Android checkbox的listView具体操作方法

本文主要实现在自定义的ListView布局中加入CheckBox控件，通过判断用户是否选中CheckBox来对ListView的选中项进行相应的操作。通过一个Demo来展示该功能，选中ListView中的某一项，然后点击Button按钮来显示选中了哪些项。
1、程序结构图如下：

其中Person.java是实体类，MainActivity.java是Activity组件类。listitem.xml是自定义的列表每项布局文件。
2、listitem.xml布局文件源码如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent">
 <LinearLayout
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="horizontal"
  android:descendantFocusability="blocksDescendants">
  <CheckBox
   android:id="@+id/list.select"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"/>
  <TextView
   android:id="@+id/list.name"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_weight="1"
   android:text="Name"
   android:layout_gravity="center"
   android:textSize="20dp"
   android:layout_marginLeft="10dp"/>
  <TextView
   android:id="@+id/list.address"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_weight="1"
   android:text="Address"
   android:layout_gravity="center"
   android:textSize="20dp"/>
 </LinearLayout>
</LinearLayout>

3、 main.xml布局文件源码如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent">
 <Button
  android:id="@+id/show"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="Show"/>
 <ListView
  android:id="@+id/lvperson"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"/>
</LinearLayout>

4、Person.java实体类源码如下：

package com.andyidea.bean; 

public class Person { 

 private String name;
 private String address; 

 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public String getAddress() {
  return address;
 }
 public void setAddress(String address) {
  this.address = address;
 } 

} 

5、MainActivity.java类源码如下：

package com.andyidea.listview; 

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

import com.andyidea.bean.Person; 

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
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 { 

 Button show;
 ListView lv;
 List<Person> persons = new ArrayList<Person>();
 Context mContext;
 MyListAdapter adapter;
 List<Integer> listItemID = new ArrayList<Integer>(); 

 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  mContext = getApplicationContext();
  show = (Button)findViewById(R.id.show);
  lv = (ListView)findViewById(R.id.lvperson); 

  initPersonData();
  adapter = new MyListAdapter(persons);
  lv.setAdapter(adapter); 

  show.setOnClickListener(new View.OnClickListener() { 

   @Override
   public void onClick(View v) { 

    listItemID.clear();
    for(int i=0;i<adapter.mChecked.size();i++){
     if(adapter.mChecked.get(i)){
      listItemID.add(i);
     }
    } 

    if(listItemID.size()==0){
     AlertDialog.Builder builder1 = new AlertDialog.Builder(MainActivity.this);
     builder1.setMessage("没有选中任何记录");
     builder1.show();
    }else{
     StringBuilder sb = new StringBuilder(); 

     for(int i=0;i<listItemID.size();i++){
      sb.append("ItemID="+listItemID.get(i)+" . ");
     }
     AlertDialog.Builder builder2 = new AlertDialog.Builder(MainActivity.this);
     builder2.setMessage(sb.toString());
     builder2.show();
    }
   }
  });
 } 

 /**
  * 模拟数据
  */
 private void initPersonData(){
  Person mPerson;
  for(int i=1;i<=12;i++){
   mPerson = new Person();
   mPerson.setName("Andy"+i);
   mPerson.setAddress("GuangZhou"+i);
   persons.add(mPerson);
  }
 } 

 //自定义ListView适配器
 class MyListAdapter extends BaseAdapter{
  List<Boolean> mChecked;
  List<Person> listPerson;
  HashMap<Integer,View> map = new HashMap<Integer,View>(); 

  public MyListAdapter(List<Person> list){
   listPerson = new ArrayList<Person>();
   listPerson = list; 

   mChecked = new ArrayList<Boolean>();
   for(int i=0;i<list.size();i++){
    mChecked.add(false);
   }
  } 

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

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

  @Override
  public long getItemId(int position) {
   return position;
  } 

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
   View view;
   ViewHolder holder = null; 

   if (map.get(position) == null) {
    Log.e("MainActivity","position1 = "+position); 

    LayoutInflater mInflater = (LayoutInflater) mContext
      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    view = mInflater.inflate(R.layout.listitem, null);
    holder = new ViewHolder();
    holder.selected = (CheckBox)view.findViewById(R.id.list_select);
    holder.name = (TextView)view.findViewById(R.id.list_name);
    holder.address = (TextView)view.findViewById(R.id.list_address);
    final int p = position;
    map.put(position, view);
    holder.selected.setOnClickListener(new View.OnClickListener() { 

     @Override
     public void onClick(View v) {
      CheckBox cb = (CheckBox)v;
      mChecked.set(p, cb.isChecked());
     }
    });
    view.setTag(holder);
   }else{
    Log.e("MainActivity","position2 = "+position);
    view = map.get(position);
    holder = (ViewHolder)view.getTag();
   } 

   holder.selected.setChecked(mChecked.get(position));
   holder.name.setText(listPerson.get(position).getName());
   holder.address.setText(listPerson.get(position).getAddress()); 

   return view;
  } 

 } 

 static class ViewHolder{
  CheckBox selected;
  TextView name;
  TextView address;
 }
}

程序运行后的结果如下：

希望本文所述对大家学习Android软件编程有所帮助。