Android Paging 3 jetpack 撰写如何在导航返回时滚动到顶部或重置分页

Question

I have been stuck on this for a while now. I have implemented Paging 3 with jetpack compose along with a remote mediator (Room Database) and its working fine. I just want to reset the paging and scroll to the top of the list when I navigate back to the screen of the paged list. animateToScroll(0) does not work it just scrolls the list on top of the current page. What I want is reset the entire list and start again like when its first opened.

Answer 1

I now have the same need and I solved it like this.

@HiltViewModel
class IndexViewModel @Inject constructor() : ViewModel() {

    ...

    var pageFlow by mutableStateOf<Flow<PagingData<Item>>>(flowOf())
        private set

    init {
        combine(section, sort, retry, ...) 
        { ... }
        .mapLatest {params->

            coroutineScope{
                val pager = Pager(...) {...}
            
                pageFlow = pager.flow.cachedIn(this)
            }

        }.launchIn(viewModelScope)
    }

or the same with viewModelScope.launch and .collectLatest