| AccessibilityService |
Accessibility services should only be used to assist users with disabilities in using Android devices and apps. |
| AccountAuthenticatorActivity |
Base class for implementing an Activity that is used to help implement an AbstractAccountAuthenticator. |
| Activity |
An activity is a single, focused thing that the user can do. |
| ActivityGroup |
A screen that contains and runs multiple embedded activities. |
| AliasActivity |
Stub activity that launches another activity (and then finishes itself) based on information in its component's manifest meta-data. |
| AppFunctionService |
Abstract base class to provide app functions to the system. |
| Application |
Base class for maintaining global application state. |
| AutofillService |
An AutofillService is a service used to automatically fill the contents of the screen on behalf of a given user - for more information about autofill, read Autofill Framework. |
| CallRedirectionService |
This service can be implemented to interact between Telecom and its implementor for making outgoing call with optional redirection/cancellation purposes. |
| CallScreeningService |
This service can be implemented by the default dialer (see TelecomManager.getDefaultDialerPackage()) or a third party app to allow or disallow incoming calls before they are shown to a user. |
| CameraPrewarmService |
Extend this class to implement a camera prewarm service. |
| CarrierMessagingClientService |
If the default SMS app has a service that extends this class, the system always tries to bind it so that the process is always running, which allows the app to have a persistent connection to the server. |
| CarrierMessagingService |
A service that receives calls from the system when new SMS and MMS are sent or received. |
| CarrierService |
A service that exposes carrier-specific functionality to the system. |
| ChooserTargetService |
A service that receives calls from the system when the user is asked to choose a target for an intent explicitly by another app. |
| CloudMediaProvider |
Base class for a cloud media provider. |
| CompanionDeviceService |
A service that receives calls from the system with device events. |
| ConditionProviderService |
A service that provides conditions about boolean state. |
| ConnectionService |
An abstract service that should be implemented by any apps which either: Can make phone calls (VoIP or otherwise) and want those calls to be integrated into the built-in phone app. Referred to as a system managed ConnectionService. Are a standalone calling app and don't want their calls to be integrated into the built-in phone app. Referred to as a self managed ConnectionService. Once implemented, the needs to take the following steps so that Telecom will bind to it: |
| ContentProvider |
Content providers are one of the primary building blocks of Android applications, providing content to applications. |
| ControlsProviderService |
Service implementation allowing applications to contribute controls to the System UI. |
| CredentialProviderService |
Service to be extended by credential providers, in order to return user credentials to the framework. |
| DeviceAdminService |
Base class for a service that device owner/profile owners can optionally have. |
| DialogFragment |
A fragment that displays a dialog window, floating on top of its activity's window. |
| DocumentsProvider |
Base class for a document provider. |
| DreamService |
Extend this class to implement a custom dream (available to the user as a "Daydream"). |
| 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. |
| Fragment |
A Fragment is a piece of an application's user interface or behavior that can be placed in an Activity. |
| HostApduService |
HostApduService is a convenience Service class that can be extended to emulate an NFC card inside an Android service component. |
| HostNfcFService |
HostNfcFService is a convenience Service class that can be extended to emulate an NFC-F card inside an Android service component. |
| InCallService |
This service is implemented by an app that wishes to provide functionality for managing phone calls. |
| InputMethodService |
InputMethodService provides a standard implementation of an InputMethod, which final implementations can derive from and customize. |
| IntentService |
IntentService is an extension of the Service component class that handles asynchronous requests (expressed as Intents) on demand. |
| IsolatedService |
Base class for services that are started by ODP on a call to OnDevicePersonalizationManager#execute(ComponentName, PersistableBundle, java.util.concurrent.Executor, OutcomeReceiver) and run in an isolated process. |
| JobService |
Entry point for the callback from the android.app.job.JobScheduler. |
| LauncherActivity |
Displays a list of all activities which can be performed for a given intent. |
| 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. |
| 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. |
| MediaBrowserService |
Base class for media browser services. |
| MediaRoute2ProviderService |
Base class for media route provider services. |
| MediaSession2Service |
This API is not generally intended for third party application developers. |
| MidiDeviceService |
A service that implements a virtual MIDI device. |
| MidiUmpDeviceService |
A service that implements a virtual MIDI device for Universal MIDI Packets (UMP). |
| MockApplication |
A mock android.app.Application class. |
| MockContentProvider |
Mock implementation of ContentProvider. |
| NativeActivity |
Convenience for implementing an activity that will be implemented purely in native code. |
| NotificationListenerService |
A service that receives calls from the system when new notifications are posted or removed, or their ranking changed. |
| OffHostApduService |
OffHostApduService is a convenience Service class that can be extended to describe one or more NFC applications that are residing off-host, for example on an embedded secure element or a UICC. |
| PreferenceActivity |
This is the base class for an activity to show a hierarchy of preferences to the user. |
| PreferenceFragment |
Shows a hierarchy of Preference objects as lists. |
| PrintService |
This is the base class for implementing print services. |
| QuickAccessWalletService |
A QuickAccessWalletService provides a list of WalletCards shown in the Quick Access Wallet. |
| RecognitionService |
This class provides a base class for recognition service implementations. |
| RemoteViewsService |
The service to be connected to for a remote adapter to request RemoteViews. |
| SearchRecentSuggestionsProvider |
This superclass can be used to create a simple search suggestions provider for your application. |
| Service |
A Service is an application component representing either an application's desire to perform a longer-running operation while not interacting with the user or to supply functionality for other applications to use. |
| SettingInjectorService |
Dynamically specifies the summary (subtitle) and enabled status of a preference injected into the list of app settings displayed by the system settings app |
| SettingsPreferenceService |
Base class for a service that exposes its settings preferences to external access. |
| SliceProvider |
A SliceProvider allows an app to provide content to be displayed in system spaces. |
| SpellCheckerService |
SpellCheckerService provides an abstract base class for a spell checker. |
| TabActivity |
For apps developing against android.os.Build.VERSION_CODES#HONEYCOMB or later, tabs are typically presented in the UI using the new ActionBar.newTab() and related APIs for placing tabs within their action bar area. |
| TextToSpeechService |
Abstract base class for TTS engine implementations. |
| TileService |
A TileService provides the user a tile that can be added to Quick Settings. |
| TvAdService |
The TvAdService class represents a TV client-side advertisement service. |
| TvInputService |
The TvInputService class represents a TV input or source such as HDMI or built-in tuner which provides pass-through video or broadcast TV programs. |
| TvInteractiveAppService |
A TV interactive application service is a service that provides runtime environment and runs TV interactive applications. |
| VisualVoicemailService |
This service is implemented by dialer apps that wishes to handle OMTP or similar visual voicemails. |
| VoiceInteractionService |
Top-level service of the current global voice interactor, which is providing support for hotwording, the back-end of a android.app.VoiceInteractor, etc. |
| VoiceInteractionSession |
An active voice interaction session, providing a facility for the implementation to interact with the user in the voice interaction layer. |
| VoiceInteractionSessionService |
An active voice interaction session, initiated by a VoiceInteractionService. |
| VpnService |
VpnService is a base class for applications to extend and build their own VPN solutions. |
| VrListenerService |
A service that is bound from the system while running in virtual reality (VR) mode. |
| WallpaperService |
A wallpaper service is responsible for showing a live wallpaper behind applications that would like to sit on top of it. |
| WebViewFragment |
A fragment that displays a WebView. |