Package Index - Android SDK

These are the Android APIs.

android Contains the resource classes used by standard Android applications. 
android.accessibilityservice  
android.accounts  
android.app

High-level classes encapsulating the overall Android application model. 

android.appwidget

Android allows applications to publish views to be embedded in other applications. These views are called widgets, and are published by "AppWidget providers." The component that can contain widgets is called a "AppWidget host."

For more information, see the AppWidgets documentation in the Dev Guide.

 
android.bluetooth Provides classes that manage Bluetooth functionality, such as scanning for devices, connecting with devices, and managing data transfer between devices. 
android.content

Contains classes for accessing and publishing data on the device. 

android.content.pm Contains classes for accessing information about an application package, including information about its activities, permissions, services, signatures, and providers. 
android.content.res 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. 
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.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.hardware Provides support for hardware devices that may not be present on every Android device. 
android.inputmethodservice Base classes for writing input methods. 
android.location

Classes defining Android location-based and related services. 

android.media Provides classes that manage various media interfaces in audio and video. 
android.net Classes that help with network access, beyond the normal java.net.* APIs. 
android.net.http  
android.net.wifi Provides classes to manage Wi-Fi functionality on the device. 
android.opengl Provides OpenGL utilities. 
android.os Provides basic operating system services, message passing, and inter-process communication on the device. 
android.preference Provides classes that manage application preferences and implement the preferences UI. 
android.provider Provides convenience classes to access the content providers supplied by Android. 
android.sax A framework that makes it easy to write efficient and robust SAX handlers. 
android.service.wallpaper  
android.speech  
android.speech.tts  
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.gsm Provides APIs for utilizing GSM-specific telephony features, such as text/data/PDU SMS messages. 
android.test A framework for writing Android test cases and suites. 
android.test.mock Utility classes providing stubs or mocks of various Android framework building blocks. 
android.test.suitebuilder 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  
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.util Provides common utility methods such as date/time manipulation, base64 encoders and decoders, string and number conversion methods, and XML utilities. 
android.view Provides classes that expose basic user interface classes that handle screen layout and interaction with the user. 
android.view.accessibility  
android.view.animation

Provides classes that handle tweened animations. 

android.view.inputmethod Framework classes for interaction between views and input methods (such as soft keyboards). 
android.webkit Provides tools for browsing the web. 
android.widget The widget package contains (mostly visual) UI elements to use on your Application screen. 
dalvik.bytecode

Provides classes surrounding the Dalvik bytecode. 

dalvik.system

Provides utility and system information classes specific to the Dalvik VM. 

java.awt.font  
java.beans  
java.io

Provides input and output facilities by means of streaming, file system access and serialization. 

java.lang

Provides core classes of the Android environment. 

java.lang.annotation

Defines interfaces and exceptions necessary for annotation support. 

java.lang.ref  
java.lang.reflect  
java.math Provides arbitrary-precision integers and decimals. 
java.net

Provides networking-related functionality, such as streaming and datagram sockets, handling of Internet addresses, and dealing with HTTP requests. 

java.nio

Provides buffers that help handling data. 

java.nio.channels

Channels provide a way to connect to sources of data such as files, sockets or other structures that allow input and/or output of data. 

java.nio.channels.spi

Service-provider classes for nio channels. 

java.nio.charset

This package provides translation services between bytes and different character sets. 

java.nio.charset.spi

Service-provider class for nio charset. 

java.security

This package provides all the classes and interfaces that constitute the Java security framework. 

java.security.acl

This package provides the classes and the interfaces needed to build Access Control Lists. 

java.security.cert

This package provides all the classes and all the interfaces needed to generate, administer and verify X.509 certificates. 

java.security.interfaces

This package provides the interfaces needed to generate: (1) Keys for the RSA asymmetric encryption algorithm using the PKCS#1 standard; (2) Keys for the Digital Signature Algorithm (DSA) specified by FIPS-186; (3) Keys for a generic Elliptic Curve asymmetric encryption algorithm. 

java.security.spec

This package provides the classes and interfaces needed to specify keys and parameters for encryption and signing algorithms. 

java.sql

Provides a standard interface for accessing SQL-based databases. 

java.text

The java.text package allows to uncouple the text in an application from natural languages. 

java.util

Provides an extensive set of 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.jar

The java.jar package gives access to reading and writing a Java archive, or JAR, files. 

java.util.logging

This package allows to add logging to any application. 

java.util.prefs

This package provides a preferences mechanism, that is, a means of writing configuration data (key/value pairs) to a persistent data store and retrieving it from there. 

java.util.regex Provides an implementation of regular expressions, which is useful for matching, searching, and replacing strings based on patterns. 
java.util.zip

This package contains classes for compressing and decompressing data in ZIP and GZIP file formats. 

javax.crypto

This package provides the classes and interfaces for cryptographic applications implementing algorithms for encryption, decryption, or key agreement. 

javax.crypto.interfaces

This package provides the interfaces needed to implement the Diffie-Hellman (DH) key agreement's algorithm as specified by PKCS#3. 

javax.crypto.spec

This package provides the classes and interfaces needed to specify keys and parameter for encryption. 

javax.microedition.khronos.egl  
javax.microedition.khronos.opengles  
javax.net

This package provides factory classes to create sockets and server-sockets. 

javax.net.ssl

This package provides all the classes and interfaces needed to implemenet and program the Secure Socket abstraction based on the SSL protocol SSSLv3.0 or TLSv1.2. 

javax.security.auth

This package provides the classes and interfaces needed to implemenet and program different methods of users' authentification and role based users' authorization. 

javax.security.auth.callback

This package provides classes and interfaces needed to interact with the application in order to execute the authentification and authorization processes. 

javax.security.auth.login

This package provides a pluggable and stackable authentication system based on ideas and concepts from the Unix-PAM module. 

javax.security.auth.x500

This package provides classes needed to store X.500 principals and their credentials. 

javax.security.cert

This package is provided only for compatibility reasons. 

javax.sql

Provides extensions to the standard interface for accessing SQL-based databases. 

javax.xml

Provides a utility class with useful XML constants. 

javax.xml.parsers

Provides facilities for parsing XML documents and building Document Object Model (DOM) trees from them. 

junit.framework The junit test framework. 
junit.runner Utility classes supporting the junit test framework. 
org.apache.http The core interfaces and classes of the HTTP components. 
org.apache.http.auth The API for client-side HTTP authentication against a server, commonly referred to as HttpAuth
org.apache.http.auth.params Parameters for configuring HttpAuth
org.apache.http.client The API for client-side HTTP communication and entry point to the HttpClient module. 
org.apache.http.client.entity  
org.apache.http.client.methods Request implementations for the various HTTP methods like GET and POST. 
org.apache.http.client.params Parameters for configuring HttpClient
org.apache.http.client.protocol Additional request and response interceptors. 
org.apache.http.client.utils Helpers and utility classes for HttpClient
org.apache.http.conn The client-side connection management and handling API at the heart of what is referred to as HttpConn
org.apache.http.conn.params Parameters for configuring HttpConn
org.apache.http.conn.routing The client-side route representation and tracking API, part of HttpConn
org.apache.http.conn.scheme  
org.apache.http.conn.ssl TLS/SSL specific parts of the HttpConn API. 
org.apache.http.conn.util  
org.apache.http.cookie The API for client-side state management via cookies, commonly referred to as HttpCookie
org.apache.http.cookie.params Parameters for configuring HttpCookie
org.apache.http.entity Representations for HTTP message entities. 
org.apache.http.impl Default implementations for interfaces in org.apache.http
org.apache.http.impl.auth  
org.apache.http.impl.client  
org.apache.http.impl.conn  
org.apache.http.impl.conn.tsccm The implementation of a thread-safe client connection manager. 
org.apache.http.impl.cookie  
org.apache.http.impl.entity Default implementations for interfaces in org.apache.http.entity
org.apache.http.impl.io Default implementations for interfaces in org.apache.http.io
org.apache.http.io The transport layer abstraction of the HTTP components. 
org.apache.http.message A selection of HTTP message implementations. 
org.apache.http.params The parameterization framework for HTTP components. 
org.apache.http.protocol HTTP protocol execution framework. 
org.apache.http.util Mostly utility classes with static helper methods for various purposes. 
org.json  
org.w3c.dom

Provides the official W3C Java bindings for the Document Object Model, level 2 core. 

org.xml.sax

This package provides the core SAX APIs. 

org.xml.sax.ext

This package contains interfaces to SAX2 facilities that conformant SAX drivers won't necessarily support. 

org.xml.sax.helpers

This package contains "helper" classes, including support for bootstrapping SAX-based applications. 

org.xmlpull.v1  
org.xmlpull.v1.sax2