Understanding the color choice of every pixel is important when optimizing power. This talk provides a primer on display considerations, describes why darker pixels save power, and what app developers can do to help users save battery life.

Presented by: Chris Banes & Alan Viverette


Android Dev Summit '18 all sessions playlist → http://bit.ly/ADS18-Sessions
Subscribe to the Android Channel! → http://bit.ly/AndroidDevs1

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In this session, we'll talk about internals of the ART runtime, from compiler to garbage collector, and how we're focusing on improving Kotlin performance and application startup.

Presented by: Nicolas Geoffray & David Sehr


Android Dev Summit '18 all sessions playlist → http://bit.ly/ADS18-Sessions
Subscribe to the Android Channel! → http://bit.ly/AndroidDevs1

#AndroidDevSummit

The DayNight functuonality in AppCompat allow your app to easily switch between Theme.AppCompat (dark) and Theme.AppCompat.Light (light)…

With improvements in the ART runtime, developers should feel better about favoring good development patterns over memory-optimized-but-ugly-and-fragile techniques. But all of this is based on assumptions about the improvements of ART over Dalvik — what are the details?
This talk will examine some of the specific improvements that ART has made — over Dalvik and over time — and will demonstrate what these improvements mean for raw performance of garbage allocation and collection work.

Presented by: Chet Hasse & Romain Guy


Android Dev Summit '18 all sessions playlist → http://bit.ly/ADS18-Sessions
Subscribe to the Android Channel! → http://bit.ly/AndroidDevs1

#AndroidDevSummit

Watch the keynote and all sessions → http://bit.ly/ADS18-Sessions

If you’re curious what we covered in our ConstraintLayout session at Android Dev Summit ‘18, watch this recap to get 5 tips to master ConstraintLayout!

1. Use Guidelines to anchor Contraints! Think of it as a new edge of the screen to help you layout your app.

2. Leverage Barriers as ViewGroups and help support multiple languages!

3. Add Constraint directly with the Context Menu, a new feature with Android Studio 3.3. It’s much more precise and should save you tons of undo keystrokes.

4. Take advantage of the new View Options like Show All Constraints and Live Rendering that will help you visualize how things look as you move things around on the Design Surface.

5. Use shortcuts to zoom and pan! We’ve changed the keyboard shortcuts, taking inspiration from design tools like Photoshop and Sketch.

Watch the full session by Sean McQuillan & Chris Sinco → http://bit.ly/2DFXtau

Event site → http://bit.ly/2BjcuPi
Subscribe to the Android…

Watch the keynote and all sessions → http://bit.ly/ADS18-Sessions

Check out the top 7 takeaways on Android App Bundles from this year’s Android Dev Summit!

1. Size matters: bigger apps are more at risk for slower downloads and uninstalls. You shouldn’t have to worry about the tradeoffs of having a bigger app. The new app model makes this a lot easier!

2. The Android App Bundle, the official app publishing format. Apps that have already adopted the bundle are seeing an average size saving of 35%, compared to a universal APK!

3. App developers around the world (like Twitter and Duolingo) have switched to the App Bundle and are seeing size savings.

4. Get android platform optimization and more size savings “out of the box” with uncompressed native libraries!

5. Modularize with dynamic features that can be installed on demand, deferred to a later time, or “fused” into the main app for pre-L devices. These features are all supported in production already.

6. Use the Play Core library to manage modules.…

Watch the keynote and all sessions → http://bit.ly/ADS18-Sessions

Learn the 10 best practices for moving to a single activity!

1. Use activities as entry points into your app’s UI. When a user goes to launch your app, their launching on activity.

2. Share data between screens by using the activity scope!

3. Use the Navigation Architecture Component to make navigating between destinations even easier.

4. Navigate between destinations with the new gradle plugin, Safe args.

5. Extract your business logic, don’t test at the destination level!

6. Test with FragmentScenario! Fragment 1.1 was just released with a new feature for testing and verifying fragments.

7. Mock the NavController to confirm that you’re calling the right navigate calls.

8. Inject dependencies with FragmentFactory.

9. Use multiple tasks when appropriate. Gasp!

10. Don't contort your app architecture. Do what’s right for your app.


Watch the full session by Ian Lake → http://bit.ly/2DxvUzq

Event site → http://bit.ly/2BjcuPi…

JetBrains is hosting two webinars on Kotlin 1.3 this December. Both events aim to explore the most common use cases and the challenges in adopting Coroutines, Kotlin/Native, and Multiplatform Projects