Android ListView组合CheckBox实现多选获取数据

最近用到ListView组合CheckBox实现多选功能，自己写了一个Demo

MainActivity代码

package com.xudl.checkdemo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {
	private Button mButtonGetValue; // 获取数据按钮
	private ListView mListView;// 数据展示列表
	private CheckboxAdapter listItemAdapter; // ListView数据展示适配器
	private ArrayList> listData;// ListView展示数据源

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		initView();
		registerListener();
		listData = new ArrayList>();
		initListViewData(listData);
		loadData();
	}

	/**
	 * 初始化布局
	 */
	private void initView() {
		mButtonGetValue = (Button) findViewById(R.id.get_value);
		mListView = (ListView) findViewById(R.id.list);
	}

	private void registerListener() {
		mButtonGetValue.setOnClickListener(new OnClickListenerImpl());
	}

	/**
	 * 加载数据
	 */
	private void loadData() {
		listItemAdapter = new CheckboxAdapter(this, listData);
		mListView.setAdapter(listItemAdapter);
	}

	/**
	 * 初始化ListView数据源
	 * 
	 * @param listData
	 */
	private void initListViewData(ArrayList> listData) {
		if (listData == null)
			listData = new ArrayList>();
		String[] name = { "William", "Charles", "Linng", "Json", "Bob", "Carli", "William", "Charles", "Linng", "Json", "Bob", "Carli" };
		String[] id = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12" };
		for (int i = 0; i < 12; i++) {
			HashMap map = new HashMap();
			map.put("friend_image", R.drawable.ic_launcher);
			map.put("friend_username", name[i]);
			map.put("friend_id", id[i]);
			map.put("selected", false);
			// 向容器添加数据
			listData.add(map);
		}
	}

	// 获取Checkbox值的点击事件
	private class OnClickListenerImpl implements OnClickListener {

		@Override
		public void onClick(View v) {
			HashMap> state = listItemAdapter.state;
			String options = "选中数据:";

			for (int j = 0; j < listItemAdapter.getCount(); j++) {
				System.out.println("state.get(" + j + ")==" + state.get(j));
				if (state.get(j) != null) {
					@SuppressWarnings("unchecked")
					HashMap map = (HashMap) listItemAdapter.getItem(j);
					String username = map.get("friend_username").toString();
					String id = map.get("friend_id").toString();
					options += "\n" + id + "." + username;
				}
			}
			// 展示数据
			Toast.makeText(getApplicationContext(), options, Toast.LENGTH_LONG).show();
		}
	}
}
 
  
 
  
 
  
 
  
 
  
Adapter适配器代码
 
  
package com.xudl.checkdemo;

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

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.TextView;

public class CheckboxAdapter extends BaseAdapter {
	private Context context;
	private ArrayList> listData;
	//checkbox选中的数据
	HashMap> state = new HashMap>();

	// 构造方法初始化数据
	public CheckboxAdapter(Context context, ArrayList> listData) {
		this.context = context;
		this.listData = listData;
	}

	@Override
	public int getCount() {
		return (listData != null && !listData.isEmpty())?listData.size():0;
	}

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

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

	@Override
	public View getView(final int position, View convertView, ViewGroup parent) {

		LayoutInflater mInflater = LayoutInflater.from(context);
		convertView = mInflater.inflate(R.layout.item_list, null);
		ImageView image = (ImageView) convertView.findViewById(R.id.friend_image);
		final HashMap viewData = listData.get(position);
		image.setBackgroundResource((Integer) viewData.get("friend_image"));
		TextView username = (TextView) convertView.findViewById(R.id.friend_username);
		username.setText((String) viewData.get("friend_username"));
		TextView id = (TextView) convertView.findViewById(R.id.friend_id);
		id.setText((String) viewData.get("friend_id"));
		CheckBox check = (CheckBox) convertView.findViewById(R.id.selected);
		check.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			@Override
			public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
				if (isChecked) {
					state.put(position, viewData);
				} else {
					state.remove(position);
				}
			}
		});
		check.setChecked((state.get(position) == null ? false : true));
		return convertView;
	}
}
 
  
 
  
 
  
 
  
activity_main布局代码
 
  
 
  



    

    

 
  
 
  

 适配器文件item_list代码 
  
 
  



    

    

    

    

 
  
 
  

 效果如下