Menu物件

Menu物件
選單，通常用於修改AP設定使用的物件
簡易的做法
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        menu.add(0, ITEM1, 0, "item1");
        menu.add(0, ITEM2, 0, "item2");
        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item) {
        super.onOptionsItemSelected(item);
        switch(item.getItemId()){
            case ITEM1:
                break;
            case ITEM2:
                break;
        }
        return true;
    }

使用resource
在res下新增menu的資料夾，加入xml檔
    <menu xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:id="@+id/new_game"
                 android:icon="@drawable/ic_new_game"
                 android:title="@string/new_game" />
        <item android:id="@+id/help"
                 android:icon="@drawable/ic_help"
                 android:title="@string/help" />
    </menu>

然後在.java加入
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.game_menu, menu);
        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.new_game:
            //newGame();
            break;
        case R.id.help:
            //showHelp();
            break;
        default:
            return super.onOptionsItemSelected(item);
            break;
        }
        return true;
    }

其他作法可參照官方網站
Dev Guide - Framework Topics - User Interface - Creating Menus