Android之選項按鈕對話方塊

main.xml布局檔案

<?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">
<EditText android:text="" 
        android:id="@+id/editText"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" 
        android:editable="false"
        android:cursorVisible="false" />
<Button android:text="顯示單選對話方塊" 
        android:id="@+id/button"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

array.xml數組

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="hobby">        
<item>遊泳</item>            
<item>打籃球</item>            
<item>登山</item>        
</string-array>
</resources>

AlertDialog類

package com.ljq.dialog;

import android.app.Activity;
import android.app.Dialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class AlertDialog extends Activity {
private EditText editText;
private final static int DIALOG=1;

    @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        editText=(EditText)findViewById(R.id.editText);
        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// 顯示對話方塊
                showDialog(DIALOG);
            }
        });
    }

/**
     * 建立選項按鈕對話方塊
*/
    @Override
protected Dialog onCreateDialog(int id) {
        Dialog dialog=null;
switch (id) {
case DIALOG:
            Builder builder=new android.app.AlertDialog.Builder(this);
//設定對話方塊的表徵圖
            builder.setIcon(R.drawable.header);
//設定對話方塊的標題
            builder.setTitle("選項按鈕對話方塊");
//0: 預設第一個選項按鈕被選中
            builder.setSingleChoiceItems(R.array.hobby, 0, new OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
                    String hoddy=getResources().getStringArray(R.array.hobby)[which];
                    editText.setText("您選擇了： "+hoddy);
                }
            });

//添加一個確定按鈕
            builder.setPositiveButton(" 確 定 ", new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int which) {

                }
            });
//建立一個選項按鈕對話方塊
            dialog=builder.create();
break;
        }
return dialog;
    }

}

運行結果