Complete a codelab or dive deep into a training course for an overview of key Android development topics.
Follow this introductory codelab for step-by-step instructions about how to create an Android Hello World app.
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Develop a scalable, modularized, testable app from scratch. This won't be a Hello World app. We'll concentrate on building an app architecture that will enable your app to grow.
Build an app that works on multiple Android devices, including phones, tablets, foldables, and ChromeOS devices. This codelab shows you how to update an app to adapt to different display sizes and configurations.
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Courses

Take the full course to learn the basics of creating apps with Jetpack Compose, Android's modern toolkit for developing user interfaces.

As you create a series of apps, you’ll learn the basics of the Kotlin programming language and the fundamentals of app development.

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Learn

Go deep by exploring other training resources, such as learning pathways for more-advanced topics, including Compose, app architecture, and accessibility.

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Assemble your toolkit

Jetpack Compose simplifies and accelerates UI development on Android. Write less code and use powerful tools and intuitive Kotlin APIs.
Use Compose
More than 95% of the the top 1,000 Android apps use Kotlin to boost productivity, developer satisfaction, and code safety.
Learn more
Check out the Android suite of libraries, which implement our best practices and reduce boilerplate code.
Get started
Android Studio is the official IDE for Android app development, featuring Compose design tools, flexible build system, and Android Emulator.
Android Studio
Android handles backwards compatibility, so you can target the latest SDK version, use the latest technologies, and run consistently across Android versions and devices.
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Architecture, testing patterns, and guidance help you build solid, scalable apps.
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App quality matters

Build high-quality apps that provide a seamless and consistent user experience. Learn how to ensure your apps work well on all form factors, including phones, tablets, foldables, ChromeOS devices, parked car displays, and even 2D XR.
Guidelines Guides
Good Great
Core value
Fun, useful, or both
User experience
Easy to use
Delightful to use
Technical quality
Work well on users' devices
Make the most of users' devices
Privacy and security
Safe
Designed for safety
Good
Core value
Fun, useful, or both
User experience
Easy to use
Technical quality
Works well on users’ devices
Privacy and security
Safe
Great
Core value
Fun, useful, or both
User experience
Delightful to use
Technical quality
Makes the most of users' devices
Privacy and security
Designed for safety
If you learn best by reading code, we have a wide range of sample apps that you can check out and learn from.

Now in Android is an Android app built with Kotlin and Jetpack Compose. Now in Android is designed to serve as a reference for Android developers that models best practices for design and development.

This repository contains a set of individual Android Studio projects to help you learn about Compose in Android. Each sample demonstrates different use cases, complexity levels and APIs.

These samples showcase different architectural approaches to developing Android apps. In its different branches you'll find the same app (a to-do list app) implemented with small differences.

Browse all the samples