Android Dev Summit 2018

Review of Android Dev Summit 2018, which held on 7-8 November.

Transcript

1. Android Dev Summit Janibek Marshal 7-8 November 2018
2. Istanbul → New York → San Francisco
3. 42 hours of flight. 8 sessions + 1 mini talk. Over 1000 Android Developers.
4. Keynote History and Future of Android Development
5. Celebrating 10 years of Android
6. Get your app ready for foldable phones
7. To Machine Learning First Shifting from Mobile First
8. Smartphones are getting Smarter with ML
9. Android is Everywhere
10. Safety and Wellbeing
11. Android Developer Experience Architect Code Reach
12. Security
14. 80% of top 1,000 apps use new Android Jetpack libraries *we also
15. Android Slices
16. Jetpack: Navigation
17. Build Speed What’s affecting build speed overall: • Expanding code bases • Custom plug-ins • Annotation processors • New languages • Number of modules
18. USB 3 enhances deployment Especially on Android P
19. Chromebook With Android Studio
20. Android App Bundle • Reducing size of application • Have to store release key on Google Play • Enables new cool features Kolesa 45.7%
23. Dynamic Feature Module • Install and Uninstall features on demand • Defer install in the background BASE Kaspi Shop Retush etc
24. Application updates
25. Application updates
26. Instant App Is deprecated Replaced by Google Play Instant
27. Google Play Instant • Limit raised to 10MB • URL is optional • Supported automatically with Android App Bundle
28. Responsible for: 1. Installing modules on demand 2. Managing modules
29. Single Activity
30. What’s Activity? How the Android Framework starts your UI and controls its window positioning
31. Sharing data within an Activity
32. Make navigation great again What challenges appear when we have multiple destinations? Update global UI as the current destination changes Navigating between destinations
34. Then why Fragment Once we enter to activity, system don't care how you handle flow Fragment is easier to create graph
35. Navigation Testing Rule #1 Don’t test at destination level Extract business logic out of your destination Write tests against a ViewModel Fragment Scenario
36. Don’t contort your App architecture Do what’s right for your app
37. Lint Use it on Android Studio and with gradle Lint option → base line = shows only new warnings Very useful tool to check your code
38. Android X testing ActivityScenario FragmentScenario getTargetContext - under testing getContext - instrumentation WTF?! Merged as getApplicationContext()
39. User flow Reactivating user is important as users are updating their phones every 2 years Use "smart Lock for password" And “Autofill”
40. Fun with LiveData
41. Map: X → Y SwitchMap: X → LiveData<Y> Transformation Mediator LiveData - Add Source - Compute Result
42. You can group folders in cache I order to free up together Use content uri instead of file uri - as file requires permission Discover with MediaStore class Storing Why it’s really hard to get simple image from gallery and camera
43. No sessions about Flutter
44. Nothing new, just reviewing Android Suspenders (Coroutines)
45. Sessions about View and Style Thanks to Chiu-Ki Chan
46. @chiuki
47. @chiuki
48. @chiuki
49. Android development in Google
50. Android development at Google 100+ Android App ~2B Lines of code 20K Builds per day 27M Test runs per day
51. Developer workflow Changes get reviewed by peers Development at head (Mono Repo) Testing is a requirement Large CI system 1 2 3 4
53. Project Nitrogen Instrumentation test на Android framework очень сложные Design for any build system Build cross platform Build with extensibility in mind Single configuration
54. Nightmare to maintain
55. Unified solution
56. Running tests at scale with Nitrogen
59. Fireside chat And many more sessions