background

Functions summary

Modifier
Modifier.background(color: Color, shape: Shape)

Draws shape with a solid color behind the content.
Cmn
Modifier
Modifier.background(
    brush: Brush,
    shape: Shape,
    alpha: @FloatRange(from = 0.0, to = 1.0) Float
)

Draws shape with brush behind the content.
Cmn

Functions

Modifier.background

Cmn 
fun Modifier.background(color: Color, shape: Shape = RectangleShape): Modifier

Draws shape with a solid color behind the content.

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.padding
import androidx.compose.material.Text
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

Text("Text with background", Modifier.background(color = Color.Magenta).padding(10.dp))
Parameters
color: Color

color to paint background with
shape: Shape = RectangleShape

desired shape of the background

Modifier.background

Cmn 
fun Modifier.background(
    brush: Brush,
    shape: Shape = RectangleShape,
    alpha: @FloatRange(from = 0.0, to = 1.0) Float = 1.0f
): Modifier

Draws shape with brush behind the content.

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.CutCornerShape
import androidx.compose.material.Text
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Brush
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

val gradientBrush =
    Brush.horizontalGradient(
        colors = listOf(Color.Red, Color.Blue, Color.Green),
        startX = 0.0f,
        endX = 500.0f,
    )
Text(
    "Text with gradient back",
    Modifier.background(brush = gradientBrush, shape = CutCornerShape(8.dp)).padding(10.dp),
)
Parameters
brush: Brush

brush to paint background with
shape: Shape = RectangleShape

desired shape of the background
alpha: @FloatRange(from = 0.0, to = 1.0) Float = 1.0f

Opacity to be applied to the brush, with 0 being completely transparent and 1 being completely opaque. The value must be between 0 and 1.