Articles & Tutorials

Nick Skelton has struggled unit testing Kotlin Flows attempting to apply LiveData or RxJava approaches. In this article, he then goes on to experiment with the Google recommended method and finally, showcases the best solution so far.

This is the fourth in a series of articles that cover the fundamentals of using RecyclerView. This blog post by Meghan Mehta goes through adding a Header to a RecyclerView.

A couple of tips from Saket Narayan to help your team reduce the amount of time a PR remains open and waiting for reviews.

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Siarhei Krukau's detailed guide to publishing your library on Maven Central.

In the previous article, Mark Allison looked at how the new Activity Result Contract pattern, which can keep our code much easier to understand. Now he shows how to avoid putting too much logic into the Activity.

Marco Gomiero shares an in-depth article on integrating Kotlin Multiplatform into your existing project.

As a result of JCenter and Bintray shutting down, many library authors who published their libraries to JCenter are scrambling to move to Maven Central. Sebastiano Poggi writes about some tips to help with the transition.

How do we enforce that other developers use our custom view, instead of the Android framework view? Adam McNeilly shows how we can solve this problem by writing our own Android lint check.

One of the best changes Dan Lew has made at work recently is to stop nitpicking in code reviews. He explains why that is and how to make it happen.

David Denton argues the case for Kotlin’s Companion Objects being the Clark Kent of language features, in being deceptively powerful, and how they can be used to supercharge our API designs.

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Jobs

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Perry Street Software publishes two of the world’s largest gay & queer social dating apps. We are hiring Android developers with experience in design and architecture patterns, Android SDK, Kotlin, RxJava, and a good sense of usability and product.

At Monzo we’re building a bank that’s fair, transparent and a pleasure to use, and we're looking for a product-aware Android engineer passionate about great UI and UX to help!

Join the team that delivers the member-facing experience for our core products - the bike & tread. This team works heavily with Kotlin - all within our custom fork of AOSP. We care about architecture, testing, and “together we go far” mentality. Staff engineers at Peloton are technical leaders

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Libraries & Code

Shuttle provides a modern, guarded way to pass large Serializable objects with Intents or saving them in Bundle objects to avoid app crashes from TransactionTooLargeExceptions

MVVM Redux is a lightweight lib to help you apply the redux concepts in your project based in MVVM

A tiny (Kotlin) library for generating attractive colors

Turbine is a small testing library for kotlinx.coroutines Flow

News

For the next four weeks, the #AndroidDevChallenge will be launching a series of weekly challenges to help you build better apps faster with Jetpack Compose.

The Compose testing cheat sheet is a quick reference of some of the most useful Compose test APIs. The cheat sheet is also downloadable in PDF format.

In an effort to help users stay informed about their sleep, Google has made the Sleep API publicly available.

At the beginning of this year Google launched the #AndroidDevJourney to share the stories of members of our community through our social platforms.

Google has launched the beta release of Jetpack Compose, the new UI toolkit designed to make it faster and easier to build native apps across all Android platforms.

Videos & Podcasts

Developer "scores" and assessments can be motivating and a fun gamification element for some. However, for others, they can be discouraging and misleading. In this episode, Nate Ebel shares some thoughts on why these kinds of developer "scores" are more trouble than they are worth.

Mikhail Dvorkin, ICPC World Finals gold medalist, shows how to solve a sample coding interview problem in Kotlin.

Anton Shilov's presentation that answers the questions: How can we migrate the existing design system to Jetpack Compose? What are the key steps to follow for successful integration with the existing codebase?

The MotionLayout API and design tool makes creating animations much easier. In this series, you’ll learn how to use MotionLayout to make rich, dynamic animated experiences

A playlist of highlights from Material Live presentations.

In this video, Jovche Mitrejchevski sets up the UI testing dependency and writes the first Compose UI test for this series.

Before we continue to dive into all the features Kotlin has to offer out of the box, this episode looks at handy ways to explore Kotlin code on our own. These tricks can be used to explore the Kotlin standard library or Kotlin code in general

Rahul Pandey presents "lazy", an inbuilt Kotlin function that allows us to construct the object when it's actually used, and subsequent calls return the remembered result.

#TheAndroidShow, takes you behind the scenes of Jetpack Compose, Android's modern toolkit for building native UI.