Dicoding Developer Coaching merupakan webinar, yang membahas tuntas kendala maupun pertanyaan yang sering ditanyakan di Academy Dicoding. Tema kali ini adalah "Memahami ViewModel & LiveData Lebih Dalam" Di sini Anda akan belajar mengenai apa itu ViewModel dan LiveData. Seperti yang pernah dibahas sebelumnya, Architecture Components menyediakan kelas ViewModel untuk membantu UI controller menyiapkan data yang akan ditampilkan ke UI (Activity or Fragment). Sedangkan LiveData merupakan Lifecycle-Aware dan juga sering berkaitan dengan ViewModel. Ini artinya LiveData dapat merespon perubahan yang ada di Lifecycle (Activity, Fragment, atau Service) untuk kebutuhan menampilkan dan menyiapkan data.

1. Memahami ViewModel & LiveData
Lebih Dalam
Alfian Yusuf Abdullah
Google Associate Android Developer, Code Reviewer Dicoding

2. ViewModel
Part of Android Jetpack

3. The ViewModel class is designed to store and manage UI-related data in a
lifecycle conscious way. The ViewModel class allows data to survive
configuration changes such as screen rotations.
https://developer.android.com/topic/libraries/architecture/viewmodel
Android Jetpack
ViewModel Overview

4. Lifecycle of ViewModel
Android Jetpack

5. ViewModel Implementation
Android Jetpack

6. Android Jetpack

7. Android Jetpack

8. Android Jetpack

9. Don’t save all about Context
References!
Android Jetpack

10. And how to access Context?
Android Jetpack

11. Use AndroidViewModel!
Android Jetpack

12. Android Jetpack

13. LiveData
Part of Android Jetpack

14. ● Ensures your UI matches your data state
● No memory leaks
● No crashes due to stopped activities
● No more manual lifecycle handling
● Always up to date data
● Proper configuration changes
Android Jetpack
The advantages of using LiveData

15. LiveData Implementation
Android Jetpack

16. Android Jetpack

17. Some tips when use
LiveData
Android Jetpack

18. Don’t use Fragment as LifecycleOwner of LiveData
Android Jetpack

19. Don’t use Fragment as LifecycleOwner of LiveData
Android Jetpack

20. Don’t exposing LiveData as mutable to views
Android Jetpack

21. Don’t exposing LiveData as mutable to views
Android Jetpack

22. Don’t exposing LiveData as mutable to views
Android Jetpack

23. Don’t exposing LiveData as mutable to views
Android Jetpack

24. Don't put observe function at the event handling
Android Jetpack

25. Don't put observe function at the event handling
Android Jetpack

26. Contact:
@alfianyabdullah
THANKS!
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