Android Studio

Package Index

These are the API packages. See all API classes.

android Contains resource classes used by applications included in the platform and defines application permissions for system features. android.accessibilityservice The classes in this package are used for development of accessibility service that provide alternative or augmented feedback to the user. android.accounts android.adservices android.adservices.adid android.adservices.adselection android.adservices.appsetid android.adservices.common android.adservices.customaudience android.adservices.exceptions android.adservices.measurement android.adservices.ondevicepersonalization android.adservices.signals android.adservices.topics android.animation

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.

android.annotation android.app Contains high-level classes encapsulating the overall Android application model. android.app.admin

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.

android.app.appfunctions Android App Functions provides APIs for applications to expose functionality to the system for cross-app orchestration, and for system-privileged agents to discover and execute this functionality. android.app.appsearch android.app.appsearch.exceptions android.app.appsearch.observer android.app.appsearch.util android.app.assist android.app.backup

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.

android.app.blob android.app.jank android.app.job android.app.people android.app.permissionui android.app.privatecompute android.app.role android.app.sdksandbox android.app.sdksandbox.sdkprovider android.app.slice android.app.usage android.app.voiceinteraction android.app.wallpaper android.appwidget

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.

android.bluetooth android.bluetooth.le android.companion android.companion.virtual android.content Contains classes for accessing and publishing data on a device. android.content.om android.content.pm Contains classes for accessing information about an application package, including information about its activities, permissions, services, signatures, and providers. android.content.pm.verify.domain android.content.pm.webapp android.content.res

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.

android.content.res.loader android.credentials android.crypto.hpke android.database Contains classes to explore data returned through a content provider. android.database.sqlite Contains the SQLite database management classes that an application would use to manage its own private database. android.devicelock android.drm Provides classes for managing DRM content and determining the capabilities of DRM plugins (agents). android.gesture Provides classes to create, recognize, load and save gestures. android.graphics Provides low level graphics tools such as canvases, color filters, points, and rectangles that let you handle drawing to the screen directly. android.graphics.drawable Provides classes to manage a variety of visual elements that are intended for display only, such as bitmaps and gradients. android.graphics.drawable.shapes Contains classes for drawing geometric shapes. android.graphics.fonts android.graphics.pdf Contains classes for manipulation of PDF content. android.graphics.pdf.component android.graphics.pdf.content android.graphics.pdf.models android.graphics.pdf.models.selection android.graphics.text android.hardware Provides support for hardware features, such as the camera and other sensors. android.hardware.biometrics android.hardware.camera2 The android.hardware.camera2 package provides an interface to individual camera devices connected to an Android device. android.hardware.camera2.params android.hardware.display android.hardware.input android.hardware.lights android.hardware.serial android.hardware.usb

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

For more information, see the USB guide.

android.health.connect android.health.connect.changelog android.health.connect.datatypes android.health.connect.datatypes.units android.icu.lang android.icu.math android.icu.number android.icu.text android.icu.util android.inputmethodservice Base classes for writing input methods (such as software keyboards). android.location android.location.altitude android.location.provider android.media Provides classes that manage various media interfaces in audio and video. android.media.audiofx Provides classes that manage audio effects implemented in the media framework. android.media.browse android.media.effect Provides classes that allow you to apply a variety of visual effects to images and videos. android.media.metrics android.media.midi Provides classes for sending and receiving messages using the standard MIDI event protocol over USB, Bluetooth LE, and virtual (inter-app) transports. android.media.projection android.media.quality android.media.session android.media.tv android.media.tv.ad android.media.tv.interactive android.mtp 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. android.net Classes that help with network access, beyond the normal java.net.* APIs. android.net.dns android.net.eap android.net.http android.net.ipsec.ike android.net.ipsec.ike.exceptions android.net.nsd android.net.rtp android.net.sip android.net.ssl android.net.vcn android.net.wifi Provides classes to manage Wi-Fi functionality on the device. android.net.wifi.aware Provides classes which allow applications to use Wi-Fi Aware to discover peers and create connections to them. android.net.wifi.hotspot2 android.net.wifi.hotspot2.omadm android.net.wifi.hotspot2.pps android.net.wifi.p2p Provides classes to create peer-to-peer (P2P) connections with Wi-Fi Direct. android.net.wifi.p2p.nsd android.net.wifi.rtt Provides classes which allow applications to use Wi-Fi RTT (IEEE 802.11mc) to measure distance to supporting Access Points and peer devices. android.nfc android.nfc.cardemulation android.nfc.tech android.opengl Provides an OpenGL ES static interface and utilities. android.os Provides basic operating system services, message passing, and inter-process communication on the device. android.os.ext android.os.flagging android.os.health The android.os.health package contains a set of classes to provide data to track the system resources of applications. android.os.storage Contains classes for the system storage service, which manages binary asset filesystems known as Opaque Binary Blobs (OBBs). android.os.storage.operations android.os.storage.operations.sources android.os.storage.operations.targets android.os.strictmode android.os.vibrator android.preference These classes are deprecated. android.print

Overview

Provides classes for implementing print support in applications and also contains all base classes and abstractions involved in printing. android.print.pdf android.printservice Provides classes for implementing print services. android.provider Provides convenience classes to access the content providers supplied by Android. android.ranging android.ranging.ble android.ranging.ble.cs android.ranging.ble.rssi android.ranging.oob android.ranging.raw android.ranging.uwb android.ranging.wifi.pd android.ranging.wifi.rtt android.renderscript Renderscript is deprecated since API level 31. Please refer to the migration guide for alternatives. android.sax A framework that makes it easy to write efficient and robust SAX handlers. android.se.omapi android.security Provides access to a few facilities of the Android security subsystems. android.security.advancedprotection android.security.identity android.security.keystore android.service.assist.classification android.service.autofill android.service.carrier android.service.chooser android.service.controls android.service.controls.actions android.service.controls.templates android.service.credentials android.service.dreams android.service.media android.service.messaging android.service.notification android.service.persistentdata android.service.quickaccesswallet android.service.quicksettings android.service.restrictions android.service.settings.preferences android.service.textservice Provides classes that allow you to create spell checkers in a manner similar to the input method framework (for IMEs). android.service.voice android.service.vr android.service.wallpaper android.speech android.speech.tts android.system android.telecom The Android Telecom framework is responsible for managing calls on an Android device. android.telephony Provides APIs for monitoring the basic phone information, such as the network type and connection state, plus utilities for manipulating phone number strings. android.telephony.cdma Provides APIs for utilizing CDMA-specific telephony features. android.telephony.data android.telephony.emergency android.telephony.euicc android.telephony.gsm Provides APIs for utilizing GSM-specific telephony features, such as text/data/PDU SMS messages. android.telephony.ims android.telephony.ims.feature android.telephony.ims.stub android.telephony.mbms android.telephony.satellite android.test

A framework for writing Android test cases and suites.

For more information, see the Testing developer guide.

android.test.mock

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

For more information, see the Testing guide.

android.test.suitebuilder Utility classes supporting the test runner classes. android.test.suitebuilder.annotation Utility classes supporting the test runner classes. android.text Provides classes used to render or track text and text spans on the screen. android.text.format This package contains alternative classes for some text formatting classes defined in java.util and java.text. android.text.method Provides classes that monitor or modify keypad input. android.text.style Provides classes used to view or change the style of a span of text in a View object. android.text.util Utilities for converting identifiable text strings into clickable links and creating RFC 822-type message (SMTP) tokens. android.transition The classes in this package enable "scenes & transitions" functionality for view hiearchies. android.util Provides common utility methods such as date/time manipulation, base64 encoders and decoders, string and number conversion methods, and XML utilities. android.util.proto Provides utility classes to export protocol buffers from the system. android.view Provides classes that expose basic user interface classes that handle screen layout and interaction with the user. android.view.accessibility 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. android.view.animation Provides classes that handle tweened animations. android.view.autofill android.view.contentcapture android.view.displayhash android.view.inputmethod Framework classes for interaction between views and input methods (such as soft keyboards). android.view.inspector android.view.textclassifier android.view.textservice android.view.translation android.webkit Provides tools for browsing the web. android.widget The widget package contains (mostly visual) UI elements to use on your Application screen. android.widget.inline android.widget.photopicker android.window dalvik.annotation dalvik.annotation.optimization dalvik.bytecode dalvik.system java.awt.font java.beans java.io Provides for system input and output through data streams, serialization and the file system. java.lang Provides classes that are fundamental to the design of the Java programming language. java.lang.annotation Provides library support for the Java programming language annotation facility. java.lang.invoke java.lang.ref Provides reference-object classes, which support a limited degree of interaction with the garbage collector. java.lang.reflect Provides classes and interfaces for obtaining reflective information about classes and objects. java.lang.runtime The java.lang.runtime package provides low-level runtime support for the Java language. java.math java.net Provides the classes for implementing networking applications. java.nio Defines buffers, which are containers for data, and provides an overview of the other NIO packages. java.nio.channels Defines channels, which represent connections to entities that are capable of performing I/O operations, such as files and sockets; defines selectors, for multiplexed, non-blocking I/O operations. java.nio.channels.spi Service-provider classes for the java.nio.channels package. java.nio.charset Defines charsets, decoders, and encoders, for translating between bytes and Unicode characters. java.nio.charset.spi Service-provider classes for the java.nio.charset package. java.nio.file java.nio.file.attribute java.nio.file.spi java.security Provides the classes and interfaces for the security framework. java.security.acl The classes and interfaces in this package have been superseded by classes in the java.security package. java.security.cert Provides classes and interfaces for parsing and managing certificates, certificate revocation lists (CRLs), and certification paths. java.security.interfaces Provides interfaces for generating RSA (Rivest, Shamir and Adleman AsymmetricCipher algorithm) keys as defined in the RSA Laboratory Technical Note PKCS#1, and DSA (Digital Signature Algorithm) keys as defined in NIST's FIPS-186. java.security.spec Provides classes and interfaces for key specifications and algorithm parameter specifications. java.sql Provides the API for accessing and processing data stored in a data source (usually a relational database) using the JavaTM programming language. java.text Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages. java.time The main API for dates, times, instants, and durations. java.time.chrono Generic API for calendar systems other than the default ISO. java.time.format Provides classes to print and parse dates and times. java.time.temporal Access to date and time using fields and units, and date time adjusters. java.time.zone Support for time-zones and their rules. java.util Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes. java.util.concurrent Utility classes commonly useful in concurrent programming. java.util.concurrent.atomic A small toolkit of classes that support lock-free thread-safe programming on single variables. java.util.concurrent.locks Interfaces and classes providing a framework for locking and waiting for conditions that is distinct from built-in synchronization and monitors. java.util.function Functional interfaces provide target types for lambda expressions and method references. java.util.jar Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file. java.util.logging Provides the classes and interfaces of the Java 2 platform's core logging facilities. java.util.prefs This package allows applications to store and retrieve user and system preference and configuration data. java.util.random This package contains classes and interfaces that support a generic API for random number generation. java.util.regex Classes for matching character sequences against patterns specified by regular expressions. java.util.stream Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections. java.util.zip Provides classes for reading and writing the standard ZIP and GZIP file formats. javax.annotation.processing javax.crypto Provides the classes and interfaces for cryptographic operations. javax.crypto.interfaces Provides interfaces for Diffie-Hellman keys as defined in RSA Laboratories' PKCS #3. javax.crypto.spec Provides classes and interfaces for key specifications and algorithm parameter specifications. javax.microedition.khronos.egl javax.microedition.khronos.opengles

Provides a standard OpenGL interface. javax.net Provides classes for networking applications. javax.net.ssl Provides classes for the secure socket package. javax.security.auth This package provides a framework for authentication and authorization. javax.security.auth.callback This package provides the classes necessary for services to interact with applications in order to retrieve information (authentication data including usernames or passwords, for example) or to display information (error and warning messages, for example). javax.security.auth.login This package provides a pluggable authentication framework. javax.security.auth.x500 This package contains the classes that should be used to store X500 Principal and X500 Private Credentials in a Subject. javax.security.cert Provides classes for public key certificates. javax.sql Provides the API for server side data source access and processing from the JavaTM programming language. javax.xml javax.xml.datatype javax.xml.namespace javax.xml.parsers javax.xml.transform javax.xml.transform.dom javax.xml.transform.sax javax.xml.transform.stream javax.xml.validation javax.xml.xpath org.apache.http.conn org.apache.http.conn.scheme org.apache.http.conn.ssl TLS/SSL specific parts of the HttpConn API. org.apache.http.params org.json org.w3c.dom org.w3c.dom.ls org.xml.sax org.xml.sax.ext org.xml.sax.helpers org.xmlpull.v1 org.xmlpull.v1.sax2