Hey :wave: Does Compose support drag and drop? I ...

# compose

[Michał Jurczyk]

Hey 👋
Does Compose support drag and drop?
I have a LazyColumn of cards and want to drag'n'drop items onto the cards from a picker.
In native UI I used to do it with setOnDragListener listening to ACTION_DROP and clipData 🤔

[Michał Jurczyk]

I was thinking about using an invisible AndroidView composable in each card, with all the listeners, but wanted to make sure I am not missing something obvious before I started hacking 😅

[Zach Klippenstein (he/him) [MOD]]

I’m not sure how it interops with LazyColumn, but have you seen dragGestureFilter?
https://developer.android.com/reference/kotlin/androidx/compose/ui/gesture/package-summary#(androidx.compose.ui.Modifier).dragGestureFilter(androidx.compose.ui.gesture.DragObserver,%20kotlin.Function1,%20kotlin.Boolean)

[Michał Jurczyk]

Yeah, but this seems to be mostly for local drags, with no interactions between the dragged Composable and the one below 🤔 And there is no drop callback, only the onStop on the dragged Composable, with offset as param. I guess I could do some calculation based on the offset, but no idea where to take it from there, especially in LazyColumn 🤔

[Zach Klippenstein (he/him) [MOD]]

Would be good to have system drag/drop support from the clipboard API too, although i wonder if that’s a feature anyone actually uses.

[Michał Jurczyk]

Good point, this is one of these features that feel most useful for press demos 😅

[Michał Jurczyk]

Anyway, thanks a lot for the tip ☺️ I will try diving a bit deeper into it and if I can not get it to work, the AndroidView placeholder it is for now.

[Zach Klippenstein (he/him) [MOD]]

Couldn’t hurt to file an issue for drag/drop support while you’re at it. Issue tracker link is in the channel description.