UsersAdapter.java

package xyz.lahal.abla;

import android.content.Context;
import android.content.Intent;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.squareup.picasso.Picasso;

import java.util.List;

public class UsersAdapter extends RecyclerView.Adapter<UsersAdapter.UsersViewHolder> {

    Context mCtx;
    List<Users> usersList;

    public UsersAdapter(Context mCtx, List<Users> usersList) {
        this.mCtx = mCtx;
        this.usersList = usersList;
    }

    @Override
    public UsersViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(mCtx).inflate(R.layout.users_single_layout, parent, false);
        UsersViewHolder usersViewHolder = new UsersViewHolder(view);
        return usersViewHolder;
    }

    //Picasso tutorial for image retrieval
    //https://www.youtube.com/watch?v=0B471wsJ_RY
    @Override
    public void onBindViewHolder(UsersViewHolder holder, final int position) {
        final Users users = usersList.get(position);

        holder.nameTextView.setText(users.getName());
        holder.statusTextView.setText(users.getStatus());
        Picasso.get()
                .load(users.getThumb_image())
                .placeholder(R.drawable.default_avatar)
                .error(R.drawable.default_avatar)
                .into(holder.imageView);

        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                //Toast.makeText(view.getContext(), "user_id " + position, Toast.LENGTH_SHORT).show();

                Intent profileIntent = new Intent(view.getContext(), ProfileActivity.class);
                profileIntent.putExtra("user_id", user_id);
                view.getContext().startActivity(profileIntent);

            }
        });
        }

    @Override
    public int getItemCount() {
        return usersList.size();
    }

    public class UsersViewHolder extends RecyclerView.ViewHolder {

        private ImageView imageView;
        private TextView nameTextView;
        private TextView statusTextView;

        public UsersViewHolder(View itemView) {
            super(itemView);

            imageView = itemView.findViewById(R.id.user_single_image);
            nameTextView = itemView.findViewById(R.id.user_single_name);
            statusTextView = itemView.findViewById(R.id.user_single_status);
            }
    }
}