Why `parentLayoutCoordinates.size` is `0 x 0` for ...

# compose

[theapache64]

Why parentLayoutCoordinates.size is 0 x 0 for the first few items? More inside 🧵

[theapache64]

I’ve the below code

@Composable
fun Test1() {
    LazyRow {
        items(100) { id ->
            Box(
                modifier = Modifier
                    .padding(end = 10.dp)
                    .size(100.dp)
                    .background(Color.Red)
                    .onGloballyPositioned { layoutCoordinates ->
                        println("$id -> parentSize: ${layoutCoordinates.parentLayoutCoordinates?.size}")
                    }
            ){
                Text("$id")
            }
        }
    }
}

and here’s the log

0 -> parentSize: 0 x 0
1 -> parentSize: 0 x 0
2 -> parentSize: 0 x 0
3 -> parentSize: 0 x 0
4 -> parentSize: 0 x 0
5 -> parentSize: 0 x 0
6 -> parentSize: 1080 x 263
7 -> parentSize: 1080 x 263
8 -> parentSize: 1080 x 263
9 -> parentSize: 1080 x 263
... (printing size for rest of the items)

[theapache64]

[theapache64]

As you can see, the size is 0 x 0 for the first 6 items.
Why’s that? 🤔

[Andrey Kulikov]

feel free to file a bug