ListView+CheckBox实现全选 单击效果

在网上也找了一些案例,但都是用Map来实现的.我的是把对象绑定到当前控件上.代码稍微简洁.

main布局文件:main.xml

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

    <TextView
        android:id="@+id/tv"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical" />

    <LinearLayout
        android:id="@+id/line"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:layout_below="@+id/tv"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/bt_selectall"
            android:layout_width="80dp"
            android:layout_height="fill_parent"
            android:text="全选" />

        <Button
            android:id="@+id/bt_deselectall"
            android:layout_width="80dp"
            android:layout_height="fill_parent"
            android:text="取消选择" />
    LinearLayout>

    <ListView
        android:id="@+id/lv"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@+id/line" />

RelativeLayout>

ListItem布局文件:listviewitem.xml

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

    <TextView
        android:id="@+id/item_tv"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_weight="1" />

    <CheckBox
        android:id="@+id/item_cb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:focusable="false"
        android:focusableInTouchMode="false"
        android:gravity="center_vertical" />

LinearLayout>

实体类:Person.java

package com.example.listview_checkbox;

public class Person {
    private int id;
    private String name;
    private boolean selected;

    public Person(int id, String name, boolean selected) {
        super();
        this.id = id;
        this.name = name;
        this.selected = selected;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public boolean isSelected() {
        return selected;
    }

    public void setSelected(boolean selected) {
        this.selected = selected;
    }

}

MainActivity.java

package com.example.listview_checkbox;

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


import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity{
    private List listPerson;
    private List selectPerson=new ArrayList();
    private MyAdapter mAdapter;
    private TextView tv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ListView listView=(ListView) findViewById(R.id.lv);
        listPerson = new ArrayList();
        initDate();
        listView.setAdapter(mAdapter=new MyAdapter());

        Button btSelectall=(Button) findViewById(R.id.bt_selectall);
        btSelectall.setOnClickListener(clickListener);
        Button btDeselectall=(Button) findViewById(R.id.bt_deselectall);
        btDeselectall.setOnClickListener(clickListener);

        tv=(TextView) findViewById(R.id.tv);
    }

    // 初始化数据
    private void initDate() {
        for (int i = 0; i < 15; i++) {
            Person person=new Person(i, "复选框"+i, false);
            listPerson.add(person);
        }
    }

    private class MyAdapter extends BaseAdapter{
        @Override
        public int getCount() {
            return listPerson.size();
        }

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

        @Override
        public long getItemId(int position) {
            return listPerson.get(position).getId();
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            if (convertView == null) {
                // 获得ViewHolder对象
                holder = new ViewHolder();
                // 导入布局并赋值给convertview
                convertView=View.inflate(MainActivity.this, R.layout.listviewitem, null);
                holder.tv = (TextView) convertView.findViewById(R.id.item_tv);
                holder.cb = (CheckBox) convertView.findViewById(R.id.item_cb);
                // 为view设置标签
                convertView.setTag(holder);
            } else {
                // 取出holder
                holder = (ViewHolder) convertView.getTag();
            }
            Person person=listPerson.get(position);
            // 设置list中TextView的显示
            holder.tv.setText(person.getName());
            // 根据isSelected来设置checkbox的选中状况
            holder.cb.setChecked(person.isSelected());
            holder.cb.setTag(person);
            holder.cb.setOnClickListener(clickListener);
            return convertView;
        }

        public  class ViewHolder {
            TextView tv;
            CheckBox cb;
        }
    }

    private OnClickListener clickListener=new OnClickListener() {
        @Override
        public void onClick(View v) {
            switch (v.getId()) {
            case R.id.item_cb:
                Person person = (Person) v.getTag();
                person.setSelected(!person.isSelected());
                if (person.isSelected()) {
                    selectPerson.add(person);
                }else {
                    selectPerson.remove(person);
                }
                tv.setText("您选中了"+selectPerson.size()+"条数据!!");
                break;
            case R.id.bt_selectall:
                selected(true);
                break;
            case R.id.bt_deselectall:
                selected(false);
                break;
            default:
                break;
            }
        }
    };

    private void selected(boolean selected){//选择或者取消选中
        selectPerson.clear();
        for(int i=0;i
            Person person=listPerson.get(i);
            person.setSelected(selected);
            if(selected==true){
                selectPerson.add(person);
            }
        }
        mAdapter.notifyDataSetChanged();
        tv.setText("您选中了"+selectPerson.size()+"条数据!!");
    }
}

效果图如下: