Compose Modifier
Common
```kotlin
@ExperimentalMaterial3ExpressiveApi
fun Modifier.animateFloatingActionButton(
visible: Boolean,
alignment: Alignment,
targetScale: Float = FloatingActionButtonDefaults.ShowHideTargetScale,
scaleAnimationSpec: AnimationSpec? = null,
alphaAnimationSpec: AnimationSpec? = null,
): Modifier
```
Apply this modifier to a `FloatingActionButton` to show or hide it with an animation, typically
based on the app's main content scrolling.
#### Parameters
| | |
| --- | --- |
| visible | whether the FAB should be shown or hidden with an animation |
| alignment | the direction towards which the FAB should be scaled to and from |
| targetScale | the initial scale value when showing the FAB and the final scale value when hiding the FAB |
| scaleAnimationSpec | the `AnimationSpec` to use for the scale part of the animation, if null the Fast Spatial spring spec from the `MotionScheme` will be used |
| alphaAnimationSpec | the `AnimationSpec` to use for the alpha part of the animation, if null the Fast Effects spring spec from the `MotionScheme` will be used |