Android Backstage, a podcast by and for Android developers. Hosted by developers from the Android engineering team, this show covers topics of interest to Android programmers, with in-depth discussions and interviews with engineers on the Android team at Google. Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs
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Episode 169: Testing
In this episode, Romain and Tor are joined by Adarsh Fernando, Arif Sukoco and Yahan Zhou from the Android Studio team, covering the recent improvements to support for testing. This includes automated test snapshots, where the emulator captures a snapshot for a failing test you can then load and analyze later, it includes the Test Matrix tool where the IDE shows a matrix of tests and the devices they're running on, as well as a unified Gradle test runner, and Gradle managed virtual devices, and more. Android Studio Bumblebee: Android Testing Adarsh Fernando Arif Sukoco Yahan Zhou Romain: @romainguy Tor: @tornorbye
Episode 168: Material Composition
In our ongoing mini-series on Jetpack Compose, Nick and Romain talk to Clara Bayarri and Matvei Malkov about Compose’s support for Material Design. They discuss how Compose supports Material Components and Material Theming out of the box, how you can customize these to your needs or how Compose makes it easier to build your own design system. They also share insights into building reusable components with slot APIs and when to use CompositionLocals and look to the future with Compose’s planned support for Material You. Hosts Romain and Nick with Clara and Matvei. Material components reference docs Compose Theming guide Compose Theming codelab Build beautiful Material Design apps with Jetpack Compose Google I/O talk Compose Learning Pathway Clara: @clarabayarri Matvei: @matvei_jj Romain: @romainguy Nick: @crafty
Episode 167: Jetpack Compose Layout
In this second episode of our mini-series on Jetpack Compose (AD/BC) Nick and Romain are joined by Anastasia Soboleva, George Mount and Mihai Popa to talk about Compose’s layout system. They explain how the Compose layout model works and its benefits, introduce common layout composables, discuss how writing your own layout is far simpler than Views and how you can even animate layout. Hosts Romain and Nick are joined by Anastasia, George and Mihai and producers Daniel and Jessica 👋 Compose Layouts guide Compose Layouts codelab Layout composable Layout modifier Foundation Layouts & Modifiers (Row, Column, Box etc) Intrinsic size example Compose Learning Pathway Anastasia: @nastia_05 George: @georgemount1 Mihai: @mihaipopa12 Romain: @romainguy Nick: @crafty
Episode 166: Security Deposit
In this episode, Chad and Jeff from the Android Security team join Tor and Romain to talk about… security. Chad and Jeff explain what the platform does to help preserve user trust and device integrity, why it sometimes means restricting existing APIs, and touch on what apps can do or should worry about. App security best practices Security tips Security with HTTPS and SSL Chad: @chadbrubaker__ Jeff: @jeffvanderstoep Romain: @romainguy Tor: @tornorbye
Episode 165: Material Witnesses
In this episode, Chet and Romain welcome Hunter and Nick from the Material Design team. Material Design was originally introduced when Android 5.0 came out and has come a long way since then. Our guests will give you an overview of some of the recent additions and improvements to the Material Design Component libraries: transitions, motion theming, Compose, large screens support and guidance, etc. Material Design website Material You What’s new with Material at I/O Material Design Components for Android Material Motion with MDC Hunter: @hunter_stich Nick: @ricknout Chet: @chethaase Romain: @romainguy
Episode 164: Jetpack Compose Compilation
This episode is the first in the new mini-series “ADBC” on Jetpack Compose, hosted by Nick Butcher, in which we will dive deep into different topics in Android’s future UI toolkit. This time, 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. Also check out: Thinking in Compose Compose State Guide Compose State Codelab Lifecycle of composables Side-effects in Compose Compose Learning Pathway Adam: @adamwp Leland: @intelligibabble Nick: @crafty Chet: @chethaase Romain: @romainguy Tor: @tornorbye
Episode 163: Novel Graphics
In this episode, we talk with Nat Duca and Sumir Kataria from the Android graphics team about the graphics stack -- covering shaders, GPUs, Vulkan, OpenGL, ANGLE, drivers, blur, pixels and of course Chet's favorite topic; colors. Hosts Tor, Chet and Romain on the top row and guests Nat and Sumir on the bottom row If you're ever wanted to know how to pronounce "hwui", tune in! Sumir: @SumirKodes Nat: Link Chet: @chethaase Romain: @romainguy Tor: @tornorbye
Episode 162: Kotlin Symbol Processing
Cowardly abandoned by Chet and Romain, Tor faces three guests alone. Jeffrey van Gogh, Ting-Yuan Huang, and Yigit Boyar join Tor to talk about Kotlin Symbol Processing (KSP), a new, faster, and better tool to replace annotation processors. You will learn how KSP works, what it can do, why it was created, and how it is used in the Room Jetpack library. Tor, Ting-Yuan, Jeffrey, and Yigit, all looking amazingly happy to discuss annotation and symbol processing KSP announcement KSP GitHub project How to get started with KSP Libraries with KSP support Jetpack Room Jeffrey: @jvgogh Yigit: @yigitboyar Tor: @tornorbye
Episode 161: DataStories
This time, Tor, Chet, and Romain talked with Rohit Sathyanarayana and Florina Muntenescu about the DataStore library. DataStore is the replacement for SharedPreferences, being better for many reasons (it's asynchronous and avoids blocking the UI thread, it is type-safe). It not only has a similar/simple key-value pair API like SharedPreferences, but also has more powerful API as well. It's currently in alpha, but look for it to be the recommended approach soon as it approaches stable. Florina, Romain, Chet, Daniel (ADB audio producer, in person!), Tor, and Rohi Article: Using DataStore in Kotlin Serialization Docs: Docs Codelab: Preferences Datastore codelab Codelab: Proto Datastore codelab Florina: @FMuntenescu Rohit: @rohitsat123 Chet: @chethaase Romain: @romainguy Tor: @tornorbye
Episode 160: ART History
In this episode, Romain, Chet and Tor sit down with Brian Carlstrom and Nicolas Geoffray to discuss their work on ART (the Android Runtime). Brian and Nicolas describe the early prototypes and bringup of ART, getting it production ready, as well as recent developments such as cloud profiles. Chet, Brian and Romain on the top row, and Tor and Nicolas below Brian: https://carlstrom.com Chet: @chethaase Romain: @romainguy Tor: @tornorbye
Episode 159: Interview with Chris Lacy
Chet and Romain host Chris Lacy, a long time independent Android developer. In this episode, Chris explains how he decides what apps to build, how he used various platform APIs to create innovative applications like LinkBubble, and what challenges he faces. Chet, Chris and Romain Chris's apps include: SwirlWalls, a live wallpaper ActionLauncher, a replacement launcher By the way, Chris is looking to hire an Android developer. If interested, you can reach him at youshouldhireme@actionlauncher.com. Chris: @chrismlacy Chet: @chethaase Romain: @romainguy Tor: @tornorbye
Episode 158: Jetpack Compose... C'est bêta !
Chet, Nick, Clara, Leland, Tor, Adam, and Romain. So many guests! This time, Tor, Romain, and Chet chatted with a few people on the Jetpack Compose team, about... Jetpack Compose! Compose hit Beta a couple of weeks ago (don't believe me? Check out the recent Android show on Compose Show!), so we took the opportunity to talk to some of the people that have helped build it. We talk about the current state of the library, but also about some of the design decisions that went into developing the APIs and functionality. (Note on the audio quality for this episode - it turns out that mixing so many people, all of whom recorded themselves separately using very different hardware and setups was... tricky. It's listenable, but maybe a tad below the level we shoot for. Blame the pandemic. I do.) Subscribe to the podcast feed or download the audio file directly. #TheAndroidShow: Jetpack Compose The Jetpack Compose site (overview, tutorial, docs, samples, and more) Chet: @chethaase Romain: @romainguy Tor: @tornorbye Nick: @crafty Clara: @clarabayarri Leland: @intelligibabble Adam: @adamwp Thanks to our audio engineer, Dustin Elm, who has handled all of our audio mixing for the last couple of years, including the tricky part of mixing all of our remote- recorded episodes, like this one. Dustin's moving on to (greener? softer? louder?) pastures, so we'll be using a new, exciting process for mixing future episodes. Thanks, Dustin!
Episode 157: Audio feedback
What does a podcast look like? We don't know, so here's a picture of the podcast's website We want to hear from you! In this episode, Tor, Romain, and Chet talk about what they could do — or not do —to improve Android Developers Backstage. Please check our survey and let us know how you would like to see this podcast evolve. We recommend you first listen to the podcast to get the full context for some of the questions in the survey. Subscribe to the podcast feed or download the audio file directly. Chet: @chethaase Romain: @romainguy Tor: @tornorbye Thanks to continued tolerance and support by our audio engineer, Dustin Elm.
Episode 156: Android Runtime Classic (Dalvik)
It's history time! Or even [pre-]ART History time! We didn't take a picture this time. Please imagine what we looked like. This time, Tor, Romain, and Chet were joined by Dan Bornstein, one of the early members of the Android team. Dan joined in 2005 to create a runtime for Android, which became Dalvik. We talked about some of the early placeholder VMs used while Dalvik was coming online, some of the design decisions for Dalvik (like its register-based vs. stack-based implementation), and nice techy details about runtimes, garbage collectors, and optimizations. Subscribe to the podcast feed or download the audio file directly. Chet: @chethaase Romain: @romainguy Tor: @tornorbye Dan: @danfuzz Thanks to continued tolerance and support by our audio engineer, Dustin Elm.
Episode 155: WindowManagerManagers
Top row: Chet, Romain, Rob. Bottom row: Wale, Tor. In this episode, we chat with Wale Ogunwale and Rob Carr from the Android Framework team about the Window Manager. Tune in to learn about the evolution of the window manager, the distinction between System UI and the window manager, implementation challenges and recent architectural changes. Subscribe to the podcast feed or download the audio file directly. Chet: @chethaase Romain: @romainguy Tor: @tornorbye Thanks to continued tolerance and support by our audio engineer, Dustin Elm.