Arch Patterns in Android

Presented online at GDG Kolkata (https://youtu.be/h6g0T7CQbcY).
This presentation talks about Architecture patterns in android, and how to migrate from MVP to MVVM etc.

Transcript

1. Arch Patterns in Android GDG Kolkata Rivu Chakraborty https://www.rivu.dev 1
2. Rivu Chakraborty Sr. Software Engineer - BYJU’S https://rivu.dev Tech Author, Tech Speaker, Android Dev, Kotlin Advocate 2
3. Arch Patterns in Android 3
4. Architecture What is an Architecture 4
5. What’s an Architecture? An Architecture is a Code structure / collection of principles / patterns, that helps better organise code in a project for easy maintenance and future changes. It also enables you to have efficient test case coverages. 5
6. Architecture Where does it come from? What Patterns / Principles 6
7. SOLID Principles 7
8. Every class should have a Single Responsibility Single-Responsibility 8
9. Entities Should be Open for Extension, Closed for Modification Open-Closed 9
10. Let Φ(x) be a property provable about objects x of type T. Then Φ(y) should be true for objects y of type S where S is a subtype of T. Liskov Substitution 10
11. Clients should not be forced to depend upon interfaces that they do not use. Interface Segregation 11
12. A class that uses a dependency, shouldn’t create / know how to create that dependency Depencency Inversion (IoC) 12
13. Layers In an usual Android App 13
14. data presentation ui domain (?) cache remote
15. data presentation ui
16. data 16 Repository LocalDataStore RemoteDataStore AppService / ApiService DB
17. presentation & ui 17 MVP MVI MVVM MvRx mobius
18. Architecture Patterns 18
19. MVP 19 View Interface Contract Presenter Interface tight coupling
20. MVVM 20 ViewModel
21. MVVM + State 21 ViewModel State
22. MVI 22 ViewModel State Action Result Intent
23. Thank You 23 MVP: https://github.com/RivuChk/MovieSearchOMDBMVP MVVM: https://github.com/RivuChk/MovieSearchOMDBMVVM MVVM + State: https://github.com/RivuChk/MovieSearchOMDBMVVMState MVI: https://github.com/RivuChk/Android-MVI-Clean-Arch-Sample https://www.rivu.dev