从操作栏下拉菜单 - 允许拖放图标绘制到屏幕

as the title suggests I'm trying to add code to my app which allows the user to click on an item in the action bar menu which then unfolds a drop down menu (spinner class?) containing a few options such as lamp, tv etc. - each with an icon. The user will then be able to select one of these and drag and drop the icon (or an image representing the icon) to the canvas where it is then drawn. What is the best way to go about this?as the title suggests I'm trying to add code to