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<Person> listPerson;
	private List<Person> selectPerson=new ArrayList<Person>();
	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<Person>();
		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<listPerson.size();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: