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#compose-wear
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y
Yingding Wang
12/27/2022, 1:07 PMIn
horologist==0.2.5NavGraphBuilder.scalingLazyColumnComposablelistComposable Copy code
@Deprecated(
"Use listComposable"
)
public fun NavGraphBuilder.scalingLazyColumnComposable(NavGraphBuilder.scrollableNavGraphBuilder.scalingLazyColumnComposablelistComposablescrollablelistComposableNavGraphBuilderlazyListComposabley
yschimke
12/27/2022, 9:21 PMSorry, I should have put better explanations in the kdocs.
The scalingLazyColumnComposable wasn't a good name, scrollable was much closer to existing navigation dsl.
These functions give you a state object that is linked to an existing position indicator.
So scrollable is ScalingLazyListState, listComposable is LazyListState.
I'll write up a cleaner sample of scrollable and post it here.
While documentation is sparse there are samples in the horologist/sample module for all of these
listComposablescrollablelazyListComposablescrollStateComposableThis shows a comparison of the built in composable, scalingLazyColumn, and scrollable https://github.com/yschimke/horologist/blob/8a47a9bd7bce3b8ca65424da03cf40bb8c34d7[…]n/java/com/google/android/horologist/scratch/ScratchActivity.kt
Compared to scalingLazyColumnComposable, it lays out from the top, without providing a custom scrollStateBuilder. And configures the other params correctly.
Compared to composable, it also wires up PositionIndicator and TimeText scrollAway.
y
Yingding Wang
12/28/2022, 12:47 PM@yschimke Thanks for your hint. This is fantastic, i got it now.
y
yschimke
12/29/2022, 1:23 AMYou can configure initial layout with a factory param.
Copy code
scrollable(
route = "menu",
// optional method to configure initial layout
columnStateFactory = ScalingLazyColumnDefaults.belowTimeText(
rotaryMode = Fling,
firstItemIsFullWidth = false
)
) {
com.google.android.horologist.compose.layout.ScalingLazyColumn(
modifier = Modifier.fillMaxSize(),
columnState = it.columnState,
) {23 Views