Package Index | Android Developers

532 captures

27 May 2018 - 02 Oct 2026

Jan	FEB	Mar
	26
2023	2024	2025

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The Wayback Machine - http://web.archive.org/web/20240226145229/https://developer.android.com/reference/packages

Essentials

Modern Android
Quickly bring your app to life with less code, using a modern declarative approach to UI, and the simplicity of Kotlin.
Explore Modern Android
Adopt Compose for teams

Get started
Start by creating your first app. Go deeper with our training courses or explore app development on your own.
Hello world
Training courses
Tutorials
Kotlin for Android
Monetization with Play ↗️

Extend by device
Build apps that give your users seamless experiences from phones to tablets, watches, and more.
Large screens (e.g. Tablets)
Wear OS
Android for Cars
Android TV
ChromeOS
Cross-device SDK

Build by category
Learn to build for your use case by following Google's prescriptive and opinionated guidance.
Games
Media apps
Health & Fitness
Enterprise apps

Get the latest
Stay in touch with the latest releases throughout the year, join our preview programs, and give us your feedback.
Platform releases
Android Studio preview
Jetpack & Compose libraries
Wear OS preview
Privacy Sandbox

Design & Plan

Kits & more
Get one of our Figma kits for Android, Material Design, or Wear OS, and start designing your app's UI today.
Go to Android & Material kits
Go to Wear OS kits

UI Design
Design a beautiful user interface using Android best practices.
Design for Android
Mobile
Large screens (e.g. Tablets)
Wear OS
Android TV

Architecture
Design robust, testable, and maintainable app logic and services.
Introduction
Libraries
Navigation
Modularization
Testing

Quality
Plan for app quality and align with Play store guidelines.
Overview
Core value
User experience
Technical quality
Privacy & security

Build for Billions
Create the best experience for entry-level devices
Overview
About new markets
Android (Go edition)

Develop

Android Studio
Use the IDE and tools that make Android development easy.
Get Android Studio
Start coding

Core areas
Get the docs for the features you need.
User interfaces
Permissions
Background work
Data and files
User identity
Camera
All core areas ⤵️

Tools and workflow
Use the IDE to write and build your app, or create your own pipeline.
Write and debug code
Build projects
Test your app
Performance
Command-line tools
Gradle plugin API

Devices
Write code to work with particular form factors.
Large screens (e.g. Tablets)
Wear OS
Android for Cars
Android TV
ChromeOS

Libraries
Browse API reference documentation with all the details.
Android platform
Jetpack libraries
Compose libraries
Google Play services ↗️
Google Play SDK index ↗️

Google Play Community

English
Español – América Latina
Indonesia
Português – Brasil
中文 – 简体
日本語
한국어

Android Studio

Sign in

Develop

Guides UI Guide Reference Samples

Essentials
- More
Design & Plan
- More
Develop
- More
- Guides
- UI Guide
- Reference
- Samples
Google Play
Community
Android Studio

Android API Reference
Overview
Android Platform
Packages