Widgets (6, menu)

Menu is the Android menubar control, which is triggered when the Phone menu key is selected, the basic function is as follows:

 Public Boolean Oncreateoptionsmenu (Menu menu) {    = menu.add (Menu.none, Menu_id2, Menu.none, "Item 2"    ); = Menu.add (Menu.none, MENU_ID3, Menu.none, "menu item 3");     = Menu.add (Menu.none, Menu_id4, Menu.none, "menu item 4");     = Menu.add (Menu.none, MENU_ID5, Menu.none, "menu item 5");

To handle menu item selection events in Onoptionselectitem:

    @Override    publicboolean  onoptionsitemselected (MenuItem item) {                 if (Item.getitemid () =//The Itemid here corresponds to the second parameter            when initializing the menu = Toast.maketext(This, "menu item 1") , toast.length_short);            T.show ();

Menu support adds level two menus, as follows:

submenu sub = Menu.addsubmenu (Menu.none, Menu_id6, Menu.none, "menu item 6 >>"//Parameter with Menu.add method    Sub.seticon (r.drawable.ic_launcher);        Sub.add (0, 60, 0, "Sub-menu 6.1");          Sub.add (

Menu can add an icon to MenuItem through SetIcon, but the version after android4.0 needs to be set iconenable:

Clazz = Class.forName ("Com.android.internal.view.menu.MenuBuilder"boolean. ) Class);  M.setaccessible (true); M.invoke (menu,true// execute setoptionaliconsvisiblesub.seticon (r.drawable.ic_ Launcher);

Widgets (6, menu)