listview实现多选 全选 反选

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >
    
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_marginTop="10dp"
        android:text="已选中n项" />
     <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="26dp"
        android:layout_marginTop="10dp"
        android:text="全选" />
    <ListView 
        android:id="@+id/lv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/button1"
        ></ListView>

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/lv"
        android:layout_centerHorizontal="true"
        android:text="反选" />

    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/button2"
        android:layout_alignBottom="@+id/button2"
        android:layout_alignParentRight="true"
        android:text="全不选" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout   xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <TextView  
        android:id="@+id/tv"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_weight="1"
        android:textSize="20sp"
        android:text="data" />  
  
    <CheckBox  
        android:id="@+id/check"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"
        android:clickable="false"
        android:focusable="false"  
        android:focusableInTouchMode="false"  
        android:gravity="center_vertical" /> 

</LinearLayout>

package com.bwie.test;

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

import com.bwie.adapter.MyAdapter;
import com.bwie.adapter.MyAdapter.ViewHolder;
import com.bwievo.Goods;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

    private Button bt_all;
    private Button bt_cancel;
    private ListView listView;
    private TextView textView;
    private List<Goods> list;
    private Button bt_cancelall;
    private MyAdapter adapter;
    private int num;//选中的项数
    private int sum;//选中项数的总和

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // 找控件
        bt_all = (Button) findViewById(R.id.button1);
        bt_cancel = (Button) findViewById(R.id.button2);
        listView = (ListView) findViewById(R.id.lv);
        textView = (TextView) findViewById(R.id.textView1);
        bt_cancelall = (Button) findViewById(R.id.button3);
        // 创建集合存放数据
        list = new ArrayList<Goods>();
        // 设置数据
        initData();
        // 创建适配器
        adapter = new MyAdapter(MainActivity.this, list);
        // 设置适配器
        listView.setAdapter(adapter);
        // 对全选按钮进行监听
        bt_all.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                for (int i = 0; i < list.size(); i++) {
                    list.get(i).setBo(true);
                    // 刷新适配器并改变textview的值
                    notifyData();
                }
            }

        });
        // 对反选按钮进行监听
        bt_cancel.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                for (int i = 0; i < list.size(); i++) {
                    if (list.get(i).getBo()) {
                        list.get(i).setBo(false);
                    } else {
                        list.get(i).setBo(true);
                    }
                    // 刷新适配器并改变textview的值
                    notifyData();
                }
            }
        });
        // 对全不选按钮进行监听
        bt_cancelall.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                for (int i = 0; i < list.size(); i++) {
                    list.get(i).setBo(false);
                    // 刷新适配器并改变textview的值
                    notifyData();
                }
            }
        });
        // 绑定listview的监听器
        listView.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // TODO Auto-generated method stub
                // 取得ViewHolder对象，这样就省去了通过层层的findViewById去实例化我们需要的cb实例
                ViewHolder holder = (ViewHolder) view.getTag();
                // 改变CheckBox的状态
                holder.box.toggle();
                // 将CheckBox的选中状况记录下来
                list.get(position).setBo(holder.box.isChecked());
                // 调整选定条目
                if (holder.box.isChecked() == true) {
                    num++;
                    sum += Integer.parseInt(list.get(position).getName());
                } else {
                    num--;
                    sum -= Integer.parseInt(list.get(position).getName());
                }
                // 用TextView显示
                textView.setText("当前已选中" + num + "项,价格是" + sum + "元");
            }
        });

    }

    private void initData() {
        // TODO Auto-generated method stub
        for (int i = 0; i < 30; i++) {
            list.add(new Goods(i + "", false));
        }
    }

    private void notifyData() {
        num = 0;
        sum = 0;
        adapter.notifyDataSetChanged();
        for (int i = 0; i < list.size(); i++) {
            if (list.get(i).getBo()) {
                num++;
                sum += Integer.parseInt(list.get(i).getName());
            }
        }
        textView.setText("当前已选中" + num + "项,总价为" + sum);

    }

}

package com.bwievo;

public class Goods {
    private String name;
    private boolean bo;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public boolean getBo() {
        return bo;
    }
    public void setBo(boolean bo) {
        this.bo = bo;
    }
    
    public Goods(String name, boolean bo) {
        super();
        this.name = name;
        this.bo = bo;
    }
    @Override
    public String toString() {
        return "Goods [name=" + name + ", bo=" + bo + "]";
    }
    

}