How to serialize with retrofit and kotlin - kotlin

Question

Iam trying to serialize a response into Session class with Retrofit and Kotlin but i have an error. I am using inheritance here and maybe that is the problem i don't know :
"java.lang.IllegalArgumentException: Unable to create call adapter for retrofit2.Response<com.mobile.myapplication.Session> "
open class BaseUser {
var id:Int=0
var correo:String=""
var nombre:String=""
var apellido:String=""
var direccion:String=""
var telefono:String=""
var imagen:String=""
}
class Permiso {
var id:Int=0
var aplicacionId:Int=0
var aplicacionName:String=""
var lectura:Boolean=false
var escritura:Boolean=false
}
class Session: BaseUser() {
var token:String=""
var permiso:List<Permiso> = emptyList()
}
class LocalViewModel(private val retro:Retro= Retro()):ViewModel(){
private val _result = MutableStateFlow("")
val result:StateFlow<String> = _result
init {
viewModelScope.launch {
val jsonObject= JSONObject()
jsonObject.put("correo", "xxxxxx.com")
jsonObject.put("password", "xxxxx")
Log.d("payload",jsonObject.toString())
retro.token(jsonObject.toString())
}
}
}
#Composable
fun main(vm: LocalViewModel= viewModel()){
Text(text = "Hello world")
}
interface APIService {
#POST("api/Auth/SignIn")
fun requestToken(#Body requestBody: RequestBody): Response<Session>
}
class Retro{
fun getinstance(): APIService? {
var service:APIService?=null
try {
// Create Retrofit
val retrofit = Retrofit.Builder()
.baseUrl("xxxxxxxxx")
.addConverterFactory(GsonConverterFactory.create())
.build()
// Create Service
service = retrofit.create(APIService::class.java)
}catch (err:Error){
Log.e("RETROFIT_ERROR", err.toString())
}
return service
}
fun token(payload:String){
val instance=getinstance()
val requestBody = payload.toRequestBody("application/json".toMediaTypeOrNull())
val response = instance?.requestToken(requestBody)
Log.d("response",response.toString())
}
}
API response is like this :
{
"token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJOb21icmUiOiJSaWNoYXJkIiwiQXBlbGxpZG8iOiJWw61xdWV6IiwiQ29ycmVvIjoiUnZpcXVlekBzb2Zub21pYy5jb20iLCJEaXJlY2Npb24iOiJIZXJlZGlhIiwiVGVsZWZvbm8iOiJQw6lyZXoiLCJuYmYiOjE2NTc3MjQzOTksImV4cCI6MTY1Nzc0OTU5OSwiaXNzIjoiaHR0cHM6Ly9zb2Zub21pY2FwaS5henVyZXdlYnNpdGVzLm5ldC8ifQ.HtBEe1XlqyU0YBVyGJ1fs-EUiJn8vbWKqvNci2tOboU",
"id": 26,
"correo": "xxxxx.com",
"nombre": "xx",
"apellido": "xx",
"direccion": "xxx",
"telefono": "xx",
"imagen": null,
"permiso": []
}
What is the problem ???

Answer 1

I don't know why but with Response does not work only with Call instead Response!:
interface APIService {
#POST("api/Auth/SignIn")
fun requestToken(#Body requestBody: RequestBody): Call<Session>
}
fun token(payload:String):Session?{
val instance=getinstance()
val requestBody = payload.toRequestBody("application/json".toMediaTypeOrNull())
var session: Session?=null
val response = instance?.requestToken(requestBody) ?: return null
response.enqueue(object : Callback<Session?> {
override fun onResponse(call: Call<Session?>?, response: Response<Session?>) {
val statusCode = response.code()
if (statusCode!=200){
return
}
session = response.body()
}
override fun onFailure(call: Call<Session?>?, t: Throwable?) {
return
}
})
return session
}