Togglesanimated

Expand

Button morphing a plus into a minus to expand or collapse content.

Installation

caveui components are copy-paste Jetpack Compose built entirely on Material 3 — there's no caveui dependency to add. Make sure Material 3 is on your classpath (it ships with the Compose BOM), then copy the Usage snippet below into your project.

kotlin

// build.gradle.kts (module)
dependencies {
    implementation(platform("androidx.compose:compose-bom:2025.06.00"))
    implementation("androidx.compose.material3:material3")
}

Usage

kotlin

@Composable
fun ExpandToggle() {
  var open by remember { mutableStateOf(false) }
  val rotation by animateFloatAsState(
    targetValue = if (open) 180f else 0f,
    label = "rotation",
  )
  IconToggleButton(
    checked = open,
    onCheckedChange = { open = it },
  ) {
    Icon(
      imageVector = if (open)
        Icons.Filled.Remove
      else
        Icons.Filled.Add,
      contentDescription = null,
      modifier = Modifier.graphicsLayer {
        rotationZ = rotation
      },
    )
  }
}