小编Ami*_*avi的帖子

我正在尝试将Room集成到我的kotlin项目中，该项目也使用了数据绑定。我已经实现了所有必需的类（我认为是这样！），但是当我尝试构建项目时，我收到了以下错误消息，并且无法找出导致问题的原因这个错误或我想念的是什么

这是构建日志

e: [PATH_TO_PROJECT]\dataaccess\local\AppDatabase.java:7: error: android.arch.persistence.room.RoomProcessor was unable to process this class because not all of its dependencies could be resolved. Check for compilation errors or a circular dependency with generated code.
public abstract class AppDatabase extends android.arch.persistence.room.RoomDatabase {
                ^
e: [PATH_TO_PROJECT]\dataaccess\local\BusinessLocalDataSource.java:7: error: android.arch.persistence.room.RoomProcessor was unable to process this class because not all of its dependencies could be resolved. Check for compilation errors or a circular dependency with generated code.
public abstract class BusinessLocalDataSource implements [PACKAGE].dataaccess.local.BaseDao<[PACKAGE].dataaccess.local.model.Business>, [PACKAGE].dataaccess.BusinessDataSource {
                ^
e: …

我在我的项目中使用了 Jetpack 的Paging 3库来处理数据分页。我有一个用例，当用户更改搜索请求中的某些内容（例如添加/删除一些过滤器）时，我必须调用 API 并根据新的搜索请求使用新数据重新填充我的列表。但是当我创建新Pager实例并将其传递给我的PagingDataAdapter适配器时，它会抛出：

java.lang.IllegalStateException: Collecting from multiple PagingData concurrently is an illegal operation.

我的实现是这样的：

存储库

class Repository {
    fun getDataStream(request: Request): Flow<PagingData<Response>> {
        return Pager(
            config = PagingConfig(
                pageSize = 10,
                initialLoadSize = 10,
                prefetchDistance = 3
            ),
            initialKey = 1,
            pagingSourceFactory = {
                DataPagingSource(
                    request = request,
                    repository = this
                )
            }
        ).flow
    }

    fun getData(page: Int, request: Request): Result<Response> {
        return remoteDataSource.getData(page, request)
    }
}

数据分页源

class DataPagingSource(
    private …