实现Android应用的弹出菜单的源代码，本源码可让Android新手了解到菜单布局框架、菜单栏、选项视图、菜单项切换、设置选项点击事件、添加标题栏和选项、添加菜单视图、menu菜单获得焦点 如果没有获得焦点menu菜单中的控件事件无法响应、获取当前选中菜单项序号等！Android的新手可参考一下本源码。-Android pop-up menu of the application' s source code, the source menu layout fr a mework allows Android novice learned menu bar option to view menu items switch, set the option to click event, add a title bar and option to add a menu view menu menu get If the focus does not get focus menu menu not respond to control events, to get the current selected menu item number! Android novice can refer to this source.