Learn how to survive configuration changes by handling your activities or fragment recreation the right way using either ViewModels, persistent storage, or doing it manually!

Learn how to use layout expressions for data binding in Android and make your code more concise and less error-prone.

In this Kotlin Sequences tutorial, you’ll learn what a sequence is, its operators and when you should consider using them instead of collections.

Learn how to build a release version of your app and upload it to the Google Play Store for testing and final release to end users. Also learn how to create a new developer account, how to use the...

Learn how to get started with in-app purchases and implement this library inside your next project.

In this course, learn how to use deep links to redirect users to a specific destination inside your app. After you complete it, you’ll be able to create a feature that can be helpful in marketing...

Learn how to use Spring Boot to create a web application with the help of Spring Iniatlizr, build a REST API and test it.

Build a desktop weather app with Compose for Desktop! You’ll get user input, fetch network data and display it all with the Compose UI toolkit.

Learn how to use the Kotlin Serialization library in your Android app and how it differs from other data serialization libraries available out there.

Learn how to use the new RenderEffect API in Android 12 to efficiently add custom styles to your views like blurs, saturation, offset, and more.

Learn how to best use interfaces and abstract classes to create class hierarchies in your Kotlin Android apps.

In this course, learn how to use the Navigation Architecture Component provided by Android Jetpack Library to simplify navigation in your app. It also helps you visualize your app’s navigation...

In this course, we will introduce you to SQLDelight, a generator for typesafe Kotlin code based on SQL database statements, with built-in support for migrations, schema validation and IDE...

Learn how Wear OS Tiles are different from regular Android layouts, how to implement your own Tile and handle user interactions.

Learn how to create a Gradle plugin within your existing Android app, or as a standalone project that you can publish and use in any Android project.

Learn about Android Services and the differences between foreground, background and bound services.

DataStore is Google’s new and improved solution for persisting simple pieces of data by using either key-value pairs or protocol buffers for storing typed objects. It does so using Kotlin...

In this tutorial, you’ll build an Android app, using the full potential of Kotlin Enums to handle a list of cartoon avatars and help your users easily create their profiles.

In this Values and Mutability tutorial, you’ll learn how to declare mutable, immutable, constant, late/lazily initialized, static & inline values.

Learn how to use a variety of dialogs to display different types of information, show touch states and progress indicators and provide quick updates to users with snackbars and toasts.

Looking for a great first repo to make some open source contributions? Why not contribute to the official raywenderlich.com mobile apps?

Learn how to implement biometric authentication in your Android app by using the Android Biometric API to create an app that securely stores messages.

In this Kotlin Playground tutorial, you’ll learn how to use the online tool to write, run and share your code for different targets like JVM, JS and JUNIT.

Android 11 has amazing new features that allows developers provide great user experiences. In this course you are going to learn how to create bubble notifications to give users a quick way to...