Android Developers Backstage

In this episode, Chet, Romain and Tor talk with Chris Craik and Rahul Ravikumar from the toolkit performance team. We talk about the recently released the macrobenchmark tool+library, in addition to other interesting bits like how the benchmark libraries work, how to use them, how they relate to system tracing, how to do performance debugging in general, and even a teaser of future performance instrumentation functionality that the team is working on. Chet, Chris, Rahul (top), Romain, and Tor (bottom), all looking unusually happy. Related info: The Profile your app performance page for an overview of the performance tools and practices we offer. Performance samples Running benchmarks in continuous integration Chris: @chris_craik Rahul: @tikurahul Chet: @chethaase Romain: @romainguy Tor: @tornorbye

In this episode, Chet, Romain and Tor talk with Sara N Marandi, Fred Chung and Erik Wolsheimer about the new privacy features in Android 12, such as the privacy dashboard, and the camera and microphone usage indicators. Guests Eric, Sara and Fred on the top row, and hosts Romain, Tor and Chet on the bottom row. Permission best practices → https://goo.gle/3oVdK02 Android 12 privacy changes → https://goo.gle/2VvmtMl Sara: @snmarandi Fred: @fredchung Eric Chet: @chethaase Romain: @romainguy Tor: @tornorbye

In this episode, Nick and Romain are joined by Filip Pavlis, Jelle Fresen & Jose Alcérreca to talk about Testing in Compose. They discuss how Compose's testing APIs were developed hand-in-hand with the UI toolkit, making them more deterministic and opening up new possibilities like manipulating time. They go on to discuss the semantics tree, interop testing, screenshot testing and the possibilities for host-side testing. Big smiles from Filip, Jose, Romain, Jelle and Nick for the year of testing on Android. Compose Testing guide Compose Testing Cheatsheet Compose Testing codelab Sample Tests: Jetnews, Jetchat, Crane, Rally Screenshot Testing Compose Learning Pathway Romain: @romainguy Filip Pavlis Jelle Fresen Jose: @ppvi Nick: @crafty

In this episode Nick and Chet are joined by Dois Liu and Nader Jawad to discuss Compose's Animation and Graphics systems. They cover their goals to make both systems easier to understand, more consistent and simpler to work with. They explain how they adapted traditionally imperative systems to a declarative world and give an overview of both the high level composables the library offers as well as lower level building blocks you can drop down to for more control. Hosts Chet & Nick speak to Doris and Nader. Compose Graphics guide Compose Animation guide Compose Animation codelab AnimatedContent composable AdvanceTimeBy (testing animations) Compose Learning Pathway Chet: @chethaase Doris: @doris4lt Nader: @nadewad Nick: @crafty

Adarsh Fernando, a Product Manager on the Android Studio team, and Arif Sukoco, a specialist in testing features, dive into the exciting advancements in Android testing. They discuss automated test snapshots that allow developers to analyze failures efficiently. The new Test Matrix tool improves testing across multiple devices, while Gradle-managed virtual devices streamline workflows. They also tackle the challenges of UI testing and the importance of robust testing strategies, emphasizing how innovation is revolutionizing the testing landscape for Android developers.

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

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

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

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

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