Contains resource classes used by applications included in the platform and defines application permissions for system features.

The classes in this package are used for development of accessibility service that provide alternative or augmented feedback to the user.

These classes provide functionality for the property animation system, which allows you to animate object properties of any type. int, float, and hexadecimal color values are supported by default. You can animate any other type by telling the system how to calculate the values for that given type with a custom TypeEvaluator.

For more information, see the Animation guide.

Contains high-level classes encapsulating the overall Android application model.

Provides device administration features at the system level, allowing you to create security-aware applications that are useful in enterprise settings, in which IT professionals require rich control over employee devices.

For more information, see the Device Administration guide.

Contains the backup and restore functionality available to applications. If a user wipes the data on their device or upgrades to a new Android-powered device, all applications that have enabled backup can restore the user's previous data when the application is reinstalled.

For more information, see the Data Backup guide.

Contains the components necessary to create "app widgets", which users can embed in other applications (such as the home screen) to quickly access application data and services without launching a new activity.

For more information, see the App Widgets guide.

Provides classes that manage Bluetooth functionality, such as scanning for devices, connecting with devices, and managing data transfer between devices. The Bluetooth API supports both "Classic Bluetooth" and Bluetooth Low Energy.

For more information about Classic Bluetooth, see the Bluetooth guide. For more information about Bluetooth Low Energy, see the Bluetooth Low Energy (BLE) guide.

Contains classes for accessing and publishing data on a device.

Contains classes for accessing information about an application package, including information about its activities, permissions, services, signatures, and providers.

Contains classes for accessing application resources, such as raw asset files, colors, drawables, media or other other files in the package, plus important device configuration details (orientation, input types, etc.) that affect how the application may behave.

For more information, see the Application Resources guide.

Contains components used when developing applications with data binding.

Provides classes for managing DRM content and determining the capabilities of DRM plugins (agents).

Provides classes to manage a variety of visual elements that are intended for display only, such as bitmaps and gradients.

Provides support for hardware features, such as the camera and other sensors.

The android.hardware.camera2 package provides an interface to individual camera devices connected to an Android device.

Provides support to communicate with USB hardware peripherals that are connected to Android-powered devices.

For more information, see the USB guide.

Contains the framework API classes that define Android location-based and related services.

Provides classes that allow you to apply a variety of visual effects to images and videos.

Provides classes for sending and receiving messages using the standard MIDI event protocol over USB, Bluetooth LE, and virtual (inter-app) transports.

Provides APIs that let you interact directly with connected cameras and other devices, using the PTP (Picture Transfer Protocol) subset of the MTP (Media Transfer Protocol) specification.

Provides APIs for RTP (Real-time Transport Protocol), allowing applications to manage on-demand or interactive data streaming.

Provides access to Session Initiation Protocol (SIP) functionality, such as making and answering VOIP calls using SIP.

For more information, see the Session Initiation Protocol developer guide.

Provides classes to manage Wi-Fi functionality on the device.

Provides classes to create peer-to-peer (P2P) connections with Wi-Fi Direct.

Provides access to Near Field Communication (NFC) functionality, allowing applications to read NDEF message in NFC tags. A "tag" may actually be another device that appears as a tag.

For more information, see the Near Field Communication guide.

These classes provide access to a tag technology's features, which vary by the type of tag that is scanned.

Provides an OpenGL ES static interface and utilities.

Contains classes for the system storage service, which manages binary asset filesystems known as Opaque Binary Blobs (OBBs).

Overview

Provides classes for implementing print support in applications and also contains all base classes and abstractions involved in printing.

Provides classes for implementing print services.

Provides convenience classes to access the content providers supplied by Android.

RenderScript provides support for high-performance computation across heterogeneous processors.

For more information, see the RenderScript developer guide.

Provides access to a few facilities of the Android security subsystems.

Provides classes that allow you to create spell checkers in a manner similar to the input method framework (for IMEs).

Support classes for building Leanback user experiences.

Support classes providing high level Leanback user interface building blocks: fragments and helpers.

Support classes providing low level Leanback user interface building blocks: widgets and helpers.

Contains APIs that control the routing of media channels and streams from the current device to external speakers and destination devices.

A framework for writing Android test cases and suites.

For more information, see the Testing developer guide.

Utility classes providing stubs or mocks of various Android framework building blocks.

For more information, see the Testing guide.

Provides classes used to render or track text and text spans on the screen.

Provides classes that monitor or modify keypad input.

Provides classes used to view or change the style of a span of text in a View object.

The classes in this package enable "scenes & transitions" functionality for view hiearchies.

The classes in this package are used to represent screen content and changes to it as well as APIs for querying the global accessibility state of the system.

Provides classes that handle tweened animations.

Provides tools for browsing the web.

The widget package contains (mostly visual) UI elements to use on your Application screen.

Provides the classes and interfaces of the JavaTM 2 platform's core logging facilities.

Provides a standard OpenGL interface.