How can i get item position of item selected with checkBox in RecyclerView ? here you can see how it looks like

TaskRecyclerAdapter.kt

 class TaskRecycleAdapter: RecyclerView.Adapter<TaskRecycleAdapter.MyViewHolder>() {

    private var list = emptyList<Data>()

    private lateinit var mListener : OnItemClickListener


     class MyViewHolder(binding: TaskHolderBinding, listener: OnItemClickListener): RecyclerView.ViewHolder(binding.root) {

        init {

            itemView.setOnClickListener {

                listener.onItemClick(adapterPosition)

            }

        }
    }

    interface OnItemClickListener {

        fun onItemClick(position: Int)

    }

    fun setOnItemClickListener(listener: OnItemClickListener) {

        mListener = listener

    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
        return MyViewHolder(TaskHolderBinding.inflate(LayoutInflater.from(parent.context), parent, false), mListener)
    }

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {

        val item = list[position]

        holder.itemView.findViewById<TextView>(R.id.task).text = item.task
        holder.itemView.findViewById<TextView>(R.id.taskDescription).text = item.task_Details
    }

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

    fun setData(newList: List<Data>) {
        val diffUtil = DiffUtil(list, newList )
        val diffResults = calculateDiff(diffUtil)
        list = newList
        diffResults.dispatchUpdatesTo(this)
    }
    fun getTaskAt(position: Int): Data {
        return list[position]
    }
}

task_holder.xml

    <?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@ id/taskHolder"
    app:cardCornerRadius="15dp"
    android:backgroundTint="@color/card"
    app:cardElevation="3dp"
    app:contentPadding="3dp"
    android:layout_marginTop="7dp"
    android:layout_marginBottom="7dp"
    android:layout_marginEnd="3dp"
    android:layout_marginStart="3dp" >

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="88dp">

        <ImageView
            android:id="@ id/imageView"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:contentDescription="@string/task_icon"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@ id/task"
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="98dp"
            android:layout_marginTop="4dp"
            android:contentDescription="@string/task"
            android:textAlignment="center"
            android:textSize="30sp"
            android:textStyle="bold|italic"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="@ id/imageView"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@ id/taskDescription"
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:layout_marginEnd="100dp"
            android:layout_marginBottom="4dp"
            android:contentDescription="@string/task"
            android:textAlignment="center"
            android:textSize="20sp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toEndOf="@ id/imageView"
            app:layout_constraintTop_toBottomOf="@ id/task"
            app:layout_constraintVertical_bias="1.0" />

        <CheckBox
            android:id="@ id/checkBox"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.924"
            app:layout_constraintStart_toEndOf="@ id/task"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.1" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.cardview.widget.CardView>

CodePudding user response：

I'm Java Developer so I cannot code with Kotlin but I'll show you how to get any view's position in RecyclerView

holder.itemView.setOnClickListener(view -> {
            Toast.makeText(context, "This is position of your Every ItemViews", Toast.LENGTH_SHORT).show();
        });

In your onBindViewHolder use this code holder.itemView.setOnClickListener and create new click listener. Here you can get the position of your items by coding and you can check by adding Toast. your code lookalike below:-

override fun onBindViewHolder(holder: MyViewHolder, position: Int) {

        val item = list[position]

        holder.itemView.findViewById<TextView>(R.id.task).text = item.task
        holder.itemView.findViewById<TextView>(R.id.taskDescription).text = item.task_Details
holder.itemView.setOnClickListener(view -> {
            Toast.makeText(context, "This is position of your Every ItemViews", Toast.LENGTH_SHORT).show();
        });
    }

Make sure to change JAVA to Kotlin of my code. If you any problem is causing, Let me know