Custom Retrofit CallBack Class to handle Custom Responses.

RetrofitCallback.kt

import android.app.Dialog
import android.content.Context
import android.util.Log
import android.view.View

import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response

open class RetrofitCallback(private val mContext: Context) : Callback<GeneralResponse> {
    private lateinit var progressDialog: Dialog

    init {
            progressDialog = Util.ProgressDialog(mContext)
            progressDialog.show()
        
    }


   override fun onResponse(call: Call<GeneralResponse>, response: Response<GeneralResponse>) {
       if (response.body() == null) {
          //response is null 
        } else {
            if (response.body()!!.code=="3333") {
              //session timed out }
            else if (response.body()!!.code=="1111") {
              //failed }
              }
      }

    override fun onFailure(call: Call<GeneralResponse>, t: Throwable) {
        hideProgress()
        if (t.message != null) {
            Log.e(TAG, t.message)
            }
    }


    private fun hideProgress() {
        progressDialog.dismiss()
    }

}