Pfthb

i would like to retrieve data of manchester city team from :

API Link using OKHttp. I would like to display information such as club name, info logo etc. i tried to display it badge first.

here is my "Testgambar.kt" file

package com.eldarcreative.portalbola



import android.support.v7.app.AppCompatActivity

import android.os.Bundle
import android.support.v7.widget.LinearLayoutManager
import com.google.gson.GsonBuilder
import kotlinx.android.synthetic.main.activity_tes_gambar.*
import okhttp3.*
import java.io.IOException

class TesGambar : AppCompatActivity() 

 override fun onCreate(savedInstanceState: Bundle?) 
 super.onCreate(savedInstanceState)
 setContentView(R.layout.activity_tes_gambar)

 detailrv.layoutManager= LinearLayoutManager(this)


 fetchJSONHome()


 

 fun fetchJSONHome()
 val urlhome = "https://www.thesportsdb.com/api/v1/json/1/lookupteam.php?id=133613"

 val request = Request.Builder().url(urlhome).build()

 val client = OkHttpClient()

 client.newCall(request).enqueue(object: Callback 
 override fun onResponse(call: Call, response: Response) 
 val body = response?.body()?.string()
 val gson = GsonBuilder().create()

 val DataTeam= gson.fromJson(body, Datatim::class.java)

 runOnUiThread 
 detailrv.adapter = TeamAdapterZ(DataTeam)
 
 

 override fun onFailure(call: Call, e: IOException) 

 

 )
 

 

 class Datatim(val loglog : List<DetailTim>)

Datatim.kt

data class DetailTim (
val idTeam:String?,
val strTeamLogo:String?,
val strTeamBadge:String?

)

TeamAdapterZ.kt

import android.support.v7.widget.RecyclerView
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import com.squareup.picasso.Picasso
import kotlinx.android.synthetic.main.activity_detail.view.*

public var logologo:String? = null

class TeamAdapterZ (val datatim :Datatim) : RecyclerView.Adapter<TeamAdapterZ.TeamViewHolder>()
 override fun onBindViewHolder(holder:TeamViewHolder, position: Int) 
 val timdata=datatim.loglog.get(position)
 holder.view.cadangantandang.text=timdata.idTeam

 

 override fun getItemCount(): Int 

 return datatim.loglog.count() ;

 

 override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TeamAdapterZ.TeamViewHolder 
 val layoutInflater = LayoutInflater.from(parent.context)
 val cellforrow = layoutInflater.inflate(R.layout.activity_detail, parent, false)
 return TeamAdapterZ.TeamViewHolder(cellforrow)
 

 class TeamViewHolder (val view: View):RecyclerView.ViewHolder(view)

 
 

my first test is to find out whether the data is retrieve or not, but it's return null value on logcat

java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.Collection.size()' on a null object reference
at com.eldarcreative.portalbola.TeamAdapterZ.getItemCount(TeamAdapterZ.kt:25)

anyone knew how to fix it?.