android弹出多选框

JAVA代码：

package com.meiguihuayu;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

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 meiguihuayu extends Activity {
 private String[] areas = new String[]{"全部","我爱你们", "你爱我们", "他爱我们", "他们爱我", "你们爱我", "什么是爱" };
 private boolean[] areaState=new boolean[]{true, false, false, false, false, false,false };

 private ListView areaCheckListView;

    private Button Button;
     @Override
     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.main);    
         Button=(Button)findViewById(R.id.Button);

         Button.setOnClickListener(new CheckBoxClickListener());

     }
    

     class AlertClickListener implements OnClickListener{

   @Override

   public void onClick(View v) {

    new AlertDialog.Builder(meiguihuayu.this).setTitle("选择区域").setItems(areas,new DialogInterface.OnClickListener(){

       public void onClick(DialogInterface dialog, int which){

        Toast.makeText(meiguihuayu.this, "您已经选择了: " + which + ":" + areas[which],Toast.LENGTH_LONG).show();

        dialog.dismiss();

       }

    }).show();

   }

     }

    

     class CheckBoxClickListener implements OnClickListener{

   @Override

   public void onClick(View v) {

    AlertDialog ad = new AlertDialog.Builder(meiguihuayu.this)

    .setTitle("选择区域")

    .setMultiChoiceItems(areas,areaState,new DialogInterface.OnMultiChoiceClickListener(){

       public void onClick(DialogInterface dialog,int whichButton, boolean isChecked){

        //点击某个区域

       }

      }).setPositiveButton("确定",new DialogInterface.OnClickListener(){

       public void onClick(DialogInterface dialog,int whichButton){

        String s = "您选择了:";

        for (int i = 0; i < areas.length; i++){

         if (areaCheckListView.getCheckedItemPositions().get(i)){

          s += i + ":"+ areaCheckListView.getAdapter().getItem(i)+ "  ";

         }else{

          areaCheckListView.getCheckedItemPositions().get(i,false);

         }

        }

        if (areaCheckListView.getCheckedItemPositions().size() > 0){

         Toast.makeText(meiguihuayu.this, s, Toast.LENGTH_LONG).show();

        }else{

          //没有选择

        }

        dialog.dismiss();

       }

      }).setNegativeButton("取消", null).create();

    areaCheckListView = ad.getListView();

    ad.show();

   }

     }

}  

 

XML代码：

<?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/Button"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="多选"

/>

</LinearLayout>