如何解析指定JSON对象在UI上展示F1车手的名与姓？

先理清API响应的结构 #

这个API的JSON层级是嵌套的，车手姓名藏在以下路径里：

• 最外层 MRData → StandingsTable → StandingsLists 数组（当前赛季仅1个元素）→ DriverStandings 数组（每个元素对应一位车手）→ Driver 对象 → givenName（名）和 familyName（姓）

关键结构示例：

{
  "MRData": {
    "StandingsTable": {
      "StandingsLists": [
        {
          "DriverStandings": [
            {
              "Driver": {
                "givenName": "Max",
                "familyName": "Verstappen"
              }
            }
          ]
        }
      ]
    }
  }
}

解析数据（以Retrofit+Gson为例） #

先定义对应的数据类，匹配JSON结构：

data class DriverStandingsResponse(
    val MRData: MRData
)

data class MRData(
    val StandingsTable: StandingsTable
)

data class StandingsTable(
    val StandingsLists: List<StandingsList>
)

data class StandingsList(
    val DriverStandings: List<DriverStanding>
)

data class DriverStanding(
    val Driver: Driver
)

data class Driver(
    val givenName: String,
    val familyName: String
)

然后通过Retrofit请求并提取车手姓名：

// 定义API接口
interface ErgastApi {
    @GET("current/driverStandings.json")
    suspend fun getCurrentDriverStandings(): Response<DriverStandingsResponse>
}

// 请求并处理数据
val api = Retrofit.Builder()
    .baseUrl("http://ergast.com/api/f1/")
    .addConverterFactory(GsonConverterFactory.create())
    .build()
    .create(ErgastApi::class.java)

// 协程中执行请求
lifecycleScope.launch {
    val response = api.getCurrentDriverStandings()
    if (response.isSuccessful) {
        // 提取拼接后的车手姓名列表
        val driverNames = response.body()?.MRData?.StandingsTable?.StandingsLists?.firstOrNull()
            ?.DriverStandings?.map {
                "${it.Driver.givenName} ${it.Driver.familyName}"
            } ?: emptyList()
        
        // 传给RecyclerView适配器
        recyclerView.adapter = DriverAdapter(driverNames)
    }
}

RecyclerView适配器实现 #

class DriverAdapter(private val driverNames: List<String>) : RecyclerView.Adapter<DriverAdapter.ViewHolder>() {

    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        val driverNameTv: TextView = itemView.findViewById(R.id.tv_driver_name)
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val view = LayoutInflater.from(parent.context)
            .inflate(R.layout.item_driver, parent, false)
        return ViewHolder(view)
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.driverNameTv.text = driverNames[position]
    }

    override fun getItemCount() = driverNames.size
}

最后给RecyclerView设置布局管理器：

recyclerView.layoutManager = LinearLayoutManager(this)

内容的提问来源于stack exchange，提问作者collapseCorpse