如何在 LazyColumn Jetpack Compose 中的项目之间添加分隔符？

Question

I have a LazyColumn that looks like this:

LazyColumn (
    verticalArrangement = Arrangement.spacedBy(12.dp)
) {
    items(bookList) { book ->
        InProgressBookItem(book = book)
    }
}

How can I add a line between each item in the list, similar to using an item decoration on the old RecyclerView?

Answer 1

Currently with 1.0.x you can just add a Divider in the LazyListScope .

Something like:

   LazyColumn(
        verticalArrangement = Arrangement.spacedBy(12.dp),
    ) {
        items(itemsList){
            Text("Item at  $it")
            Divider(color = Color.Black)
        }
    }

If you want to avoid the Divider in the last items you can use:

   LazyColumn(
        verticalArrangement = Arrangement.spacedBy(12.dp),
    ) {
        itemsIndexed(itemsList) { index, item ->
            Text("Item at index $index is $item")
            if (index < itemsList.size-1)
                Divider(color = Color.Black, thickness = 1.dp)
        }

    }

Answer 2

Simple:

LazyColumn (
    verticalArrangement = Arrangement.spacedBy(12.dp)
) {
    items(bookList) { book ->
        InProgressBookItem(book = book)
        Divider(color = Color.Black, thickness = 1.dp)
    }
}