Android Listview与Checkbox结合实现选择，删除，显示选择结果

 

网上有很多Listview与Checbox结合的例子，大多都存在这样那样的问题，要么选择异常，要么滚动Listview后选择消失，要么删除异常，要么无法正常显示选择结果。

以下为真正无误的，实用的Listview与Checkbox结合实现选择，删除，显示选择结果。

MainActivity.java

package com.example.listviewcheckbox;import java.util.ArrayList;import java.util.List;import com.example.listviewcheckbox.R;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.View.OnClickListener;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.CheckBox;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {Button show;Button select;Button deselect;ListView lv;Context mContext;MyListAdapter adapter;List<Integer> selected = new ArrayList<Integer>();private List<Item> items;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        //mContext = getApplicationContext();        mContext = MainActivity.this;        select = (Button)findViewById(R.id.select);        deselect = (Button)findViewById(R.id.deselect);        show = (Button)findViewById(R.id.show);        lv = (ListView)findViewById(R.id.lv);                items = new ArrayList<Item>();                for(int i=0;i< 50;i++){    Item item = new Item();        item.name = "wxz"+i;    item.address = "ZhengZhou";    item.checked = false;    items.add(item);      }                adapter = new MyListAdapter(items);        lv.setAdapter(adapter);                lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position,long id) {// TODO Auto-generated method stubitems.get(position).checked = !items.get(position).checked;adapter.notifyDataSetChanged(); Toast.makeText(mContext, "单击:"+items.get(position).name +",id:"+id, Toast.LENGTH_SHORT).show();}                });                select.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubint k = items.size();for(int i=0; i<k; i++){ items.get(i).checked = true;}adapter.notifyDataSetChanged();}});                deselect.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubint k = items.size();for(int i=0; i<k; i++){ items.get(i).checked = false;}adapter.notifyDataSetChanged();}});                show.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {selected.clear();int k = items.size();for(int i=0; i<k; i++){if(items.get(i).checked){selected.add(i);}}k = selected.size();if(k ==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<k; i++){int j = selected.get(i);sb.append("ID="+(j)+" Name ="+items.get(j).name+"\n");}AlertDialog.Builder builder2 = new AlertDialog.Builder(MainActivity.this);builder2.setMessage(sb.toString());builder2.show();}}});    }        //自定义ListView适配器    class MyListAdapter extends BaseAdapter{               //private Context context;        LayoutInflater inflater;    public List<Item> items;        public MyListAdapter(List<Item> items){    this.items = items;    inflater = LayoutInflater.from(mContext);        }        @Overridepublic int getCount() {// 返回值控制该Adapter将会显示多少个列表项        return items == null ? 0 : items.size();}@Overridepublic Object getItem(int position) {// 返回值决定第position处的列表项的内容return items.get(position);}@Overridepublic long getItemId(int position) {// 返回值决定第position处的列表项的IDreturn position;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {    ViewHolder holder = null;Item item = items.get(position);    if (convertView == null) {Log.e("MainActivity","position1 = "+position);convertView = inflater.inflate(R.layout.listitem, null);holder = new ViewHolder();holder.btnDel = (Button)convertView.findViewById(R.id.btnDel);holder.cbCheck = (CheckBox)convertView.findViewById(R.id.cbCheck);holder.tvName = (TextView)convertView.findViewById(R.id.tvName);holder.tvAddress = (TextView)convertView.findViewById(R.id.tvAddress);holder.tvName.setText(item.name);holder.tvAddress.setText(item.address);    convertView.setTag(holder);    }else{Log.e("MainActivity","position2 = "+position);holder = (ViewHolder)convertView.getTag();                holder.cbCheck.setChecked(item.checked);                holder.tvName.setText(item.name);                holder.tvAddress.setText(item.address);              }    holder.btnDel.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v) {// TODO Auto-generated method stub  //删除list中的数据                    items.remove(position);                    //通知列表数据修改                    adapter.notifyDataSetChanged();}        });holder.cbCheck.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {CheckBox cb = (CheckBox)v;items.get(position).checked = cb.isChecked(); }});      return convertView;  }        }        static class ViewHolder{    public CheckBox cbCheck;    public TextView tvName;    public TextView tvAddress;    public Button btnDel;        }        class Item {        private String name;        private String address;        private Boolean checked;    }}                                                                                                                                                                                            

 列表项listitem.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="wrap_content"    android:descendantFocusability="blocksDescendants"    android:orientation="horizontal" >    <CheckBox        android:id="@+id/cbCheck"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginTop="5dp"        android:focusable="false" />    <ImageView        android:id="@+id/ivPhoto"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/ic_launcher"/>    <TextView        android:id="@+id/tvName"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginTop="5dp"        android:layout_weight="1"        android:text="Name"        android:textSize="18sp" />    <TextView        android:id="@+id/tvAddress"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginTop="5dp"        android:layout_weight="1"        android:text="Address"        android:textSize="18sp" />    <Button        android:id="@+id/btnDel"        android:layout_width="wrap_content"        android:layout_height="40dp"        android:layout_marginRight="16dp"        android:layout_marginTop="5dp"        android:focusable="false"        android:text="删除"        android:textSize="16sp" /></LinearLayout>

main.xml

<?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:orientation="horizontal"        android:layout_width="fill_parent"        android:layout_height="wrap_content" >        <Button             android:id="@+id/select"            android:layout_width="100dp"            android:layout_height="wrap_content"            android:text="Select"/>        <Button            android:id="@+id/deselect"             android:layout_width="100dp"            android:layout_height="wrap_content"            android:text="Deselect" />        <Button         android:id="@+id/show"         android:layout_width="100dp"         android:layout_height="wrap_content"         android:text="Show"/>            </LinearLayout>      <ListView       android:id="@+id/lv"       android:layout_width="fill_parent"       android:layout_height="fill_parent"       android:fastScrollEnabled="true"       android:fastScrollAlwaysVisible="true"/></LinearLayout>

源码：http://download.csdn.net/detail/xinzheng_wang/5973407