step progress bar with android compose

Question

Currently I'm trying to find an easy way to implement a step progress bar with compose like this:

Does anyone have experience with that? Is there maybe a good library?

Answer 1

I don't think you need a library from this one, a simple and quick 'do it yourself' solution could be something like this:

@Composable
fun StepsProgressBar(modifier: Modifier = Modifier, numberOfSteps: Int, currentStep: Int) {
    Row(
        modifier = modifier,
        verticalAlignment = Alignment.CenterVertically
    ) {
        for (step in 0..numberOfSteps) {
            Step(
                modifier = Modifier.weight(1F),
                isCompete = step < currentStep,
                isCurrent = step == currentStep
            )
        }
    }
}

@Composable
fun Step(modifier: Modifier = Modifier, isCompete: Boolean, isCurrent: Boolean) {
    val color = if (isCompete || isCurrent) Color.Red else Color.LightGray
    val innerCircleColor = if (isCompete) Color.Red else Color.LightGray

    Box(modifier = modifier) {

        //Line
        Divider(
            modifier = Modifier.align(Alignment.CenterStart),
            color = color,
            thickness = 2.dp
        )

        //Circle
        Canvas(modifier = Modifier
            .size(15.dp)
            .align(Alignment.CenterEnd)
            .border(
                shape = CircleShape,
                width = 2.dp,
                color = color
            ),
            onDraw = {
                drawCircle(color = innerCircleColor)
            }
        )
    }
}

@Preview
@Composable
fun StepsProgressBarPreview() {
    val currentStep = remember { mutableStateOf(1) }
    StepsProgressBar(modifier = Modifier.fillMaxWidth(), numberOfSteps = 5, currentStep = currentStep.value)
}

This will be the result: