Android Developers Backstage

Tor, Don, Chet, and Phil, on a video conference on Tor's machine. VCs are critical to mitigating (but not actually solving) latency issues with remote podcasts. In this first ever full-remote episode, Tor and Chet discuss audio programming with Don Turner from the Android DevRel team, and Phil Burk from the Android Audio Framework team. They chat about Oboe, low-latency audio, audio performance in general, etc. And because Don and Phil know everything about audio, more time was spent before the recording discussing how to properly record the episode than was spent actually recording the episode. Subscribe to the podcast feed or download the audio file directly. If you enjoyed this episode you might also be interested in episode 39, about MIDI audio with Phil Burk.

Phil: @philburk Don: @donturner Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Dustin Elm.

Rahul (Work), Sumir (Manager), and Chet In this episode, Chet talks with Sumir Kataria and Rahul Ravikumar from the Android Toolkit team about Work Manager! Tune in to learn about work manager, an AndroidX library for deferrable background work, and recent changes such as on demand initialization, new lint checks, and more! Subscribe to the podcast feed or download the audio file directly. Relevant Talks:

• Working with WorkManager, from the 2018 Android Dev Summit
• WorkManager: Beyond the basics, from the 2019 Android Dev Summit

Releases & Bugs:

• Recent releases
• Link for filing issues: https://issuetracker.google.com/issues/new?component=409906&template=1094197

Sumir: @SumirKodes Rahul: @tikurahul Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

Kweku, Makoto, Amith, Chet, Romain, and Tor In this episode, Chet talked with Amith Yamasani, Makoto Onuki, and Kweku Adams from the framework team about power management. We waxed poetic about the heuristics the system uses to kill tasks, doze mode and how the system tries to save battery, TrimMemory requests, JobScheduler (the underlying platform facility used by WorkManager), AppStandby buckets, and more. Favorite word: OOMAdjust (Out of Memory Adjustment, but I far prefer the abbreviation) Subscribe to the podcast feed or download the audio file directly. Links:

• App Standby Buckets
• Optimizing for Battery Life
• Improve Battery Life with Restrictions (presentation at ADS 2018)

Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

Mike, Romain, Yigit, and Chet In this episode, Chet and Romain talk with Yigit Boyar, from the Jetpack team, and Mike Nakhimovich from Dropbox. Mike and Yigit have been working on an Open Source library called Store. Store helps with the fetching, caching, storing and sharing of data in your application. Both Yigit and Mike used this opportunity to teach Chet and Romain about the repository pattern, how Store works, what makes building a library like Store challenging and much more. Subscribe to the podcast feed or download the audio file directly. Links:

• Store on Github
• Room

Mike: @friendlymikhail Yigit: @ yigitboyar Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

Adam, Romain, Tor, and Chet, on location in the fancy and totally upscale ADB recording studio In this episode, Tor, Romain, and Chet talk with Adam Powell from the UI Toolkit team about Jetpack Compose. The conversation meandered into declarative programming, reacting to state changes, data flowing through an application, and Kotlin domain-specific languages. Subscribe to the podcast feed or download the audio file directly. Links:

• Jetpack Compose overview
• Jetpack Compose tutorial

Adam: @adampwp Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

Tor, Nicolas, John, Romain and Chet in the Android Studio In this episode, Tor, Romain and Chet chit chat with Nicolas Roard and John Hoford from the Android Studio team about Motion Layout -- and ConstraintLayout and visual editing in the IDE. In the recording session they also promised to release ConstraintLayout 2.0 beta 4 before the podcast was released. And they achieved that: https://androidstudio.googleblog.com/2019/12/constraintlayout-200-beta-4.html. Subscribe to the podcast feed or download the audio file directly. Links:

• Constraintlayout codelab: https://developer.android.com/training/constraint-layout
• MotionLayout codelab: https://codelabs.developers.google.com/codelabs/motion-layout
• MotionLayout workshop with John and Nicolas from DroidconSF: https://camaelon.github.io/
• ConstraintLayout reference page: https://developer.android.com/reference/androidx/constraintlayout/widget/ConstraintLayout
• MotionLayout reference page: https://developer.android.com/reference/androidx/constraintlayout/motion/widget/MotionLayout
• MotionLayout page: https://developer.android.com/training/constraint-layout/motionlayout
• MotionLayout examples: https://developer.android.com/training/constraint-layout/motionlayout/examples
• ConstraintLayout and MotionLayout github samples: https://github.com/android/views-widgets-samples/tree/master/ConstraintLayoutExamples
• Medium article on MotionLayout: https://medium.com/google-developers/introduction-to-motionlayout-part-i-29208674b10d

Nicolas: @camaelon John: @johnhoford Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

Michael, Chet and Romain in the cozy London recording studio. In this episode, Chet and Romain travel all the way to London to have a chat with Michael Wright. This is not Michael's first time on the podcast and one again the discussion is about displays, input devices and haptics. If you want to learn more about high refresh rate displays (90/120 Hz), HDR, audio-coupled haptics, how gamepads are supported and, curiously, about the Android API council, you found the right episode! Subscribe to the podcast feed or download the audio file directly. Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

We forgot to take a picture of ourselves when we recorded this. Please use your imagination. In this episode, Chet and Florina Muntenescu (from the Android Developer Relations team) talk with Dom Elliott from the Google Play team about Android App Bundles and other Google Play features. App bundles are the new packaging format for Android apps. They allow you to upload a single version of your app, then Google Play can distribute optimized versions of that app to users, depending on device-specific capabilities, like the selected locale(s) on the device. We also talked about other recent Google Play features (related to bundles and not), such as on-demand delivery and in-app updates. Subscribe to the podcast feed or download the audio file directly. Links: App bundles samples On-Demand modules codelab Plaid sample Build a Modular Android App Architecture (Google I/O 2019) Navigating Your Way Around Customizable Delivery (Android Dev Summit 2019) Florina: @FMuntenescu Dom: @iamdom Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

Tor, Jerome, Chris and Xavier in the recording studio. In this episode, Tor chats with Jerome Dochez, Chris Warrington and Xavier Ducrohet from the Android Studio build system team. We discuss a lot of topics -- the new speed attribution feature in 4.0, the effort to create new APIs for plugin authors, and a lot more. Subscribe to the podcast feed or download the audio file directly. Jerome: @dochez Xav: @droidxav Tor: @tornorbye Chet: @chethaase Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.

Allen, Chris, Adam, part of Tor, Dan (taking the photo), and Chet. All of them are also in the monitor, but backwards. Oh, and note the gym sock being used to dampen noise on the mic. High tech stuff, ADB. In this episode, Chet and Tor talk with Chris Banes, Adam Cohen, Dan Sandler, and Allen Huang about Gesture Navigation. Gesture Nav is an important UI behavior change in the Android 10 release that developers should handle and test. Chris has written Gesture Nav articles recently. This conversation goes further into the background and reasons for the change, as well as techniques for dealing with it. Note: The audio in this episode, is not up to the usual quality bar. We had the choice between recording the conversation with a non-ideal setup or not doing it at all. We chose content over quality. Subscribe to the podcast feed or download the audio file directly. Links: Gesture Navigation: Going edge-to-edge (I) Gesture Navigation: Handling visual overlaps (II) Gesture Navigation: Handling gesture conflicts (III) Gesture Navigation: Immersive Modes (IV) Chris: @chrisbanes Dan: @dsandler Chet: @chethaase Tor: @tornorbye Romain: @romainguy Thanks to continued tolerance and support by our audio engineer, Bryan Gordon.