canvas-simple-animation.kt

val height = with(LocalDensity.current) {
    LocalConfiguration.current.screenHeightDp.dp.toPx()
}
val position = remember {
    mutableStateOf(1)
}
val yOffset by animateFloatAsState(
    targetValue = if (position.value == 0) {
        height / 2
    } else {
        height
    },
    animationSpec = tween(
        durationMillis = 3000,
        easing = FastOutSlowInEasing
    )
)
Canvas(
    modifier = Modifier.offset {
        IntOffset(x = 200, y = yOffset.toInt())
    },
    onDraw = {
        drawContext.canvas.nativeCanvas.drawText(
            text = "hi",
            x = 0f,
            y = 0f,
            paint = TextPaint().apply {
                color = Color.WHITE
                textSize = 84f
            }
        )
    }
)
Button(
    onClick = {
        position.value = (position.value + 1) % 2
    },
    modifier = Modifier.align(Alignment.BottomCenter)
) {
    Text(text = "Animate")
}