Room bug集合

1. Not sure how to convert a Cursor to this method's return type

游标说我不知道你发的返回类型是啥

就是说getall的时候list必须用List而不可以是arrayList，如下全部的List不能写成Arraylist。不然运行就会报这个错误

@Dao
interface JournalOperateDao {
    @Query("Select * FROM `JournalOperateBean`")
    fun getAllJournalOperate():List<JournalOperateBean>
    @Query("SELECT * FROM `JournalOperateBean` WHERE userId=:id")
    fun getJournalOperate(id: String): List<JournalOperateBean>
    @Query("Select * FROM `JournalOperateBean` ORDER By id DESC LIMIT :start , :last")
    fun getLimitJournalOperate(start:Int,last:Int): List<JournalOperateBean>


    @Insert(onConflict = OnConflictStrategy.REPLACE)
    fun insertJournalOperate(JournalOperates: List<JournalOperateBean>)
    @Insert(onConflict = OnConflictStrategy.REPLACE)
    fun insertJournalOperate(JournalOperates: JournalOperateBean)

    @Update(onConflict = OnConflictStrategy.REPLACE)
    fun update(vararg JournalOperate: JournalOperateBean)
    @Delete
    fun delete(vararg JournalOperate: JournalOperateBean)
    @Query("DELETE FROM `JournalOperateBean`")
     fun deleteJournalOperateBeanAll()
}

2.room Entity class must be annotated with @Entity

@Database(
    entities = [
        这里应该写实体类而不是dao::class
    ], version = 1, exportSchema = false
)

就是写实体类的地方写成了dao或者是别的什么，然后不识别了。小问题大麻烦