification used with the Digital Signature Algorithm (DSA). 
DSAParams The interface for Digital Signature Algorithm (DSA) specific parameters. 
DSAPrivateKey The interface for a Digital Signature Algorithm (DSA) private key. 
DSAPrivateKeySpec The parameters specifying a DSA private key. 
DSAPublicKey The interface for a Digital Signature Algorithm (DSA) public key. 
DSAPublicKeySpec The parameters specifying a DSA public key. 
DTDHandler Receive notification of basic DTD-related events. 
DuplicateFormatFlagsException The unchecked exception will be thrown out if there are duplicate flags given out in the format specifier. 
Duration

Immutable representation of a time span as defined in the W3C XML Schema 1.0 specification. 

DynamicDrawableSpan  
DynamicLayout DynamicLayout is a text layout that updates itself as the text is edited. 

E

EasyEditSpan Provides an easy way to edit a portion of text. 
ECField The base interface for a Finite Field of an Elliptic Curve. 
ECFieldF2m The parameters specifying a characteristic 2 finite field of an elliptic curve. 
ECFieldFp The parameters specifying a prime finite field of an elliptic curve. 
ECGenParameterSpec The parameter specification used to generate elliptic curve domain parameters. 
ECKey The base interface for Elliptic Curve (EC) public or private keys. 
ECParameterSpec The parameter specification used with Elliptic Curve Cryptography (ECC). 
ECPoint A Point on an Elliptic Curve in barycentric (or affine) coordinates. 
ECPrivateKey The interface for an Elliptic Curve (EC) private key. 
ECPrivateKeySpec The parameters specifying an Elliptic Curve (EC) private key. 
ECPublicKey The interface for an Elliptic Curve (EC) public key. 
ECPublicKeySpec The parameters specifying an Elliptic Curve (EC) public key. 
EdgeEffect This class performs the graphical effect used at the edges of scrollable widgets when the user scrolls beyond the content bounds in 2D space. 
EdgeEffectCompat Helper for accessing EdgeEffect introduced after API level 4 in a backwards compatible fashion. 
Editable This is the interface for text whose content and markup can be changed (as opposed to immutable text like Strings). 
Editable.Factory Factory used by TextView to create new Editables. 
EditorInfo An EditorInfo describes several attributes of a text editing object that an input method is communicating with (typically an EditText), most importantly the type of text content it contains and the current cursor position. 
EditText EditText is a thin veneer over TextView that configures itself to be editable. 
EditTextPreference A Preference that allows for string input. 
Effect

Effects are high-performance transformations that can be applied to image frames. 

EffectContext

An EffectContext keeps all necessary state information to run Effects within a Open GL ES 2.0 context. 

EffectFactory

The EffectFactory class defines the list of available Effects, and provides functionality to inspect and instantiate them. 

EffectUpdateListener Some effects may issue callbacks to inform the host of changes to the effect state. 
EGL  
EGL10  
EGL11  
EGL14 EGL 1.4  
EGLConfig Wrapper class for native EGLConfig objects. 
EGLConfig  
EGLContext Wrapper class for native EGLContext objects. 
EGLContext  
EGLDisplay Wrapper class for native EGLDisplay objects. 
EGLDisplay  
EGLExt EGL Extensions  
EGLObjectHandle Base class for wrapped EGL objects. 
EGLSurface Wrapper class for native EGLSurface objects. 
EGLSurface  
Element

An Element represents one item within an Allocation

Element An XML element. 
Element

An Element represents one item within an Allocation

Element The Element interface represents an element in an HTML or XML document. 
Element.Builder Builder class for producing complex elements with matching field and name pairs. 
Element.Builder Builder class for producing complex elements with matching field and name pairs. 
Element.DataKind The special interpretation of the data if required. 
Element.DataKind The special interpretation of the data if required. 
Element.DataType DataType represents the basic type information for a basic element. 
Element.DataType DataType represents the basic type information for a basic element. 
ElementListener Listens for the beginning and ending of elements. 
ElementType Defines an enumeration for Java program elements. 
EllipticCurve An Elliptic Curve with its necessary values. 
EmbossMaskFilter  
EmptyStackException An EmptyStackException is thrown if the pop/peek method of a stack is executed on an empty stack. 
EncodedKeySpec The abstract key specification for a public or a private key in encoded format. 
EncodingUtils The home for utility methods that handle various encoding tasks. 
EncryptedPrivateKeyInfo This class implements the EncryptedPrivateKeyInfo ASN.1 type as specified in PKCS #8 - Private-Key Information Syntax Standard
EndElementListener Listens for the end of elements. 
EndTextElementListener Listens for the end of text elements. 
EnglishReasonPhraseCatalog English reason phrases for HTTP status codes. 
Entity A representation of a item using ContentValues. 
Entity This interface represents a known entity, either parsed or unparsed, in an XML document. 
Entity.NamedContentValues  
EntityDeserializer Default implementation of an entity deserializer. 
EntityEnclosingRequestWrapper A wrapper class for HttpEntityEnclosingRequests that can be used to change properties of the current request without modifying the original object. 
EntityIterator A specialization of Iterator that allows iterating over a collection of Entity objects. 
EntityReference EntityReference nodes may be used to represent an entity reference in the tree. 
EntityResolver Basic interface for resolving entities. 
EntityResolver2 Extended interface for mapping external entity references to input sources, or providing a missing external subset. 
EntitySerializer Default implementation of an entity serializer. 
EntityTemplate Entity that delegates the process of content generation to an abstract content producer. 
EntityUtils Static helpers for dealing with entities
Enum<E extends Enum<E>> The superclass of all enumerated types. 
EnumConstantNotPresentException Thrown if an enum constant does not exist for a particular name. 
Enumeration<E> A legacy iteration interface. 
EnumMap<K extends Enum<K>, V> An Map specialized for use with Enum types as keys. 
EnumSet<E extends Enum<E>> An EnumSet is a specialized Set to be used with enums as keys. 
Environment Provides access to environment variables. 
EnvironmentalReverb A sound generated within a room travels in many directions. 
EnvironmentalReverb.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the EnvironmentalReverb when a parameter value has changed. 
EnvironmentalReverb.Settings The Settings class regroups all environmental reverb parameters. 
EnvironmentCompat Helper for accessing features in Environment introduced after API level 4 in a backwards compatible fashion. 
EOFException Thrown when a program encounters the end of a file or stream during an input operation. 
EofSensorInputStream A stream wrapper that triggers actions on close() and EOF. 
EofSensorWatcher A watcher for EofSensorInputStream
Equalizer An Equalizer is used to alter the frequency response of a particular music source or of the main output mix. 
Equalizer.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the Equalizer when a parameter value has changed. 
Equalizer.Settings The Settings class regroups all equalizer parameters. 
ErrnoException A checked exception thrown when Os methods fail. 
Error Error is the superclass of all classes that represent unrecoverable errors. 
ErrorFragment A fragment for displaying an error indication. 
ErrorHandler Basic interface for SAX error handlers. 
ErrorListener

To provide customized error handling, implement this interface and use the setErrorListener method to register an instance of the implementation with the Transformer

ErrorManager An error reporting facility for Handler implementations to record any error that may happen during logging. 
ErrorSupportFragment A fragment for displaying an error indication. 
ETC1 Methods for encoding and decoding ETC1 textures. 
ETC1Util Utility methods for using ETC1 compressed textures. 
ETC1Util.ETC1Texture A utility class encapsulating a compressed ETC1 texture. 
EventListener EventListener is the superclass of all event listener interfaces. 
EventListenerProxy This abstract class provides a simple wrapper for objects of type EventListener
EventLog Access to the system diagnostic event record. 
EventLog.Event A previously logged event read from the logs. 
EventLogTags This class was deprecated in API level 8. This class is no longer functional. Use EventLog instead.  
EventLogTags.Description  
EventObject EventObjects represent events. 
Exception Exception is the superclass of all classes that represent recoverable exceptions. 
ExceptionInInitializerError Thrown when an exception occurs during class initialization. 
ExceptionUtils The home for utility methods that handle various exception-related tasks. 
Exchanger<V> A synchronization point at which threads can pair and swap elements within pairs. 
ExecutionContext Context attribute names for protocol execution. 
ExecutionException Exception thrown when attempting to retrieve the result of a task that aborted by throwing an exception. 
Executor An object that executes submitted Runnable tasks. 
ExecutorCompletionService<V> A CompletionService that uses a supplied Executor to execute tasks. 
Executors Factory and utility methods for Executor, ExecutorService, ScheduledExecutorService, ThreadFactory, and Callable classes defined in this package. 
ExecutorService An Executor that provides methods to manage termination and methods that can produce a Future for tracking progress of one or more asynchronous tasks. 
ExemptionMechanism This class implements the functionality of an exemption mechanism such as key recovery, key weakening, or key escrow
ExemptionMechanismException This is the base class for ExemptionMechanismException
ExemptionMechanismSpi The Service Provider Interface (SPI) definition for the ExemptionMechanism class. 
ExifInterface This is a class for reading and writing Exif tags in a JPEG file. 
ExpandableListActivity An activity that displays an expandable list of items by binding to a data source implementing the ExpandableListAdapter, and exposes event handlers when the user selects an item. 
ExpandableListAdapter An adapter that links a ExpandableListView with the underlying data. 
ExpandableListView A view that shows items in a vertically scrolling two-level list. 
ExpandableListView.ExpandableListContextMenuInfo Extra menu information specific to an ExpandableListView provided to the onCreateContextMenu(ContextMenu, View, ContextMenuInfo) callback when a context menu is brought up for this AdapterView. 
ExpandableListView.OnChildClickListener Interface definition for a callback to be invoked when a child in this expandable list has been clicked. 
ExpandableListView.OnGroupClickListener Interface definition for a callback to be invoked when a group in this expandable list has been clicked. 
ExpandableListView.OnGroupCollapseListener Used for being notified when a group is collapsed  
ExpandableListView.OnGroupExpandListener Used for being notified when a group is expanded  
Explode This transition tracks changes to the visibility of target views in the start and end scenes and moves views in or out from the edges of the scene. 
ExploreByTouchHelper ExploreByTouchHelper is a utility class for implementing accessibility support in custom Views that represent a collection of View-like logical items. 
Externalizable Defines an interface for classes that want to be serializable, but have their own binary representation. 
ExtractEditText Specialization of EditText for showing and interacting with the extracted text in a full-screen input method. 
ExtractedText Information about text that has been extracted for use by an input method. 
ExtractedTextRequest Description of what an input method would like from an application when extract text from its input editor. 

F

Face Describes a face detected in an image. 
FaceDetector Identifies the faces of people in a Bitmap graphic object. 
FaceDetector.Face A Face contains all the information identifying the location of a face in a bitmap. 
FactoryConfigurationError Thrown when a problem with configuration with the Parser Factories exists. 
Fade This transition tracks changes to the visibility of target views in the start and end scenes and fades views in or out when they become visible or non-visible. 
FeatureGroupInfo A set of features that can be requested by an application. 
FeatureInfo A single feature that can be requested by an application. 
Field This class represents a field. 
FieldPacker Utility class for packing arguments and structures from Android system objects to RenderScript objects. 
FieldPacker Utility class for packing arguments and structures from Android system objects to RenderScript objects. 
FieldPackerThunker Utility class for packing arguments and structures from Android system objects to RenderScript objects. 
FieldPosition Identifies fields in formatted strings. 
File An "abstract" representation of a file system entity identified by a pathname. 
FileBackupHelper A helper class that can be used in conjunction with BackupAgentHelper to manage the backup of a set of files. 
FileChannel An abstract channel type for interaction with a platform file. 
FileChannel.MapMode MapMode defines file mapping mode constants. 
FileDescriptor Wraps a Unix file descriptor. 
FileEntity An entity whose content is retrieved from a file. 
FileFilter An interface for filtering File objects based on their names or other information. 
FileHandler A FileHandler writes logging records into a specified file or a rotating set of files. 
FileInputStream An input stream that reads bytes from a file. 
FileLock A FileLock represents a locked region of a file. 
FileLockInterruptionException A FileLockInterruptionException is thrown when a thread is interrupted while waiting to acquire a file lock. 
FilenameFilter An interface for filtering File objects based on their names or the directory they reside in. 
FileNameMap Defines a scheme for mapping a filename type to a MIME content type. 
FileNotFoundException Thrown when a file specified by a program cannot be found. 
FileObserver Monitors files (using inotify) to fire an event after files are accessed or changed by by any process on the device (including this one). 
FileOutputStream An output stream that writes bytes to a file. 
FilePermission Legacy security code; do not use. 
FileProvider FileProvider is a special subclass of ContentProvider that facilitates secure sharing of files associated with an app by creating a content:// Uri for a file instead of a file:/// Uri
FileReader A specialized Reader that reads from a file in the file system. 
FileWriter A specialized Writer that writes to a file in the file system. 
Filter

A filter constrains data with a filtering pattern. 

Filter A Filter provides a mechanism for exercising fine-grained control over which records get logged. 
Filter.FilterListener

Listener used to receive a notification upon completion of a filtering operation. 

Filter.FilterResults

Holds the results of a filtering operation. 

Filterable

Defines a filterable behavior. 

FilterInputStream Wraps an existing InputStream and performs some transformation on the input data while it is being read. 
FilterOutputStream Wraps an existing OutputStream and performs some transformation on the output data while it is being written. 
FilterQueryProvider This class can be used by external clients of CursorAdapter and CursorTreeAdapter to define how the content of the adapter should be filtered. 
FilterReader Wraps an existing Reader and performs some transformation on the input data while it is being read. 
FilterWriter Wraps an existing Writer and performs some transformation on the output data while it is being written. 
FlakyTest This annotation can be used on an InstrumentationTestCase's test methods. 
Float The wrapper for the primitive type float
Float2 Vector version of the basic float type. 
Float2 Class for exposing the native RenderScript float2 type back to the Android system. 
Float3 Vector version of the basic float type. 
Float3 Class for exposing the native RenderScript float2 type back to the Android system. 
Float4 Vector version of the basic float type. 
Float4 Class for exposing the native RenderScript float2 type back to the Android system. 
FloatArrayEvaluator This evaluator can be used to perform type interpolation between float[] values. 
FloatBuffer A buffer of floats. 
FloatEvaluator This evaluator can be used to perform type interpolation between float values. 
FloatMath Math routines similar to those found in Math
Flushable Defines an interface for classes that can (or need to) be flushed, typically before some output processing is considered to be finished and the object gets closed. 
FocusFinder The algorithm used for finding the next focusable view in a given direction from a view that currently has focus. 
FocusHighlight Interface for highlighting the item that has focus. 
FocusHighlightHelper Setup the behavior how to highlight when a item gains focus. 
ForegroundColorSpan  
ForkJoinPool An ExecutorService for running ForkJoinTasks. 
ForkJoinPool.ForkJoinWorkerThreadFactory Factory for creating new ForkJoinWorkerThreads. 
ForkJoinPool.ManagedBlocker Interface for extending managed parallelism for tasks running in ForkJoinPools. 
ForkJoinTask<V> Abstract base class for tasks that run within a ForkJoinPool
ForkJoinWorkerThread A thread managed by a ForkJoinPool, which executes ForkJoinTasks. 
Format The base class for all formats. 
Format.Field Inner class used to represent Format attributes in the AttributedCharacterIterator that the formatToCharacterIterator() method returns in Format subclasses. 
FormatException  
FormatFlagsConversionMismatchException A FormatFlagsConversionMismatchException will be thrown if a conversion and the flags are incompatible. 
Formattable Classes that handle custom formatting for the 's' specifier of Formatter should implement the Formattable interface. 
FormattableFlags FormattableFlags are used as a parameter to formatTo(Formatter, int, int, int) and change the output format in Formattables. 
FormattedHeader An HTTP header which is already formatted. 
Formatter Utility class to aid in formatting common values that are not covered by the Formatter class in java.util  
Formatter Formats arguments according to a format string (like printf in C). 
Formatter Formatter objects are used to format LogRecord objects into a string representation. 
Formatter.BigDecimalLayoutForm The enumeration giving the available styles for formatting very large decimal numbers. 
FormatterClosedException A FormatterClosedException will be thrown if the formatter has been closed. 
FractionRes Denotes that an integer parameter, field or method return value is expected to be a fraction resource reference. 
Fragment A Fragment is a piece of an application's user interface or behavior that can be placed in an Activity
Fragment Static library support version of the framework's Fragment
Fragment.InstantiationException Thrown by instantiate(Context, String, Bundle) when there is an instantiation failure. 
Fragment.InstantiationException Thrown by instantiate(Context, String, Bundle) when there is an instantiation failure. 
Fragment.SavedState State information that has been retrieved from a fragment instance through FragmentManager.saveFragmentInstanceState
Fragment.SavedState State information that has been retrieved from a fragment instance through FragmentManager.saveFragmentInstanceState
FragmentActivity Base class for activities that want to use the support-based Fragment and Loader APIs. 
FragmentBreadCrumbs This class was deprecated in API level 21. This widget is no longer supported.  
FragmentBreadCrumbs.OnBreadCrumbClickListener Interface to intercept clicks on the bread crumbs. 
FragmentCompat Helper for accessing features in Fragment introduced after API level 13 in a backwards compatible fashion. 
FragmentManager Interface for interacting with Fragment objects inside of an Activity

Developer Guides

For more information about using fragments, read the Fragments developer guide. 

FragmentManager Static library support version of the framework's FragmentManager
FragmentManager.BackStackEntry Representation of an entry on the fragment back stack, as created with FragmentTransaction.addToBackStack()
FragmentManager.BackStackEntry Representation of an entry on the fragment back stack, as created with FragmentTransaction.addToBackStack()
FragmentManager.OnBackStackChangedListener Interface to watch for changes to the back stack. 
FragmentManager.OnBackStackChangedListener Interface to watch for changes to the back stack. 
FragmentPagerAdapter Implementation of PagerAdapter that represents each page as a Fragment that is persistently kept in the fragment manager as long as the user can return to the page. 
FragmentPagerAdapter Implementation of PagerAdapter that represents each page as a Fragment that is persistently kept in the fragment manager as long as the user can return to the page. 
FragmentStatePagerAdapter Implementation of PagerAdapter that uses a Fragment to manage each page. 
FragmentStatePagerAdapter Implementation of PagerAdapter that uses a Fragment to manage each page. 
FragmentTabHost Version of FragmentTabHost that can be used with the platform Fragment APIs. 
FragmentTabHost Special TabHost that allows the use of Fragment objects for its tab content. 
FragmentTransaction API for performing a set of Fragment operations. 
FragmentTransaction Static library support version of the framework's FragmentTransaction
FrameLayout FrameLayout is designed to block out an area on the screen to display a single item. 
FrameLayout.LayoutParams Per-child layout information for layouts that support margins. 
FrameStats This is the base class for frame statistics. 
FullBackupDataOutput Provides the interface through which a BackupAgent writes entire files to a full backup data set, via its onFullBackup(FullBackupDataOutput) method. 
Future<V> A Future represents the result of an asynchronous computation. 
FutureTask<V> A cancellable asynchronous computation. 

G

Gallery This class was deprecated in API level 16. This widget is no longer supported. Other horizontally scrolling widgets include HorizontalScrollView and ViewPager from the support library.  
Gallery.LayoutParams Gallery extends LayoutParams to provide a place to hold current Transformation information along with previous position/transformation info. 
GatheringByteChannel The interface for channels that can write a set of buffers in a single operation. 
GCMParameterSpec Provides a the parameters for an instance of a Cipher using Galois/Counter Mode (GCM). 
GeneralSecurityException GeneralSecurityException is a general security exception and the superclass for all security specific exceptions. 
GenericArrayType This interface represents an array type with a component type that is either a parameterized type or a type variable. 
GenericDeclaration Common interface for language constructs that declare type parameters. 
GenericSignatureFormatError Indicates that a malformed signature has been encountered via a reflective method. 
Geocoder A class for handling geocoding and reverse geocoding. 
GeolocationPermissions This class is used to manage permissions for the WebView's Geolocation JavaScript API. 
GeolocationPermissions.Callback A callback interface used by the host application to set the Geolocation permission state for an origin. 
GeomagneticField Estimates magnetic field at a given point on Earth, and in particular, to compute the magnetic declination from true north. 
Gesture A gesture is a hand-drawn shape on a touch screen. 
GestureDetector Detects various gestures and events using the supplied MotionEvents. 
GestureDetector.OnDoubleTapListener The listener that is used to notify when a double-tap or a confirmed single-tap occur. 
GestureDetector.OnGestureListener The listener that is used to notify when gestures occur. 
GestureDetector.SimpleOnGestureListener A convenience class to extend when you only want to listen for a subset of all the gestures. 
GestureDetectorCompat Detects various gestures and events using the supplied MotionEvents. 
GestureLibraries  
GestureLibrary  
GestureOverlayView A transparent overlay for gesture input that can be placed on top of other widgets or contain other widgets. 
GestureOverlayView.OnGestureListener  
GestureOverlayView.OnGesturePerformedListener  
GestureOverlayView.OnGesturingListener  
GesturePoint A timed point of a gesture stroke. 
GestureStore GestureLibrary maintains gesture examples and makes predictions on a new gesture  
GestureStroke A gesture stroke started on a touch down and ended on a touch up. 
GestureUtils Utility functions for gesture processing & analysis, including methods for:
  • feature extraction (e.g., samplers and those for calculating bounding boxes and gesture path lengths);
  • geometric transformation (e.g., translation, rotation and scaling);
  • gesture similarity comparison (e.g., calculating Euclidean or Cosine distances between two gestures). 
GetChars Please implement this interface if your CharSequence has a getChars() method like the one in String that is faster than calling charAt() multiple times. 
GingerbreadScrollerCompatTest  
GL  
GL10  
GL10Ext  
GL11  
GL11Ext  
GL11ExtensionPack  
GLDebugHelper A helper class for debugging OpenGL ES applications. 
GLES10  
GLES10Ext  
GLES11  
GLES11Ext  
GLES20 OpenGL ES 2.0  
GLES30 OpenGL ES 3.0  
GLES31 OpenGL ES 3.1  
GLES31Ext  
GLES31Ext.DebugProcKHR  
GLException An exception class for OpenGL errors. 
GLSurfaceView An implementation of SurfaceView that uses the dedicated surface for displaying OpenGL rendering. 
GLSurfaceView.EGLConfigChooser An interface for choosing an EGLConfig configuration from a list of potential configurations. 
GLSurfaceView.EGLContextFactory An interface for customizing the eglCreateContext and eglDestroyContext calls. 
GLSurfaceView.EGLWindowSurfaceFactory An interface for customizing the eglCreateWindowSurface and eglDestroySurface calls. 
GLSurfaceView.GLWrapper An interface used to wrap a GL interface. 
GLSurfaceView.Renderer A generic renderer interface. 
GLU A set of GL utilities inspired by the OpenGL Utility Toolkit. 
GLUtils Utility class to help bridging OpenGL ES and Android APIs. 
GpsSatellite This class represents the current state of a GPS satellite. 
GpsStatus This class represents the current state of the GPS engine. 
GpsStatus.Listener Used for receiving notifications when GPS status has changed. 
GpsStatus.NmeaListener Used for receiving NMEA sentences from the GPS. 
GradientDrawable A Drawable with a color gradient for buttons, backgrounds, etc. 
GradientDrawable.Orientation Controls how the gradient is oriented relative to the drawable's bounds  
Gravity Standard constants and tools for placing an object within a potentially larger container. 
GravityCompat Compatibility shim for accessing newer functionality from Gravity
GregorianCalendar GregorianCalendar is a concrete subclass of Calendar and provides the standard calendar used by most of the world. 
GridLayout A layout that places its children in a rectangular grid
GridLayout A layout that places its children in a rectangular grid
GridLayout.Alignment Alignments specify where a view should be placed within a cell group and what size it should be. 
GridLayout.Alignment Alignments specify where a view should be placed within a cell group and what size it should be. 
GridLayout.LayoutParams Layout information associated with each of the children of a GridLayout. 
GridLayout.LayoutParams Layout information associated with each of the children of a GridLayout. 
GridLayout.Spec A Spec defines the horizontal or vertical characteristics of a group of cells. 
GridLayout.Spec A Spec defines the horizontal or vertical characteristics of a group of cells. 
GridLayoutAnimationController A layout animation controller is used to animated a grid layout's children. 
GridLayoutAnimationController.AnimationParameters The set of parameters that has to be attached to each view contained in the view group animated by the grid layout animation controller. 
GridLayoutManager A RecyclerView.LayoutManager implementations that lays out items in a grid. 
GridLayoutManager.DefaultSpanSizeLookup Default implementation for GridLayoutManager.SpanSizeLookup
GridLayoutManager.LayoutParams LayoutParams used by GridLayoutManager. 
GridLayoutManager.SpanSizeLookup A helper class to provide the number of spans each item occupies. 
GridLayoutManagerTest  
GridView A view that shows items in two-dimensional scrolling grid. 
Group A Principal that represents a group of principals. 
GsmCellLocation Represents the cell location on a GSM phone. 
Guard Guard implementors protect access to other objects. 
GuardedObject GuardedObject controls access to an object, by checking all requests for the object with a Guard
GZIPInputStream The GZIPInputStream class is used to read data stored in the GZIP format, reading and decompressing GZIP data from the underlying stream into its buffer. 
GZIPOutputStream The GZIPOutputStream class is used to write data to a stream in the GZIP storage format. 

H

Handler A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue
Handler A Handler object accepts a logging request and exports the desired messages to a target, for example, a file, the console, etc. 
Handler.Callback Callback interface you can use when instantiating a Handler to avoid having to implement your own subclass of Handler. 
HandlerBase This class was deprecated in API level 1. This class works with the deprecated DocumentHandler interface. It has been replaced by the SAX2 DefaultHandler class. 
HandlerThread Handy class for starting a new thread that has a looper. 
HandshakeCompletedEvent The event object encapsulating the information about a completed SSL handshake on a SSL connection. 
HandshakeCompletedListener The listener to be implemented to receive event notifications on completion of SSL handshake on an SSL connection. 
HapticFeedbackConstants Constants to be used to perform haptic feedback effects via performHapticFeedback(int)  
HashMap<K, V> HashMap is an implementation of Map
HashSet<E> HashSet is an implementation of a Set. 
Hashtable<K, V> Hashtable is a synchronized implementation of Map
Header Represents an HTTP header field. 
HeaderElement One element of an HTTP header value. 
HeaderElementIterator A type-safe iterator for HeaderElement objects. 
HeaderGroup A class for combining a set of headers. 
HeaderItem A header item is an item that describes metadata of Row, such as a category of media items. 
HeaderIterator A type-safe iterator for Header objects. 
HeadersFragment An internal fragment containing a list of row headers. 
HeadersSupportFragment An internal fragment containing a list of row headers. 
HeaderValueFormatter Interface for formatting elements of a header value. 
HeaderValueParser Interface for parsing header values into elements. 
HeaderViewListAdapter ListAdapter used when a ListView has header views. 
HeterogeneousExpandableList Additional methods that when implemented make an ExpandableListAdapter take advantage of the Adapter view type mechanism. 
HideReturnsTransformationMethod This transformation method causes any carriage return characters (\r) to be hidden by displaying them as zero-width non-breaking space characters (). 
HorizontalGridView A view that shows items in a horizontal scrolling list. 
HorizontalHoverCardSwitcher Helper class that stay bellow a HorizontalGridView and shows a hover card and align the hover card left to left of selected child view. 
HorizontalScrollView Layout container for a view hierarchy that can be scrolled by the user, allowing it to be larger than the physical display. 
HostApduService

HostApduService is a convenience Service class that can be extended to emulate an NFC card inside an Android service component. 

HostNameResolver  
HostnameVerifier The interface to be used to provide hostname verification functionality. 
Html This class processes HTML strings into displayable styled text. 
Html.ImageGetter Retrieves images for HTML <img> tags. 
Html.TagHandler Is notified when HTML tags are encountered that the parser does not know how to interpret. 
HTTP Constants and static helpers related to the HTTP protocol. 
HttpAbstractParamBean  
HttpAuthHandler Represents a request for HTTP authentication. 
HttpClient Interface for an HTTP client. 
HttpClientConnection An HTTP connection for use on the client side. 
HttpClientParams An adaptor for accessing HTTP client parameters in HttpParams
HttpConnection A generic HTTP connection, useful on client and server side. 
HttpConnectionMetrics The point of access to the statistics of an HttpConnection
HttpConnectionMetricsImpl Implementation of the metrics interface. 
HttpConnectionParamBean  
HttpConnectionParams An adaptor for accessing connection parameters in HttpParams
HttpContext A context for executing a request. 
HttpCookie An opaque key-value value pair held by an HTTP client to permit a stateful session with an HTTP server. 
HttpDateGenerator Generates a date in the format required by the HTTP protocol. 
HttpDelete HTTP DELETE method

The HTTP DELETE method is defined in section 9.7 of RFC2616:

The DELETE method requests that the origin server delete the resource identified by the Request-URI. 
HttpEntity An entity that can be sent or received with an HTTP message. 
HttpEntityEnclosingRequest A request with an entity. 
HttpEntityEnclosingRequestBase Basic implementation of an HTTP request that can be modified. 
HttpEntityWrapper Base class for wrapping entities. 
HttpException Signals that an HTTP exception has occurred. 
HttpExpectationVerifier Defines an interface to verify whether an incoming HTTP request meets the target server's expectations. 
HttpGet HTTP GET method. 
HttpHead HTTP HEAD method. 
HttpHost Holds all of the variables needed to describe an HTTP connection to a host. 
HttpHostConnectException A ConnectException that specifies the HttpHost that was being connected to. 
HttpInetConnection An HTTP connection over the Internet Protocol (IP). 
HttpMessage A generic HTTP message. 
HttpMessageParser Generic message parser interface. 
HttpMessageWriter Generic message writer interface. 
HttpOptions HTTP OPTIONS method. 
HttpParams Represents a collection of HTTP protocol and framework parameters. 
HttpPost HTTP POST method. 
HttpProcessor Performs interceptor processing of requests and responses. 
HttpProtocolParamBean  
HttpProtocolParams This class implements an adaptor around the HttpParams interface to simplify manipulation of the HTTP protocol specific parameters. 
HttpPut HTTP PUT method. 
HttpRequest An HTTP request. 
HttpRequestBase Basic implementation of an HTTP request that can be modified. 
HttpRequestExecutor Sends HTTP requests and receives the responses. 
HttpRequestFactory A factory for HttpRequest objects. 
HttpRequestHandler  
HttpRequestHandlerRegistry Maintains a map of HTTP request handlers keyed by a request URI pattern. 
HttpRequestHandlerResolver Interface to be implemented by objects that can resolve HttpRequestHandler instances by request URI. 
HttpRequestInterceptor Processes a request. 
HttpRequestInterceptorList Provides access to an ordered list of request interceptors. 
HttpRequestParser  
HttpRequestRetryHandler A handler for determining if an HttpRequest should be retried after a recoverable exception during execution. 
HttpRequestWriter  
HttpResponse An HTTP response. 
HttpResponseCache Caches HTTP and HTTPS responses to the filesystem so they may be reused, saving time and bandwidth. 
HttpResponseException Signals a non 2xx HTTP response. 
HttpResponseFactory A factory for HttpResponse objects. 
HttpResponseInterceptor Processes a response. 
HttpResponseInterceptorList Provides access to an ordered list of response interceptors. 
HttpResponseParser  
HttpResponseWriter  
HttpRetryException If a HTTP request has to be retried, this exception will be thrown if the request cannot be retried automatically. 
HttpRoute The route for a request. 
HttpRouteDirector Provides directions on establishing a route. 
HttpRoutePlanner Encapsulates logic to compute a HttpRoute to a target host. 
HttpServerConnection An HTTP connection for use on the server side. 
HttpService Minimalistic server-side implementation of an HTTP processor. 
HttpStatus Constants enumerating the HTTP status codes. 
HttpsURLConnection An HttpURLConnection for HTTPS (RFC 2818). 
HttpTrace HTTP TRACE method. 
HttpTransportMetrics  
HttpTransportMetricsImpl Default implementation of HttpTransportMetrics
HttpUriRequest Extended version of the HttpRequest interface that provides convenience methods to access request properties such as request URI and method type. 
HttpURLConnection An URLConnection for HTTP (RFC 2616) used to send and receive data over the web. 
HttpVersion Represents an HTTP version, as specified in RFC 2616. 

I

IBinder Base interface for a remotable object, the core part of a lightweight remote procedure call mechanism designed for high performance when performing in-process and cross-process calls. 
IBinder.DeathRecipient Interface for receiving a callback when the process hosting an IBinder has gone away. 
IccOpenLogicalChannelResponse Response to the iccOpenLogicalChannel(String) command. 
IconMarginSpan  
IcsScrollerCompatTest  
ICUCompat  
Identity This class was deprecated in API level 1. Use Principal, KeyStore and the java.security.cert package instead.  
IdentityHashMap<K, V> IdentityHashMap is a variant on HashMap which tests equality by reference instead of equality by value. 
IdentityInputStream A stream for reading from a session input buffer
IdentityOutputStream A stream for writing with an "identity" transport encoding. 
IdentityScope This class was deprecated in API level 1. Use Principal, KeyStore and the java.security.cert package instead.  
IdleConnectionHandler A helper class for connection managers to track idle connections. 
IDN Converts internationalized domain names between Unicode and the ASCII Compatible Encoding (ACE) representation. 
IdRes Denotes that an integer parameter, field or method return value is expected to be an id resource reference (e.g. 
IInterface Base class for Binder interfaces. 
IllegalAccessError Thrown when the VM notices that a program tries access a field which is not accessible from where it is referenced. 
IllegalAccessException Thrown when a program attempts to access a field or method which is not accessible from the location where the reference is made. 
IllegalArgumentException Thrown when a method is invoked with an argument which it can not reasonably deal with. 
IllegalBlockingModeException An IllegalBlockingModeException is thrown when an operation that requires a specific blocking mode is invoked on a channel that is in a different blocking mode. 
IllegalBlockSizeException The exception, that is thrown when the data length provided to a block cipher does not match the block size of the cipher. 
IllegalCharsetNameException An IllegalCharsetNameException is thrown when an illegal charset name is encountered. 
IllegalFormatCodePointException An IllegalFormatCodePointException will be thrown if an invalid Unicode code point (defined by isValidCodePoint(int)) is passed as a parameter to a Formatter. 
IllegalFormatConversionException An IllegalFormatConversionException will be thrown when the parameter is incompatible with the corresponding format specifier. 
IllegalFormatException An IllegalFormatException is thrown when a format string that contains either an illegal syntax or format specifier is transferred as a parameter. 
IllegalFormatFlagsException An IllegalFormatFlagsException will be thrown if the combination of the format flags is illegal. 
IllegalFormatPrecisionException An IllegalFormatPrecisionException will be thrown if the precision is a negative other than -1 or in other cases where precision is not supported. 
IllegalFormatWidthException An IllegalFormatWidthException will be thrown if the width is a negative value other than -1 or in other cases where a width is not supported. 
IllegalMonitorStateException Thrown when a monitor operation is attempted when the monitor is not in the correct state, for example when a thread attempts to exit a monitor which it does not own. 
IllegalSelectorException An IllegalSelectorException is thrown when a call is made to register a channel on a selector that has been created by a different provider. 
IllegalStateException Thrown when an action is attempted at a time when the VM is not in the correct state. 
IllegalThreadStateException Thrown when an operation is attempted which is not possible given the state that the executing thread is in. 
IllformedLocaleException Thrown when a locale subtag or field is not well formed. 
Image

A single complete image buffer to use with a media source such as a MediaCodec or a CameraDevice

Image.Plane

A single color plane of image data. 

ImageButton

Displays a button with an image (instead of text) that can be pressed or clicked by the user. 

ImageCardView A card view with an ImageView as its main region. 
ImageFormat  
ImageReader

The ImageReader class allows direct application access to image data rendered into a Surface

Several Android media API classes accept Surface objects as targets to render to, including MediaPlayer, MediaCodec, CameraDevice, and RenderScript Allocations

ImageReader.OnImageAvailableListener Callback interface for being notified that a new image is available. 
ImageSpan  
ImageSwitcher  
ImageView Displays an arbitrary image, such as an icon. 
ImageView.ScaleType Options for scaling the bounds of an image to the bounds of this view. 
IncompatibleClassChangeError IncompatibleClassChangeError is the superclass of all classes which represent errors that occur when inconsistent class files are loaded into the same running image. 
IncompleteAnnotationException Indicates that an element of an annotation type was accessed that was added after the type was compiled or serialized. 
IndexedPropertyChangeEvent A type of PropertyChangeEvent that indicates that an indexed property has changed. 
IndexOutOfBoundsException Thrown when a program attempts to access a value in an indexable collection using a value which is outside of the range of valid indices. 
Inet4Address An IPv4 address. 
Inet6Address An IPv6 address. 
InetAddress An Internet Protocol (IP) address. 
InetAddressUtils A collection of utilities relating to InetAddresses. 
InetSocketAddress This class represents a socket endpoint described by a IP address and a port number. 
InflateException This exception is thrown by an inflater on error conditions. 
Inflater This class decompresses data that was compressed using the DEFLATE algorithm (see specification). 
InflaterInputStream This class provides an implementation of FilterInputStream that decompresses data that was compressed using the DEFLATE algorithm (see specification). 
InflaterOutputStream An OutputStream filter to decompress data. 
InheritableThreadLocal<T> A thread-local variable whose value is passed from parent to child thread. 
Inherited Defines a meta-annotation for indicating that an annotation is automatically inherited. 
InputBinding Information given to an InputMethod about a client connecting to it. 
InputConnection The InputConnection interface is the communication channel from an InputMethod back to the application that is receiving its input. 
InputConnectionWrapper

Wrapper class for proxying calls to another InputConnection. 

InputDevice Describes the capabilities of a particular input device. 
InputDevice.MotionRange Provides information about the range of values for a particular MotionEvent axis. 
InputEvent Common base class for input events. 
InputFilter InputFilters can be attached to Editables to constrain the changes that can be made to them. 
InputFilter.AllCaps This filter will capitalize all the lower case letters that are added through edits. 
InputFilter.LengthFilter This filter will constrain edits not to make the length of the text greater than the specified length. 
InputManager Provides information about input devices and available key layouts. 
InputManager.InputDeviceListener Listens for changes in input devices. 
InputMethod The InputMethod interface represents an input method which can generate key events and text, such as digital, email addresses, CJK characters, other language characters, and etc., while handling various input events, and send the text back to the application that requests text input. 
InputMethod.SessionCallback  
InputMethodInfo This class is used to specify meta information of an input method. 
InputMethodManager Central system API to the overall input method framework (IMF) architecture, which arbitrates interaction between applications and the current input method. 
InputMethodService InputMethodService provides a standard implementation of an InputMethod, which final implementations can derive from and customize. 
InputMethodService.InputMethodImpl Concrete implementation of AbstractInputMethodService.AbstractInputMethodImpl that provides all of the standard behavior for an input method. 
InputMethodService.InputMethodSessionImpl Concrete implementation of AbstractInputMethodService.AbstractInputMethodSessionImpl that provides all of the standard behavior for an input method session. 
InputMethodService.Insets Information about where interesting parts of the input method UI appear. 
InputMethodSession The InputMethodSession interface provides the per-client functionality of InputMethod that is safe to expose to applications. 
InputMethodSession.EventCallback  
InputMethodSubtype This class is used to specify meta information of a subtype contained in an input method editor (IME). 
InputMethodSubtype.InputMethodSubtypeBuilder InputMethodSubtypeBuilder is a builder class of InputMethodSubtype. 
InputMismatchException An InputMismatchException is thrown by a scanner to indicate that the next token does not match or is out of range for the type specified in the pattern. 
InputQueue An input queue provides a mechanism for an application to receive incoming input events. 
InputQueue.Callback Interface to receive notification of when an InputQueue is associated and dissociated with a thread. 
InputSource A single input source for an XML entity. 
InputStream A readable source of bytes. 
InputStreamEntity A streamed entity obtaining content from an InputStream
InputStreamReader A class for turning a byte stream into a character stream. 
InputType Bit definitions for an integer defining the basic content type of text held in an Editable object. 
InsetDrawable A Drawable that insets another Drawable by a specified distance. 
InstantiationError Thrown when the VM notices that a program tries to create a new instance of a class which has no visible constructors from the location where new is invoked. 
InstantiationException Thrown when a program attempts to access a constructor which is not accessible from the location where the reference is made. 
Instrumentation Base class for implementing application instrumentation code. 
Instrumentation.ActivityMonitor Information about a particular kind of Intent that is being monitored. 
Instrumentation.ActivityResult Description of a Activity execution result to return to the original activity. 
InstrumentationInfo Information you can retrieve about a particular piece of test instrumentation. 
InstrumentationTestCase A test case that has access to Instrumentation
InstrumentationTestRunner An Instrumentation that runs various types of TestCases against an Android package (application). 
InstrumentationTestSuite A TestSuite that injects Instrumentation into InstrumentationTestCase before running them. 
Int2 Vector version of the basic int type. 
Int2 Class for exposing the native RenderScript int2 type back to the Android system. 
Int3 Vector version of the basic int type. 
Int3 Class for exposing the native RenderScript int3 type back to the Android system. 
Int4 Vector version of the basic int type. 
Int4 Class for exposing the native RenderScript int4 type back to the Android system. 
IntArrayEvaluator This evaluator can be used to perform type interpolation between int[] values. 
IntBuffer A buffer of ints. 
IntDef Denotes that the annotated element of integer type, represents a logical type and that its value should be one of the explicitly named constants. 
Integer The wrapper for the primitive type int
IntegerRes Denotes that an integer parameter, field or method return value is expected to be an integer resource reference (e.g. 
Intent An intent is an abstract description of an operation to be performed. 
Intent.FilterComparison Wrapper class holding an Intent and implementing comparisons on it for the purpose of filtering. 
Intent.ShortcutIconResource Represents a shortcut/live folder icon resource. 
IntentCompat Helper for accessing features in Intent introduced after API level 4 in a backwards compatible fashion. 
IntentFilter Structured description of Intent values to be matched. 
IntentFilter.AuthorityEntry This is an entry for a single authority in the Iterator returned by authoritiesIterator()
IntentFilter.MalformedMimeTypeException This exception is thrown when a given MIME type does not have a valid syntax. 
IntentSender A description of an Intent and target action to perform with it. 
IntentSender.OnFinished Callback interface for discovering when a send operation has completed. 
IntentSender.SendIntentException Exception thrown when trying to send through a PendingIntent that has been canceled or is otherwise no longer able to execute the request. 
IntentService IntentService is a base class for Services that handle asynchronous requests (expressed as Intents) on demand. 
InterfaceAddress Identifies one of a network interface's addresses. 
InternalError Thrown when the VM notices that it has gotten into an undefined state. 
Interpolator  
Interpolator An interpolator defines the rate of change of an animation. 
Interpolator.Result  
InterpolatorRes Denotes that an integer parameter, field or method return value is expected to be an interpolator resource reference (e.g. 
InterruptedException Thrown when a waiting thread is activated before the condition it was waiting for has been satisfied. 
InterruptedIOException Signals that a blocking I/O operation has been interrupted. 
InterruptibleChannel Channels that implement this interface can be asynchronously closed and interrupted. 
IntEvaluator This evaluator can be used to perform type interpolation between int values. 
InvalidAlgorithmParameterException InvalidAlgorithmParameterException indicates the occurrence of invalid algorithm parameters. 
InvalidClassException Signals a problem during the serialization or or deserialization of an object. 
InvalidCredentialsException Authentication credentials required to respond to a authentication challenge are invalid 
InvalidKeyException InvalidKeyException indicates exceptional conditions, caused by an invalid key. 
InvalidKeySpecException The exception that is thrown when an invalid key specification is encountered. 
InvalidMarkException An InvalidMarkException is thrown when reset() is called on a buffer, but no mark has been set previously. 
InvalidObjectException Signals that, during deserialization, the validation of an object has failed. 
InvalidParameterException InvalidParameterException indicates exceptional conditions, caused by invalid parameters. 
InvalidParameterSpecException The exception that is thrown when an invalid parameter specification is encountered. 
InvalidPreferencesFormatException An exception to indicate that the input XML file is not well-formed or could not be validated against the appropriate document type (specified by in the Preferences). 
InvalidPropertiesFormatException An InvalidPropertiesFormatException is thrown if loading the XML document defining the properties does not follow the Properties specification. 
InvocationHandler Implementors of this interface dispatch methods invoked on proxy instances. 
InvocationTargetException This class provides a wrapper for an exception thrown by a Method or Constructor invocation. 
IOError This error is thrown when a severe I/O error has happened. 
IOException Signals a general, I/O-related error. 
IpPrefix This class represents an IP prefix, i.e., a contiguous block of IP addresses aligned on a power of two boundary (also known as an "IP subnet"). 
IsoDep Provides access to ISO-DEP (ISO 14443-4) properties and I/O operations on a Tag
IsolatedContext A mock context which prevents its users from talking to the rest of the device while stubbing enough methods to satify code that tries to talk to other packages. 
ItemBridgeAdapter Bridge from Presenter to RecyclerView.Adapter. 
ItemBridgeAdapter.AdapterListener Interface for listening to view holder operations. 
ItemBridgeAdapter.ViewHolder  
ItemBridgeAdapter.Wrapper Interface for wrapping a view created by presenter into another view. 
Iterable<T> Instances of classes that implement this interface can be used with the enhanced for loop. 
Iterator<E> An iterator over a sequence of objects, such as a collection. 
IvParameterSpec The algorithm parameter specification for an initialization vector

J

JarEntry Represents a single file in a JAR archive together with the manifest attributes and digital signatures associated with it. 
JarException This runtime exception is thrown when a problem occurs while reading a JAR file. 
JarFile JarFile is used to read jar entries and their associated data from jar files. 
JarInputStream The input stream from which the JAR file to be read may be fetched. 
JarOutputStream The JarOutputStream is used to write data in the JarFile format to an arbitrary output stream  
JarURLConnection This class establishes a connection to a jar: URL using the JAR protocol. 
JavascriptInterface Annotation that allows exposing methods to JavaScript. 
JetPlayer JetPlayer provides access to JET content playback and control. 
JetPlayer.OnJetEventListener Handles the notification when the JET engine generates an event. 
JobInfo Container of data passed to the JobScheduler fully encapsulating the parameters required to schedule work against the calling application. 
JobInfo.Builder Builder class for constructing JobInfo objects. 
JobParameters Contains the parameters used to configure/identify your job. 
JobScheduler This is an API for scheduling various types of jobs against the framework that will be executed in your application's own process. 
JobService

Entry point for the callback from the JobScheduler

JSONArray A dense indexed sequence of values. 
JSONException Thrown to indicate a problem with the JSON API. 
JSONObject A modifiable set of name/value mappings. 
JsonReader Reads a JSON (RFC 4627) encoded value as a stream of tokens. 
JSONStringer Implements toString() and toString()
JsonToken A structure, name or value type in a JSON-encoded string. 
JSONTokener Parses a JSON (RFC 4627) encoded string into the corresponding object. 
JsonWriter Writes a JSON (RFC 4627) encoded value to a stream, one token at a time. 
JsPromptResult Public class for handling JavaScript prompt requests. 
JsResult An instance of this class is passed as a parameter in various WebChromeClient action notifications. 

K

Key Key is the common interface for all keys. 
KeyAgreement This class provides the functionality for a key exchange protocol. 
KeyAgreementSpi The Service Provider Interface (SPI) definition for the KeyAgreement class. 
Keyboard Loads an XML description of a keyboard and stores the attributes of the keys. 
Keyboard.Key Class for describing the position and characteristics of a single key in the keyboard. 
Keyboard.Row Container for keys in the keyboard. 
KeyboardView A view that renders a virtual Keyboard
KeyboardView.OnKeyboardActionListener Listener for virtual keyboard events. 
KeyChain The KeyChain class provides access to private keys and their corresponding certificate chains in credential storage. 
KeyChainAliasCallback The KeyChainAliasCallback is the callback for choosePrivateKeyAlias(Activity, KeyChainAliasCallback, String[], Principal[], String, int, String)
KeyChainException Thrown on problems accessing the KeyChain
KeyCharacterMap Describes the keys provided by a keyboard device and their associated labels. 
KeyCharacterMap.KeyData This class was deprecated in API level 11. instead use getDisplayLabel(int), getNumber(int) and get(int, int).  
KeyCharacterMap.UnavailableException Thrown by load(int) when a key character map could not be loaded. 
KeyEvent Object used to report key and button events. 
KeyEvent.Callback  
KeyEvent.DispatcherState Use with dispatch(Callback, DispatcherState, Object) for more advanced key dispatching, such as long presses. 
KeyEventCompat Helper for accessing features in KeyEvent introduced after API level 4 in a backwards compatible fashion. 
KeyException KeyException is the common superclass of all key related exceptions. 
KeyFactory KeyFactory is an engine class that can be used to translate between public and private key objects and convert keys between their external representation, that can be easily transported and their internal representation. 
KeyFactorySpi KeyFactorySpi is the Service Provider Interface (SPI) definition for KeyFactory
Keyframe This class holds a time/value pair for an animation. 
KeyGenerator This class provides the public API for generating symmetric cryptographic keys. 
KeyGeneratorSpi The Service Provider Interface (SPI) definition for the KeyGenerator class. 
KeyguardManager Class that can be used to lock and unlock the keyboard. 
KeyguardManager.KeyguardLock This class was deprecated in API level 13. Use FLAG_DISMISS_KEYGUARD and/or FLAG_SHOW_WHEN_LOCKED instead; this allows you to seamlessly hide the keyguard as your application moves in and out of the foreground and does not require that any special permissions be requested. Handle returned by newKeyguardLock(String) that allows you to disable / reenable the keyguard.  
KeyguardManager.OnKeyguardExitResult Callback passed to exitKeyguardSecurely(KeyguardManager.OnKeyguardExitResult) to notify caller of result. 
KeyListener Interface for converting text key events into edit operations on an Editable class. 
KeyManagementException KeyManagementException is a general exception, thrown to indicate an exception during processing an operation concerning key management. 
KeyManager This is the interface to implement in order to mark a class as a JSSE key managers so that key managers can be easily grouped. 
KeyManagerFactory The public API for KeyManagerFactory implementations. 
KeyManagerFactorySpi The Service Provider Interface (SPI) for the KeyManagerFactory class. 
KeyPair KeyPair is a container for a public key and a private key. 
KeyPairGenerator KeyPairGenerator is an engine class which is capable of generating a private key and its related public key utilizing the algorithm it was initialized with. 
KeyPairGeneratorSpec This provides the required parameters needed for initializing the KeyPairGenerator that works with Android KeyStore facility
KeyPairGeneratorSpec.Builder Builder class for KeyPairGeneratorSpec objects. 
KeyPairGeneratorSpi KeyPairGeneratorSpi is the Service Provider Interface (SPI) definition for KeyPairGenerator
KeyRep KeyRep is a standardized representation for serialized Key objects. 
KeyRep.Type Type enumerates the supported key types. 
KeySpec The marker interface for key specifications. 
KeyStore KeyStore is responsible for maintaining cryptographic keys and their owners. 
KeyStore.Builder Builder is used to construct new instances of KeyStore
KeyStore.CallbackHandlerProtection CallbackHandlerProtection is a ProtectionParameter that encapsulates a CallbackHandler
KeyStore.Entry Entry is the common marker interface for a KeyStore entry. 
KeyStore.LoadStoreParameter LoadStoreParameter represents a parameter that specifies how a KeyStore can be loaded and stored. 
KeyStore.PasswordProtection PasswordProtection is a ProtectionParameter that protects a KeyStore using a password. 
KeyStore.PrivateKeyEntry PrivateKeyEntry represents a KeyStore entry that holds a private key. 
KeyStore.ProtectionParameter ProtectionParameter is a marker interface for protection parameters. 
KeyStore.SecretKeyEntry SecretKeyEntry represents a KeyStore entry that holds a secret key. 
KeyStore.TrustedCertificateEntry TrustedCertificateEntry represents a KeyStore entry that holds a trusted certificate. 
KeyStoreBuilderParameters The parameters for KeyManagers. 
KeyStoreException KeyStoreException is a general KeyStore exception. 
KeyStoreParameter This provides the optional parameters that can be specified for KeyStore entries that work with Android KeyStore facility
KeyStoreParameter.Builder Builder class for KeyStoreParameter objects. 
KeyStoreSpi KeyStoreSpi is the Service Provider Interface (SPI) definition for KeyStore

L

LabeledIntent A special subclass of Intent that can have a custom label/icon associated with it. 
LangUtils A set of utility methods to help produce consistent equals and hashCode methods. 
LargeTest Marks a test that should run as part of the large tests. 
LastOwnerException The exception that is thrown when an attempt is made to remove the the last Owner from an Owner
LauncherActivity Displays a list of all activities which can be performed for a given intent. 
LauncherActivity.IconResizer Utility class to resize icons to match default icon size. 
LauncherActivity.ListItem An item in the list  
LauncherActivityInfo A representation of an activity that can belong to this user or a managed profile associated with this user. 
LauncherApps Class for retrieving a list of launchable activities for the current user and any associated managed profiles. 
LauncherApps.Callback Callbacks for package changes to this and related managed profiles. 
LaxContentLengthStrategy The lax implementation of the content length strategy. 
LayerDrawable A Drawable that manages an array of other Drawables. 
LayeredSocketFactory A SocketFactory for layered sockets (SSL/TLS). 
LayerRasterizer  
Layout A base class that manages text layout in visual elements on the screen. 
Layout.Alignment  
Layout.Directions Stores information about bidirectional (left-to-right or right-to-left) text within the layout of a line. 
LayoutAnimationController A layout animation controller is used to animated a layout's, or a view group's, children. 
LayoutAnimationController.AnimationParameters The set of parameters that has to be attached to each view contained in the view group animated by the layout animation controller. 
LayoutDirection A class for defining layout directions. 
LayoutInflater Instantiates a layout XML file into its corresponding View objects. 
LayoutInflater.Factory  
LayoutInflater.Factory2  
LayoutInflater.Filter Hook to allow clients of the LayoutInflater to restrict the set of Views that are allowed to be inflated. 
LayoutRes Denotes that an integer parameter, field or method return value is expected to be a layout resource reference (e.g. 
LayoutTransition This class enables automatic animations on layout changes in ViewGroup objects. 
LayoutTransition.TransitionListener This interface is used for listening to starting and ending events for transitions. 
LDAPCertStoreParameters The parameters to initialize a LDAP CertStore instance. 
LeadingMarginSpan A paragraph style affecting the leading margin. 
LeadingMarginSpan.LeadingMarginSpan2 An extended version of LeadingMarginSpan, which allows the implementor to specify the number of lines of the paragraph to which this object is attached that the "first line of paragraph" margin width will be applied to. 
LeadingMarginSpan.Standard The standard implementation of LeadingMarginSpan, which adjusts the margin but does not do any rendering. 
LensShadingMap Immutable class for describing a 4 x N x M lens shading map of floats. 
Level Level objects are used to indicate the level of logging. 
LevelListDrawable A resource that manages a number of alternate Drawables, each assigned a maximum numerical value. 
LexicalHandler SAX2 extension handler for lexical events. 
LightingColorFilter A color filter that can be used to simulate simple lighting effects. 
LinearGradient  
LinearInterpolator An interpolator where the rate of change is constant  
LinearLayout A Layout that arranges its children in a single column or a single row. 
LinearLayout.LayoutParams Per-child layout information associated with ViewLinearLayout. 
LinearLayoutCompat A Layout that arranges its children in a single column or a single row. 
LinearLayoutCompat.LayoutParams Per-child layout information associated with ViewLinearLayout. 
LinearLayoutManager A RecyclerView.LayoutManager implementation which provides similar functionality to ListView
LinearLayoutManager.LayoutChunkResult  
LinearLayoutManagerTest Includes tests for LinearLayoutManager
LinearSmoothScroller RecyclerView.SmoothScroller implementation which uses LinearInterpolator until the target position becames a child of the RecyclerView and then uses DecelerateInterpolator to slowly approach to target position. 
LineBackgroundSpan  
LineFormatter Interface for formatting elements of the HEAD section of an HTTP message. 
LineHeightSpan  
LineHeightSpan.WithDensity  
LineNumberInputStream This class was deprecated in API level 1. Use LineNumberReader instead.  
LineNumberReader Wraps an existing Reader and counts the line terminators encountered while reading the data. 
LineParser Interface for parsing lines in the HEAD section of an HTTP message. 
LinkAddress Identifies an IP address on a network link. 
LinkageError LinkageError is the superclass of all error classes that occur when loading and linking class files. 
LinkedBlockingDeque<E> An optionally-bounded blocking deque based on linked nodes. 
LinkedBlockingQueue<E> An optionally-bounded blocking queue based on linked nodes. 
LinkedHashMap<K, V> LinkedHashMap is an implementation of Map that guarantees iteration order. 
LinkedHashSet<E> LinkedHashSet is a variant of HashSet. 
LinkedList<E> LinkedList is an implementation of List, backed by a doubly-linked list. 
LinkedTransferQueue<E> An unbounded TransferQueue based on linked nodes. 
Linkify Linkify take a piece of text and a regular expression and turns all of the regex matches in the text into clickable links. 
Linkify.MatchFilter MatchFilter enables client code to have more control over what is allowed to match and become a link, and what is not. 
Linkify.TransformFilter TransformFilter enables client code to have more control over how matched patterns are represented as URLs. 
LinkMovementMethod A movement method that traverses links in the text buffer and scrolls if necessary. 
LinkProperties Describes the properties of a network link. 
List<E> A List is a collection which maintains an ordering for its elements. 
ListActivity An activity that displays a list of items by binding to a data source such as an array or Cursor, and exposes event handlers when the user selects an item. 
ListAdapter Extended Adapter that is the bridge between a ListView and the data that backs the list. 
ListFragment A fragment that displays a list of items by binding to a data source such as an array or Cursor, and exposes event handlers when the user selects an item. 
ListFragment Static library support version of the framework's ListFragment
ListIterator<E> An ListIterator is used to sequence over a List of objects. 
ListPopupWindow Static library support version of the framework's ListPopupWindow
ListPopupWindow A ListPopupWindow anchors itself to a host view and displays a list of choices. 
ListPopupWindowCompat Helper for accessing features in ListPopupWindow introduced after API level 4 in a backwards compatible fashion. 
ListPreference A Preference that displays a list of entries as a dialog. 
ListResourceBundle ListResourceBundle is the abstract superclass of classes which provide resources by implementing the getContents() method to return the list of resources. 
ListRow A row composed of a optional HeaderItem, and an ObjectAdapter describing children. 
ListRowHoverCardView ListRowHoverCardView contains a title and description. 
ListRowPresenter ListRowPresenter renders ListRow using a HorizontalGridView hosted in a ListRowView
ListRowPresenter.ViewHolder  
ListRowView ListRowView contains a horizontal grid view. 
ListView A view that shows items in a vertically scrolling list. 
ListView.FixedViewInfo A class that represents a fixed view in a list, for example a header at the top or a footer at the bottom. 
ListViewAutoScrollHelper An implementation of AutoScrollHelper that knows how to scroll through a ListView
LiveFolders This class was deprecated in API level 14. Live folders are no longer supported by Android. These have been replaced by the new AppWidget Collection APIs introduced in HONEYCOMB. These provide all of the features of live folders plus many more. The use of live folders is greatly discouraged because of security issues they introduce -- publishing a live folder requires making all data show for the live folder available to all applications with no permissions protecting it.  
Loader<D> A class that performs asynchronous loading of data. 
Loader<D> Static library support version of the framework's Loader
Loader.ForceLoadContentObserver An implementation of a ContentObserver that takes care of connecting it to the Loader to have the loader re-load its data when the observer is told it has changed. 
Loader.ForceLoadContentObserver An implementation of a ContentObserver that takes care of connecting it to the Loader to have the loader re-load its data when the observer is told it has changed. 
Loader.OnLoadCanceledListener<D> Interface that is implemented to discover when a Loader has been canceled before it finished loading its data. 
Loader.OnLoadCompleteListener<D> Interface that is implemented to discover when a Loader has finished loading its data. 
Loader.OnLoadCompleteListener<D> Interface that is implemented to discover when a Loader has finished loading its data. 
LoaderManager Interface associated with an Activity or Fragment for managing one or more Loader instances associated with it. 
LoaderManager Static library support version of the framework's LoaderManager
LoaderManager.LoaderCallbacks<D> Callback interface for a client to interact with the manager. 
LoaderManager.LoaderCallbacks<D> Callback interface for a client to interact with the manager. 
LoaderTestCase A convenience class for testing Loaders. 
LocalActivityManager This class was deprecated in API level 13. Use the new Fragment and FragmentManager APIs instead; these are also available on older platforms through the Android compatibility package.  
LocalBroadcastManager Helper to register for and send broadcasts of Intents to local objects within your process. 
Locale Locale represents a language/country/variant combination. 
Locale.Builder A class that helps construct Locale instances. 
LocaleSpan Changes the Locale of the text to which the span is attached. 
LocalServerSocket Non-standard class for creating an inbound UNIX-domain socket in the Linux abstract namespace. 
LocalSocket Creates a (non-server) socket in the UNIX-domain namespace. 
LocalSocketAddress A UNIX-domain (AF_LOCAL) socket address. 
LocalSocketAddress.Namespace The namespace that this address exists in. 
Location A data class representing a geographic location. 
LocationListener Used for receiving notifications from the LocationManager when the location has changed. 
LocationManager This class provides access to the system location services. 
LocationProvider An abstract superclass for location providers. 
Locator Interface for associating a SAX event with a document location. 
Locator2 SAX2 extension to augment the entity information provided though a Locator
Locator2Impl SAX2 extension helper for holding additional Entity information, implementing the Locator2 interface. 
LocatorImpl Provide an optional convenience implementation of Locator. 
Lock Lock implementations provide more extensive locking operations than can be obtained using synchronized methods and statements. 
LockSupport Basic thread blocking primitives for creating locks and other synchronization classes. 
Log API for sending log output. 
Logger Loggers are used to log records to a variety of destinations such as log files or the console. 
LoggingMXBean LoggingMXBean is the management interface for the logging sub-system. 
LoggingPermission Legacy security code; do not use. 
LoggingSessionInputBuffer Logs all data read to the wire LOG. 
LoggingSessionOutputBuffer Logs all data written to the wire LOG. 
LoginException Base class for exceptions that are thrown when a login error occurs. 
LoginFilter Abstract class for filtering login-related text (user names and passwords)  
LoginFilter.PasswordFilterGMail This filter is compatible with GMail passwords which restricts characters to the Latin-1 (ISO8859-1) char set. 
LoginFilter.UsernameFilterGeneric This filter rejects characters in the user name that are not compatible with Google login. 
LoginFilter.UsernameFilterGMail This filter rejects characters in the user name that are not compatible with GMail account creation. 
LogManager LogManager is used to maintain configuration properties of the logging framework, and to manage a hierarchical namespace of all named Logger objects. 
LogPrinter Implementation of a Printer that sends its output to the system log. 
LogRecord A LogRecord object represents a logging request. 
Long The wrapper for the primitive type long
Long2 Vector version of the basic long type. 
Long2 Class for exposing the native RenderScript long2 type back to the Android system. 
Long3 Vector version of the basic long type. 
Long3 Class for exposing the native RenderScript long3 type back to the Android system. 
Long4 Vector version of the basic long type. 
Long4 Class for exposing the native RenderScript long4 type back to the Android system. 
LongBuffer A buffer of longs. 
LongSparseArray<E> SparseArray mapping longs to Objects, a version of the platform's LongSparseArray that can be used on older versions of the platform. 
LongSparseArray<E> SparseArray mapping longs to Objects. 
Looper Class used to run a message loop for a thread. 
LoudnessEnhancer LoudnessEnhancer is an audio effect for increasing audio loudness. 
LruCache<K, V> Static library version of LruCache
LruCache<K, V> A cache that holds strong references to a limited number of values. 
LSException Parser or write operations may throw an LSException if the processing is stopped. 
LSInput This interface represents an input source for data. 
LSOutput This interface represents an output destination for data. 
LSParser An interface to an object that is able to build, or augment, a DOM tree from various input sources. 
LSParserFilter LSParserFilters provide applications the ability to examine nodes as they are being constructed while parsing. 
LSResourceResolver LSResourceResolver provides a way for applications to redirect references to external resources. 
LSSerializer A LSSerializer provides an API for serializing (writing) a DOM document out into XML. 

M

Mac This class provides the public API for Message Authentication Code (MAC) algorithms. 
MacSpi The Service-Provider Interface (SPI) definition for the Mac class. 
MailTo MailTo URL parser This class parses a mailto scheme URL and then can be queried for the parsed parameters. 
MalformedChallengeException Signals that authentication challenge is in some way invalid or illegal in the given context 
MalformedChunkCodingException Signals a malformed chunked stream. 
MalformedCookieException Signals that a cookie is in some way invalid or illegal in a given context 
MalformedInputException A MalformedInputException is thrown when a malformed input is encountered, for example if a byte sequence is illegal for the given charset. 
MalformedJsonException Thrown when a reader encounters malformed JSON. 
MalformedParameterizedTypeException Indicates that a malformed parameterized type has been encountered by a reflective method. 
MalformedURLException This exception is thrown when a program attempts to create an URL from an incorrect specification. 
ManagedClientConnection A client-side connection with advanced connection logic. 
ManagerFactoryParameters The marker interface for key manager factory parameters. 
Manifest  
Manifest The Manifest class is used to obtain attribute information for a JarFile and its entries. 
Manifest.permission  
Manifest.permission_group  
Map<K, V> A Map is a data structure consisting of a set of keys and values in which each key is mapped to a single value. 
Map.Entry<K, V> Map.Entry is a key/value mapping contained in a Map
MappedByteBuffer MappedByteBuffer is a special kind of direct byte buffer which maps a region of file to memory. 
MarginLayoutParamsCompat Helper for accessing API features in MarginLayoutParams added after API 4. 
MaskFilter MaskFilter is the base class for object that perform transformations on an alpha-channel mask before drawing it. 
MaskFilterSpan  
Matcher The result of applying a Pattern to a given input. 
MatchResult Holds the results of a successful match of a Pattern against a given string. 
Math Class Math provides basic math constants and operations such as trigonometric functions, hyperbolic functions, exponential, logarithms, etc. 
MathContext Immutable objects describing settings such as rounding mode and digit precision for the numerical operations provided by class BigDecimal
Matrix The Matrix class holds a 3x3 matrix for transforming coordinates. 
Matrix Matrix math utilities. 
Matrix.ScaleToFit Controlls how the src rect should align into the dst rect for setRectToRect(). 
Matrix2f Class for exposing the native RenderScript rs_matrix2x2 type back to the Android system. 
Matrix2f Class for exposing the native RenderScript rs_matrix2x2 type back to the Android system. 
Matrix3f Class for exposing the native RenderScript rs_matrix3x3 type back to the Android system. 
Matrix3f Class for exposing the native RenderScript rs_matrix3x3 type back to the Android system. 
Matrix4f Class for exposing the native RenderScript rs_matrix4x4 type back to the Android system. 
Matrix4f Class for exposing the native RenderScript rs_matrix4x4 type back to the Android system. 
MatrixCursor A mutable cursor implementation backed by an array of Objects. 
MatrixCursor.RowBuilder Builds a row of values using either of these approaches:
  • Values can be added with explicit column ordering using add(Object), which starts from the left-most column and adds one column value at a time. 
MediaActionSound

A class for producing sounds that match those produced by various actions taken by the media and camera APIs. 

MediaBrowser Browses media content offered by a link MediaBrowserService. 
MediaBrowser.ConnectionCallback Callbacks for connection related events. 
MediaBrowser.MediaItem  
MediaBrowser.SubscriptionCallback Callbacks for subscription related events. 
MediaBrowserService Base class for media browse services. 
MediaBrowserService.BrowserRoot Contains information that the browser service needs to send to the client when first connected. 
MediaBrowserService.Result<T> Completion handler for asynchronous callback methods in MediaBrowserService
MediaCodec MediaCodec class can be used to access low-level media codec, i.e. 
MediaCodec.BufferInfo Per buffer metadata includes an offset and size specifying the range of valid data in the associated codec (output) buffer. 
MediaCodec.Callback MediaCodec callback interface. 
MediaCodec.CodecException Thrown when an internal codec error occurs. 
MediaCodec.CryptoException Thrown when a crypto error occurs while queueing a secure input buffer. 
MediaCodec.CryptoInfo Metadata describing the structure of a (at least partially) encrypted input sample. 
MediaCodecInfo Provides information about a given media codec available on the device. 
MediaCodecInfo.AudioCapabilities A class that supports querying the audio capabilities of a codec. 
MediaCodecInfo.CodecCapabilities Encapsulates the capabilities of a given codec component. 
MediaCodecInfo.CodecProfileLevel Encapsulates the profiles available for a codec component. 
MediaCodecInfo.EncoderCapabilities A class that supports querying the encoding capabilities of a codec. 
MediaCodecInfo.VideoCapabilities A class that supports querying the video capabilities of a codec. 
MediaCodecList Allows you to enumerate available codecs, each specified as a MediaCodecInfo object, find a codec supporting a given format and query the capabilities of a given codec. 
MediaControlIntent Constants for media control intents. 
MediaController Allows an app to interact with an ongoing media session. 
MediaController A view containing controls for a MediaPlayer. 
MediaController.Callback Callback for receiving updates on from the session. 
MediaController.MediaPlayerControl  
MediaController.PlaybackInfo Holds information about the current playback and how audio is handled for this session. 
MediaController.TransportControls Interface for controlling media playback on a session. 
MediaControllerCompat Allows an app to interact with an ongoing media session. 
MediaControllerCompat.Callback Callback for receiving updates on from the session. 
MediaControllerCompat.PlaybackInfo Holds information about the way volume is handled for this session. 
MediaControllerCompat.TransportControls Interface for controlling media playback on a session. 
MediaCrypto MediaCrypto class can be used in conjunction with MediaCodec to decode encrypted media data. 
MediaCryptoException Exception thrown if MediaCrypto object could not be instantiated for whatever reason. 
MediaDescription A simple set of metadata for a media item suitable for display. 
MediaDescription.Builder Builder for MediaDescription objects. 
MediaDrm MediaDrm can be used to obtain keys for decrypting protected media streams, in conjunction with MediaCrypto
MediaDrm.CryptoSession In addition to supporting decryption of DASH Common Encrypted Media, the MediaDrm APIs provide the ability to securely deliver session keys from an operator's session key server to a client device, based on the factory-installed root of trust, and then perform encrypt, decrypt, sign and verify operations with the session key on arbitrary user data. 
MediaDrm.KeyRequest Contains the opaque data an app uses to request keys from a license server  
MediaDrm.MediaDrmStateException Thrown when an unrecoverable failure occurs during a MediaDrm operation. 
MediaDrm.OnEventListener Interface definition for a callback to be invoked when a drm event occurs  
MediaDrm.ProvisionRequest Contains the opaque data an app uses to request a certificate from a provisioning server  
MediaDrmException Base class for MediaDrm exceptions  
MediaExtractor MediaExtractor facilitates extraction of demuxed, typically encoded, media data from a data source. 
MediaFormat Encapsulates the information describing the format of media data, be it audio or video. 
MediaItemMetadata Constants for specifying metadata about a media item as a Bundle
MediaItemStatus Describes the playback status of a media item. 
MediaItemStatus.Builder Builder for media item status objects
MediaMetadata Contains metadata about an item, such as the title, artist, etc. 
MediaMetadata.Builder Use to build MediaMetadata objects. 
MediaMetadataCompat Contains metadata about an item, such as the title, artist, etc. 
MediaMetadataCompat.Builder Use to build MediaMetadata objects. 
MediaMetadataEditor This class was deprecated in API level 21. Use MediaMetadata instead together with MediaSession.  
MediaMetadataRetriever MediaMetadataRetriever class provides a unified interface for retrieving frame and meta data from an input media file. 
MediaMuxer MediaMuxer facilitates muxing elementary streams. 
MediaMuxer.OutputFormat Defines the output format. 
MediaPlayer MediaPlayer class can be used to control playback of audio/video files and streams. 
MediaPlayer.OnBufferingUpdateListener Interface definition of a callback to be invoked indicating buffering status of a media resource being streamed over the network. 
MediaPlayer.OnCompletionListener Interface definition for a callback to be invoked when playback of a media source has completed. 
MediaPlayer.OnErrorListener Interface definition of a callback to be invoked when there has been an error during an asynchronous operation (other errors will throw exceptions at method call time). 
MediaPlayer.OnInfoListener Interface definition of a callback to be invoked to communicate some info and/or warning about the media or its playback. 
MediaPlayer.OnPreparedListener Interface definition for a callback to be invoked when the media source is ready for playback. 
MediaPlayer.OnSeekCompleteListener Interface definition of a callback to be invoked indicating the completion of a seek operation. 
MediaPlayer.OnTimedTextListener Interface definition of a callback to be invoked when a timed text is available for display. 
MediaPlayer.OnVideoSizeChangedListener Interface definition of a callback to be invoked when the video size is first known or updated  
MediaPlayer.TrackInfo Class for MediaPlayer to return each audio/video/subtitle track's metadata. 
MediaProjection A token granting applications the ability to capture screen contents and/or record system audio. 
MediaProjection.Callback Callbacks for the projection session. 
MediaProjectionManager Manages the retrieval of certain types of MediaProjection tokens. 
MediaRecorder Used to record audio and video. 
MediaRecorder.AudioEncoder Defines the audio encoding. 
MediaRecorder.AudioSource Defines the audio source. 
MediaRecorder.OnErrorListener Interface definition for a callback to be invoked when an error occurs while recording. 
MediaRecorder.OnInfoListener Interface definition for a callback to be invoked when an error occurs while recording. 
MediaRecorder.OutputFormat Defines the output format. 
MediaRecorder.VideoEncoder Defines the video encoding. 
MediaRecorder.VideoSource Defines the video source. 
MediaRouteActionProvider The media route action provider displays a media route button in the application's ActionBar to allow the user to select routes and to control the currently selected route. 
MediaRouteActionProvider The media route action provider displays a media route button in the application's ActionBar to allow the user to select routes and to control the currently selected route. 
MediaRouteButton  
MediaRouteButton The media route button allows the user to select routes and to control the currently selected route. 
MediaRouteChooserDialog This class implements the route chooser dialog for MediaRouter
MediaRouteChooserDialogFragment Media route chooser dialog fragment. 
MediaRouteControllerDialog This class implements the route controller dialog for MediaRouter
MediaRouteControllerDialogFragment Media route controller dialog fragment. 
MediaRouteDescriptor Describes the properties of a route. 
MediaRouteDescriptor.Builder Builder for media route descriptors
MediaRouteDialogFactory The media route dialog factory is responsible for creating the media route chooser and controller dialogs as needed. 
MediaRouteDiscoveryFragment Media route discovery fragment. 
MediaRouteDiscoveryRequest Describes the kinds of routes that the media router would like to discover and whether to perform active scanning. 
MediaRouteProvider Media route providers are used to publish additional media routes for use within an application. 
MediaRouteProvider.Callback Callback which is invoked when route information becomes available or changes. 
MediaRouteProvider.ProviderMetadata Describes properties of the route provider's implementation. 
MediaRouteProvider.RouteController Provides control over a particular route. 
MediaRouteProviderDescriptor Describes the state of a media route provider and the routes that it publishes. 
MediaRouteProviderDescriptor.Builder Builder for media route provider descriptors
MediaRouteProviderService Base class for media route provider services. 
MediaRouter MediaRouter allows applications to control the routing of media channels and streams from the current device to external speakers and destination devices. 
MediaRouter MediaRouter allows applications to control the routing of media channels and streams from the current device to external speakers and destination devices. 
MediaRouter.Callback Interface for receiving events about media routing changes. 
MediaRouter.Callback Interface for receiving events about media routing changes. 
MediaRouter.ControlRequestCallback Callback which is invoked with the result of a media control request. 
MediaRouter.ProviderInfo Provides information about a media route provider. 
MediaRouter.RouteCategory Definition of a category of routes. 
MediaRouter.RouteGroup Information about a route that consists of multiple other routes in a group. 
MediaRouter.RouteInfo Information about a media route. 
MediaRouter.RouteInfo Provides information about a media route. 
MediaRouter.SimpleCallback Stub implementation of MediaRouter.Callback
MediaRouter.UserRouteInfo Information about a route that the application may define and modify. 
MediaRouter.VolumeCallback Interface for receiving events about volume changes. 
MediaRouteSelector Describes the capabilities of routes that applications would like to discover and use. 
MediaRouteSelector.Builder Builder for media route selectors
MediaScannerConnection MediaScannerConnection provides a way for applications to pass a newly created or downloaded media file to the media scanner service. 
MediaScannerConnection.MediaScannerConnectionClient An interface for notifying clients of MediaScannerConnection when a connection to the MediaScanner service has been established and when the scanning of a file has completed. 
MediaScannerConnection.OnScanCompletedListener Interface for notifying clients of the result of scanning a requested media file. 
MediaSession Allows interaction with media controllers, volume keys, media buttons, and transport controls. 
MediaSession.Callback Receives media buttons, transport controls, and commands from controllers and the system. 
MediaSession.QueueItem A single item that is part of the play queue. 
MediaSession.Token Represents an ongoing session. 
MediaSessionCompat Allows interaction with media controllers, volume keys, media buttons, and transport controls. 
MediaSessionCompat.Callback Receives transport controls, media buttons, and commands from controllers and the system. 
MediaSessionCompat.Token Represents an ongoing session. 
MediaSessionManager Provides support for interacting with media sessions that applications have published to express their ongoing media playback state. 
MediaSessionManager.OnActiveSessionsChangedListener Listens for changes to the list of active sessions. 
MediaSessionStatus Describes the playback status of a media session. 
MediaSessionStatus.Builder Builder for media session status objects
MediaStore The Media provider contains meta data for all available media on both internal and external storage devices. 
MediaStore.Audio Container for all audio content. 
MediaStore.Audio.AlbumColumns Columns representing an album  
MediaStore.Audio.Albums Contains artists for audio files  
MediaStore.Audio.ArtistColumns Columns representing an artist  
MediaStore.Audio.Artists Contains artists for audio files  
MediaStore.Audio.Artists.Albums Sub-directory of each artist containing all albums on which a song by the artist appears. 
MediaStore.Audio.AudioColumns Columns for audio file that show up in multiple tables. 
MediaStore.Audio.Genres Contains all genres for audio files  
MediaStore.Audio.Genres.Members Sub-directory of each genre containing all members. 
MediaStore.Audio.GenresColumns Columns representing an audio genre  
MediaStore.Audio.Media  
MediaStore.Audio.Playlists Contains playlists for audio files  
MediaStore.Audio.Playlists.Members Sub-directory of each playlist containing all members. 
MediaStore.Audio.PlaylistsColumns Columns representing a playlist  
MediaStore.Audio.Radio  
MediaStore.Files Media provider table containing an index of all files in the media storage, including non-media files. 
MediaStore.Files.FileColumns Fields for master table for all media files. 
MediaStore.Images Contains meta data for all available images. 
MediaStore.Images.ImageColumns  
MediaStore.Images.Media  
MediaStore.Images.Thumbnails This class allows developers to query and get two kinds of thumbnails: MINI_KIND: 512 x 384 thumbnail MICRO_KIND: 96 x 96 thumbnail  
MediaStore.MediaColumns Common fields for most MediaProvider tables  
MediaStore.Video  
MediaStore.Video.Media  
MediaStore.Video.Thumbnails This class allows developers to query and get two kinds of thumbnails: MINI_KIND: 512 x 384 thumbnail MICRO_KIND: 96 x 96 thumbnail  
MediaStore.Video.VideoColumns  
MediaSyncEvent The MediaSyncEvent class defines events that can be used to synchronize playback or capture actions between different players and recorders. 
MediumTest Marks a test that should run as part of the medium tests. 
Member Common interface providing access to reflective information on class members. 
MemoryFile MemoryFile is a wrapper for the Linux ashmem driver. 
MemoryHandler A Handler put the description of log events into a cycled memory buffer. 
Menu Interface for managing the items in a menu. 
MenuCompat Helper for accessing features in Menu introduced after API level 4 in a backwards compatible fashion. 
MenuInflater This class is used to instantiate menu XML files into Menu objects. 
MenuItem Interface for direct access to a previously created menu item. 
MenuItem.OnActionExpandListener Interface definition for a callback to be invoked when a menu item marked with SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW is expanded or collapsed. 
MenuItem.OnMenuItemClickListener Interface definition for a callback to be invoked when a menu item is clicked. 
MenuItemCompat Helper for accessing features in MenuItem introduced after API level 4 in a backwards compatible fashion. 
MenuItemCompat.OnActionExpandListener Interface definition for a callback to be invoked when a menu item marked with SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW is expanded or collapsed. 
MenuRes Denotes that an integer parameter, field or method return value is expected to be a menu resource reference. 
MergeCursor A convience class that lets you present an array of Cursors as a single linear Cursor. 
Message Defines a message containing a description and arbitrary data object that can be sent to a Handler
MessageDigest Uses a one-way hash function to turn an arbitrary number of bytes into a fixed-length byte sequence. 
MessageDigestSpi MessageDigestSpi is the Service Provider Interface (SPI) definition for MessageDigest
MessageFormat Produces concatenated messages in language-neutral way. 
MessageFormat.Field The instances of this inner class are used as attribute keys in AttributedCharacterIterator that the formatToCharacterIterator(Object) method returns. 
MessageQueue Low-level class holding the list of messages to be dispatched by a Looper
MessageQueue.IdleHandler Callback interface for discovering when a thread is going to block waiting for more messages. 
Messenger Reference to a Handler, which others can use to send messages to it. 
MetaKeyKeyListener This base class encapsulates the behavior for tracking the state of meta keys such as SHIFT, ALT and SYM as well as the pseudo-meta state of selecting text. 
MeteringRectangle An immutable class to represent a rectangle (x, y, width, height) with an additional weight component. 
Method This class represents a method. 
MethodNotSupportedException Indicates that an HTTP method is not supported. 
MetricAffectingSpan The classes that affect character-level text formatting in a way that changes the width or height of characters extend this class. 
MGF1ParameterSpec The parameter specification for the Mask Generation Function (MGF1) in the RSA-PSS Signature and OAEP Padding scheme. 
MifareClassic Provides access to MIFARE Classic properties and I/O operations on a Tag
MifareUltralight Provides access to MIFARE Ultralight properties and I/O operations on a Tag
MimeTypeMap Two-way map that maps MIME-types to file extensions and vice versa. 
MissingFormatArgumentException A MissingFormatArgumentException will be thrown if there is no corresponding argument with the specified conversion or an argument index that refers to a missing argument. 
MissingFormatWidthException A MissingFormatWidthException will be thrown if the format width is missing but is required. 
MissingResourceException A MissingResourceException is thrown by ResourceBundle when a resource bundle cannot be found or a resource is missing from a resource bundle. 
MockApplication A mock Application class. 
MockContentProvider Mock implementation of ContentProvider. 
MockContentResolver

An extension of ContentResolver that is designed for testing. 

MockContext A mock Context class. 
MockCursor

A mock Cursor class that isolates the test code from real Cursor implementation. 

MockDialogInterface A mock DialogInterface class. 
MockPackageManager A mock PackageManager class. 
MockResources A mock Resources class. 
Modifier This class provides static methods to decode class and member modifiers. 
MonthDisplayHelper Helps answer common questions that come up when displaying a month in a 6 row calendar grid format. 
MoreAsserts Contains additional assertion methods not found in JUnit. 
MotionEvent Object used to report movement (mouse, pen, finger, trackball) events. 
MotionEvent.PointerCoords Transfer object for pointer coordinates. 
MotionEvent.PointerProperties Transfer object for pointer properties. 
MotionEventCompat Helper for accessing features in MotionEvent introduced after API level 4 in a backwards compatible fashion. 
MovementMethod Provides cursor positioning, scrolling and text selection functionality in a TextView
Movie  
MtpConstants A class containing constants in the MTP and PTP specifications. 
MtpDevice This class represents an MTP or PTP device connected on the USB host bus. 
MtpDeviceInfo This class encapsulates information about an MTP device. 
MtpObjectInfo This class encapsulates information about an object on an MTP device. 
MtpStorageInfo This class encapsulates information about a storage unit on an MTP device. 
MultiAutoCompleteTextView An editable text view, extending AutoCompleteTextView, that can show completion suggestions for the substring of the text where the user is typing instead of necessarily for the entire thing. 
MultiAutoCompleteTextView.CommaTokenizer This simple Tokenizer can be used for lists where the items are separated by a comma and one or more spaces. 
MultiAutoCompleteTextView.Tokenizer  
MulticastSocket This class implements a multicast socket for sending and receiving IP multicast datagram packets. 
MultiDex Monkey patches the application context class loader in order to load classes from more than one dex file. 
MultiDexApplication Minimal MultiDex capable application. 
MultiDexTestRunner InstrumentationTestRunner for testing application needing multidex support. 
MultihomePlainSocketFactory Socket factory that implements a simple multi-home fail-over on connect failure, provided the same hostname resolves to multiple InetAddresses. 
MultiSelectListPreference A Preference that displays a list of entries as a dialog. 
MultiTapKeyListener This is the standard key listener for alphabetic input on 12-key keyboards. 
MutableBoolean  
MutableByte  
MutableChar  
MutableContextWrapper Special version of ContextWrapper that allows the base context to be modified after it is initially set. 
MutableDouble  
MutableFloat  
MutableInt  
MutableLong  
MutableShort  

N

NamedNodeMap Objects implementing the NamedNodeMap interface are used to represent collections of nodes that can be accessed by name. 
NameList The NameList interface provides the abstraction of an ordered collection of parallel pairs of name and namespace values (which could be null values), without defining or constraining how this collection is implemented. 
NamespaceContext

Interface for read only XML Namespace context processing. 

NamespaceSupport Encapsulate Namespace logic for use by applications using SAX, or internally by SAX drivers. 
NameValuePair A simple class encapsulating an attribute/value pair. 
NativeActivity Convenience for implementing an activity that will be implemented purely in native code. 
NavigableMap<K, V> A SortedMap extended with navigation methods returning the closest matches for given search targets. 
NavigableSet<E> A SortedSet extended with navigation methods reporting closest matches for given search targets. 
NavUtils NavUtils provides helper functionality for applications implementing recommended Android UI navigation patterns. 
NClob  
Ndef Provides access to NDEF content and operations on a Tag
NdefFormatable Provide access to NDEF format operations on a Tag
NdefMessage Represents an immutable NDEF Message. 
NdefRecord Represents an immutable NDEF Record. 
NegativeArraySizeException Thrown when an attempt is made to create an array with a size of less than zero. 
NeighboringCellInfo Represents the neighboring cell information, including Received Signal Strength and Cell ID location. 
NetPermission Legacy security code; do not use. 
NetscapeDomainHandler  
NetscapeDraftHeaderParser  
NetscapeDraftSpec Netscape cookie draft compliant cookie policy 
NetscapeDraftSpecFactory  
Network Identifies a Network
NetworkCapabilities This class represents the capabilities of a network. 
NetworkErrorException  
NetworkInfo Describes the status of a network interface. 
NetworkInfo.DetailedState The fine-grained state of a network connection. 
NetworkInfo.State Coarse-grained network state. 
NetworkInterface This class is used to represent a network interface of the local device. 
NetworkOnMainThreadException The exception that is thrown when an application attempts to perform a networking operation on its main thread. 
NetworkRequest Defines a request for a network, made through NetworkRequest.Builder and used to request a network via requestNetwork(NetworkRequest, ConnectivityManager.NetworkCallback) or listen for changes via registerNetworkCallback(NetworkRequest, ConnectivityManager.NetworkCallback)
NetworkRequest.Builder Builder used to create NetworkRequest objects. 
NfcA Provides access to NFC-A (ISO 14443-3A) properties and I/O operations on a Tag
NfcAdapter Represents the local NFC adapter. 
NfcAdapter.CreateBeamUrisCallback  
NfcAdapter.CreateNdefMessageCallback A callback to be invoked when another NFC device capable of NDEF push (Android Beam) is within range. 
NfcAdapter.OnNdefPushCompleteCallback A callback to be invoked when the system successfully delivers your NdefMessage to another device. 
NfcAdapter.ReaderCallback A callback to be invoked when the system finds a tag while the foreground activity is operating in reader mode. 
NfcB Provides access to NFC-B (ISO 14443-3B) properties and I/O operations on a Tag
NfcBarcode Provides access to tags containing just a barcode. 
NfcEvent Wraps information associated with any NFC event. 
NfcF Provides access to NFC-F (JIS 6319-4) properties and I/O operations on a Tag
NfcManager High level manager used to obtain an instance of an NfcAdapter
NfcV Provides access to NFC-V (ISO 15693) properties and I/O operations on a Tag
NinePatch The NinePatch class permits drawing a bitmap in nine or more sections. 
NinePatchDrawable A resizeable bitmap, with stretchable areas that you define. 
NoClassDefFoundError Thrown when the VM is unable to locate a class which it has been asked to load. 
NoConnectionPendingException A NoConnectionPendingException is thrown if SocketChannel's finishConnect method is called before the SocketChannel's connect(java.net.SocketAddress) connect} method completed without error. 
NoConnectionReuseStrategy A strategy that never re-uses a connection. 
NoCopySpan This interface should be added to a span object that should not be copied into a new Spenned when performing a slice or copy operation on the original Spanned it was placed in. 
NoCopySpan.Concrete Convenience equivalent for when you would just want a new Object() for a span but want it to be no-copy. 
Node The Node interface is the primary datatype for the entire Document Object Model. 
NodeChangeEvent This is the event class to indicate that one child of the preference node has been added or deleted. 
NodeChangeListener This interface is used to handle preference node change events. 
NodeList The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. 
NoHttpResponseException

Signals that the target server failed to respond with a valid HTTP response. 

NoiseSuppressor Noise Suppressor (NS). 
NonNull Denotes that a parameter, field or method return value can never be null. 
NonReadableChannelException A NonReadableChannelException is thrown when attempting to read from a channel that is not open for reading. 
NonRepeatableRequestException Signals failure to retry the request due to non-repeatable request entity. 
NonWritableChannelException A NonWritableChannelException is thrown when attempting to write to a channel that is not open for writing. 
Normalizer Provides normalization functions according to Unicode Standard Annex #15: Unicode Normalization Forms
Normalizer.Form The normalization forms supported by the Normalizer. 
NoRouteToHostException The NoRouteToHostException will be thrown while attempting to connect to a remote host but the host cannot be reached for instance because of a badly configured router or a blocking firewall. 
NoSuchAlgorithmException NoSuchAlgorithmException indicates that a requested algorithm could not be found. 
NoSuchElementException Thrown when trying to retrieve an element past the end of an Enumeration or Iterator. 
NoSuchFieldError Thrown when the VM notices that a program tries to reference, on a class or object, a field that does not exist. 
NoSuchFieldException Thrown when the VM notices that a program tries to reference, on a class or object, a field that does not exist. 
NoSuchMethodError Thrown when the VM notices that a program tries to reference, on a class or object, a method that does not exist. 
NoSuchMethodException Thrown when the VM notices that a program tries to reference, on a class or object, a method that does not exist. 
NoSuchPaddingException The exception that is thrown when the requested padding mechanism is not supported. 
NoSuchPropertyException Thrown when code requests a Property on a class that does not expose the appropriate method or field. 
NoSuchProviderException NoSuchProviderException indicates that a requested security provider could not be found. 
NotActiveException Signals that a serialization-related method has been invoked in the wrong place. 
Notation This interface represents a notation declared in the DTD. 
Notification A class that represents how a persistent notification is to be presented to the user using the NotificationManager
Notification.Action Structure to encapsulate a named action that can be shown as part of this notification. 
Notification.Action.Builder Builder class for Notification.Action objects. 
Notification.Action.Extender Extender interface for use with extend(Notification.Action.Extender)
Notification.Action.WearableExtender Wearable extender for notification actions. 
Notification.BigPictureStyle Helper class for generating large-format notifications that include a large image attachment. 
Notification.BigTextStyle Helper class for generating large-format notifications that include a lot of text. 
Notification.Builder Builder class for Notification objects. 
Notification.Extender Extender interface for use with extend(Notification.Action.Extender)
Notification.InboxStyle Helper class for generating large-format notifications that include a list of (up to 5) strings. 
Notification.MediaStyle Notification style for media playback notifications. 
Notification.Style An object that can apply a rich notification style to a Notification.Builder object. 
Notification.WearableExtender Helper class to add wearable extensions to notifications. 
NotificationCompat Helper for accessing features in Notification introduced after API level 4 in a backwards compatible fashion. 
NotificationCompat.Action Structure to encapsulate a named action that can be shown as part of this notification. 
NotificationCompat.Action.Builder Builder class for NotificationCompat.Action objects. 
NotificationCompat.Action.Extender Extender interface for use with extend(NotificationCompat.Extender)
NotificationCompat.Action.WearableExtender Wearable extender for notification actions. 
NotificationCompat.BigPictureStyle Helper class for generating large-format notifications that include a large image attachment.