ListAdapter.java

package com.example.codelist;

import android.content.Context;
import android.database.Cursor;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

public class ListAdapter extends RecyclerView.Adapter<ListAdapter.ViewHolder> {
    private Context mContext;
    private Cursor mCursor;

    public ListAdapter (Context context, Cursor cursor) {
        mContext = context;
        mCursor = cursor;
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        TextView mtextView;
        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            mtextView = itemView.findViewById(R.id.textView);
        }
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(mContext);
        View view = inflater.inflate(R.layout.single_item_layout, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        if (!mCursor.moveToPosition(position)) {
            return;
        }
        Long id = mCursor.getLong(mCursor.getColumnIndex(IdentifiersClass.Collection._ID));

        String name = mCursor.getString(mCursor.getColumnIndex(IdentifiersClass.Collection.COLUMN_NAME));
        holder.mtextView.setText(name);
        holder.itemView.setTag(id);
    }

    @Override
    public int getItemCount() {
        return mCursor.getCount();
    }

    public void swapCursor (Cursor newCursor) {
        if (mCursor != null) {
            mCursor.close();
        }
        mCursor = newCursor;

        if (newCursor != null) {
            notifyDataSetChanged();
        }
    }

}