IssueTracker

Jetpack Compose version: 1.1.0-alpha02

Jetpack Compose component(s) used: material3

Android Studio Build:

Kotlin version:

Steps to Reproduce or Code Sample to Reproduce:

https://github.com/androidx/androidx/blob/androidx-main/compose/material3/material3/src/commonMain/kotlin/androidx/compose/material3/NavigationBar.kt#L208-L211

@Composable
fun RowScope.NavigationBarItem() {
  // bla, bla
  Box(
        modifier
            .selectable(
                selected = selected,
                onClick = onClick,
                enabled = enabled,
                role = Role.Tab,
                interactionSource = interactionSource,
                indication = null,
            )
            .weight(1f)
            .onSizeChanged {
                itemWidth = it.width
            },
        contentAlignment = Alignment.Center
    ) {
        val animationProgress: Float by animateFloatAsState(
            targetValue = if (selected) 1f else 0f, // <----- setting a fixed target 1f makes customizing the opacity of NavigationBarItem impossible.
            animationSpec = tween(ItemAnimationDurationMillis)
        )
    }
}