Android Development in 2019. #devFestDakar

It's all about the tools we can use to build better android apps.

Transcript

1. About me •Souleymane Sidibé •Kotlin/Android dev •Android developer CoinAfrique •Developer of KobiriApp •@soulesidibe
2. Android development in 2019 @soulesidibe 2
3. The purpose of this talk
4. The purpose of this talk • The tools • How we build android apps • Is it worth it to build native apps • ⤴ Flutter, Ionic, React native ⤴ = native apps
5. Numbers
6. Numbers • Android 1.0 (Relese date 2008) • Android 2.3 (Relese date 2011) Gingerbread • Android 10 (2019) Source: Statcounter
7. Numbers • 76% of the Mobile Operating system market share. Worldwide • 83% of Africa Market share • 90% of Senegal Market share • 40% of OS market share behind Windows. Source: Statcounter
8. Numbers • The most popular OS in Africa • The most accessible OS (cheap phones) • An open OS • Millions of apps available
9. Build an android App
10. Basic tools
11. Build an android App Compatible with Java Great Tooling Null Safety Easy to learn Coroutines Java is not dead yet Type inference
12. Build an android App
13. Build an android App
14. Build an android App
15. Build an android App Android App Bundle Dynamic Feature Instant App Play Console Internal Test
16. And so many more…
17. Architecture A style and method of design and construction.
18. Architecture • Onboarding new devs is easier • Focus on the feature not on the plumbing • The team speak the same language • Write testable code • Team size: 1+
19. Architecture • Old Android (XML Activity) • MVP (Model View Presenter) • MVVM (Model View ViewModel)
20. Google Opinion
21. Testing
22. Test • FOR ME • UI Testing is mandatory • Unit testing is good • 100% coverage means nothing
23. Test • Unit Testing(Junit, Mockito, etc) • UI Testing (Espresso, Robolectric) • Firebase Test Lab
24. Wrap up
25. Wrap up • Native android development is stable • Still evolving • Huge community(Conferences, open source, libraries) • At scale, “native is best”
26. Alternatives
27. Alternatives • React Native(js) • Ionic(js) • Flutter(dart)
28. Pros • One code base/one team • Well known web technologies • Easy to find talented devs
29. Cons • One code base but 2 targets • Javascript • Some native features not available for both android and IOS
30. Conclusion • Android for life! • But Flutter is really great • Learn both!
31. Thanks!