How to prevent autoscroll on LazyColumn update if item index

Question

How to prevent autoscroll on LazyColumn update if item index 0 is not visible

K Merle · Answer

Every new item that arrives as index 0 makes scroll move for that item height

FunkyMuse · Answer

Can you share the code

K Merle · Answer

I am unable to share code as it s company project Should adding an new item to an index 0 not move scroll for that same height amount

Dmitrii Smirnov · Answer

and we are unable to answer questions like I can t show you what I do but what am I doing wrong

K Merle · Answer

I am asking a question in a sense of is something true or false Sorry for not being able to share code

K Merle · Answer

`Should adding an new item to an index 0 not move scroll for that same height amount `

Dmitrii Smirnov · Answer

nobody ask you to violate NDA you can easily share some part of it replacing sensitive data with something just like in previous question

Dmitrii Smirnov · Answer

generally it works like i want some behavior from this code and it works in another way plz help

K Merle · Answer

Lol okay mate Here it is ```val lazyListState = rememberLazyListState LazyColumn state = lazyListState reverseLayout = true modifier = modifier items messages item gt MessageItem item ```

Abhinav Suthar · Answer

If you don t provide key then index is used as key Now assume this nth item is focused and another item at index 0 is added So now new nth item previously n 1 th item is now focused Try providing unique key per item message to items extention function

K Merle · Answer

Thanks This solved issue I was using sealed class for my data and sealed class did not contain any properties Passing an id to a sealed class and as a key inside `items key= id ` solved an issue

K Merle · Answer

My first issue was solved with keys but I ve found different issue now Scrolling to the end of list and Navigating from Screen A that contains this LazyColumn to Screen B and returning does not position scroll correctly Using something like this solves the problem but looks like hack Am I missing something Worth mentioning is that I am showing messages and pictures from the device storage with Coil ``` val itemOffset = rememberSaveable mutableStateOf 0 LaunchedEffect itemOffset lazyListState animateScrollToItem lazyListState firstVisibleItemIndex itemOffset value SideEffect itemOffset value = lazyListState firstVisibleItemScrollOffset ```

John Nichol · Answer

For your second issue you need to hoist the LazyListState up so that it is remembered by whatever is composing Screen A Otherwise a new LazyListState is going to be created and this contains the scroll position