Kotlin recyclerview row item selection background color change

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Android

I am able to change the color of the text and background of row clicked of my recyclerview in my recyclerview.

But my problem is after clicking for example on the 2th item,the 10st item also gets selected.Likewise after clicking my 5th item the 3nd item is selected.

How do i solve this?
in fact my question is that how to change background color of recyclerview item that click on it in Kotlin?
I also followed the instructions in this link. But it did not worked correctly!!

AllChanelAdapter.kt

class AllChanelAdapter(private val datalist:MutableList<AllChanelModel>, var clickListener: OnItemClickListener):RecyclerView.Adapter<AllChanelHolder>() {
    private lateinit var context:Context
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AllChanelHolder {
        context = parent.context
        return AllChanelHolder(LayoutInflater.from(context).inflate(R.layout.allchanel_singleitem,parent,false))
    }
    override fun getItemCount(): Int = datalist.size

    override fun onBindViewHolder(holder: AllChanelHolder, position: Int) {
        val data = datalist[position]
        val txt_title = holder.itemView.txt_title
        val txt_body = holder.itemView.txt_body
        val img_chanel = holder.itemView.img_chanel

        txt_title.setText(data.title)
        txt_body.setText(data.body)

        Glide
            .with(context)
            .load("...")
            .centerCrop()
            .into(img_chanel);
    }
    holder.initialize(datalist.get(position),clickListener)
}
interface OnItemClickListener {
    fun onItemClick(item: AllChanelModel, position: Int, view: View)
}

AllChanelHolder.kt

class AllChanelHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

    fun initialize(item:AllChanelModel,action:OnItemClickListener){
        itemView.setOnClickListener {
            action.onItemClick(item,adapterPosition,itemView)
        }
    }
}

MainPageActivity.kt

class MainPageActivity : AppCompatActivity(),OnItemClickListener {

    private val datalist:MutableList<AllChanelModel> = mutableListOf()
    lateinit var allchaneladapter : AllChanelAdapter
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main_page)
        
        send_request()

        allchaneladapter = AllChanelAdapter(datalist,this)
        all_chanel_recycler.layoutManager = LinearLayoutManager(this)
        all_chanel_recycler.adapter = allchaneladapter
    }

    private fun send_request(){
        val url = "http://10.0.2.2:8000/getsamplejson" // localhost api
        val que = Volley.newRequestQueue(this@MainPageActivity)
        val req = JsonArrayRequest(Request.Method.GET,url,null,
            Response.Listener {
                response->
                for(i in 0..response.length()-1){
                    var chanel_obj = response.getJSONObject(i)
                    datalist.add(
                        AllChanelModel(
                            chanel_obj.getString("body"),
                            chanel_obj.getString("title"),
                            chanel_obj.getString("userId")
                        )
                    )
                }
                allchaneladapter.notifyDataSetChanged()
            }, Response.ErrorListener {
                error->
                   Log.e("",error.message)
            })

            que.add(req)
    }
    override fun onItemClick(item: AllChanelModel, position: Int, view: View) {
        view.setBackgroundColor(Color.YELLOW)
    }
}

AllChanelModel.kt

data class AllChanelModel(
    @SerializedName("body")
    val body: String,
    @SerializedName("title")
    val title: String,
    @SerializedName("userId")
    val userId: String
    )

activity_main_page.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainPageActivity">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/all_chanel_recycler"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

allchanel_singleitem.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <LinearLayout
        android:id="@+id/linear_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="3"
        android:orientation="vertical"
        android:padding="5dp">

        <TextView
            android:id="@+id/txt_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="right"
            android:text="TextView"
            android:textColor="#000000" />

        <TextView
            android:id="@+id/txt_body"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center|right"
            android:text="TextView"
            android:textColor="#000000" />

    </LinearLayout>

    <ImageView
        android:id="@+id/img_chanel"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_weight="1"
        app:srcCompat="@mipmap/ic_launcher" />

</LinearLayout>

please help me
thank you

What I have tried:

I have explained in the problem section