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 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.
Episode 154: It's a Wrap!
This episode is dedicated to the memory of our dear friend and colleague, Carl Quinn. Our last episode of the year arrives just in time for the holiday season. In this episode, Tor, Chet, and Romain go over everything that happened in 2020, both good and bad. We look back at how conferences have been impacted by the pandemic, why Android Studio changed its versioning scheme, the new tools and libraries that were released, etc. We would like to thank all of our listeners for their continued support. We'll be back in early 2021 with more episodes and new guests! 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 153: Ok, Ok, Ok
Romain, Tor, and Chet talked with Jesse Wilson from Square. Jesse has worked on several popular open-source libraries, including OkHttp, Okio, and [Ok]Moshi. We talk about those libraries, and others, and about Android, library, framework and Kotlin development. And about that nasty habit some engineers have of turning a feature request or minor annoyance into a project of creating a new open-source library instead. Favorite quote, from Jesse: "I started with 2k. Someone told me 8k was faster." Subscribe to the podcast feed or download the audio file directly. Links: OkHttp OkHttp Kotlin Release Okio Okio Buffer.kt internals GraalVM Jesse: @jessewilson Chet: @chethaase Romain: @romainguy Tor: @tornorbye Thanks to continued tolerance and support by our audio engineer, Dustin Elm.
Episode 152: Image Loading with Coil
Chet, Colin, Romain, and Tor This week, Tor, Romain and Chet are joined by a special guest: Colin White from Instacart. Colin is the author of Coil, a popular image loading library backed by Kotlin and Kotlin Coroutines. In this episode, Colin explains what Coil is, how and why it was created, etc. Subscribe to the podcast feed or download the audio file directly. Links: Coil Coil on GitHub The feature request Romain filed And the PR to implement that feature request Colin: @colinwhi Chet: @chethaase Romain: @romainguy Tor: @tornorbye Thanks to continued tolerance and support by our audio engineer, Dustin Elm.
Episode 151: Paging3
Chet, Dustin, Chris, and Romain. (Tor not pictured. Because he wasn't there) Romain and Chet talked with Dustin Lam and Chris Craik from the Toolkit team about Paging3. Paging3 (currently in alpha) is a complete rewrite of (wait for it...) Paging2, using Kotlin, coroutines, and Flow for optimal implementation and APIs. (But note that there are also APIs for developers using the Java programming language and/or RxJava, so take your pick). We talk about Paging, the asynchronous work that made coroutines an obvious choice for the implementation, recent and future features, and API design in general. Subscribe to the podcast feed or download the audio file directly. Links: AndroidX Paging library Bug bounty hotlist! Dustin: @itsdustinlam Chris: @chris_craik Chet: @chethaase Romain: @romainguy Tor: @tornorbye Thanks to continued tolerance and support by our audio engineer, Dustin Elm.