AdapterList to display item in Vertically kotlinlang #compose

Yeah right now it only supports vertical orientation but I expect support for horizontal in the future. It’s similar to RecyclerView in that it loads the items in a more efficient/performant manner. The VerticalScroller/HorizontalScroller are more similar to ScrollView than they are to RecyclerView.

in that they load all items eagerly

Adam Powell

06/01/2020, 6:03 PM

we've been having some discussions about how to best handle orientation and different layouts. At the moment I am of the opinion that they should be different composables and those should be as straightforward to write as static layouts are using the

Layout

composable, which would mean different vertical and horizontal list composables in a manner similar to

Row

and

Column

being distinct, as compared to

LinearLayout

with an orientation parameter

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Part of this is that more parameters force an implementation to become much more complex to deal with the combinatorics of options, which in turn makes it that much harder to add new options or to write a similar component with some small differences

to accomplish this we need to improve the API ergonomics around performing subcomposition of child items; as you can see from

AdapterList.kt

this is possible today but pretty raw

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Andrey Kulikov

06/01/2020, 6:08 PM

And yes, we do have plans to provide vertically scrolling Adapter List in the near future

Vinay Gaba

06/01/2020, 6:35 PM

I would vote for having a separate implementation for the orientation too and potentially renaming AdapterList to something else. It would make the API’s more consistent with the rest of the composables.

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