Episode 213: Compose runtime and performance

Join Tor and Siva Velusamy and Sandhya Mohan from the Android Studio team to learn about the latest updates to Studio Bot (Gemini in Android Studio) that dropped at Google I/O 2025 including Agent Mode. Building on their conversation from two years ago about the Studio Bot, they explore Gemini’s role in every stage of development, from design to building, testing, and maintenance, the future of coding companions, and more. Studio Bot podcast episode → https://goo.gle/3ZM0Wwx     

Software Engineers Dustin Lam and Yigit Boyar join host Tor Norbye to chat all about Kotlin Multiplatform.  Resources: Tor’s Bluesky → https://goo.gle/4iLXEAg  Yigit’s Bluesky → https://goo.gle/4dmsYVj

What is app safety for Android? What is the Android team working on to ensure developers and users alike enjoy safe and reliable apps? Watch along as Tor Norbye, Chet Haase, Romain Guy, Theresa Khuu, Naheed Vora take a deep dive backstage and discuss what’s new in the Android safety space.   Resources: Enhanced Tools for Secure & Efficient Development → https://goo.gle/42lo3i8   Watch more Android Developers Backstage → https://goo.gle/adb-podcast Subscribe to Android Developers → https://goo.gle/AndroidDevs    #Featured #Android #AndroidDevelopersBackstage Speakers: Tor Norbye, Chet Haase, Romain Guy, Theresa Khuu, Naheed Vora

In this episode, Tor and Romain chat with Leland and Chuck from the Compose team about performance -- recent optimizations, upcoming optimizations, and challenges. Leland: @intelligibabble.bsky.social Chuck: @chuckjaz.bsky.social Tor: @tornorbye.bsky.social Romain: @romainguy, @romainguy.dev, [email protected] Catch videos on YouTube → https://goo.gle/adb-podcast   Subscribe to Android Developers  → https://goo.gle/AndroidDevs  #Featured #Compose #AndroidDevelopersBackstage   

In this episode Chet, Romain and Tor chat with Xav and Jamal from the Android Studio team to talk about the history of Android’s IDE.   Chapters: Intro (00:00) Topic of the day - Android Studio releases (00:59) What was before Android studio? (2:33) Eclipse (7:22) Jamal joins Android (13:56) Android studio 1.0 (16:40) Android studio 1.0 - launch (21:56) Android studio 3.0 (25:17) Differences after the Kotlin announcement (28:02) Studio 2.1 big complaints (31:32) Code names in Android (33:23) Favorite versions of Android Studio (38:01) Team growth 2010 - 2017 (41:22) Android Studio 4.0 - motion editor (43:26) Gradle (45:27) Profilers (53:06) Regrets? (54:04) Favorite features? (56:37) Wrap up (59:53) Links: Android Studio → https://goo.gle/36F8fcS  Android Studio 1.0 → https://goo.gle/4h4X68z  Announcing Android Studio → https://goo.gle/3EapKGH    Jamal: https://www.linkedin.com/in/jamaleason Xavier: ducrohet.bsky.social  Romain: @romainguy, @romainguy.dev, [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    #Featured #Android #AndroidDevelopersBackstage  

In this episode Chet, Romain and Tor chat with Shai Barack about how the Android platform team studies performance and understands system health - and what is system health anyway? We talk about measuring performance, deciding trade-offs, and our favorite tools such as Perfetto, Compiler Explorer, and Android Studio's Memory Profiler.   Chapters: Intro (00:00) System health (0:27) Efforts to make apps more efficient (3:35) Telemetry data (5:59) Trade offs between long battery life and good performance (8:21) Scheduling groups (10:38) Static drain (13:32) Collaborating with App developers vs operating system (19:10) High refresh rates (23:26) Reach vs engagement (32:02) What tools does your team use to optimize performance? (34:10) Godbolt.org (37:09) Demystifying (39:39) The best tools are multi-player (43:52) R8 or R-Not? (45:42) Optimizing for feature sets (48:05) Tools, not Rules (50:08) What are the tools I should be aware of as an app developer looking to upscale performance? (54:36) Allocation tracker (55:37) Open source tools (57:08) Useful resources for devs to understand various tools (59:04) Final thoughts (1:06:19) Links: Compiler Explorer → https://goo.gle/3Zbq6DV  Perfetto → https://goo.gle/3OtD3UK and https://goo.gle/3B3S3p5  Tools, not Rules  → https://goo.gle/416CyY7    Shai:  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

In this episode Chet, Romain and Tor chat with Sebastiano about how the Android Studio team builds UIs. We talk about how Compose for Desktop is used in parts of Android Studio and how the Compose Markdown renderer available in the Jewel library makes Studio Bot tick.   Chapters: Intro (00:00) Android Dev UX team (00:39) What kind of libraries and languages are used to build Android studio? (1:52) Swing (2:53) Reactive and declarative programming models (8:25) SKIA for Kotlin (10:01) Jetpack Compose widgets (11:54) Jewel (13:07) Text rendering across platforms (15:51) Differences in behaviors (17:40) Support for markdown files (20:26) What is markdown? (21:25) Swing and html (25:45) Selection handling in StudioBot (28:46) Boosting productivity with Compose (30:40) Standalone vs plugin artifacts (34:29) The difference between Jewel & Swing (35:30) HTML vs Markdown (39:31) Markdeep (41:53) Jewel's Markdown API (43:46) Where to find Jewel? (46:54) Sebastiano’s podcast - Code with the Italians (47:34) Final thoughts (49:13)   Links: Jetpack Compose Compose Multiplatform, for Desktop  Jewel Jewel Markdown Renderer   Sebastiano: ​​https://github.com/rock3r, https://codewiththeitalians.it/ 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 

In this episode Chet, Romain and Tor chat with Doris Liu from the Compose team about animations in Compose -- covering everything from the basic primitives up to the recently added Shared Element Transitions.   Chapters: Intro (00:00) Animation capabilities of Compose (1:06) Different types of animation specs (3:43) Layers of functionality, transitions (7:49) TargetBasedAnimation (9:48) Vectors & velocity of color change (12:43) Second layer parallel to animation spec (16:39) Animation interruptions (18:48) Motion layout problem-solving (20:19) Both scale and move in question (25:45) Different mental models for layout animation in Compose vs. View (26:20) Shared element (31:05) Are there things you wish more people were aware of? (34:19) What's the tooling story for this? (41:57) What is Look Ahead? (43:16) All software is regret (48:49) New API: Modifier.animateBounds (51:52) How to reach Doris – leave a comment (55:57) Motion Frame of Reference Placement (57:29) Wrap up (59:10) Links: Shared element tutorial → https://goo.gle/3XrGYp5  Shared element talk → https://goo.gle/47tm3qm  A quick guide to compose animations → https://goo.gle/3Tm853p  The API layers except the highest level APIs we chatted about in the podcast → https://goo.gle/3MGsiNE Doris: @doris4lt 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 more Android Developers Backstage on YouTube → https://goo.gle/adb-podcast    Subscribe to Android Developers YouTube → https://goo.gle/AndroidDevs 

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 

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