Learn how to create and work with collections of data using differenct collection types in Kotlin and explore lambdas, which is an integral part in many Kotlin codebases.

Learn how to set up a development environment and create a simple Flutter calculator app for Windows Desktop.

Learn the fundamental building blocks of Kotlin, through hands-on exercises and challenges! Explore the world of data types, comparison and logical operators, loops, control flow and functions and...

Learn how to use Lazy Composables in Jetpack Compose to simply display data in your app.

Learn what Kotlin Serialization library is and how to use it in your Android app. Also learn how it differs from other data serialization libraries like Moshi and Gson.

Learn how to get rid of the boilerplate code within your app by using Kotlin Symbol Processor (KSP) to generate a class for creating Fragments

See how you compare to your mobile developer peers by answering our State of Mobile Jobs Survey 2022!

Learn Flutter’s own way to display overlays like popUps, modals and dialog boxes with the help of popUpRoutes.

Style Transfer is a machine learning technique. Through this, you can transform any given image stylized as another! In this tutorial, you’ll learn how to leverage Apple’s ML Frameworks to achieve...

In this course, you’ll learn about how to fetch, sort and filter entries from a Core Data persistent store. You’ll also dive into some more advanced topics such as delete rules and Core Data with...

In this tutorial, you’ll learn to create a dynamic web application with React.js and integrate it with a Vapor server-side application.

Learn how to use Futures and Streams for writing asynchronous code in dart

In this tutorial, you’ll create an app that uses audio playback, location updates, critical tasks, and background fetch to learn about the most common background modes.

Learn the basics of Core Data in this beginner series. You’ll learn how to model your data with attributes and relationships, save data using a context, display saved data in lists and much more,...

Learn about Mobius, a functional reactive framework for managing state evolution and side effects and see how to connect it to your Android UIs.

Catch up on our extended episodes for the raywenderlich.com podcast via our YouTube channel. All unedited episodes for Season 12 are available now!

This course is the sequel to “Your First Kotlin Android App: An App from Scratch.” In this course, we’ll finish off programming Bull’s Eye to add some nice touches and features to make it look...

Make the most out of your time with raywenderlich.com — check out the newest site features created just for you!

Learn how to integrate and use Superwall to remotely configure and control your paywall to monetize your app.

Learn about the lifecycle of a composable function and also find out how to use recomposition to build reactive composables.

Bazel is an open source build system created by Google for compiling large complex codebases. This courses teaches the basics of using building from writing a very simple Java application to...

Gain a deeper understanding of Kotlin Coroutines in this Advanced tutorial for Android, by replacing common asynchronous programming methods, such as Thread, in an Android app.

Updated for 2022! Get started with Android by building your own game using the Kotlin programming language. If you’re new to Android and development as a whole, then this course is for you.

Learn how to handle a phone screen interview like a pro including how to prepare based on your interviewer, which questions to expect and how to follow up.