---
title: "LazyLayoutMeasureScope"
description: "The receiver scope of a [LazyLayout]'s measure lambda. The return value of the measure lambda is
[MeasureResult], which should be returned by [layout].

Call [compose] to compose items emitted in a content block for a given index."
type: "interface"
---

<div class='type'>Interface</div>


<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>



```kotlin
sealed interface LazyLayoutMeasureScope : MeasureScope
```


The receiver scope of a `LazyLayout`'s measure lambda. The return value of the measure lambda is
`MeasureResult`, which should be returned by `layout`.

Call `compose` to compose items emitted in a content block for a given index.


## Functions

```kotlin
fun compose(@AndroidXIntRange(from = 0) index: Int): List<Measurable>
```


Compose an item of lazy layout.

#### Parameters

| | |
| --- | --- |
| index | the item index. Should be no larger that `LazyLayoutItemProvider.itemCount`. |


#### Returns

| | |
| --- | --- |
|  | List of `Measurable`s. Note that if you emitted multiple children into the item composable you will receive multiple measurebles. |



```kotlin
@ExperimentalFoundationApi
    fun measure(index: Int, constraints: Constraints): List<Placeable>
```


Subcompose and measure the item of lazy layout.

#### Parameters

| | |
| --- | --- |
| index | the item index. Should be no larger that `LazyLayoutItemProvider.itemCount`. |
| constraints | `Constraints` to measure the children emitted into an item content composable specified via `LazyLayoutItemProvider.Item`. |


#### Returns

| | |
| --- | --- |
|  | List of `Placeable`s. Note that if you emitted multiple children into the item composable you will receive multiple placeables, each of them will be measured with the passed `constraints`. |