Slider

Functions summary

Unit
@Composable
Slider(
    value: Float,
    onValueChange: (Float) -> Unit,
    modifier: Modifier,
    enabled: Boolean,
    valueRange: ClosedFloatingPointRange<Float>,
    steps: @IntRange(from = 0) Int,
    onValueChangeFinished: (() -> Unit)?,
    interactionSource: MutableInteractionSource?,
    colors: SliderColors
)

Material Design slider
Cmn

Functions

Slider

Cmn 
@Composable
fun Slider(
    value: Float,
    onValueChange: (Float) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    valueRange: ClosedFloatingPointRange<Float> = 0f..1f,
    steps: @IntRange(from = 0) Int = 0,
    onValueChangeFinished: (() -> Unit)? = null,
    interactionSource: MutableInteractionSource? = null,
    colors: SliderColors = SliderDefaults.colors()
): Unit

Material Design slider

Sliders allow users to make selections from a range of values.

Sliders reflect a range of values along a bar, from which users may select a single value. They are ideal for adjusting settings such as volume, brightness, or applying image filters.

Sliders image

Use continuous sliders to allow users to make meaningful selections that don’t require a specific value:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.Slider
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var sliderPosition by remember { mutableStateOf(0f) }
Column(modifier = Modifier.padding(horizontal = 16.dp)) {
    Text(text = "%.2f".format(sliderPosition))
    Slider(value = sliderPosition, onValueChange = { sliderPosition = it })
}

You can allow the user to choose only between predefined set of values by specifying the amount of steps between min and max values:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Slider
import androidx.compose.material.SliderDefaults
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var sliderPosition by remember { mutableStateOf(0f) }
Column(modifier = Modifier.padding(horizontal = 16.dp)) {
    Text(text = sliderPosition.roundToInt().toString())
    Slider(
        value = sliderPosition,
        onValueChange = { sliderPosition = it },
        valueRange = 0f..100f,
        onValueChangeFinished = {
            // launch some business logic update with the state you hold
            // viewModel.updateSelectedSliderValue(sliderPosition)
        },
        // Only allow multiples of 10. Excluding the endpoints of `valueRange`,
        // there are 9 steps (10, 20, ..., 90).
        steps = 9,
        colors =
            SliderDefaults.colors(
                thumbColor = MaterialTheme.colors.secondary,
                activeTrackColor = MaterialTheme.colors.secondary,
            ),
    )
}
Parameters
value: Float

current value of the Slider. If outside of valueRange provided, value will be coerced to this range.
onValueChange: (Float) -> Unit

lambda in which value should be updated
modifier: Modifier = Modifier

modifiers for the Slider layout
enabled: Boolean = true

whether or not component is enabled and can be interacted with or not
valueRange: ClosedFloatingPointRange<Float> = 0f..1f

range of values that Slider value can take. Passed value will be coerced to this range
steps: @IntRange(from = 0) Int = 0

if positive, specifies the amount of discrete allowable values between the endpoints of valueRange. For example, a range from 0 to 10 with 4 steps allows 4 values evenly distributed between 0 and 10 (i.e., 2, 4, 6, 8). If steps is 0, the slider will behave continuously and allow any value from the range. Must not be negative.
onValueChangeFinished: (() -> Unit)? = null

lambda to be invoked when value change has ended. This callback shouldn't be used to update the slider value (use onValueChange for that), but rather to know when the user has completed selecting a new value by ending a drag or a click.
interactionSource: MutableInteractionSource? = null

an optional hoisted MutableInteractionSource for observing and emitting Interactions for this slider. You can use this to change the slider's appearance or preview the slider in different states. Note that if null is provided, interactions will still happen internally.
colors: SliderColors = SliderDefaults.colors()

SliderColors that will be used to determine the color of the Slider parts in different state. See SliderDefaults.colors to customize.