在我的用户界面中，我有一个recyclerview和一个chip group。每个chip代表不同的调用来更新。当我点击一个chip时，我希望recyclerview会消失，直到加载新数据。RV确实消失了，但是当它再次显示时，它显示旧数据不到一秒钟，然后才改变为新数据。作为参考，我使用了paging codelab-〉www.example.comhttps://developer.android.com/codelabs/android-paging#0
我该怎么修呢？

碎片

我观察分页数据和负载状态如下：

viewLifecycleOwner.lifecycleScope.launch {
        pagingData.collectLatest(customAdapter::submitData)
    }

    viewLifecycleOwner.lifecycleScope.launch {
        customAdapter.loadStateFlow.collect { loadState ->
            header.loadState = loadState.mediator
                ?.refresh
                ?.takeIf { it is LoadState.Error && customAdapter.itemCount > 0 }
                ?: loadState.prepend

            val isListEmpty = loadState.refresh is LoadState.NotLoading && customAdapter.itemCount == 0
            emptyList.isVisible = isListEmpty
            recyclerView.isVisible = loadState.mediator?.refresh is LoadState.NotLoading ||  loadState.source.refresh is LoadState.NotLoading
            progressBar.isVisible = loadState.mediator?.refresh is LoadState.Loading
            retryButton.isVisible = loadState.mediator?.refresh is LoadState.Error && customAdapter.itemCount == 0
            val errorState = loadState.source.append as? LoadState.Error
                ?: loadState.source.prepend as? LoadState.Error
                ?: loadState.append as? LoadState.Error
                ?: loadState.prepend as? LoadState.Error
            errorState?.let {
                Toast.makeText(
                    requireContext(),
                    "\uD83D\uDE28 Wooops ${it.error}",
                    Toast.LENGTH_LONG
                ).show()
            }
        }
    }

下面是我如何更改类别：

chip1.setOnClickListener {
            viewLifecycleOwner.lifecycleScope.launch {
                onCategoryChanged(CustomAction.ChangeCategory(category = CustomCategory.A))
            }
        }
        chip2.setOnClickListener {
            viewLifecycleOwner.lifecycleScope.launch {
                customAdapter.refresh()
                onCategoryChanged(CustomAction.ChangeCategory(category = CustomCategory.B))
            }
        }

视图模型

下面是我如何根据视图模型中的状态类别更新分页数据：

val actionStateFlow = MutableSharedFlow<CustomAction>()
    val changedCategory = actionStateFlow
        .filterIsInstance<CustomAction.ChangeCategory>()
        .distinctUntilChanged()
        .onStart { emit(CustomAction.ChangeCategory(category = initialCategory)) }
    pagingDataFlow = state
        .flatMapLatest {
            when (it.category) {
                CustomCategory.A -> searchA(query = it.query)
                CustomCategory.B -> searchB(query = it.query)
            }
        }
        .cachedIn(viewModelScope)

private fun searchA(query: String): Flow<PagingData<CustomItem>> {
    return repository.getA(query = query).map { pagingData ->
        pagingData.map { it.mapToDomainModel() }
    }
}

private fun searchB(query: String): Flow<PagingData<CustomItem>> {
    return repository.getB(query = query).map { pagingData ->
        pagingData.map { it.mapToDomainModel() }
    }
}