Episodi
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In this episode Tor and Romain find themselves without a guest and decide to chat about micro optimizations and writing custom tools.
Tor and Romain
Chapters:
Intro (00:00)
Micro optimizations (00:32)
Kotlin explorer (3:25)
Avoiding object allocations (6:49)
Code Inefficiencies (8:10)
Compilers (12:13)
Understand assembly with AI (18:39)
Layout opt (21:20)
Programmers writing tools (21:52)
char.isBlank (25:35)
Lint checks (27:59)
Companion objects (29:40)
Java assertion mechanism (32:00)
Hash maps (35:13)
When to micro optimize and when not to (43:46)
Benchmarking (47:26)
New optimizations (48:46)
Wrap up (50:46)
Romain: @romainguy, threads.net/@romainguy, [email protected]
Tor: threads.net/@tor.norbye and [email protected]
Catch videos on YouTube → https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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In this episode we talk with Kathy Korevec from the AIDA team at Google about AI assisted developer tools, such as Android Studio -- which is using Gemini AI models provided by AIDA.
Romain, Kathy, and Tor
Kathy: twitter.com/simpsoka
Romain: @romainguy, threads.net/@romainguy, [email protected]
Tor: threads.net/@tor.norbye and [email protected]
Check out → https://goo.gle/3wK4EM4
Catch videos on YouTube → https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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Episodi mancanti?
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In this episode we cover ADB -- not "Android Developers Backstage", but "Android Debug Bridge", the technology powering device connections. Romain and Tor talk with Fabien Sanglard from the Android Studio team on his work to improve the debug stack -- including the new USB speed detection feature recently unveiled at Google I/O.
Chapters:
Intro (00:00)
You may know Fabien from… (00:50)
Applying relevant knowledge to Android Studio (3:28)
Communicating with remote devices and debugging (12:18)
Accommodating a debugger (13:55)
Fixed protocols and how to work around (16:10)
What other versions of ADB do you use to get the suite faster? (19:27)
Other ways to make the debugger faster (20:38)
The differences between USB cables (21:51)
How to find the right cable (30:17)
ADB over wifi (32:41)
How to detect which usb port is faster on your laptop? (34:46)
Complexity of new cables (36:57)
Install time of APK’s (37:41)
New ways of helping full stack devs (45:44)
Final thoughts (49:19)
Viewer questions (57:54)
Romain: @romainguy, threads.net/@romainguy, [email protected]
Tor: threads.net/@tor.norbye and [email protected]
Fabien: @fabynou,
Check out → https://goo.gle/3wK4EM4
Catch videos on YouTube → https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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In this episode, Tor, Romain, and Chet talk with Aurash Mahbod from the Play Games team at Google -- covering trends in mobile games, challenges for Android games developers, console games, and more!
Chapters:
Intro (00:00)
What’s Aurash working on currently? (02:40)
How much is Play store providing users with content based on previous interests? (05:29)
Longstanding games vs new games (08:34)
Mobile gaming vs console (10:07)
Are there stats on what type of games people are playing? (18:07)
Difficulties and solutions for transitioning games from various devices (21:14)
Movie corner - War Games (25:15)
How does Play console help devs optimize engagement? (26:23)
What is the breakdown of tools that devs actually use for games? (27:53)
Reducing the backend costs for devs (30:18)
Where does loyalty content surface? (34:28)
Balancing add load (35:16)
Cloud saves (38:18)
Aurash’s history with Play store (42:18)
Wrap up (42:58)
Romain: @romainguy, threads.net/@romainguy, [email protected]
Tor: threads.net/@tor.norbye and [email protected]
Chet: @chethaase, threads.net/@chet.haase, and [email protected]
Aurash: https://twitter.com/aurash - @aurash
Catch videos on YouTube → https://goo.gle/adb-podcast -
In this episode, Tor, Romain, and Chet talk about one of Tor’s favorite topics: Lint! Specifically, we talk about Lint checks and the annotations that use them to enable better, more robust, and more self-documenting APIs.
Lint: It’s not just for pockets anymore.Chapters:
Intro (00:00)
Lint checks for annotations (01:50)
Lint checks in Android (05:38)
Logic checks (07:34)
Color representations (10:01)
How does lint know the type of integer? (14:40)
Kotlin annotations (17:19)
Unsigned (20:10)
HalfFloat (22:25)
Thread annotations (25:12)
@CallSuper (28:18)
LayoutOpt (30:26)
Lint checks in AndroidX (32:00)
Restrict to annotation (36:45)
Writing your own custom Lint checks (39:51)
Lint testing framework (43:26)
Kotlin buildList Lint check example (45:25)
@Discouraged (48:15)
Wrap up (50:08)
@Deprecated Chet (50:50)
Romain: @romainguy, threads.net/@romainguy, [email protected]
Tor: threads.net/@tor.norbye and [email protected]
Chet: @chethaase, threads.net/@chet.haase, and [email protected]
Catch videos on YouTube → https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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In this episode, Tor, Romain, and Chet talk about some of the many things that happened this year in the world of Android development, including new devices and form factors, tool improvements, AndroidX features and libraries, and Jetpack Compose releases. And any tech podcast would be remiss without mentioning AI/ML, so we talk about that too.
Tor, Romain and Chet
Chapters:
Intro (00:00)
Google engineers vs Android (00:57)
Big changes of 2023 intro (3:03)
AI (3:38)
Programming with AI (5:08)
Writing with AI (8:52)
New devices from Android - Pixel fold (12:31)
Pixel watch (18:50)
Bard (19:37)
Changes in device release times (20:23)
Major changes in devices vs incremental updates (21:42)
Camera (22:40)
Platform developments - mainline modules (24:03)
More testing for Android (25:12)
Flaky tests (26:55)
Jetpack compose features (32:32)
RTO (38:00)
Shapes library and KMP (42:42)
Final thoughts on big events of 2023 (45:03)
Studio build improvements (46:43)
Baseline profiles (49:21)
Listener mail (50:45)
Where has Chet been? (52:46)
Metalava question (55:46)
Wrap up wrap up (57:00)
Romain: @romainguy, threads.net/@romainguy, [email protected]
Tor: threads.net/@tor.norbye and [email protected]
Chet: @chethaase, threads.net/@chet.haase, and [email protected]
Catch videos on YouTube → https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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In this episode, Tor and Romain chat with Aurimas Liutikas from the AndroidX team. Topics include performance tuning the AndroidX Gradle builds using configuration caching, local caching and remote caching, as well as tracking API compatibility using the Metalava tool.
Aurimas, Romain and Tor
Romain: @romainguy, threads.net/@romainguy, [email protected]
Tor: threads.net/@tor.norbye and [email protected]
Aurimas: androiddev.social/@Aurimas and www.liutikas.net/blog-posts
Catch videos on YouTube → https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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In this episode, Tor and Romain chat with Greg Baker and Joe Baker-Malone about exciting new Android Studio features made possible by Firebase integration. Physical device streaming allows you to connect remotely to physical devices hosted in Google’s secure data centers and use them for all your development needs. We also explore other time saving features like the ability to go from a crash report directly to the correct line of code, even across git branches.
Tor, Romain, Joe, Greg
Links:
Android Device Streaming from Android Studio feedback form
App Quality Insights and Firebase Crashlytics
Romain: @romainguy, romainguy@threads, [email protected]
Tor: tor.norbye@threads and [email protected]
Greg: @[email protected]
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In this episode, Chet and Romain speak with Ken Russell and Corentin Wallez from the WebGPU team. WebGPU is a new API that brings modern GPU rendering and compute functionality to web and other platforms (including Android!). We talk about the genesis and capabilities of WebGPU, WGSL (WebGPU’s new shading language), the state of WebGL (the predecessor API for web GPU rendering), and lots of other fun related graphics topics.
Ken, Romain, and Chet (not pictured: Corentin, who is on the monitor behind the photographer)
Links:Samples (and its github repo)
Google I/O Codelab
Google I/O presentation Introducing WebGPU (and associated blog post)
Series of articles teaching WebGPU and WGSL
Series of articles of WebGPU Best Practices
Draft specs for WebGPU and WGSL
Dawn from Google/Chromium
wgpu from Firefox
Romain: @romainguy, romainguy@threads, [email protected]
Tor: tor.norbye@threads and [email protected]
Chet: @chethaase, chet.haase@threads, and [email protected]
Ken: @gfxprogrammer
Corentin: @DaKangz and @[email protected]Catch more from ADB → https://goo.gle/adb-podcast
Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs -
This time, Romain, Tor, and Chet talk with Leland Richardson, George Mount, and Chuck Jazdzewski from the Jetpack Compose team about performance. The team has been looking at performance issues recently and discusses what they’ve found, what gotchas lie in wait for library developers, what tools and compilers can magically handle for you... and what they can’t. Tune in to learn about why we worry about autoboxing (and why you probably shouldn’t).
Foreground: Romain, Tor, George, and Chuck
Background (on the monitor): Chet, Leland, and Cody (audio engineer/producer), plus another view of the Studio with Romain, Tor, George and Chuck again, for your recursive pleasure.Links:
Jetpack Compose
Android Studio Memory Profiler
Macrobenchmark
Baseline profiles
Kotlin bytecode decompilation
Romain: @romainguy and [email protected]
Tor: tor.norbye@threads and [email protected]
Chet: @chethaase and [email protected]
Leland: @intelligibabble
George: @georgemount1
Chuck: @chuckjaz
Catch ADB on YouTube → https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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Since our original episode on location nearly nine years ago, a lot has happened in the location support for Android. In this episode, Wyatt Riley and Roy Want answer all of Tor's questions about how it works and cover recent developments like indoor location, elevation, and some tips for developers.
Wyatt, Roy and Tor.
Links:
Getting started guide
Precise indoor location
Wi-Fi Alliance(WFA) : Wi-Fi Location(TM) demonstrated at a recent WFA member event
Android Developer resources for Wi-Fi RTT (IEEE 802.11mc) Location
Google Play Store has three apps that demonstrate Wi-Fi RTT (IEEE 802.11mc) capabilities for devices with 11mc support.
WifitRttLocator (phone positioning in a building with 11mc capable Access Points)
WifiRttScan (Phone to Access Point ranging)
WifiNanScan (Phone to phone ranging)
Catch ADB on YouTube→ https://goo.gle/adb-podcast
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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You saw it at Google I/O - now you can hear about it in the comfort of your own headphones! Tor, Romain, and Chet talk with Siva Velusamy and Sandhya Mohan from the Android Studio team about the just-launched Studio Bot. This new AI-powered assistant enables conversational queries in the IDE to help with coding, commenting, confusion, or if you just need a friend.
Chet, Tor, Romain, Sandhy, and Siva in the Sunnyvale studio
Studio Bot: https://goo.gle/3BBEKZI
Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs
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Raluca Sauciuc joins Tor and Romain to talk about what goes on behind the scenes in Android Studio. Raluca takes us through the tools and workflows used by the Android Studio team to improve performance and memory usage, and avoid future regressions. She also explains how the team adopts new versions of the IntelliJ IDE and platform, and how they can deal with massive code merges.
Raluca, Romain, and Tor
Romain: @romainguy and [email protected]
Tor: @tornorbye and [email protected]
Chet: @chethaase and [email protected]
Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs
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Chet and Romain talk to Jeff Hamilton and Anton Hansson from the Mainline team about "modular system components", and the new SDK extension framework which lets developers access them.
Anton Hansson top right, and Jeff Hamilton bottom left, with Romain and Chet
Blog post: https://goo.gle/3S1c3g4
AndroidX convenience constants, e.g. T_EXTENSION_INT: https://goo.gle/3lEJwRx
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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This time, Tor, Romain, and Chet were joined by Siyamed Sinir and Sean McQuillan from the Android Text team to talk about, well, text. Which, it turns out, is a very deep, complicated, and constantly evolving technology. The conversation covered everything from the fundamentals of the text stack on Android to the capabilities and implementation of text in Jetpack Compose to internationalization to fonts to emojis to performance to.... you get the idea. There was a lot of stuff to talk about. And so much subtext.
Romain, Chet, Sean, Tor, and Siyamed (using RTL support: Siyamed, Tor, Sean, Chet, and Romain)
Links:
Text In Compose Compose Variable Fonts ComboBreaker ColrV1 Fonts i18n & Text in Android 13 Text is hard! Rendering & Editing Compose Downloadable FontsRomain: @romainguy and [email protected]
Tor: @tornorbye and [email protected]
Chet: @chethaase and [email protected]
Siyamed:@siyamed
Sean: tech.lgbt/@objcode
Subscribe to Android Developers → https://goo.gle/AndroidDevs
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In this episode, James Ward joins Chet, Tor, and Romain to talk about Kotlin. We talked about Kotlin Multiplatform (both KMP and KMM) and what’s coming for Kotlin in 2023, especially the new K2 frontend.
James, Tor, Romain, and Chet.
Links:
Kotlin Kotlin Multiplatform (KMP) Kotlin Multiplatform Mobile (KMM) Jetpack Multiplatform Libraries Compose Multiplatform by JetBrainsRomain: @romainguy and [email protected]
Tor: @tornorbye and [email protected]
Chet: @chethaase and [email protected]
James: @_jamesward
Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs
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This time, Romain and Chet ditched Tor so that they could geek out about graphics, talking about paths, Bézier curves, morphing, and more.
Romain and Chet alone in the recording Studio.
Links:
V9: Vector 9-patches Pathway: Path data querying Android Path Shape Shifter Bézier Primer The Beauty of Bézier CurvesChet: @chethaase
Romain: @romainguy -
We recorded episode 191 from the studio in the London office, where Rebecca Franks from the developer relations team joined Chet as a guest host. We talked with Andrei Shikov, Matvei Malkov, and Andrey Kulikov from the Jetpack Compose engineering team about layouts, especially the lazy ones, which are the Compose equivalent of RecyclerView.
Rebecca, Chet, Andrei, Andrey, and Matvei, in the London recording studio.
Links:
Layouts in Compose Compose Custom layouts ADB 167: Jetpack Compose LayoutChet: @chethaase
Romain: @romainguy
Tor: @tornorbye
Rebecca Franks: @riggaroo
Andrei Shikov: @shikasd_
Matvei Malkov: @matvei_jj
Andrey Kulikov: @and_kulikov
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In this episode, Tor and Chet learn some more about performance from Carmen. Carmen works on the Android Platform Performance team and is an expert on everything related to performance. This is the perfect episode for you if you ever wanted to learn more about R8, perfetto, baseline profiles, custom performance tracing, power metrics, etc.
Tor, Carmen, and Chet
Links:
Perfetto Android’s guide to app performance Baseline profiles Benchmarking with Microbenchmark and Macrobenchmark Jetpack Tracing library Jetpack JankStats library
Chet: @chethaase
Romain: @romainguy
Tor: @tornorbye
Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs
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In this episode (the first in-studio-with-guests recording since early 2020!), Tor and Chet spoke with Marc Bächinger, Toni Heidenreich, and Andrew Lewis from the Android Media team, where they work on video technologies and APIs like ExoPlayer. We talked about the evolution of ExoPlayer and platform media capabilities as well as ongoing and near-future features.
Back: Chet and Tor, Front: Mark, Toni, and Andrew
Links:
Introduction to Media3 ExoPlayer on GitHub Guide for migrating to Media3 Jetpack Media3 on GitHub Subscribe to Android Developers → https://goo.gle/AndroidDevsChet: @chethaase
Romain: @romainguy
Tor: @tornorbye
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