Getting an error message that i am not familiar with doing the dogglers app for the google developers unit 2 app - kotlin

Question

heres the link for the project . -> https://developer.android.com/codelabs/basic-android-kotlin-training-project-dogglers-app?continue=https%3A%2F%2Fdeveloper.android.com%2Fcourses%2Fpathways%2Fandroid-basics-kotlin-unit-2-pathway-3%23codelab-https%3A%2F%2Fdeveloper.android.com%2Fcodelabs%2Fbasic-android-kotlin-training-project-dogglers-app#2
package com.example.dogglers.adapter
import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.GridLayout
import android.widget.ImageView
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.example.dogglers.R
import com.example.dogglers.const.Layout
import com.example.dogglers.const.Layout.GRID
import com.example.dogglers.data.DataSource
import com.example.dogglers.data.DataSource.dogs
import com.example.dogglers.model.Dog
import kotlinx.coroutines.selects.select
/*** Adapter to inflate the appropriate list item layout and populate the view with information* from the appropriate data source*/
class DogCardAdapter(
private val context: Context?,
private val layout: Int
): RecyclerView.Adapter<DogCardAdapter.DogCardViewHolder>() {
val dogs = DataSource.dogs
// TODO: Initialize the data using the List found in data/DataSource
/*** Initialize view elements*/
class DogCardViewHolder(view: View?) : RecyclerView.ViewHolder(view!!) {
val dogImageView: ImageView? = view?.findViewById(R.id.pics_of_dogs)
val dogNameText:TextView? = view?.findViewById(R.id.dogs_name)
val dogAgeText:TextView? = view?.findViewById(R.id.dogs_age)
val dogHobbyText:TextView?=view?.findViewById(R.id.dogs_hobbies)
// TODO: Declare and initialize all of the list item UI components
fun onCreateViewHolder(parent: ViewGroup, viewType: Int): DogCardAdapter.DogCardViewHolder {
// TODO: Use a conditional to determine the layout type and set it accordingly.
// if the layout variable is Layout.GRID the grid list item should be used. Otherwise the
// the vertical/horizontal list item should be used.
val adapterLayout = when (viewType) {
Layout.GRID -> LayoutInflater.from(parent.context).inflate(R.layout.grid_list_item,parent,false)
else -> LayoutInflater.from(parent.context).inflate(R.layout.vertical_horizontal_list_item,parent,false)
}
return DogCardViewHolder(adapterLayout)
// TODO Inflate the layout
}
// TODO: Null should not be passed into the view holder. This should be updated to reflect
// the inflated layout.
}
override fun getItemCount(): Int {
return dogs.size
}
override fun onBindViewHolder(holder: DogCardAdapter.DogCardViewHolder, position: Int) {
// TODO: Get the data at the current position
// TODO: Set the image resource for the current dog
// TODO: Set the text for the current dog's name
// TODO: Set the text for the current dog's age
val dogData = dogs[position]
holder.dogImageView?.setImageResource(dogData.imageResourceId)
holder.dogNameText?.text= dogData.name
val resources = context?.resources
holder.dogAgeText?.text= resources?.getString(R.string.dog_age,dogData.age)
holder.dogHobbyText?.text = resources?.getString(R.string.dog_hobbies,dogData.hobbies)
// TODO: Set the text for the current dog's hobbies by passing the hobbies to the
// R.string.dog_hobbies string constant.
// Passing an argument to the string resource looks like:
// resources?.getString(R.string.dog_hobbies, dog.hobbies)
}
}
//fun onCreateViewHolder(parent: ViewGroup, viewType: Int): DogCardAdapter.DogCardViewHolder