是否可以让 LazyRow/LazyColumn 在屏幕上显示一定数量的项目而不传递明确的 DP 宽度

Question

Is there a way to make a LazyRow / Row display for example 2 items on the screen simultaneously without measuring the screen width manually and passing the DP width to the children of the LazyRow ?

Current setup example:

LazyRow(
    modifier = Modifier
        .fillMaxWidth()
        .height(200.dp)
) {
    item {
        FirstItem(
            modifier = Modifier.width(
                ScreenUtils.getScreenWidthDP(LocalContext.current) / columnCount
            )
        )
    }
    item {
        SecondItem(
            modifier = Modifier.width(
                ScreenUtils.getScreenWidthDP(LocalContext.current) / columnCount
            )
        )
        )
    }
}

Answer 1

You can use Modifier.fillParentMaxWidth - it's available on LazyItemScope . For example, to display 2 items use fraction = 0.5f :

LazyRow(
    modifier = Modifier
        .fillMaxWidth()
        .height(200.dp)
) {
    item {
        FirstItem(
            modifier = Modifier
                .fillParentMaxWidth(0.5f)
        )
    }
    item {
        SecondItem(
            modifier = Modifier
                .fillParentMaxWidth(0.5f)
        )
    }
}

Answer 2

I'm pretty sure you don't want to use LazyRow . And for Row no problem. Here's the code:

Row(
    modifier = Modifier
        .fillMaxWidth()
        .height(200.dp)
) {
        FirstItem(
            modifier = Modifier.weight(1f)
        )
        SecondItem(
            modifier = Modifier.weight(1f)
        )
}