Good old ListView with reusable elements

MainActivity.kt

package com.example.mytestapplication

import android.app.ListActivity
import android.content.Context
import android.os.Bundle
import android.view.View
import android.view.ViewGroup
import android.widget.BaseAdapter
import android.widget.LinearLayout
import android.widget.TextView

class MainActivity : ListActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        listAdapter = TestAdapter(listOf(
            Profile("John", 25),
            Profile("Jane", 22),
            Profile("Jack", 30)
        ))
    }

    class Profile(val name: String, val age: Int)

    class TestAdapter(val profiles: List<Profile>): BaseAdapter() {
        override fun getCount(): Int {
            return profiles.size
        }

        override fun getItem(position: Int): Any {
            return profiles[position]
        }

        override fun getItemId(position: Int): Long {
            return position.toLong()
        }

        override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
            var view = convertView
            if (view == null) {
                view = ProfileView(parent!!.context)
            }
            (view as ProfileView).bind(profiles[position])
            return view
        }
    }

    class ProfileView(context: Context): LinearLayout(context) {
        val tvName: TextView
        val tvAge: TextView
        init {
            tvName = TextView(context)
            tvAge = TextView(context)
            addView(tvName)
            addView(tvAge)
        }

        fun bind(profile: Profile) {
            tvName.text = profile.name
            tvAge.text = profile.age.toString()
        }
    }
}