android對話框之AlertDialog.Builder類的setSingleChoiceItems

經過AlertDialog.Builder類的setSingleChoiceItems方法能夠建立帶單按鈕的列表：方法以下：

一、從資源文件中裝載數據：

public Builder setSingleChoiceItems(int itemsId, int checkedItem, final OnClickListener listener)

二、從數據集中裝載數據

public Builder setSingleChoiceItems(Cursor cursor, int checkedItem, String labelColumn, final OnClickListener listener)

三、從字符串數組中裝載數據

public Builder setSingleChoiceItems(CharSequence[] items, int checkedItem, final OnClickListener listener)

四、從ListAdapter對象中裝載數據

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;


publicclass SingleChoiceItemsTest extends Activityimplements OnClickListener

{

private String[] province = new String[] { "上海", "北京", "湖南", "湖北", "海南" };

private Button btnSingleChoiceList;

// 單擊事件對象的實例

private ButtonOnClick buttonOnClick = new ButtonOnClick(1);


/** Called when the activity is first created. */

@Override

publicvoid onCreate(Bundle savedInstanceState)

    {

super.onCreate(savedInstanceState);

       setContentView(R.layout.main);

       btnSingleChoiceList = (Button) findViewById(R.id.btnSingleChoice);

       btnSingleChoiceList.setOnClickListener(this);

    }


@Override

publicvoid onClick(View v)

    {

       showSingleChoiceButton();

    }


// 在單選選項中顯示 肯定和取消按鈕

//buttonOnClickg變量的數據類型是ButtonOnClick,一個單擊事件類

privatevoid showSingleChoiceButton()

    {

       AlertDialog.Builder builder = new AlertDialog.Builder(this);

       builder.setTitle("請選擇省份");

       builder.setSingleChoiceItems(province, 0, buttonOnClick);

       builder.setPositiveButton("肯定", buttonOnClick);

       builder.setNegativeButton("取消", buttonOnClick);

       builder.show();

    }


privateclass ButtonOnClick implements DialogInterface.OnClickListener

    {



privateint index; // 表示選項的索引

public ButtonOnClick(int index)

       {

this.index = index;

       }


@Override

publicvoid onClick(DialogInterface dialog,int which)

       {

// which表示單擊的按鈕索引，全部的選項索引都是大於0，按鈕索引都是小於0的。

if (which >= 0)

           {

//若是單擊的是列表項，將當前列表項的索引保存在index中。

//若是想單擊列表項後關閉對話框，可在此處調用dialog.cancel()

//或是用dialog.dismiss()方法。

              index = which;

           }

else

           {

//用戶單擊的是【肯定】按鈕

if (which == DialogInterface.BUTTON_POSITIVE)

              {

//顯示用戶選擇的是第幾個列表項。

final AlertDialog ad = new AlertDialog.Builder(

                          SingleChoiceItemsTest.this).setMessage(

"你選擇的地區是：" + index + ":" + province[index]).show();

//五秒鐘後自動關閉。

                  Handler hander = new Handler();

                  Runnable runnable = new Runnable()

                  {


@Override

publicvoid run()

                     {

                         ad.dismiss();

                     }

                  };

                  hander.postDelayed(runnable, 5 * 1000);

              }

//用戶單擊的是【取消】按鈕

elseif (which == DialogInterface.BUTTON_NEGATIVE)

              {

                  Toast.makeText(SingleChoiceItemsTest.this, "你沒有選擇任何東西",

                          Toast.LENGTH_LONG);

              }

           }

       }

    }

}