"Nested" RecyclerViews

Question

Hi everyone.

I've come up with an idea for an Android App, and I was thinking how to turn my thoughts into something working. I know how to program for Android even though I'm not that advanced as you might see, so I wanted some tips from you guys who I'm sure will be able to help.

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Idea

I was thinking about an App to organize stuff, see your objects on a list and be able to add, move or remove them from the list.

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Thoughts

I first thought I needed a RecyclerViewto display each item. Then I thought every item itself might be a box, and so be containing other items inside: this brought me to think of a sort of "nested" system of RecyclerViews. Before going too deep into this system I had to clarify each item should have been a Class, each of which should have had a RecyclerView assigned.

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Question

I was wondering how I could make this "nested" system of RecyclerViews. I thought about making a RecyclerView an object, because I need each RecyclerView to display, function and be always the same in any screen of any item. But I don't know what the best way is.

Should I make it an object? How do I create a new RecyclerView through a button so the user can first tap an item and then, eventually, tap a button (inside the item details view for instance) to make it a box item and so create and open a RecyclerView when tapped?

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P.S.

It may seem like multiple questions but it actually is only one: how to add and display a RecycerView when I tap a button inside a details screen of an item, of course automatically (have a reference to that RecyclerView).

Answer 1

You have to create the RecyclerView that holds your items list, let's call it rv_list, this RecyclerView has an adapter that takes each item and adapts it to an xml layout row_item.xml that you should define. Now to make an item itself display its own recyclerview you should put a recyclerview inside row_item.xml and populate it when adapting that item to rv_list inside the method onBindViewHolder.