The making of Falcon Pro 3

Lessons learned from building Falcon Pro 3

1. The making of Falcon Pro 3 Joaquim Verges - @joenrv
2. THE CHALLENGE
3. GEAR UP
4. COMBO! Retrofit + Jackson/Gson + ORM =
5. START CODING Multi Activity vs single Activity Back stack? → new activity! Inside one activity → reusable fragment(s) Notif Notif / Intent filter Notif / Intent filter
6. CACHING: ORMLite vs Realm ORMLite SQLite based. full java, open source Realm TightDB based. Closed source C++ core, open source java bindings
7. OrmLite Realm
8. Writes in OrmLite
9. Writes in Realm
10. Queries in OrmLite
11. Queries in Realm
12. Query performance
13. THREADING AsyncTasks are fine but… could be better:
14. UI RecyclerView or ListView ? Definetly RecyclerView. Slightly annoying API, but worth it.
15. THE BAD: API FAIL Oh google… ListView : 3,905 lines of code + 7,314 lines in AbsListView RecyclerView : One giant class with 8,427 lines of code Requires work to port from listview
16. THE GOOD: - free, extensible insert/remove animations - handles position changes much better - default implementation performs well
17. ANIMATIONS • Activity Transitions • Shared elements
18. ANIMATIONS • Layout Transitions • AnimUtils
19. 60 FPS OR NOTHING
20. RECIPE FOR 60 FPS SCROLLING DONT DO THIS • Deep view hierarchy • Allocations on critical path • Overdraw USE THE PROVIDED TOOLS • GPU rendering profiling • Tracer for OpenGL • Memory Monitor • Allocation tracker
21. PROFILING GPU RENDERING GOOD NOT GOOD
22. DESIGN • sketching • coolors.co • icons https://github.com/konifar/android-material-design-icon-generator-plugin
23. DESIGN FONTWEIGHTS android:font_family ABC regular ABC light ABC slab ABC condensed
24. DESIGN Content first Polish and details
25. CRASH REPORTING & ANALYTICS Crashlytics + Answers • just the metrics you need • solid crash reporting tool only downside: • no custom events
26. SECURITY Paid app? be careful • Proguard • LVL is over hacked • IAP > paid app • custom server logic
27. BETA lessons learned from private BETAs with Google+ communities: Don’t do it. Go public.
28. PUBLISH The poor’s man marketing material: • video: adb shell screenrecord • simple banner • framed screenshots • launcher icon
29. RELEASE EARLY & ITERATE Release too early ? Maybe :)
30. RELEASE EARLY & ITERATE User driven development! • lets the users feel like they’re part of the project. • automatic todo list & great engagement. • fix a user’s problem, he becomes your best customer
31. WAS IT WORTH IT?
32. YOU CAN DO IT TOO!
33. Hit me on Twitter! @joenrv QUESTIONS