Unconventional Android v2

Android presentation given at Boise Code Camp 2015.

To get the most out of this presentation, follow along with the tags on GitHub: https://github.com/codeprogression/bcc-android-2015

Transcript

1. Unconventional Android v2 https://github.com/codeprogression/bcc-android-2015 Unconventional Android v2 | Richard Cirerol | @codeprogression
2. Welcome to Unconventional Android version 2. Why V2? Well, I gave a similar talk last year. I updated it and rev'd it for you. So if you saw my talk last year, don't fret - I have a bunch of new content here. Unconventional Android v2 | Richard Cirerol | @codeprogression
3. Richard Cirerol @codeprogression Unconventional Android v2 | Richard Cirerol | @codeprogression
4. Unconventional Android v2 | Richard Cirerol | @codeprogression
5. I work for a company in the San Francisco Bay Area called Vertigo. Vertigo is a really cool place to work. I get to write Android applications for some pretty high-profile clients. Unconventional Android v2 | Richard Cirerol | @codeprogression
6. We've done apps for NBC Universal (SyFy, USA, and other networks), Microsoft, Radio Disney, GoPro, HBO, Google and more. In addition to Android, we do apps for iOS, Windows, Windows Phone, XBox, Playstation, Roku, and we even do websites. Unconventional Android v2 | Richard Cirerol | @codeprogression
7. (psst! we're hiring!) Oh! Did I mention we are always looking for developers and designers? And we are a primarily-remote workforce. Unconventional Android v2 | Richard Cirerol | @codeprogression
8. DEMO Tags: - 01_start: Get a list of movies - 02_grid_layout: Grid w/ poster art (bad perf) - 03_picasso: Use picasso - 04_detail: Update detail page Unconventional Android v2 | Richard Cirerol | @codeprogression
9. The Three Terrors of the Fire Swamp Unfortunately, we've wandered right into the Fire Swamp Unconventional Android v2 | Richard Cirerol | @codeprogression
10. Three Terrors Bloat Cancerous State Asynchronicity Unconventional Android v2 | Richard Cirerol | @codeprogression
11. Three Terrors Bloat In the main activity, we can't see at a glance what is happening because we are doing too many things here. Same thing with our MovieActivity and Movie View Holder. We have repeated code and misplaced code. How do we tackle bloat? Unconventional Android v2 | Richard Cirerol | @codeprogression
12. The SOLID and DRY Principles Unconventional Android v2 | Richard Cirerol | @codeprogression
13. The SOLID Principles 4 Single Responsibility 4 Open-Closed 4 Liskov Substitution 4 Interface Segregation 4 Dependency Inversion Unconventional Android v2 | Richard Cirerol | @codeprogression
14. The DRY Principle Don't Repeat Yourself Unconventional Android v2 | Richard Cirerol | @codeprogression
15. DEMO Applying Clean Code Principles Tags: - 05_refactor: Move poster uri generation - 06_custom_view: Create custom views Using some clean code principles, we've made the code easier to read and componentized. Unconventional Android v2 | Richard Cirerol | @codeprogression
16. Three Terrors Cancerous State Unconventional Android v2 | Richard Cirerol | @codeprogression
17. Are singletons bad? I don't think singletons are bad. But, I do think they should be scoped and their accessors limited. Unconventional Android v2 | Richard Cirerol | @codeprogression
18. Dependency Injection Unconventional Android v2 | Richard Cirerol | @codeprogression
19. Dependency Injection Dagger 4 http://square.github.io/dagger/ 4 http://github.com/square/dagger Unconventional Android v2 | Richard Cirerol | @codeprogression
20. Dependency Injection From "Managing Your App's Memory" 1 1 http://developer.android.com/training/articles/memory.html Unconventional Android v2 | Richard Cirerol | @codeprogression
21. Now you may have heard that Google advises against dependency injection on Android. But... Unconventional Android v2 | Richard Cirerol | @codeprogression
22. Dependency Injection Dagger 2 4 http://github.com/google/dagger 4 http://google.github.io/dagger/ ...they are actively developing Dagger 2 for use in Android as well as server projects Unconventional Android v2 | Richard Cirerol | @codeprogression
23. Dagger 1 still has reflection components Dagger 2 is 100% code generation Unconventional Android v2 | Richard Cirerol | @codeprogression
24. DEMO Implementing Dagger 2 Tags: - 07_dagger Unconventional Android v2 | Richard Cirerol | @codeprogression
25. Three Terrors Asynchronicity Thread - Handler - Message - Bus AsyncTask - Intent Service - Callbacks So many ways to handle asynchronicity. They all have their place and they all have their drawbacks. Unconventional Android v2 | Richard Cirerol | @codeprogression
26. Functional Reactive Programming Over the last couple years, functional reactive programming has been coming into its own. You may know this better as... Unconventional Android v2 | Richard Cirerol | @codeprogression
27. Functional Reactive Programming Reactive Extensions Reactive Extensions and Android has its own version called... Unconventional Android v2 | Richard Cirerol | @codeprogression
28. Functional Reactive Programming RxAndroid https://github.com/ReactiveX/RxAndroid RxAndroid - which is an extension of RxJava that has some Android-specific APIs Unconventional Android v2 | Richard Cirerol | @codeprogression
29. Working with HTTP in Android 4 AndroidHttpClient (DEPRECATED) 4 DefaultHttpClient (DEPRECATED) 4 UrlConnection 4 OkHttp Unconventional Android v2 | Richard Cirerol | @codeprogression
30. OkHttp A replacement for UrlConnection 4 https://github.com/square/okhttp Unconventional Android v2 | Richard Cirerol | @codeprogression
31. DEMO Using RxAndroid and OkHttp Tags: - 08_okhttp - 09_rx Unconventional Android v2 | Richard Cirerol | @codeprogression
32. The Pit of Despair https://www.youtube.com/watch?v=BbgyppGqBgg Unconventional Android v2 | Richard Cirerol | @codeprogression
33. The Pit of Despair Boilerplate Code Unconventional Android v2 | Richard Cirerol | @codeprogression
34. Boilerplate Code 4 Sucks away at your life Unconventional Android v2 | Richard Cirerol | @codeprogression
35. Boilerplate Code 4 Sucks away at your life 4 Impedes readability Unconventional Android v2 | Richard Cirerol | @codeprogression
36. Boilerplate Code 4 Sucks away at your life 4 Impedes readability 4 Obscures intention Unconventional Android v2 | Richard Cirerol | @codeprogression
37. Code Generation Unconventional Android v2 | Richard Cirerol | @codeprogression
38. Views Butterknife 4 http://github.com/jakewharton/butterknife @InjectView(R.id.poster) ImageView poster; Butterknife.inject(this); Unconventional Android v2 | Richard Cirerol | @codeprogression
39. Extras Android Dart 4 https://github.com/f2prateek/dart @InjectExtra("id") int id; Dart.inject(this); Unconventional Android v2 | Richard Cirerol | @codeprogression
40. Accessors, etc Lombok 4 http://projectlombok.org/features/index.html 4 https://github.com/rzwitserloot/lombok @Getter, @Setter, @ToString, ... Unconventional Android v2 | Richard Cirerol | @codeprogression
41. Parcel Parceler 4 http://parceler.org 4 https://github.com/johncarl81/parceler @Parcel Parcels.wrap(object); Parcels.unwrap(parcelable) Unconventional Android v2 | Richard Cirerol | @codeprogression
42. Logging Timber 4 http://github.com/jakewharton/timber Timber.d("An error occurred", e); Unconventional Android v2 | Richard Cirerol | @codeprogression
43. API Access Retrofit 4 http://github.com/square/retrofit 4 http://square.github.io/retrofit @GET("/configuration") public Observable<Configuration> getConfiguration() Unconventional Android v2 | Richard Cirerol | @codeprogression
44. DEMO Removing Boilerplate Code Tags: - 10_inject: Butterknife and Dart - 11_codegen: Lombok, Parceler Unconventional Android v2 | Richard Cirerol | @codeprogression
45. Thank You Unconventional Android v2 | Richard Cirerol | @codeprogression
46. Vertigo is always looking for the best and brightest! Unconventional Android v2 | Richard Cirerol | @codeprogression