我正在从firebase组成一个懒惰的项目行。我想有一个按钮的地方类型过滤行（eidogg.，商店，餐馆等）工作正常。由于它们都是完全相同的屏幕，我只是用所选的类别为它调用可组合的，然后，我希望能够选择一个新按钮来进一步过滤，但由于某种原因，组合工具陷入了循环。

fun LocationScreen(
    modifier: Modifier = Modifier,
    viewModel: HomeViewModel = hiltViewModel(),
    useCategoryTag: CategoryTags? = null,
    onLocationClick: (String) -> Unit,
    onBackClick: () -> Unit = {}
) {
        val locations = viewModel.getCategoryLocations(useCategoryTag).value.collectAsStateWithLifecycle(emptyList())
        ...

在我的视图模型中

var locations: MutableState<Flow<List<Location>>> =
        mutableStateOf(emptyFlow())

...
...
...

fun getCategoryLocations(tag: CategoryTags?): MutableState<Flow<List<Location>>> {
        if (tag == null) {
            Log.i("getCategoryLocations","null")
            locations.value = firestoreRepository.locations
        } else {
            Log.i("getCategoryLocations","not null")
            locations.value = firestoreRepository.getLocationCategory(tag, locationTags.toList())
        }
        return locations
    }

我的数据访问（过滤只是一个测试值ATM）

override fun getLocationCategory(
        tag: CategoryTags,
        filters: List<LocationTags>
    ): Flow<List<Location>> {
        return firestore.collection(LOCATIONS_COLLECTION)
            .whereEqualTo("category", tag.toString())
            .snapshots()
            .map { snapshot ->
                snapshot.toObjects<Location>()
                    .filter { location -> location.top_tags[0] == "Few People" }
            }
    }

当一个按钮被点击的时候，点击触发就像这样，if null检查看起来工作得很好（它只是导航）

onClick = {
    if (useCategoryTag == null) {
        viewModel.onCategoryClick(item as CategoryTags, onLocationClick)
    } else {
       viewModel.getCategoryLocations(useCategoryTag)
    }
}

Log就是这样做的：

2023-03-21 20:47:24.876 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:24.893 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:24.917 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:24.948 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:24.978 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:24.997 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:25.028 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:25.044 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null
2023-03-21 20:47:25.060 13143-13143 getCategoryLocations    com.app.senseaid                     I  not null

已尝试使用if语句检查是否应重新组合，但没有任何进展
编辑：现在也在循环初始构图