尝试使用会议室库时出错。[SQLITE_ERROR]SQL错误或缺少数据库

Question

我正在尝试使用新房间的图书馆，但我遇到了这个错误

错误：查询有问题:[SQLITE_ERROR]SQL错误或缺少数据库（没有这样的表：Station）

错误：不确定如何将游标转换为此方法的返回类型

@Database(entities = TrolleyType::class), version = 2)
abstract class AppDatabase : RoomDatabase() {
    abstract fun stationDao(): StationDao
}

MyDao.kt

@Dao
interface MyDao {
    @get:Query("SELECT * FROM Station")
    val stations: List<Station>


    @get:Query("SELECT * FROM TrolleyType")
    val trolleyTypes: List<TrolleyType>
}

实体

@Entity
data class Station(
        @PrimaryKey @ColumnInfo(name = "_id") var id: Int = 0,
        @ColumnInfo(name = "StationName") var stationName: String? = "",
        @ColumnInfo(name = "StationArabic") var stationArabic: String? = ""
)

@Entity
data class TrolleyType(
        @PrimaryKey @ColumnInfo(name = "_id") var id: Int = 0,
        @ColumnInfo(name = "Type") var stationName: String? = "",
        @ColumnInfo(name = "TypeArabic") var stationArabic: String? = ""
)

Answer 1

结果我只是忘记了将Station实体添加到RoomDatabase中

添加后，每件事都能按预期工作

@Database(entities = TrolleyType::class, Station::class), version = 2)
abstract class AppDatabase : RoomDatabase() {
    abstract fun stationDao(): StationDao
}