[Android UI 教學(1)] 文字型功能表設計

請先參考[Android UI 教學(1)] 文字型功能表設計1. 建立專案

2. 在下圖中第一個紅色框位置上按下滑鼠右鍵，選擇｢Source｣選單，再選｢Override/Implement Method｣。

3. 把onCreateOptionsMenu()和onOptionsItemSelected()兩個事件程序打勾，按下OK鍵後，會產生相對應的事件處理程序的框架。



4. 指令說明
public abstract MenuItem add (int groupId, int itemId, int order, CharSequence title)
功能:增加功能選單
groupId: 群組代碼
itemId:選項代碼
order:選單次序
title:選單標題

5. 輸入下列程式(藍色)

package com.example.menu;

import android.app.Activity;
import android.os.Bundle;

import android.view.Menu;
import android.view.MenuItem;


public class MenuDesignActivity extends Activity {
    /** Called when the activity is first created. */

 public static final int ADD_ID = Menu.FIRST ;
 public static final int DELETE_ID = Menu.FIRST + 1;
 public static final int ABOUT_ID = Menu.FIRST + 2;
 public static final int EXIT_ID = Menu.FIRST + 3;

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

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  // TODO Auto-generated method stub

     menu.add(0, ADD_ID, 0, "Add");
     menu.add(0, DELETE_ID, 1, "Del");
     menu.add(0, ABOUT_ID, 2, "About");
     menu.add(0, EXIT_ID, 3, "Exit");

  return super.onCreateOptionsMenu(menu);
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  // TODO Auto-generated method stub

     switch(item.getItemId()){
     case ADD_ID:
      setTitle("新增項目");
      break;
     case DELETE_ID:
      setTitle("刪除項目");
      break;
     case ABOUT_ID:
      setTitle("關於");
      break;
     case EXIT_ID:
      finish();
      break;
     }

  return super.onOptionsItemSelected(item);
 }
    
    
}