Coroutine x Retrofit - Android Developer Day

Explain alternative solution to handler asynchronous processing made easily on Android with Coroutine and Simple Implementation about (Flow & Channel).

Transcript

1. Coroutine Retrofit Android Developer Day
2. Raka Adi Nugroho Software Engineer @Tokopedia Kadang nongkrong di www.blogtoandroid.com github.com/rakaadinugroho medium.com/rakaadinugroho
3. Say Hello to Coroutine What is that Why Coroutine? What can Coroutine Do? Agenda Coroutine met Retrofit
4. Coroutine Basic Usage Feel Code with Coroutine Goals Explore more about Coroutine
5. Lagging?
6. Lagging? oh no!
7. Asynchrony refers to the occurrence of events independent of the main program flow and ways to deal with such events - wikipedia
8. On Android
9. On Android
10. Google developers highly recommend using Kotlin Coroutines for doing asynchronous work and when integrating Jetpack.
12. Coroutine? A coroutine is a concurrency design pattern that you can use on Android to simplify code that executes asynchronously.
13. Coroutine? The Kotlin team defines coroutines as “lightweight threads” Coroutines similar to Threads Coroutine #1 Coroutine #N Thread
14. Concurrency?Parallel?
15. Concurrency? Parallel?
16. Concurrency? Parallel? Concurrency is Structure | Parallel is execution
17. Suspending Coroutine #1 Thread Backbone of Coroutine
18. Suspending
19. Job Cancellable has Lifecycle Destroy(s) when Complete Deffered Implement Job await() to get Result Coroutine Job
20. launch fire forget return as Job async fire giving result return as Deffered runBlocking Blocks current Thread Coroutine Builder
21. 1 2 3
22. 1 2 3
23. 1 2 3
24. Solve 2 Primary Problem Manage long-running tasks that might otherwise block the main thread and cause your app to freeze. Providing main-safety, or safely calling network or disk operations from the main thread.
25. Solve 2 Primary Problem Manage long-running tasks that might otherwise block the main thread and cause your app to freeze. Providing main-safety, or safely calling network or disk operations from the main thread.
26. Http Communication
28. Welcome! Retrofit 2.6.0
29. Before 2.6.0
30. After 2.6.0
31. After 2.6.0 1 2 3
32. Jetpack
33. 1 2 Jetpack Suspend Search Journal Coroutine # Search Resume Search Journal
34. Jetpack
35. 1 2 Jetpack
37. Hmmm... Suspending Function Just Return Single Result!
38. Coroutines Flow
39. Coroutines Flow
40. Coroutines Flow 1 2 3
41. Coroutines Flow
42. Coroutines Flow
43. How to transfer a stream of values?
44. Coroutine Channel(s)
45. Channels provide a way to transfer a stream of values.
46. Channel
47. illustration - Problem
48. illustrations - Solution
49. Sample - 1 1 2 3
50. Sample - 2 1 2
51. Sample - 2 1 2
52. Sample - 2 1 2
53. Wrap Up > Coroutines make asynchronous easily > Support to Several Android JetPack > Kotlin! yeah > Coroutine could be Alternative Solution
54. Reference https://medium.com/ua-makers/impressions-of-google-i-o-2019-kotlin-coroutines-19b6af1e0e3 https://developer.android.com/kotlin/coroutines https://proandroiddev.com/kotlin-coroutines-channels-csp-android-db441400965f
 https://medium.com/@elye.project/understanding-suspend-function-of-coroutines-de26b070c5ed Coroutine 101 - Kotlin Everywhere