单击列表视图中的复选框

Question

我尝试使用复选框创建一个listView，但是当我单击列表视图时，它还会检查其他复选框 如何使我的列表视图在单击时仅选中一个复选框？ 对不起noob问题，我是android编程的新手

这是我的代码：

package com.shop.browser;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.ListView;

import com.parse.Parse;
import com.parse.ParseQuery;

public class TechiesActivity extends Activity{

    ArrayList<String> itemList;
    ArrayAdapter<String> listAdapter;
    ListView listView;
    DataHandler handler;

    ArrayList<String> dataList;

    CheckBox cb;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.techies);
        Parse.initialize(this, "aHxmpsFcG6t9qHuV1nVSk5uwIDcuu3iZhcLGyRqf",
                "racObqmAEfJw1p6AwAiYvHJO0LqTrYHZsKfUISeY");        

        handler = new DataHandler();
        displayView();
    }
    public void displayView() {
        ParseQuery query = new ParseQuery("Techies");
        handler.setRetrieveData(this, query, "store", "Samsung");
        listAdapter = new ArrayAdapter<String>(this, R.layout.listview_format, 
                R.id.item_list,handler.getRetrieveData());
        listView = (ListView)findViewById(R.id.listView2);
        listView.setAdapter(listAdapter);

        listView.setOnItemClickListener( new OnItemClickListener() {
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
                int firstPosition = listView.getFirstVisiblePosition();

                for(int i = firstPosition; i < listView.getCount(); i++){
                    View v = listView.getChildAt(i);
                    if(v != null){
                        cb = (CheckBox)v.findViewById(R.id.cb);
                        cb.setChecked(true);

                        /**
                        if(cb.isChecked()){
                                                                        }
                        **/
                    }
                }
            }
        });
    }

}

我可以不扩展任何适配器类，我只想继续这类可能。