Learn how to get started with Kotlin Multiplatform from two separate Android and iOS projects. In this codelab you will learn how to add a Kotlin Multiplatform (KMP) module to share code between Android and iOS apps. It covers setting up the project, adding the KMP module, linking it to the Android and iOS apps, and writing platform-specific code.

Learn how to share the database of your app with Room and Kotlin Multiplatform. This way you can share your most critical business logic with the iOS app preventing unwanted bugs or missing features while preserving the same functionality everywhere.

In this codelab, you’ll learn about the unique user experiences that are made possible by the XR form factor. Then, you’ll learn the fundamentals of how apps can be adapted to make the most of running on an Android XR headset by using the composables provided by the Jetpack Compose XR library.

In this codelab, you’ll build upon the foundations of Learn Android XR fundamentals: Part 1 - Modes and Spatial Panels by further spatializing an app’s UI with the use of orbiters and customizing its Full Space mode experience by setting an environment preference.

Learn how to create your first Android app.

Learn how to download and install Android Studio

In this codelab, you’ll learn how to create Wear OS watch faces using the Watch Face Format (WFF). This includes understanding the format itself, the structure of watch face packages and how to validate your watch face.

Learn how to manage keyboard focus in Compose

Learn how to add a simple Gemini API feature to an Android app with Vertex AI for Firebase.

In this codelab, you learn how to add Glance widgets to the SociaLite app.

In this codelab, you learn how to add predictive back animations to the SociaLite app.

Activity embedding enables activity-based apps to support two-pane layouts on large screens with no code refactoring. You add some dependencies, create an XML configuration file, implement an initializer, and make a few additions to the app manifest. Or, if you prefer working in code, you can make a few Jetpack API calls from the onCreate() method of the main activity. In this codelab, you will use both the XML and API development approaches to update an activity-based app to a list-detail, two-pane layout.

In this Codelab, you’ll build a health and fitness app that supports reading and writing to Health Connect.

Learn the basics of building Android apps with Jetpack Compose, the recommended UI toolkit for building Android apps

With the Ongoing Activity API in Wear, developers can engage users from the watch face as well as the app launcher with minimal amount of code and allow those users to jump back into the app for important activities with a simple tap.

Learn the core concepts of relational databases and learn to read and manipulate a database using SQL.

Google Pay API gives users the opportunity to pay everywhere, using the payment information stored in their Google Accounts. In this lab, you make use of Google Pay's client library for Android to improve the checkout experience of a simplified

Learn how to build a musical game with the Oboe library.

In this codelab, you’ll learn the fundamentals of accessibility testing using Espresso.

In this codelab, you learn how to test coroutines, ViewModel scoped coroutines, and Room, and implement end-to-end testing for your Kotlin Android app.

In this codelab you’ll learn to set up manual dependency injection, a service locator, and how to use fakes and mocks in your Android Kotlin apps. In doing so, you’ll learn how to test a repository and write fragment integration tests.

Learn the basics of testing your Android Kotlin apps. In this codelab you’ll learn to run tests, write basic tests, work with AndroidX Test, as well as test ViewModel and LiveData.

With the Android App Bundle and Google Play’s Dynamic Delivery, your app can download dynamic feature modules on demand to devices running Android 5.0 (API level 21) and higher. Your app simply needs to call APIs in the Play Core Library to download and install those modules as required, and the Google Play Store pushes only the code and resources needed for that module to the device. You can also use this API to download on demand modules for your instant app.

Calling all prototypers and motion designers! Are you sick of tweaking one value in your animation and having to wait minutes to compile and see your change? Ever want to hand someone a prototype, and let them try it with various options you can adjust on the fly? Do you get tingles when someone mentions “one-line solution”?

This codelab demonstrates how to show conversational notifications as Bubbles on Android 11.

Direct Share makes sharing content quicker and easier. In this codelab, you’ll build an app that is able to display a list of contacts in the system Intent chooser dialog so you can jump directly into the app to make the sharing process seamless.

Learn how to connect your users with each other even when no internet is available

In this codelab, you build a default (“demo”) and premium (“full”) version of the DiceRoller app using build variants.

In this codelab, you’ll migrate an Android app that uses Dagger as the Dependency Injection library to Hilt.

Learn how to implement common navigation requirements for Android apps. Navigation Components handle fragment transactions, up/back stack, navigation UI patterns like navigation drawers, deep links and more. You’ll also explore the type safe args plugin and the Navigation Editor in Android Studio.

In this codelab, you’ll build an Android app that uses Dagger to do Dependency Injection.

In this codelab you’ll learn how to use the Data Binding library. The Data Binding Library allows you to bind UI components in your layouts to data sources in your app using a declarative format rather than programmatically. You’ll learn to set it all up, use layout expressions, work with observable objects, and create custom Binding Adapters to reduce boilerplate to a minimum.

In this codelab, you’ll build a coroutine-based Android app that uses Architecture Components to fetch data from the network and a Room database.

In this codelab, you’ll build an Android app that uses Hilt to do Dependency Injection.

In this codelab, you’ll build a coroutine-based Android app that uses Architecture Components to fetch data from the network and a Room database.

In this codelab, you learn about the data layer in Android app architecture. You build repositories, data models, and data sources to read and write data to a local database and a network service.

In this codelab, you’ll learn all about the basics of Navigation in Compose.

In this codelab, you’ll learn how to use Android Studio’s Layout Editor to build your views using ConstraintLayout.

In this codelab, you integrate the Paging library into an app that shows a list. The Paging library helps you load and display pages of data from a larger dataset from local storage or over network.

Welcome to the Kotlin bootcamp for programmers training course.

In this codelab, you modify a sample app to incorporate the Paging Library, which reduces the app’s memory footprint.

In this codelab, you learn some of the advantages of using Kotlin, and you install the necessary tools (JDK+IDE).

In this codelab, you’ll learn how to use Android Studio 4.0+ C++ template

Learn how to register for the Android Sleep API to get the SleepSegmentEvents and SleepClassifyEvents.

In this codelab you will add biometric authentication to your app as part of your login process. You will not replace your current login process – users can still log in with their account password. Instead, you will augment your login process, giving users the convenience to not have to remember their password every time they open your app. The codelab shows how to ask users to opt-in and then how to store the server generated user token behind biometric authentication.

In this codelab, you’ll learn how to implement real-world designs with the composables and modifiers that Compose provides out of the box.

In this codelab, you’ll be making changes to an app to provide a better user experience when run on a managed device with a work profile.

In this codelab, you’ll learn how to convert your Java code to Kotlin

In this codelab you’ll build an Android app in Kotlin that uses Android Architecture Components (RoomDatabase, Entity, DAO, AndroidViewModel, LiveData) together with Kotlin coroutines. This sample app stores a list of words in a Room database and displays it in a RecyclerView. You will implement this app using the recommended Android architecture using these components.

In this codelab you build an app that uses Android Architecture Components (RoomDatabase, Entity, DAO, AndroidViewModel, LiveData) and implements the recommended architecture for these components. The sample app stores a list of words in a Room database and displays it in a RecyclerView.

In this codelab, you learn the fundamentals of the Car App Library. This library is used to build apps for Android Auto and Android Automotive OS, which can be used both while parked and driving. You learn how to reuse your implementation across both platforms and have it handle the hard stuff, like different screen configurations and input methods.

In this codelab, you’ll learn how to expose your data to watch face complications while keeping best practices for the platform in mind.

Learn why variables are useful in programming, as well as how to define and update variables in your Kotlin code.

Learn to enable drag and drop in compose using modifiers.

Learn the basics of Compose for TV and create two screens that are commonly available in TV apps.

In this codelab, you’ll learn how to create your own Tile for Wear OS. You’ll use Tiles Material Components, a library that makes it easier to build UI that conforms to Material design guidelines, and preview your tiles in Android Studio as you develop.

In this codelab, you’ll learn how to translate your Compose knowledge to wearables with the new Compose for Wear OS. By the end, you’ll have created both simple and advanced composables in an app for your wrist.

In this codelab you will learn how to use activity embedding’s newly added feature to improve app large screen experience. These features include pane expansion, overlay presentation, full screen dialog dim and activity stack pinning.

In this codelab, you’ll learn how to make your Compose app more accessible. See how to increase touch targets, add content descriptions, click labels, custom actions, and more.

In this codelab, you’ll learn how to migrate parts of a screen in the View system to Jetpack Compose.

This codelab shows how to add billing to an existing app. You will learn how to use the Google Play Billing Library in your project in a way that hides the nitty-gritty details from the rest of your app and engineering team.

In this codelab you will train a handwritten digit classifier model using TensorFlow, then convert it to TensorFlow Lite format and deploy it on an Android app.

In this codelab, modify a sample Unity project to take advantage of Play Asset Delivery for on-demand asset downloading from Google Play.

Learn how to develop your apps to support keyboard and pointing devices, such as mouse and trackpad, with Compose.

With the advent of Android 12L and the availability of new form factors (such as foldable devices) and display modes such as multi-window and multi-display, many assumptions regarding the relationship between the camera output and the surface have been challenged.

In this codelab, you’ll learn how to build and test great parked experiences for Android Automotive OS devices. You learn how to make the most of the wide variety of screens found in cars and how to let users control playback of content in various scenarios unique to cars using standard Android mechanisms.

Jetpack Compose for Android Developers

Android Basics with Compose and Firebase

Learn how to run an app on the Android Emulator.

In this codelab, you learn how to migrate parts of a screen in the View system to Jetpack Compose.

Learn how to adapt your app for large screens by implementing one of the canonical layout patterns.

Learn how to build a simple app with composable functions.

Learn how to build a simple app with composable functions.

Learn how to test the ViewModel to verify the correctness, functional behavior, and usability of your app.

The WorkManager API for Android makes working in the background simple. WorkManager can create tasks that are queryable, reusable, and chainable. WorkManager is the recommended task scheduler on Android. This codelab will teach you the ins and outs of WorkManager: everything from writing a simple job to more complex chained jobs.

Learn how to adapt your app for large screens with adaptive navigation ui patterns.

In this codelab, you’ll learn the fundamentals of Android Accessibility. You’ll work through exercises to learn how to use the Android platform to build apps that can be used more easily by a wider set of people with different accessibility needs.

Learn to use Kotlin coroutines inside an Android app and how to test coroutines.

Learn how to use Room in your Android Kotlin apps. Room is a persistence database library that’s part of Android Jetpack. Room is an abstraction layer over SQLite. Room provides convenient APIs to set up, configure, and query the database.

Learn how to use Room to read and update data in your Android Kotlin apps. Room is a database library that’s part of Android Jetpack. Room takes care of many of the chores of setting up and configuring a database, and makes it possible for your app to interact with the database using ordinary function calls.

Learn to enable drag and drop for your views along with use of DragHelper and DropHelper both within the app and across the app.

Make your Compose app run fast by analyzing system traces and fixing common lag causes.

Learn how to use community-developed libraries to connect to a web service to retrieve and display data in your Android Kotlin compose app. Also learn how to handle potential network errors.

Learn how to further improve the architecture of the Mars Photos app by separating the network calls into a repository.

Learn how to test the Navigation component and maximize the amount of code that is tested.

Learn how to test an app for accessibility.

Build an app that displays a scrollable list of affirmations with text and images.

Change the app icon for the Affirmations app.

Learn how to add adaptive layouts to a view-based Android app with Jetpack Compose.

Learn how to create an Android app that showcases your own art space.

Add the Navigation component to the Cupcake app to organize the flow of the app, navigate and pass data between different screens.

Learn how to add a simple spring animation to your Compose app.

Over the years, Android devices have evolved to include a variety of sizes, shapes, and displays, among other features. Since the beginning, however, taking pictures with your phone has been one of the most important use cases. Today, camera capabilities are still one of the top reasons consumers purchase a phone.

In this codelab, you learn about the activity lifecycle and logging.

Learn about state, and how it can be used and manipulated by Jetpack Compose.

Learn how to add Material Theming to an app, including color, shape, and typography.

Apply what you learned about button click behavior to build an app.

Learn how to use the debugger in Android Studio to inspect and debug the state of your app at runtime.

Learn how to build an interactive Dice Roller app that lets users roll a dice and then shows them the result.

Learn how to handle edge-to-edge enforcements in Android 15.

Learn how to create a theme and brand that’s accessible and personalized with Material 3.

Learn how to use adaptive design principles in Material Design to achieve consistency across screen sizes. In this codelab, you take a mobile design to tablet format, and learn about the responsive grid, adaptive composition patterns, and the correct components.

Vulkan is a high performance, modern graphic API. It provides low level accessibility to the GPU and optimizes implementation in various ways, but it is difficult to use. The alternative, OpenGL ES, was simpler but has less features and performance as it is based on legacy hardware architecture. OpenGL ES has been deprecated on most other platforms and is no longer in active development. On Android, we are planning to deprecate OpenGL ES and move to Vulkan and need to prepare developers for the transition.

Learn how to use nullability in Kotlin.

Learn about functions in Kotlin

In this codelab, you’ll start with a simple 3D physics simulation game and integrate Adaptability features to it. You will integrate:

In this codelab, you use the Coil library to load and display photos from the internet in your Android Compose app.

In this codelab, you’ll learn the basics of Compose.

Within Kotlin Playground, learn to use Kotlin coroutines to write asynchronous code.

Learn how to connect your app

In this codelab, you'll learn how to continue receiving location updates for Android 10, keeping best practices for the platform in mind.

This codelab introduces how to create a camera app that uses CameraX to show a viewfinder, take photos and analyze an image stream from the camera.

In this codelab, you will install Android 11 Generic System Image (GSI) to Android 9 (Pie) devices. After that, you can develop and validate your application with the new OS!

In this codelab, you’ll modify a sample app to incorporate Jetpack Preferences DataStore, a new and improved data store solution and replacement for SharedPreferences.

Nesse codelab você aprenderá como converter seu código Java para Kotlin.

Learn how to add an action button, set up keyboard actions, and use a Switch composable.

The purpose of this codelab is to demonstrate theming in Jetpack Compose with new Material Design 3 and Material You implementation.

In this codelab, you’ll learn advanced concepts of state and side effects in Jetpack Compose. See how to create a state holder for complex stateful composables, how to create coroutines and call suspend functions from Compose code, and how to trigger side effects to accomplish different use cases.

Learn how to use classes and objects in Kotlin.

In this codelab you’ll learn about how to build rich, interactive, Compose applications by managing state.

In this codelab, you’ll learn how to use some Compose Animation APIs.

In this codelab you’ll learn about testing UIs created with Jetpack Compose. You will write your first tests while learning about testing in isolation, debugging tests, semantics trees and synchronization.

In this codelab, you’ll add Android Performance Tuner to a Unity game, allowing you to get performance measures reported in the Google Play Console when people play your game.

Apply the basic concepts of the Kotlin programming language to solve the given problems.

Learn to adapt your app to new form factors, like foldable and dual-screen devices, with the Jetpack WindowManager library.

Learn how to use Activity Recognition Transition Api to build powerful contextual features in your app

Learn how to add an action button, set up keyboard actions, and use a Switch composable.

Learn how to create and modify simple programs in Kotlin.

In this codelab, you’ll build an Android App which lists a series of restaurants. It aims to help design, configure, and verify Android App Links.

Gain a high-level introduction to more Kotlin concepts such as generics, enum classes, data classes, objects, and scope functions which you’ll be using in your Compose code.

In this codelab, you’ll learn how to measure app startup timing and frame timing with Jetpack Macrobenchmark.

Request location permission in Android 1

Build upon the concepts of material design, building a list and simple animations to build a list of super-heroes.

Android has many choices for guaranteed background work, which have various pros and cons. The WorkManager library for Android makes working in the background simple. WorkManager deals with edge cases and compatibility issues. It also can create tasks that are query-able, reusable and chain-able. WorkManager is the recommended task scheduler on Android. This codelab will teach you the ins-and-outs of WorkManager: everything from writing a simple job to more complex chained jobs with constraints.

In this codelab, you’ll add Android Performance Tuner to a native Android game, allowing you to get performance measures reported in the Google Play Console when people play your game.

In this codelab, you learn some of the advantages of using Kotlin, and you install the necessary tools (JDK+IDE).

This codelab shows how to improve app startup timing and frame timing with Baseline Profiles.

Learn how to implement advanced techniques that enable a state-of-the-art stylus experience in an Android app.

Learn how to write conditionals in Kotlin.

Learn how to use common higher-order functions with collections in Kotlin

Learn how to create an Android app that showcases your business card.

Learn how to use arrays and collections, including lists, sets, and maps.

In this codelab, you’ll add the Play Integrity API to a sample application. You’ll use the Play Integrity API to request an integrity verdict that helps you make determinations about the license status and integrity of your app, and the integrity status of the device it is running on.

In this codelab, modify a C++ demo application to take advantage of Play Asset Delivery for on-demand asset downloading from Google Play.

Add a scrollable list to the Affirmations app

In this codelab, you’ll integrate rewarded video ads into a simple demo game.

In this codelab you’ll learn how to write tests for a real world Android application that uses modern architecture. It showcases unit, integration and end-to-end tests using JUnit4, code coverage tools, Robolectric and Espresso. You’ll also learn how to create tests for an app that uses Kotlin coroutines and Architecture Components like ViewModel, LiveData, Room, Navigation and Data Binding.

Android has released many individual privacy features over the past few releases, and we are excited for you to adopt them in your apps! This codelab will seek to tie individual privacy features together and show the developer how they can learn about their app’s access to private user data and adopt privacy best practices in an existing, running app.

Learn how to use arrays and collections, including lists, sets, and maps.

In this codelab, you learn how to use a ViewModel, one of the architecture components. You will implement a ViewModel to retain the app state during configuration changes.

Last Updated: 2022-05-06 Cronet is the Chromium network stack made available to Android apps as a library. Cronet takes advantage of multiple technologies that reduce the latency and increase the throughput of the network requests that your app needs

Managing Android devices has never been easier. With the Android Management API, you can build a policy and provision a device in minutes. Our quickstart guide will give you everything you need to get started, and will help you set up a device from scratch in minutes.

Learn how to send and discover messages with the Nearby Messages API

In this codelab, you’ll modify a sample app to incorporate Jetpack Proto DataStore, a new and improved data store solution and replacement for SharedPreferences.

In this codelab, you’ll build your own Kotin extensions library for an API that was originally created in the Java programming language. You’ll learn the basics of extension functions and properties, as well as how to implement a coroutines and Flow version of a traditional, callbacks based API.

Learn how to use lambda expressions and higher order functions in Kotlin.

Build upon the concepts of material design by building a list and simple animations to build a list of superheroes.

Built on top of the “WorkManager Basics” codelab, this adds support for the new Progress API introduced in WorkManager v2.3 and shows how to customize WorkManager with a custom configuration. This codelab will also cover how to test Workers.

Apply the concepts of basic UI composables to implement screens for the given problems.

In this codelab, you’ll build an Android app that contains many of the optimizations needed for a good user experience on ChromeOS.

In this codelab, you’ll learn best practices for building Watch Next for TV movies/episodes.

In this codelab you add logging statements to the TwoActivities app and observe activity lifecycle changes. You work with these changes and explore how to handle user input under these conditions.

Build Material's motion system into the Reply app using transitions from the Material Components for Android library, and Kotlin.

In this codelab, you'll learn about lifecycle-aware architecture components and how to incorporate LiveData and ViewModels into your app.

Improve your design and learn to use our advanced component backdrop menu in Java.

Learn how to use Material for structure and layout on Android in Java.

Discover how Material Components for Android make it easy to differentiate your product and express your brand through design in Java.

Discover how Material Components for Android make it easy to differentiate your product and express your brand through design in Kotlin.

Improve your design and learn to use our advanced component backdrop menu in Kotlin.

Learn the basics of using Material Components for Android by building a simple app with core components in Java.

In this codelab you will take an image classifier, and run it on an Android phone using TensorFlow Lite.

Learn how to use Material for structure and layout on Android in Kotlin.

在此 Codelab 中，您将学习如何将 Java 代码重构为 Kotlin

In this codelab, you'll expand a video sample to add support for MediaSession. This allows Android to control playback from outside your app, for instance through the Google Assistant, remote controls on TV, or on-screen controls on the lock screen and Wear OS.

In this codelab, you'll build an Android app with ML Kit that uses on-device Machine Learning to recognize, identify language and translate text from between 59 languages. You'll also learn how to integrate the CameraX library to accomplish these tasks from a real-time camera feed.

This codelab introduces the new Android TV home screen. You'll learn how to add channels and programs to the Android TV launcher, and make them discoverable. Deprecated by jbax@

This codelab dives deeper into the new Android TV home screen. You'll learn how to add programs to the Play Next row, the different types of programs allowed, and best practices for your app to integrate with the row.