Example of populating recycleview with adater data in kotlin

DailyAdapter.kt

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import com.app.base.R
import com.app.base.bean.DailyModel
import kotlinx.android.synthetic.main.item_daily.view.*

class DailyAdapter(private val dailyList: ArrayList<DailyModel>) : RecyclerView.Adapter<DailyAdapter.ViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val v = LayoutInflater.from(parent.context).inflate(R.layout.item_daily, parent, false)
        return ViewHolder(v)
    }

    override fun getItemCount(): Int {
        return dailyList.size
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.bindItem(dailyList[position])
    }


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

        fun bindItem(model: DailyModel) {
            itemView.tv_title.text = model.title
            itemView.tv_time.text = model.time
        }
    }
}

HomeFragment.kt

import android.annotation.SuppressLint
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.lifecycle.ViewModelProviders
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.app.base.R
import com.app.base.base_classes.BaseFragment
import com.app.base.bean.DailyModel
import com.app.base.ui.dashboard.home.adapter.DailyAdapter
import com.app.base.ui.dashboard.home.adapter.LeaderBoardAdapter
import kotlinx.android.synthetic.main.home_fragment.*

class HomeFragment : BaseFragment() {
    private lateinit var mDailyAdapter: DailyAdapter
    private val mDailyList: ArrayList<DailyModel>? = ArrayList()

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
                              savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.home_fragment, container, false)
    }

    @SuppressLint("WrongConstant")
    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        initAdapters()
        
        //adding data to list
        mDailyList!!.add(DailyModel("Todo 1", "10:30 PM"))
        mDailyList.add(DailyModel("Todo 2", "5:00 AM"))
        mDailyList.add(DailyModel("Todo 3", "6:00 AM"))
        mDailyList.add(DailyModel("Todo 4", "7:00 AM"))
        mDailyList.add(DailyModel("Todo 5", "2:00 AM"))
        mDailyList.add(DailyModel("Todo 6", "15:00 AM"))
        mDailyList.add(DailyModel("Todo 7", "1:00 AM"))

        //setting data to adapter
        mDailyAdapter = DailyAdapter(mDailyList)
        rv_daily_list.adapter = mDailyAdapter
    }

    private fun initAdapters() {
        rv_daily_list.layoutManager = LinearLayoutManager(activity)
        rv_daily_list.layoutManager = LinearLayoutManager(activity, RecyclerView.VERTICAL, false)
    }
}

item_daily.xml

<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.card.MaterialCardView xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    card_view:cardElevation="2dp"
    card_view:rippleColor="#cfd8dc"
    android:clickable="true"
    card_view:cardCornerRadius="5dp"
    card_view:cardUseCompatPadding="true"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <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="@dimen/_70sdp"
        android:background="#FAFAFA"
        android:orientation="vertical">

        <de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
            android:id="@+id/profile_image"
            android:layout_width="@dimen/_30sdp"
            android:layout_height="@dimen/_30sdp"
            android:background="@drawable/ic_account"
            app:civ_border_color="#FF000000"
            app:civ_border_width="2dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:text="Ross Taylor"
            android:textSize="@dimen/_16ssp"
            app:layout_constraintBottom_toBottomOf="@+id/profile_image"
            app:layout_constraintEnd_toStartOf="@+id/tv_time"
            app:layout_constraintHorizontal_bias="1.0"
            app:layout_constraintStart_toEndOf="@+id/profile_image"
            app:layout_constraintTop_toTopOf="@+id/profile_image"
            app:layout_constraintVertical_bias="0.35000002" />

        <TextView
            android:id="@+id/tv_time"
            android:layout_width="wrap_content"
            android:layout_height="20dp"
            android:text="10:30 PM"
            app:layout_constraintBottom_toBottomOf="@+id/tv_title"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toEndOf="@+id/tv_title"
            app:layout_constraintTop_toTopOf="@+id/tv_title"
            app:layout_constraintVertical_bias="0.0" />


    </androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.card.MaterialCardView>