android对话框之AlertDialog.Builder类的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)
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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);

}

}

}

}

}