Android Developers Backstage

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, romainguy@androiddev.social Tor: threads.net/@tor.norbye and tornorbye@androiddev.social Chet: @chethaase, threads.net/@chet.haase, and chethaase@androiddev.social   Catch videos on YouTube → https://goo.gle/adb-podcast   Subscribe to Android Developers  → https://goo.gle/AndroidDevs 

This podcast discusses new devices, tool improvements, AndroidX features and libraries, Jetpack Compose releases, and AI/ML. They also talk about their experiences with foldable phones, challenges in testing and debugging, and improving performance in the upcoming versions of compose.

Aurimas Liutikas from the AndroidX team talks about performance tuning Gradle builds, remote caching, and tracking API compatibility with Metalava. They also discuss code optimization in Gradle, cross-sharing knowledge, understanding Gradle in Android development, and versioning and stability of AndroidX libraries and APIs.

Greg Baker and Joe Baker-Malone join to discuss exciting new Android Studio features made possible by Firebase integration. Topics include physical device streaming, going from crash reports to code, and app quality insights with Firebase Crashlytics.

Ken Russell and Corentin Wallez from the WebGPU team join Chet and Romain to discuss the genesis and capabilities of WebGPU, the state of WebGL, and the transition from WebGL to WebGPU. They explore the adoption of WebGPU in native applications and Android development, the development of Vulkan, the controversy surrounding shading languages for WebGPU, GPU programming, and the challenges faced by Java applets in web deployment. Discover the exciting future of WebGPU and its compatibility with different devices and browsers.

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 romainguy@androiddev.social Tor: tor.norbye@threads and tornorbye@androiddev.social Chet: @chethaase and chethaase@androiddev.social Leland: @intelligibabble George: @georgemount1 Chuck: @chuckjaz   Catch ADB on YouTube → https://goo.gle/adb-podcast   Subscribe to Android Developers → https://goo.gle/AndroidDevs 

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

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 

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 romainguy@androiddev.social Tor: @tornorbye and tornorbye@androiddev.social Chet: @chethaase and chethaase@androiddev.social Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs 

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