pub_sub_message_adapter.java

package com.test.groupchatapp;

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

/**
 * @author Frank Ibem.
 */
public class MessageAdapter extends ArrayAdapter<Message> {
    private LayoutInflater inflater;

    public MessageAdapter(Context context) {
        super(context, -1);
        inflater = LayoutInflater.from(context);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        TextView userName, message;

        // If first time, inflate view and set holder
        if (view == null) {
            view = inflater.inflate(R.layout.message_item, parent, false);
            userName = (TextView) view.findViewById(R.id.text_username);
            message = (TextView) view.findViewById(R.id.text_message);
            MessageViewHolder holder = new MessageViewHolder();
            holder.userName = userName;
            holder.message = message;
            view.setTag(holder);
        }
        // Get TextViews from holder
        else {
            MessageViewHolder holder = (MessageViewHolder) view.getTag();
            userName = holder.userName;
            message = holder.message;
        }

        // Set username and message
        Message mes = getItem(position);
        userName.setText(mes.getUserName());
        message.setText(mes.getMessage());

        return view;
    }

    class MessageViewHolder {
        public TextView userName;
        public TextView message;
    }
}