android 显示单选列表对话框 builder.setSingleChoiceItems

通过AlertDialog.Builder类的setSingleChoiceItems方法可以创建带单按钮的列表：方法如下：
1、从资源文件中装载数据：
public Builder setSingleChoiceItems(int itemsId, int checkedItem, final OnClickListener listener)
2、从数据集中装载数据
public Builder setSingleChoiceItems(Cursor cursor, int checkedItem, String labelColumn, final OnClickListener listener)
3、从字符串数组中装载数据
public Builder setSingleChoiceItems(CharSequence[] items, int checkedItem, final OnClickListener listener)
4、从ListAdapter对象中装载数据
public Builder setSingleChoiceItems(ListAdapter adpater, int checkedItem, final OnClickListener listener)



package com.js.sinlgechoiceitemstest;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class SingleChoiceItemsTest extends Activityimplements OnClickListener
{
private String[] province = new String[] { "上海", "北京", "湖南", "湖北", "海南" };
private Button btnSingleChoiceList;
// 单击事件对象的实例
private ButtonOnClick buttonOnClick =
new ButtonOnClick(1);

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

btnSingleChoiceList = (Button) findViewById(R.id.btnSingleChoice);
btnSingleChoiceList.setOnClickListener(this);
}

@Override
public void onClick(View v)
{
showSingleChoiceButton();
}

// 在单选选项中显示 确定和取消按钮
//buttonOnClickg变量的数据类型是ButtonOnClick,一个单击事件类
private void showSingleChoiceButton()
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("请选择省份");
builder.setSingleChoiceItems(province, 0, buttonOnClick);
builder.setPositiveButton("确定", buttonOnClick);
builder.setNegativeButton("取消", buttonOnClick);
builder.show();
}

private class ButtonOnClick implements DialogInterface.OnClickListener
{

private int index; // 表示选项的索引

public ButtonOnClick(int index)
{
this.index = index;
}

@Override
public void onClick(DialogInterface dialog,int which)
{
// which表示单击的按钮索引，所有的选项索引都是大于0，按钮索引都是小于0的。
if (which >= 0)
{
//如果单击的是列表项，将当前列表项的索引保存在index中。
//如果想单击列表项后关闭对话框，可在此处调用dialog.cancel()
//或是用dialog.dismiss()方法。
index = which;
}
else
{
//用户单击的是【确定】按钮
if (which == DialogInterface.BUTTON_POSITIVE)
{
//显示用户选择的是第几个列表项。
final AlertDialog ad =
new AlertDialog.Builder(
SingleChoiceItemsTest.this).setMessage(
"你选择的地区是：" + index + ":" + province[index]).show();
//五秒钟后自动关闭。
Handler hander = new Handler();
Runnable runnable = new Runnable()
{

@Override
public void run()
{
ad.dismiss();
}
};
hander.postDelayed(runnable, 5 * 1000);
}
//用户单击的是【取消】按钮
else if (which == DialogInterface.BUTTON_NEGATIVE)
{
Toast.makeText(SingleChoiceItemsTest.this, "你没有选择任何东西",
Toast.LENGTH_LONG);
}
}
}
}
}