androidx.compose.ui

Interfaces

Alignment

An interface to calculate the position of a sized box inside an available space.
Cmn
Alignment.Horizontal

An interface to calculate the position of box of a certain width inside an available width.
Cmn
Alignment.Vertical

An interface to calculate the position of a box of a certain height inside an available height.
Cmn
Modifier

An ordered, immutable collection of modifier elements that decorate or add behavior to Compose UI elements.
Cmn
Modifier.Element

A single element contained within a Modifier chain.
Cmn
MotionDurationScale

Provides a duration scale for motion such as animations.
Cmn

Classes

BiasAbsoluteAlignment

An Alignment specified by bias: for example, a bias of -1 represents alignment to the left/top, a bias of 0 will represent centering, and a bias of 1 will represent right/bottom.
Cmn
BiasAbsoluteAlignment.Horizontal

An Alignment.Horizontal specified by bias: for example, a bias of -1 represents alignment to the left, a bias of 0 will represent centering, and a bias of 1 will represent right.
Cmn
BiasAlignment

An Alignment specified by bias: for example, a bias of -1 represents alignment to the start/top, a bias of 0 will represent centering, and a bias of 1 will represent end/bottom.
Cmn
BiasAlignment.Horizontal

An Alignment.Horizontal specified by bias: for example, a bias of -1 represents alignment to the start, a bias of 0 will represent centering, and a bias of 1 will represent end.
Cmn
BiasAlignment.Vertical

An Alignment.Vertical specified by bias: for example, a bias of -1 represents alignment to the top, a bias of 0 will represent centering, and a bias of 1 will represent bottom.
Cmn
CombinedModifier

A node in a Modifier chain.
Cmn
Modifier.Node

The longer-lived object that is created for each Modifier.Element applied to a androidx.compose.ui.layout.Layout.
Cmn

Objects

AbsoluteAlignment

A collection of common Alignments unaware of the layout direction.
Cmn
ComposeUiFlags

This is a collection of flags which are used to guard against regressions in some of the "riskier" refactors or new feature support that is added to this module.
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Modifier.Companion

The companion object Modifier is the empty, default, or starter Modifier that contains no elements.
Cmn
MotionDurationScale.Key
Cmn

Annotations

ExperimentalComposeUiApi
Cmn
InternalComposeUiApi

Unstable API for use only between compose-ui modules sharing the same exact version, subject to change without notice in major, minor, or patch releases.
Cmn
UiComposable

An annotation that can be used to mark a composable function as being expected to be use in a composable function that is also marked or inferred to be marked as a UiComposable.
Cmn

Extension functions summary

Modifier
Modifier.composed(
    inspectorInfo: InspectorInfo.() -> Unit,
    factory: @Composable Modifier.() -> Modifier
)

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies.
Cmn
Modifier
Modifier.composed(
    fullyQualifiedName: String,
    key1: Any?,
    inspectorInfo: InspectorInfo.() -> Unit,
    factory: @Composable Modifier.() -> Modifier
)

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies.
Cmn
Modifier
Modifier.composed(
    fullyQualifiedName: String,
    vararg keys: Any?,
    inspectorInfo: InspectorInfo.() -> Unit,
    factory: @Composable Modifier.() -> Modifier
)

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies.
Cmn
Modifier
Modifier.composed(
    fullyQualifiedName: String,
    key1: Any?,
    key2: Any?,
    inspectorInfo: InspectorInfo.() -> Unit,
    factory: @Composable Modifier.() -> Modifier
)

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies.
Cmn
Modifier
Modifier.composed(
    fullyQualifiedName: String,
    key1: Any?,
    key2: Any?,
    key3: Any?,
    inspectorInfo: InspectorInfo.() -> Unit,
    factory: @Composable Modifier.() -> Modifier
)

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies.
Cmn
Modifier

Materialize any instance-specific composed modifiers for applying to a raw tree node.
Cmn
Modifier
Modifier.sensitiveContent(isContentSensitive: Boolean)

This modifier hints that the composable renders sensitive content (i.e. username, password, credit card etc) on the screen, and the content should be protected during screen share in supported environments.
Cmn
Modifier

Creates a modifier that controls the drawing order for the children of the same layout parent.
Cmn

Extension functions

composed

Cmn 
fun Modifier.composed(
    inspectorInfo: InspectorInfo.() -> Unit = NoInspectorInfo,
    factory: @Composable Modifier.() -> Modifier
): Modifier

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies. composed may be used to implement stateful modifiers that have instance-specific state for each modified element, allowing the same Modifier instance to be safely reused for multiple elements while maintaining element-specific state.

If inspectorInfo is specified this modifier will be visible to tools during development. Specify the name and arguments of the original modifier.

Example usage:

import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo

// let's create your own custom stateful modifier
fun Modifier.myColorModifier(color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myColorModifier"
                // specify a single argument as the value when the argument name is irrelevant
                value = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo
import androidx.compose.ui.unit.Dp

// let's create your own custom stateful modifier with multiple arguments
fun Modifier.myModifier(width: Dp, height: Dp, color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myModifier"
                // add name and value of each argument
                properties["width"] = width
                properties["height"] = height
                properties["color"] = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )

materialize must be called to create instance-specific modifiers if you are directly applying a Modifier to an element tree node.

composed

Cmn 
fun Modifier.composed(
    fullyQualifiedName: String,
    key1: Any?,
    inspectorInfo: InspectorInfo.() -> Unit = NoInspectorInfo,
    factory: @Composable Modifier.() -> Modifier
): Modifier

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies. composed may be used to implement stateful modifiers that have instance-specific state for each modified element, allowing the same Modifier instance to be safely reused for multiple elements while maintaining element-specific state.

When keys are provided, composed produces a Modifier that will compare equals to another modifier constructed with the same keys in order to take advantage of caching and skipping optimizations. fullyQualifiedName should be the fully-qualified import name for your modifier factory function, e.g. com.example.myapp.ui.fancyPadding.

If inspectorInfo is specified this modifier will be visible to tools during development. Specify the name and arguments of the original modifier.

Example usage:

import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo

// let's create your own custom stateful modifier
fun Modifier.myColorModifier(color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myColorModifier"
                // specify a single argument as the value when the argument name is irrelevant
                value = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo
import androidx.compose.ui.unit.Dp

// let's create your own custom stateful modifier with multiple arguments
fun Modifier.myModifier(width: Dp, height: Dp, color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myModifier"
                // add name and value of each argument
                properties["width"] = width
                properties["height"] = height
                properties["color"] = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )

materialize must be called to create instance-specific modifiers if you are directly applying a Modifier to an element tree node.

composed

Cmn 
fun Modifier.composed(
    fullyQualifiedName: String,
    vararg keys: Any?,
    inspectorInfo: InspectorInfo.() -> Unit = NoInspectorInfo,
    factory: @Composable Modifier.() -> Modifier
): Modifier

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies. composed may be used to implement stateful modifiers that have instance-specific state for each modified element, allowing the same Modifier instance to be safely reused for multiple elements while maintaining element-specific state.

When keys are provided, composed produces a Modifier that will compare equals to another modifier constructed with the same keys in order to take advantage of caching and skipping optimizations. fullyQualifiedName should be the fully-qualified import name for your modifier factory function, e.g. com.example.myapp.ui.fancyPadding.

If inspectorInfo is specified this modifier will be visible to tools during development. Specify the name and arguments of the original modifier.

Example usage:

import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo

// let's create your own custom stateful modifier
fun Modifier.myColorModifier(color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myColorModifier"
                // specify a single argument as the value when the argument name is irrelevant
                value = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo
import androidx.compose.ui.unit.Dp

// let's create your own custom stateful modifier with multiple arguments
fun Modifier.myModifier(width: Dp, height: Dp, color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myModifier"
                // add name and value of each argument
                properties["width"] = width
                properties["height"] = height
                properties["color"] = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )

materialize must be called to create instance-specific modifiers if you are directly applying a Modifier to an element tree node.

composed

Cmn 
fun Modifier.composed(
    fullyQualifiedName: String,
    key1: Any?,
    key2: Any?,
    inspectorInfo: InspectorInfo.() -> Unit = NoInspectorInfo,
    factory: @Composable Modifier.() -> Modifier
): Modifier

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies. composed may be used to implement stateful modifiers that have instance-specific state for each modified element, allowing the same Modifier instance to be safely reused for multiple elements while maintaining element-specific state.

When keys are provided, composed produces a Modifier that will compare equals to another modifier constructed with the same keys in order to take advantage of caching and skipping optimizations. fullyQualifiedName should be the fully-qualified import name for your modifier factory function, e.g. com.example.myapp.ui.fancyPadding.

If inspectorInfo is specified this modifier will be visible to tools during development. Specify the name and arguments of the original modifier.

Example usage:

import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo

// let's create your own custom stateful modifier
fun Modifier.myColorModifier(color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myColorModifier"
                // specify a single argument as the value when the argument name is irrelevant
                value = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo
import androidx.compose.ui.unit.Dp

// let's create your own custom stateful modifier with multiple arguments
fun Modifier.myModifier(width: Dp, height: Dp, color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myModifier"
                // add name and value of each argument
                properties["width"] = width
                properties["height"] = height
                properties["color"] = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )

materialize must be called to create instance-specific modifiers if you are directly applying a Modifier to an element tree node.

composed

Cmn 
fun Modifier.composed(
    fullyQualifiedName: String,
    key1: Any?,
    key2: Any?,
    key3: Any?,
    inspectorInfo: InspectorInfo.() -> Unit = NoInspectorInfo,
    factory: @Composable Modifier.() -> Modifier
): Modifier

Declare a just-in-time composition of a Modifier that will be composed for each element it modifies. composed may be used to implement stateful modifiers that have instance-specific state for each modified element, allowing the same Modifier instance to be safely reused for multiple elements while maintaining element-specific state.

When keys are provided, composed produces a Modifier that will compare equals to another modifier constructed with the same keys in order to take advantage of caching and skipping optimizations. fullyQualifiedName should be the fully-qualified import name for your modifier factory function, e.g. com.example.myapp.ui.fancyPadding.

If inspectorInfo is specified this modifier will be visible to tools during development. Specify the name and arguments of the original modifier.

Example usage:

import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo

// let's create your own custom stateful modifier
fun Modifier.myColorModifier(color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myColorModifier"
                // specify a single argument as the value when the argument name is irrelevant
                value = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.debugInspectorInfo
import androidx.compose.ui.unit.Dp

// let's create your own custom stateful modifier with multiple arguments
fun Modifier.myModifier(width: Dp, height: Dp, color: Color) =
    composed(
        // pass inspector information for debug
        inspectorInfo =
            debugInspectorInfo {
                // name should match the name of the modifier
                name = "myModifier"
                // add name and value of each argument
                properties["width"] = width
                properties["height"] = height
                properties["color"] = color
            },
        // pass your modifier implementation that resolved per modified element
        factory = {
            // add your modifier implementation here
            Modifier
        }
    )

materialize must be called to create instance-specific modifiers if you are directly applying a Modifier to an element tree node.

materialize

Cmn 
fun Composer.materialize(modifier: Modifier): Modifier

Materialize any instance-specific composed modifiers for applying to a raw tree node. Call right before setting the returned modifier on an emitted node. You almost certainly do not need to call this function directly.

sensitiveContent

Cmn 
fun Modifier.sensitiveContent(isContentSensitive: Boolean = true): Modifier

This modifier hints that the composable renders sensitive content (i.e. username, password, credit card etc) on the screen, and the content should be protected during screen share in supported environments.

Parameters
isContentSensitive: Boolean = true

whether the content is sensitive or not. Defaults to true.

zIndex

Cmn 
fun Modifier.zIndex(zIndex: Float): Modifier

Creates a modifier that controls the drawing order for the children of the same layout parent. A child with larger zIndex will be drawn on top of all the children with smaller zIndex. When children have the same zIndex the original order in which the parent placed the children is used.

Note that if there would be multiple zIndex modifiers applied for the same layout the sum of their values will be used as the final zIndex. If no zIndex were applied for the layout then the default zIndex is 0.

import androidx.compose.foundation.layout.Box
import androidx.compose.material.Text
import androidx.compose.ui.Modifier
import androidx.compose.ui.zIndex

Box {
    Text("Drawn second", Modifier.zIndex(1f))
    Text("Drawn first")
}