Loader

Loader.kt

@Composable
fun Loader(isLoading: Boolean) {
    Column(Modifier.fillMaxSize()) {

        Column(modifier = Modifier
            .fillMaxWidth()
            .weight(1f), horizontalAlignment = Alignment.CenterHorizontally, verticalArrangement = Arrangement.Center) {
            val transition = rememberInfiniteTransition()
            val rotation by transition.animateFloat(
                initialValue = 0f,
                targetValue = 360f,
                animationSpec = infiniteRepeatable(
                    animation = tween(800, easing = LinearEasing)
                )
            )

            Box(
                Modifier
                    .rotate(rotation)
                    .background(Color.Red)
                    .size(40.dp))
        }

        // Should stick to bottom when loading, otherwise center itself in empty space
        Crossfade(targetState = isLoading) {
            Text(if (it) "Loading" else "Done")
        }

        // Should "stick" to bottom
        Text(modifier = Modifier
            .background(Color.Blue)
            .fillMaxWidth()
            .padding(), text = "Footer placeholder", textAlign = TextAlign.Center)
    }
}