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abstract class LayoutReference
Represents a ConstraintLayout item that requires a unique identifier. Typically a layout or a helper such as barriers, guidelines or chains.
Summary
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Last updated 2025-05-15 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-05-15 UTC."],[],[],null,["# LayoutReference\n===============\n\nArtifact: [androidx.constraintlayout:constraintlayout-compose](/jetpack/androidx/releases/constraintlayout) \n[View Source](https://cs.android.com/search?q=file:androidx/constraintlayout/compose/ConstraintLayoutBaseScope.kt+class:androidx.constraintlayout.compose.LayoutReference) \nAdded in [1.1.1](/jetpack/androidx/releases/constraintlayout#1.1.1)\n\n\n```\nabstract class LayoutReference\n```\n\n\u003cbr /\u003e\n\nKnown direct subclasses \n[ConstrainedLayoutReference](/reference/kotlin/androidx/constraintlayout/compose/ConstrainedLayoutReference), [HorizontalChainReference](/reference/kotlin/androidx/constraintlayout/compose/HorizontalChainReference), [VerticalChainReference](/reference/kotlin/androidx/constraintlayout/compose/VerticalChainReference) \n\n|--------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [ConstrainedLayoutReference](/reference/kotlin/androidx/constraintlayout/compose/ConstrainedLayoutReference) | Represents a layout within a [ConstraintLayout](/reference/kotlin/androidx/constraintlayout/compose/package-summary#ConstraintLayout(androidx.compose.ui.Modifier,kotlin.Int,androidx.compose.animation.core.AnimationSpec,kotlin.Function0,kotlin.Function1)). |\n| [HorizontalChainReference](/reference/kotlin/androidx/constraintlayout/compose/HorizontalChainReference) | Represents a horizontal chain within a [ConstraintLayout](/reference/kotlin/androidx/constraintlayout/compose/package-summary#ConstraintLayout(androidx.compose.ui.Modifier,kotlin.Int,androidx.compose.animation.core.AnimationSpec,kotlin.Function0,kotlin.Function1)). |\n| [VerticalChainReference](/reference/kotlin/androidx/constraintlayout/compose/VerticalChainReference) | Represents a vertical chain within a [ConstraintLayout](/reference/kotlin/androidx/constraintlayout/compose/package-summary#ConstraintLayout(androidx.compose.ui.Modifier,kotlin.Int,androidx.compose.animation.core.AnimationSpec,kotlin.Function0,kotlin.Function1)). |\n\n*** ** * ** ***\n\nRepresents a [ConstraintLayout](/reference/kotlin/androidx/constraintlayout/compose/package-summary#ConstraintLayout(androidx.compose.ui.Modifier,kotlin.Int,androidx.compose.animation.core.AnimationSpec,kotlin.Function0,kotlin.Function1)) item that requires a unique identifier. Typically a layout or a helper such as barriers, guidelines or chains.\n\nSummary\n-------\n\n| ### Public functions |\n|-----------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `open operator `[Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html) | [equals](/reference/kotlin/androidx/constraintlayout/compose/LayoutReference#equals(kotlin.Any))`(other: `[Any](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-any/index.html)`?)` |\n| `open `[Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html) | [hashCode](/reference/kotlin/androidx/constraintlayout/compose/LayoutReference#hashCode())`()` |\n\nPublic functions\n----------------\n\n### equals\n\n```\nopen operator fun equals(other: Any?): Boolean\n``` \n\n### hashCode\n\n```\nopen fun hashCode(): Int\n```"]]
