Issue #468

May 30th, 2021

Articles & Tutorials

link image   Exploring Android 12: Splash Screen (

Joe Birch digs into the latest version of Android which gives to us the Splash Screen API.

Compose - List / Detail: Basics - Styling Android (

Mark Allison shows how to build a side-by-side List/Details screen in Jetpack Compose.

link image   What’s your Mobile Testing Maturity Score? (

Curious about your level of mobile testing maturity? Take our interactive mobile testing assessment and receive personalized results that will show how you rank against your peers.

Implementing a Stopwatch with Kotlin Coroutines and Flow Part 1 (

In this first part, Aleksander Jaworski shows a simplified version of a stopwatch implementation that will only handle one stopwatch.

Cartographing Jetpack Compose: foundation (

Thomas Künneth completes his series on digging through Jetpack Compose's compiler, runtime, and foundation.

Custom Weekly Schedule Layout with Jetpack Compose - Part 1 (

In this tutorial, Daniel Rampelt builds a custom weekly schedule layout in Jetpack Compose, which looks similar to the week view in Google Calendar or other calendar apps.

Understanding Unit Tests for Android in 2021 (

Christopher Elias shows that unit tests are NOT hard at all and shares several examples of how to implement tests of various complexity.

Limit the Availability of Kotlin Extension Functions (

While extension functions are very useful, it may not be appropriate for all objects in a class hierarchy to be able to execute certain extension functions. John Hoegy shows how to add these limits.

Merging RxJava Observables considered harmful — Part I (

Modern Android apps are frequently built atop RxJava. However, you may see UndeliverableExceptions in your crash logs. Stelios Frantzeskakis examines what leads to this situation.

Untrusted Touch Events (

Meghan Mehta writes about how Android 12 includes additional measures to ensure that touch events are properly passed to the intended apps to ensure an intuitive and safe UX.

Introduction to the Compose Snapshot system (

This post by Zach Klippenstein explores the lower-level snapshot APIs in Compose.

A historical introduction to the Compose reactive state model (

This post is part of a series by Zach Klippenstein that attempts to explain how Compose does updates via its snapshot state system.


Place a sponsored post

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

I Spent $5,000 Advertising My Free Book to iOS and Android Engineers (

Gergely Orosz spent $5,000 advertising his free book on several platforms, including a sponsored post at Android Weekly. The result was pretty nice to hear for us!



Lead Developer Kotlin (Paris, France)

BAM is looking for a lead developer Kotlin to take part in its growth (+500% since 2015). Your goal is going to help our clients tackle their business problems thanks to mobile apps by using the lastest technologies.


Libraries & Code

link image   CarouselRecyclerview (

Carousel Recyclerview let's you create carousel layout with the power of recyclerview by creating custom layout manager.

create-compose-desktop-app (

A tool that gives you a massive head start when building Compose Desktop apps. It saves you from time-consuming setup and configuration



link image   Join us for Google for Games Developer Summit 2021 (

The games teams at Google are back to announce the return of the Google for Games Developer Summit 2021 on July 12th-13th

Nine Highlights from the Kotlin Roadmap (

If you want to stay up to date and follow all of the Kotlin team’s plans, review the public roadmap; they’ve just updated it to reflect our plans for 2021 and beyond.

Google Play Academy's Security by design module (

Sign up for the Security by Design module wherein a few short courses, you will learn how to integrate security into your app development lifecycle, model potential threats, and app security best practices into your app, as well as avoid potential design pitfalls.

What’s new in KMM since going Alpha (

Please read Ekaterina Petrova's overview of the main KMM ecosystem highlights since going Alpha so that you don’t miss any important updates.


Videos & Podcasts

link image   Building An Android App With MVI (

Adam McNeilly's live stream recording as he develops an Android app with MVI.

Android Developers Backstage: Jetpack Compose Compilation (

Nick and Chet talked with Adam Powell and Leland Richardson about the Compose compiler, the runtime, data flow, and that nifty feature where Compose knows when to call your Composable based on changes in data state.

Kotlin 1.5.0 Release Community Event (

Includes Kotlin 1.5.0 Highlights with Svetlana Isakova and Sebastian Aigner, Future plans for Kotlin with Roman Elizarov and a Q&A with the Kotlin team.

Growing an Online Presence in the Software Industry with Philipp Lackner (

In this episode, Donn talks with Philipp Lackner about growing an online presence within the Software Industry with Instagram and YouTube.

Android Developers Backstage: Novel Graphics (

In this episode, Nat Duca and Sumir Kataria from the Android graphics team talk about the graphics stack -- covering shaders, GPUs, Vulkan, OpenGL, ANGLE, drivers, blur, pixels and of course Chet's favorite topic; colors.