Issue #488

October 17th, 2021

Articles & Tutorials

Create an Android Library (AAR) (

Anusree Sajeevan covers steps to create an Android library, blockers while creating it and how to resolve them.

link image   Building Mobile Apps at Scale: 39 Engineering Challenges (

140+ pages of insights on building for mobile at scale, sourced from teams at Google, Uber, Amazon, and more. Download a free copy!

How to Secure Secrets in Android (In-Depth) (

Ali Azaz Alam examines the features of the Android Jetpack Security library.

link image   Build Awesome Chat Features with Jetpack Compose (

Try Stream's brand new Chat SDK for Jetpack Compose today! The tutorial shows you how to add an in-app messaging feature with just a few lines of code, as well as the flexibility and customization options available for the components. All open-source, open for feedback and contributions.

Manage your Gradle dependencies with Version Catalog (

Łukasz Bogusz shows how to work with Version Catalogs in Gradle 7.0 for centrally managing your dependency versions.

Stressing memory on Android (

In this article, Amanjeet Singh introduces you to a tool that he found to be super useful for reproducing memory pressure conditions in any device.

Compose for Wear OS: Scaffold (

Nikit Bhandari helps you understand how to use Scaffold in Wear OS to build apps using different Material Design components.

What’s New in kotlinx.serialization 1.3 (

Nav Singh looks at the major new features that kotlinx.serialization 1.3 brings for developers to manage JSON parsing more efficiently.

Fastlane Tutorial for Android (

James Nocentini teaches how to use fastlane to automate tasks like generating screenshots, updating metadata for your Android apps and uploading apps to the Play Store.

Fetching data and binding it to the UI (

TJ continues his series on the Paging 3.0 library. In this article, he covers how to actually consume the Flow in your UI.

Introduction to Paging 3.0 (

TJ introduces the Paging 3.0 library and highlights how to integrate it into the data layer of your application.

Protecting your backends with Firebase App Check (

This article shows how using Firebase App Check helps mitigate fraud and secure access to your backend resources—whether those are Firebase resources or your own.

Using CameraX Exposure Compensation API (

Wenhung discusses the challenges app developers face when working with camera exposure and covers how the new CameraX Exposure Compensation API helps to address these challenges.

Jetpack Compose: Drag-and-drop reorder for lists (

Although not yet fully supported natively, Bevan Steele shows a way to implement drag & drop in a LazyList.

Jetpack Compose: lists primer (

Bevan Steele gives a taste of one of the most basic building blocks of a modern UI in Jetpack Compose: lists


Place a sponsored post

link image   Place a sponsored post & reach over 66k Android devs (



Android Developer (Toronto, Ontario)

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Android Developer (Vancouver, BC)

Konrad is looking for Android developers of all experience levels to join our mobile team building native apps for the world’s most exciting companies. Our team of 200+ developers is always looking to solve challenging problems, learn, and have fun!

Software Engineer, Android (Kotlin) (United States, Remote)

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Senior Android Full-Stack Engineer (US-based Remote)

Nurx is a startup focusing on women's and sensitive health — birth control, STI testing, PrEP, and more! You'll bring an old Kotlin-wrapped webapp into the future, driving product direction, advocating for the Android experience and improving the health outcomes for thousands of patients every day!

Senior Android Engineer (100% Remote - North and South America preferred)

Architect and build a new Kotlin-based Android SDK that our customers, such as The Knot, Lyft, and ProfitWell will embed in their Android apps to display native mobile experiences that drive app adoption and growth. We deliver 1.4 billion experiences to web apps today, our Android SDK may 2x that!

Senior Android / Kotlin Developer (Remote)

100% Remote We are hiring Senior Android / Kotlin Developers. Work from anywhere for the world's leading brands and get supported to do more of what you love. Join the most energizing community for remote developers.

Android Engineer (Remote - EU, EEA, Switzerland & UK)

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Libraries & Code

link image   ComposeReorderable (

A Jetpack Compose (Android + Desktop) modifier enabling reordering in a LazyList.

komposable-architecture (

Kotlin implementation of Point-Free's The Composable Architecture

kmm-awesome (

An awesome list that curates the best KMM libraries, tools and more.

crypto-hash (

A collection of Kotlin Multiplatform Mobile libraries to aid in mobile app development.

sample-wake-me-up (

Romain Guy updated and open-sourced the Jetpack Compose demo he showed in the I/O 2021 Developer Keynote.

multik (

Multidimensional array library for Kotlin



link image   Multik 0.1 Is Out (

Jetbrains introduces Multik 0.1 – a new, enhanced version of their multidimensional array library.

Kotlin Symbol Processors (

Kotlin Symbol Processing (KSP) is a library built by our friends at Google, which provides an API to build lightweight compiler plugins. Alina Grebenkina announces that it has reached a stable release.

ML Community Day | November 9 at 9 am PST (

Join Google for the latest announcements on Google's machine learning products. They'll share highlights from the community and ways to get involved in the ecosystem. Learn what's new with TensorFlow, JAX, On-Device ML.

Compose for Wear OS now in Developer Preview! (

Google announces that Compose for Wear OS is in Developer Preview.

Announcing the Android Basics in Kotlin Course (

Google announced that the final unit has been released, and the full Android Basics in Kotlin course is now available.


Videos & Podcasts

link image   Adding Hilt To Jetpack Compose Applications (

Adam McNeilly wrap up the work for our login screen by talking about Hilt and how it sets up our core dependency injection for the application

Introducing Firebase App Check (

Firebase App Check is a layer of security that protects your backend resources by verifying the request from your Firebase application. App Check can restrict access to Firebase resources, your own server, and much more

Manipulating lists using windowed, scan, firstNotNullOfOrNull (

In this episode of Idiomatic Kotlin’s AdventOfCode series, we’ll look at different ways to manipulate lists in Kotlin to solve the puzzle. We’ll work with the ‘any’, ‘firstOrNull’, ‘firstNotNullOfOrNull’, ‘windowed’, ‘takeIf’, and ‘scan’ functions, which exemplify an idiomatic Kotlin style.

Paging: Fetching data from network (

In this episode of Paging for the Modern Android Development Skills series, Android Developer Relations Engineer TJ Dahunsi will start using the pager for populating the UI

Kotlin News September 2021 (

Check out the most interesting developments around Kotlin in September 2021