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LazyVerticalGrid

A lazy vertical grid layout. It composes only visible rows of the grid.

Last updated:

Installation

dependencies {
   implementation("androidx.compose.foundation:foundation:1.7.0-beta03")
}

Overloads

@Composable
fun LazyVerticalGrid(
    columns: GridCells,
    modifier: Modifier = Modifier,
    state: LazyGridState = rememberLazyGridState(),
    contentPadding: PaddingValues = PaddingValues(0.dp),
    reverseLayout: Boolean = false,
    verticalArrangement: Arrangement.Vertical =
        if (!reverseLayout) Arrangement.Top else Arrangement.Bottom,
    horizontalArrangement: Arrangement.Horizontal = Arrangement.Start,
    flingBehavior: FlingBehavior = ScrollableDefaults.flingBehavior(),
    userScrollEnabled: Boolean = true,
    content: LazyGridScope.() -> Unit
)

Parameters

namedescription
columnsdescribes the count and the size of the grid's columns, see [GridCells] doc for more information
modifierthe modifier to apply to this layout
statethe state object to be used to control or observe the list's state
contentPaddingspecify a padding around the whole content
reverseLayoutreverse the direction of scrolling and layout. When true, items will be laid out in the reverse order and [LazyGridState.firstVisibleItemIndex] == 0 means that grid is scrolled to the bottom. Note that [reverseLayout] does not change the behavior of [verticalArrangement], e.g. with [Arrangement.Top] (top) 123### (bottom) becomes (top) 321### (bottom).
verticalArrangementThe vertical arrangement of the layout's children
horizontalArrangementThe horizontal arrangement of the layout's children
flingBehaviorlogic describing fling behavior
userScrollEnabledwhether the scrolling via the user gestures or accessibility actions is allowed. You can still scroll programmatically using the state even when it is disabled.
contentthe [LazyGridScope] which describes the content

Code Examples

LazyVerticalGridSample

@Composable
@Sampled
fun LazyVerticalGridSample() {
    val itemsList = (0..5).toList()
    val itemsIndexedList = listOf("A", "B", "C")

    val itemModifier = Modifier
        .border(1.dp, Color.Blue)
        .height(80.dp)
        .wrapContentSize()

    LazyVerticalGrid(
        columns = GridCells.Fixed(3)
    ) {
        items(itemsList) {
            Text("Item is $it", itemModifier)
        }
        item {
            Text("Single item", itemModifier)
        }
        itemsIndexed(itemsIndexedList) { index, item ->
            Text("Item at index $index is $item", itemModifier)
        }
    }
}

LazyVerticalGridSpanSample

@Composable
@Sampled
fun LazyVerticalGridSpanSample() {
    val sections = (0 until 25).toList().chunked(5)
    LazyVerticalGrid(
        columns = GridCells.Fixed(3),
        horizontalArrangement = Arrangement.spacedBy(16.dp),
        verticalArrangement = Arrangement.spacedBy(16.dp)
    ) {
        sections.forEachIndexed { index, items ->
            item(span = { GridItemSpan(maxLineSpan) }) {
                Text(
                    "This is section $index",
                    Modifier
                        .border(1.dp, Color.Gray)
                        .height(80.dp)
                        .wrapContentSize()
                )
            }
            items(
                items,
                // not required as it is the default
                span = { GridItemSpan(1) }
            ) {
                Text(
                    "Item $it",
                    Modifier
                        .border(1.dp, Color.Blue)
                        .height(80.dp)
                        .wrapContentSize()
                )
            }
        }
    }
}