java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 45 path $.USD (Kotlin)

I have Problem “java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 45 path $.USD” I did some research on this issue, but there was no result.

My Code Build

Interface

 interface ApiService {
    @Headers("Content-Type: application/json")
     @GET("today.json")
   fun getData() : Call<Data>
 }

Data Class

data class Data(
 @SerializedName("Update_Date")
 val Update_Date : String,
 @SerializedName("USD")
 var USD: List<USDList>,
)

List<USDList>

data class USDList ( 
    @SerializedName("Buying")
    @Expose
    var buying: String? = null,

    @SerializedName("Selling")
    @Expose
    var selling: String? = null,

     @SerializedName("Type")
     @Expose
      var type: String? = null,

      @SerializedName("Name")
      @Expose
       var name: String? = null)

MainActivity

val retrofit = Retrofit.Builder()
           .addConverterFactory(GsonConverterFactory.create())
           .baseUrl("https://finans.truncgil.com/v2/")
           .build()

        val retrofitCreate = retrofit.create(ApiService::class.java)
        retrofitCreate.getData().enqueue(object : Callback<Data>{
            override fun onResponse(call: Call<Data>, response: Response<Data>) {
                println("Datas : ${response.body().toString()}")
                showData(response.body())
            }

            private fun showData(body: Data?) {
                recylerViewDöviz.apply {
                    adapter = body.let { DövizRecylerView(it!! , this@DovizActivity) }
                    layoutManager = LinearLayoutManager(this@DovizActivity)
                }
            }

            override fun onFailure(call: Call<Data>, t: Throwable) {
                Log.e(TAG , t.localizedMessage.toString())
            }

        })

How to fix problem? I don’t know if it is forbidden to share links https://finans.truncgil.com/v2/today.json I get the json data from here

[Marcono1234]

As described by the exception message your data class makes Gson expect a JSON array (because you are using List<...>), but the actual JSON data is using a JSON object:

"USD":{"Buying":"7,0253","Selling":"7,0380","Type":"Exchange","Name":"ABD DOLARI"}

You will have to fix your data class to correctly repesent the JSON structure.

[mattwelke]

Am facing the same exception

This sounds like a problem with using the library rather than with the library itself, and Stack Overflow would be a better venue.

We’ve already established that it isn’t an issue with the library causing the issue. That means it’s an issue with how you’re using the library. Stack Overflow is good for this. They’ll expect a minimal reproduction of the issue, so be sure to include some code showing how to cause that exception.