Using MVVM with Android Data-Binding

Repo demo: https://github.com/nongdenchet/android-data-binding

Transcript

1. MVVM with Test Android Meetup Saigon, 07-11-2015
2. Vũ Huy Quân (Rain Vu) • Member of APIDEZ • I am a developer for 2 years /nongdenchet (Quan Vu) rain@apidez.com
3. MVVM with Test 1. Model - View - ViewModel 2. Unit Test 3. Demo 4. Question and Answer
4. What is MVVM ?
5. View ViewModel Model Binding Notify Notify Update MVVM (Model - View - ViewModel)
6. View Render the UI components. Contain view logic. Get notifications from ViewModel. Contain binding logic.
9. ViewModel Have no information about View. Represent the state of View. Contain commands. Notify View and update Model.
12. Model Contain business logic. Notify ViewModel. Describe how data can be manipulated.
13. Advantages Separate view logic and business logic. Work independently on each layer. Loose coupling. Easy to write unit test.
14. Disadvantages O v e r k i l l fo r s i m p le application. Harder for debugging.
15. Unit Test with MVVM
16. Why need writing unit test? Reduce bugs in existing features. Good documentation. Reduce cost of change. Improve design. Allow refactoring.
17. Separate concern of UI code. Fully describes state of View. Act like POJO class. Easy to write unit test. ViewModel
18. Demo
19. Reference http:/ /stackoverflow.com/questions/67299/is-unit-testing- worth-the-effort http:/ /developer.android.com/tools/testing/index.html http:/ /msdn.microsoft.com/en-us/library/hh848246.aspx http:/ /realm.io/news/data-binding-android-boyar-mount/ http://developer.android.com/tools/data-binding/ guide.html
20. Question and Answer Thank you!