Contact Adapter

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

import java.util.ArrayList;
import java.util.List;

public class ContactAdapter extends ArrayAdapter {

    List list = new ArrayList();
    public ContactAdapter(Context context, int resource) {
        super(context, resource);
    }

    @Override
    public void add(Object object)
    {
        super.add(object);
        list.add(object);
    }

    @Override
    public int getCount()
    {
        return list.size();
    }

    @Override
    public Object getItem(int position)
    {
        return list.get(position);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row;
        row = convertView;
        ContactsHolder contactsHolder;
        if (row == null)
        {
            LayoutInflater layoutInflater = (LayoutInflater)this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            row = layoutInflater.inflate(R.layout.list_item,parent,false);
            contactsHolder = new ContactsHolder();
            contactsHolder.tx_kode =(TextView) row.findViewById(R.id.tx_name);
            contactsHolder.tx_nama =(TextView) row.findViewById(R.id.tx_brg);
            contactsHolder.tx_harga =(TextView) row.findViewById(R.id.tx_harga);
            row.setTag(contactsHolder);

        }
        else
        {
            contactsHolder = (ContactsHolder)row.getTag();

        }
        Contacts contacts = (Contacts)this.getItem(position);
        contactsHolder.tx_kode.setText(contacts.getKode());
        contactsHolder.tx_nama.setText(contacts.getNama());
        contactsHolder.tx_harga.setText(contacts.getHarga());
        return row;
    }
    static class ContactsHolder
    {
        TextView tx_kode, tx_nama,tx_harga;
    }
}