Android 列表多选对话框

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.test11.MainActivity" >

   <Button 
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="btn1"
       android:onClick="btn1Onclick"/>

</LinearLayout>

package com.example.test11;

import android.support.v7.app.ActionBarActivity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

public class MainActivity extends ActionBarActivity {
	private AlertDialog dlg;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		create();
	}
	public void create(){
		final String[] items={"AAA","BBB","CCC","DDD"};
		dlg=new AlertDialog.Builder(this)
		.setIcon(R.drawable.ic_launcher)
		.setTitle("多选列表")
		.setMultiChoiceItems(items, new boolean[]{false,true,false,false}, new DialogInterface.OnMultiChoiceClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which, boolean isChecked) {
				// TODO Auto-generated method stub
				Log.i("TEST", which+";"+isChecked);
			}
		})
		.setPositiveButton("确定", null)
		.create();
	}
	
	public void btn1Onclick(View view){
		dlg.show();
	}
}