How can create FloatingActionButton on the top of the keyboard in jetpack compose

Question

How can create FloatingActionButton on the top of the keyboard but if keyboard is hidden, then in the bottom of the screen?

FloatingActionButton(
         modifier = Modifier
                    .padding(bottom = 2.dp, end = 2.dp),
         onClick = { visible = !visible },
         ) {
            Icon(
                 imageVector = Icons.Outlined.Send,
                 contentDescription = "Send"
                 )
         }