Android中ListView与CheckBox结合----多选与记录

很多时候我们会用到ListView与CheckBox结合的东西，比如一个清单，可以用来多选，但是很多人似乎也在这个地方遇到很多问题，我刚开始学的时候也是遇到假选问题，当列表中数量多的之后，我勾选一个，滑动页面会发现条目也勾选上了， 这明显与我们的要求不符合，后来网上找了找资料，用HashMap来记录一个CheckBox的勾选记录就解决了

以下是实现的的一个小Demo

这是XML ListView 每个item文件清单

<?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="vertical" >    <RelativeLayout        android:id="@+id/outpatient_check_hospital"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginBottom="5.0dip"        android:layout_marginLeft="12.599976dip"        android:layout_marginRight="12.599976dip"        android:layout_marginTop="5.0dip"        android:gravity="center_vertical"         android:background="#AAAAAA">        <LinearLayout            android:id="@+id/linear_layout_up"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:layout_margin="10.0dip"            android:gravity="center"            android:orientation="horizontal" >            <ImageView                android:layout_width="10dip"                android:layout_height="10dip"                android:adjustViewBounds="false" />            <TextView                android:id="@+id/tv_device_name"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_weight="2.0"                android:text="名称"                android:textColor="#ff323232"                android:textSize="16.0sp"                android:typeface="monospace" />            <CheckBox                android:id="@+id/checkBox1"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="" />                    </LinearLayout>    </RelativeLayout></LinearLayout>

这是显示ListView的页面，简单初始化几个数据

public class MainActivity extends Activity {private ListView listView;private ListViewAdapter adapter;private String[] beans = new String[] { "1", "2", "3", "4", "5", "6", "7","8", "9", "10", "11", "12", "13","14","15","16","17","18","19" };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {// TODO Auto-generated method stubLog.i("htp", "beans.size:" + beans.length);listView = (ListView) findViewById(R.id.listView1);adapter = new ListViewAdapter(MainActivity.this, beans);listView.setAdapter(adapter);listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);}

下面就写一个Adapter类，我们依然继承BaseAdapter类。这里我们使用一个HashMap<Integer,boolean>的键值来记录checkbox在对应位置的选中状况

package com.example.listviewcheckboxdemo;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.TextView;public class ListViewAdapter extends BaseAdapter {private Context context;private String[] beans;// 用来控制CheckBox的选中状况private static HashMap<Integer, Boolean> isSelected;class ViewHolder {TextView tvName;CheckBox cb;}public ListViewAdapter(Context context, String[] beans) {// TODO Auto-generated constructor stubthis.beans = beans;this.context = context;isSelected = new HashMap<Integer, Boolean>();// 初始化数据initDate();}// 初始化isSelected的数据private void initDate() {for (int i = 0; i < beans.length; i++) {getIsSelected().put(i, false);}}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn beans.length;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn beans[position];}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stub// 页面ViewHolder holder;String bean = beans[position];LayoutInflater inflater = LayoutInflater.from(context);if (convertView == null) {convertView = inflater.inflate(R.layout.assist_device_binding_list_item, null);holder = new ViewHolder();holder.cb = (CheckBox) convertView.findViewById(R.id.checkBox1);holder.tvName = (TextView) convertView.findViewById(R.id.tv_device_name);convertView.setTag(holder);} else {// 取出holderholder = (ViewHolder) convertView.getTag();}holder.tvName.setText(bean);// 监听checkBox并根据原来的状态来设置新的状态holder.cb.setOnClickListener(new View.OnClickListener() {public void onClick(View v) {if (isSelected.get(position)) {isSelected.put(position, false);setIsSelected(isSelected);} else {isSelected.put(position, true);setIsSelected(isSelected);}}});// 根据isSelected来设置checkbox的选中状况holder.cb.setChecked(getIsSelected().get(position));return convertView;}public static HashMap<Integer, Boolean> getIsSelected() {return isSelected;}public static void setIsSelected(HashMap<Integer, Boolean> isSelected) {ListViewAdapter.isSelected = isSelected;}}

需要的朋友直接拷贝修改就可以了