A presentation on RecyclerViews and DiffUtils on Android. Link to app repository: https://github.com/DSC-Binus-KMG-2019/workshop5-final-class-5

1. Recycle View and
DiffUtil
And many other things!

2. Bina Nusantara Kemanggisan
More Android!

3. Bina Nusantara Kemanggisan
A RecyclerView is used to repeat views and to display dynamic lists.
RecyclerView are made up of a few components
● Adapter
● Layouts
RecyclerView

4. Bina Nusantara Kemanggisan
Adapters are used to manage data in the RecyclerView
Adapters usually have methods of binding data to the RecyclerView layout
Adapter

5. Bina Nusantara Kemanggisan
Layouts are the design of the RecyclerView.
Layouts are designed for a single list item, and will be repeated for each data.
Layout

6. Bina Nusantara Kemanggisan
DiffUtils are used in RecyclerViews to add new items to
the dynamic list. It’s main purpose is to differentiate between
the old and the new RecyclerView list and update it accordingly
DiffUtil

7. Bina Nusantara Kemanggisan
A dictionary is a class made for the purpose of list management.
Dictionaries usually contain methods of getting the list data or generate data.
Dictionary

8. Bina Nusantara Kemanggisan
ViewHolders are usually in RecyclerView Adapters and
is a part of the adapter that is going to bind data to the layout.
ViewHolder

9. Bina Nusantara Kemanggisan
Today is going to be quite
straightforward...

10. Bina Nusantara Kemanggisan
Today we are going to continue...

11. Bina Nusantara Kemanggisan

12. Bina Nusantara Kemanggisan
We are going to make...

13. Bina Nusantara Kemanggisan

14. Bina Nusantara Kemanggisan
DiffUtil.calculateDiff(DiffUtilCallback)
calculateDiff is a command to get the difference between lists.
Code Highlight
● DiffUtilCallback is a separate class that has methods
to differentiate between lists and extends
DiffUtil.Callback

15. Bina Nusantara Kemanggisan
https://github.com/DSC-Binus-KMG-2019/workshop5-final
Link to This Week’s Repo

16. Bina Nusantara Kemanggisan
https://github.com/DSC-Binus-KMG-2019/workshop5-final-class-5
Link to This Week’s Class Repo

17. Bina Nusantara Kemanggisan
https://developer.android.com/reference/android/support/v7/util/DiffUtil
References

18. Bina Nusantara Kemanggisan
that’s all for today folks!