# ExposedDropdownMenuBoxScope # ExposedDropdownMenuBoxScope Artifact:[androidx.compose.material:material](https://developer.android.com/jetpack/androidx/releases/compose-material) [View Source](https://cs.android.com/search?q=file:androidx/compose/material/ExposedDropdownMenu.kt+class:androidx.compose.material.ExposedDropdownMenuBoxScope) Added in[1.1.0](https://developer.android.com/jetpack/androidx/releases/compose-material#1.1.0) Common/AllAndroid/JVM - Cmn ``` @ExperimentalMaterialApi abstract class ExposedDropdownMenuBoxScope ``` *** ** * ** *** Scope for[ExposedDropdownMenuBox](https://developer.android.com/reference/kotlin/androidx/compose/material/package-summary#ExposedDropdownMenuBox(kotlin.Boolean,kotlin.Function1,androidx.compose.ui.Modifier,kotlin.Function1)). ## Summary | ### Public constructors | |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----| | [ExposedDropdownMenuBoxScope](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#ExposedDropdownMenuBoxScope())`()` | Cmn | | ### Public functions | |----------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----| | [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html) | `@`[Composable](https://developer.android.com/reference/kotlin/androidx/compose/runtime/Composable) [ExposedDropdownMenu](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#ExposedDropdownMenu(kotlin.Boolean,kotlin.Function0,androidx.compose.ui.Modifier,androidx.compose.foundation.ScrollState,kotlin.Function1))`(` ` expanded: `[Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html)`,` ` onDismissRequest: () `->` `[Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html)`,` ` modifier: `[Modifier](https://developer.android.com/reference/kotlin/androidx/compose/ui/Modifier)`,` ` scrollState: `[ScrollState](https://developer.android.com/reference/kotlin/androidx/compose/foundation/ScrollState)`,` ` content: @`[Composable](https://developer.android.com/reference/kotlin/androidx/compose/runtime/Composable)` `[ColumnScope](https://developer.android.com/reference/kotlin/androidx/compose/foundation/layout/ColumnScope)`.() `->` `[Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html) `)` Popup which contains content for Exposed Dropdown Menu. | Cmn | | `abstract `[Modifier](https://developer.android.com/reference/kotlin/androidx/compose/ui/Modifier) | [Modifier](https://developer.android.com/reference/kotlin/androidx/compose/ui/Modifier)`.`[exposedDropdownSize](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#(androidx.compose.ui.Modifier).exposedDropdownSize(kotlin.Boolean))`(matchTextFieldWidth: `[Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html)`)` Modifier which should be applied to an[ExposedDropdownMenu](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#ExposedDropdownMenu(kotlin.Boolean,kotlin.Function0,androidx.compose.ui.Modifier,androidx.compose.foundation.ScrollState,kotlin.Function1))placed inside the scope. | Cmn | ## Public constructors ### ExposedDropdownMenuBoxScope Cmn Added in[1.7.0](https://developer.android.com/jetpack/androidx/releases/compose-material#1.7.0) ``` ExposedDropdownMenuBoxScope() ``` ## Public functions ### ExposedDropdownMenu Cmn Added in[1.5.0](https://developer.android.com/jetpack/androidx/releases/compose-material#1.5.0) ``` @Composable fun ExposedDropdownMenu(     expanded: Boolean,     onDismissRequest: () -> Unit,     modifier: Modifier = Modifier,     scrollState: ScrollState = rememberScrollState(),     content: @Composable ColumnScope.() -> Unit ): Unit ``` Popup which contains content for Exposed Dropdown Menu. Should be used inside the content of[ExposedDropdownMenuBox](https://developer.android.com/reference/kotlin/androidx/compose/material/package-summary#ExposedDropdownMenuBox(kotlin.Boolean,kotlin.Function1,androidx.compose.ui.Modifier,kotlin.Function1)). | Parameters | |---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `expanded: `[Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html) | Whether the menu is currently open and visible to the user | | `onDismissRequest: () `->` `[Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html) | Called when the user requests to dismiss the menu, such as by tapping outside the menu's bounds | | `modifier: `[Modifier](https://developer.android.com/reference/kotlin/androidx/compose/ui/Modifier)` = Modifier` | The modifier to apply to this layout | | `scrollState: `[ScrollState](https://developer.android.com/reference/kotlin/androidx/compose/foundation/ScrollState)` = rememberScrollState()` | a[ScrollState](https://developer.android.com/reference/kotlin/androidx/compose/foundation/ScrollState)to used by the menu's content for items vertical scrolling | | `content: @`[Composable](https://developer.android.com/reference/kotlin/androidx/compose/runtime/Composable)` `[ColumnScope](https://developer.android.com/reference/kotlin/androidx/compose/foundation/layout/ColumnScope)`.() `->` `[Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html) | The content of the[ExposedDropdownMenu](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#ExposedDropdownMenu(kotlin.Boolean,kotlin.Function0,androidx.compose.ui.Modifier,androidx.compose.foundation.ScrollState,kotlin.Function1)) | ### exposedDropdownSize Cmn Artifact:[androidx.compose.material:material](https://developer.android.com/jetpack/androidx/releases/compose-material) [View Source](https://cs.android.com/search?q=file:androidx/compose/material/ExposedDropdownMenu.kt+function:exposedDropdownSize) Added in[1.1.0](https://developer.android.com/jetpack/androidx/releases/compose-material#1.1.0) ``` abstract fun Modifier.exposedDropdownSize(matchTextFieldWidth: Boolean = true): Modifier ``` Modifier which should be applied to an[ExposedDropdownMenu](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#ExposedDropdownMenu(kotlin.Boolean,kotlin.Function0,androidx.compose.ui.Modifier,androidx.compose.foundation.ScrollState,kotlin.Function1))placed inside the scope. It's responsible for setting the width of the[ExposedDropdownMenu](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#ExposedDropdownMenu(kotlin.Boolean,kotlin.Function0,androidx.compose.ui.Modifier,androidx.compose.foundation.ScrollState,kotlin.Function1)), which will match the width of the[TextField](https://developer.android.com/reference/kotlin/androidx/compose/material/package-summary#TextField(androidx.compose.foundation.text.input.TextFieldState,androidx.compose.ui.Modifier,kotlin.Boolean,kotlin.Boolean,androidx.compose.ui.text.TextStyle,kotlin.Function0,kotlin.Function0,kotlin.Function0,kotlin.Function0,kotlin.Boolean,androidx.compose.foundation.text.input.InputTransformation,androidx.compose.foundation.text.input.OutputTransformation,androidx.compose.foundation.text.KeyboardOptions,androidx.compose.foundation.text.input.KeyboardActionHandler,androidx.compose.foundation.text.input.TextFieldLineLimits,androidx.compose.foundation.ScrollState,androidx.compose.ui.graphics.Shape,androidx.compose.material.TextFieldColors,androidx.compose.foundation.interaction.MutableInteractionSource))(if[matchTextFieldWidth](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#(androidx.compose.ui.Modifier).exposedDropdownSize(kotlin.Boolean))is set to true). Also it'll change the height of[ExposedDropdownMenu](https://developer.android.com/reference/kotlin/androidx/compose/material/ExposedDropdownMenuBoxScope#ExposedDropdownMenu(kotlin.Boolean,kotlin.Function0,androidx.compose.ui.Modifier,androidx.compose.foundation.ScrollState,kotlin.Function1)), so it'll take the largest possible height to not overlap the[TextField](https://developer.android.com/reference/kotlin/androidx/compose/material/package-summary#TextField(androidx.compose.foundation.text.input.TextFieldState,androidx.compose.ui.Modifier,kotlin.Boolean,kotlin.Boolean,androidx.compose.ui.text.TextStyle,kotlin.Function0,kotlin.Function0,kotlin.Function0,kotlin.Function0,kotlin.Boolean,androidx.compose.foundation.text.input.InputTransformation,androidx.compose.foundation.text.input.OutputTransformation,androidx.compose.foundation.text.KeyboardOptions,androidx.compose.foundation.text.input.KeyboardActionHandler,androidx.compose.foundation.text.input.TextFieldLineLimits,androidx.compose.foundation.ScrollState,androidx.compose.ui.graphics.Shape,androidx.compose.material.TextFieldColors,androidx.compose.foundation.interaction.MutableInteractionSource))and the software keyboard. | Parameters | |---------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------| | `matchTextFieldWidth: `[Boolean](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html)` = true` | Whether menu should match the width of the text field to which it's attached. If set to true the width will match the width of the text field. |