Kotlin Fragment RecyclerView Adapter ...trying to make ItemClickOnListener to work - android-fragments

Question

This is making me go bananas !! Swear i will never eat bananas again !!
I am trying work on a Kotlin/Fragment/RecyclerViewAdapter/OnItemClickListener but it is not working
I am trying to make the ItemOnClickListener to work between the RecyclerView Adapter and the Fragment. I have indicated in the code where the problems are.
FRAGMENT
class VCTask : Fragment() {
private val TAG = "VCTask"
private lateinit var mContext: Context
private var _binding: FTaskBinding? = null
private val binding get() = _binding!!
private val exampleList = generateDummyList(500)
***private val adapter = ExampleAdapter(exampleList,this) <-----ERROR "this" in Fragment is rejected obviously
it refers to Activity..tried to use context etc but it is expecting ContentListener
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
_binding = FTaskBinding.inflate(inflater, container, false)
val view = binding.root
return view
}
private fun fragbind(view:View) {
mContext = this.requireContext()
binding.recyclerView.adapter = adapter
binding.recyclerView.layoutManager = LinearLayoutManager(mContext)
binding.recyclerView.setHasFixedSize(true)
}
fun onItemClicked(position: Int) { <------------------------ERROR: I want this to work
mContext = this.requireContext()
Toast.makeText(mContext, "Item $position clicked", Toast.LENGTH_SHORT).show()
val clickedItem = exampleList[position]
clickedItem.text1 = "Clicked"
adapter.notifyItemChanged(position)
}
}
RECYCLER ADAPTER
class ExampleAdapter(private val exampleList: List<ExampleItem>,listener: ContentListener) : <---LISTENER
ADDED AS VARIABLE..WHAT TO SHOW IN FRAGMENT ??
RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ExampleViewHolder {
val itemView = ExampleItemBinding.inflate(LayoutInflater.from(parent.context), parent, false)
return ExampleViewHolder(itemView)
}
override fun onBindViewHolder(holder: ExampleViewHolder, position: Int) {
val currentItem = exampleList.get(position)
holder.binding.imageView.setImageResource(currentItem.imageResource)
holder.binding.textView1.text = currentItem.text1
holder.binding.textView2.text = currentItem.text2
}
override fun getItemCount(): Int = exampleList.size
inner class ExampleViewHolder(val binding: ExampleItemBinding) : RecyclerView.ViewHolder(binding.root) {
val imageView: ImageView = binding.imageView
val textView1: TextView = binding.textView1
val textView2: TextView = binding.textView2
fun bind(listOfData:
ArrayList<ExampleItem>, listener: ContentListener) { <-----------IS THIS CORRECT ??
Because adapterPosition is deprecated
val item = listOfData[adapterPosition]
itemView.setOnClickListener {
listener.onItemClicked(listOfData.get(adapterPosition))
}
}
}
public interface ContentListener {
fun onItemClicked(item: ExampleItem)
}
}
Appreciate your input...i have spent too much time on this...

Answer 1

You need to declare and implement your interface in your fragment, like this:
binding.recyclerView.adapter.setOnclickListiner(mOnAdapterClickListener)
and then define and implement like this..
private val mOnAdapterClickListener = object : ContentListener {
override fun onItemClicked(item: ExampleItem) {
//do your stuff
}