How to get expandable items in recyclerview?

Question

I want to display recyclerview with sub items which needs to expand/collapse.

For example,

Main Item 1 (expand)

--- Child Item 1 (expand) ------- sub Item 1 ------- sub Item 2

--- Child Item 2 (expand) ------- sub Item 1

Main Item 2 (expand)

--- Child Item 1 (expand) ------- sub Item 1 ------- sub Item 2

--- Child Item 2 --- Child Item 3

Main Item 3 Main Item 4

When I click on mainitem it needs to show child items and when I click on child item 1 it needs to expand and display sub items.

How to do this in Android recyclerview..

Nitish · Answer 1 · 2021-09-06T08:20:11.837

1

Instead of recyclerview , you can use expandable recyclerview

compile 'com.thoughtbot:expandablerecyclerview:1.4'

Edit:
To create your own custom expandable recycler view, you can use ConcatAdapter to achive this. Refer to this article for more details:
https://medium.com/codeshake/create-an-expandable-recyclerview-with-the-mergeadapter-254fd671fa5b

edited Sep 06 '21 at 08:20

answered Sep 06 '21 at 04:47

Nitish

Without using third party library need to implement this.. – user2384424 Sep 06 '21 at 08:07
You can refer to this article on how to create your own expandable recycler view [link](https://medium.com/codeshake/create-an-expandable-recyclerview-with-the-mergeadapter-254fd671fa5b) – Nitish Sep 06 '21 at 08:12

score 0 · Answer 2 · answered Sep 06 '21 at 08:36

0

ExpandableListView is the best option i can think of right now.

Please note, that it's NOT based on RecyclerView, but on ListView, but that should only matter if you have tons of items

answered Sep 06 '21 at 08:36

m.reiter

2 Answers2