我试图在array中解析Json，但是它没有工作。 消息来源是这样的

    @POST("/storyGet")
fun getStory() : Call<ArrayList<StoryData>>

这是api.kt的和

Client.retrofitService.getStory().enqueue(object :
        retrofit2.Callback<ArrayList<StoryData>> {
        override fun onResponse(call: Call<ArrayList<StoryData>>?, response: Response<ArrayList<StoryData>>?) {
            val repo = response!!.body()
            when (response.code()) {
                200 -> {
                    repo!!.indices.forEach {
                        items += StoryDataSubListItem(
                                repo[it][it][it].alreadyWatch,
                                repo[it][it][it].createdAt,
                                repo[it][it][it].imgUrl,
                                repo[it][it][it].storyUUID,
                                repo[it][it][it].userName,
                                repo[it][it][it].userName,
                                repo[it][it][it].userUUID
                            )
                        recyclerView!!.adapter?.notifyDataSetChanged()
                    }
                }
            }
        }

        override fun onFailure(call: Call<ArrayList<StoryData>>?, t: Throwable?) {
        }
    })

这是我的改装数据

class StoryData : ArrayList<StoryDataSubList>()

这是第一个数组和

class StoryDataSubList : ArrayList<StoryDataSubListItem>()

这是我的第二个数组

data class StoryDataSubListItem(
val alreadyWatch: List<Any>,
val createdAt: String,
val imgUrl: String,
val storyUUID: String,
val userName: String,
val userProfileImgUrl: String,
val userUUID: String)

这是dataclass，array中的json，array的格式是

[
[
    {
        "alreadyWatch": [],
        "createdAt": "test",
        "_id": "_id",
        "userUUID": "userUUID2",
        "userName": "userName2",
        "userProfileImgUrl": "false",
        "imgUrl": "imageUrl",
        "storyUUID": "StoryUUID",
        "__v": 0
    }
],
[
    {
        "alreadyWatch": [],
        "createdAt": "test",
        "_id": "_id",
        "userUUID": "userUUID",
        "userName": "TEST NAME",
        "userProfileImgUrl": "false",
        "imgUrl": "imageURL",
        "storyUUID": "StoryUUID",
        "__v": 0
    }
]]

当我看到logcat的时候，服务器是正常运行的，当这样的时候我应该如何修复它？ 请帮忙，提前谢谢。