hey there guys! Anyone with experience on nesting a LazyColumn within a NestedScrollView so that we ...

# compose

[dave]

hey there guys! Anyone with experience on nesting a LazyColumn within a NestedScrollView so that we keep the app bar behavior working? We get this

java.lang.IllegalStateException: Nesting scrollable in the same direction layouts like LazyColumn and Column(Modifier.verticalScroll()) is not allowed. If you want to add a header before the list of items please take a look on LazyColumn component which has a DSL api which allows to first add a header via item()

[Zun]

The message clearly explains why it isn’t possible. Alternatively you could use the Item {} block inside LazyColumn

[dave]

thing is the message does not reflect current scenario

[dave]

I do already have sticky headers in place but need now to include it as a view of an traditional android view which already has an appBar with scrolling behavior

[Albert Chang]

Here is why it isn't allowed. You can either implement the app bar in Compose or use RecyclerView with ComposeView.

[ion]

The CoördinatorLayout doesn't work with a LazyColumn, but wrapping a LazyColumn in a ScrollView isn't the solution here.

There should be a way to forward the nested scroll events from a LazyColumn to the CoördinatorLayout

[dave]

think the same as @ion. Also considering the "fully interoperable api"

[dave]

@Albert Chang thanks and yes that sounds like a partial solution but will work, basically RecyclerView instead of LazyColumn, Frankenstein 😄

[dave]

thanks a lot guys, helpful ideas came from this. Kind regards!

[Timo Drick]

Maybe the nestedScroll modifier is helpful: https://developer.android.com/reference/kotlin/androidx/compose/ui/input/nestedscroll/package-summary#(androidx.compose.ui.[…]estedScrollDispatcher)