Introduction - If you have any usage issues, please Google them yourself
Android pop-up menu of the application' s source code, the source menu layout framework 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.