Package Index

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.

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 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.

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 framework API classes for accessing a variety of location 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 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 is deprecated since API level 31. Please refer to the migration guide for alternatives.

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).

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 a standard OpenGL interface.