Fill max width in horizontally scrollable lazy column in Jetpack Compose

Question

I want to have a vertical lazy list of items where each item take parent width when horizontal scroll isn't available, otherwise max IntrinsicWidth among all children.

I know roughly how to do this with SubcomposeLayout. But it requires to implement by hand laziness logic which is hard to do without occasionally harming performance. And also Subcompose layout will compose each element twice which is also bad.

So question is how to implement such logic without painfully creating LazyList from the ground up?

Here is minimal code that i've tried. I use fillParentMaxWidth modifier but it doesn't work. fillMaxWidth also dindn't work because when i use horizontalScroll modifier on parent it passes unbounded constraints to its children and fillMaxWidth is just being ignored.

width(IntrinsicSize.Max) modifier on LazyColumn also didn't work because "Intrinsic measurements are not currently supported by SubcomposeLayout"

LazyColumn(
    modifier = Modifier
        .fillMaxSize()
        .horizontalScroll(rememberScrollState()),
) {
    repeat(20) {
        item {
            Text(
                text = "$it ................................",
                modifier = Modifier
                    .fillParentMaxWidth()
                    .background(Color.Gray)
            )
        }
    }
}

Code output

Yunnosch · Accepted Answer · 2024-09-29 11:37:13Z

0

I recomemnd using a Row with horizontal scroll in each item.

edited Sep 29, 2024 at 11:37

Yunnosch

26.8k9 gold badges46 silver badges66 bronze badges

answered Sep 29, 2024 at 2:28

wenhaiz

1

Sign up to request clarification or add additional context in comments.

2 Comments

Yunnosch Over a year ago

Welcome to StackOverflow. Please, edit and try for How to Answer, describe the effect of what you propose and explain why it helps to solve the problem. Consider taking the tour.

Community Over a year ago

Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.

Collectives™ on Stack Overflow

Fill max width in horizontally scrollable lazy column in Jetpack Compose

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related