Android学习之menu

核心提示：19. // The order position of the item20. int menuItemOrder = Menu.NONE;21.22. menu.add(groupId, MENU_GROUPITEM1, menuItemOrder, "Item 1 in group");23.

19. // The order position of the item

20. int menuItemOrder = Menu.NONE;

21.

22. menu.add(groupId, MENU_GROUPITEM1, menuItemOrder, "Item 1 in group");

23. menu.add(groupId, MENU_GROUPITEM2, menuItemOrder, "Item 2 in group")

24. .setChecked(true);

25. menu.setGroupCheckable(groupId, true, true); //这句要写在group item的最后

26.

27. SubMenu subMenu = menu.addSubMenu("Sub Menu 1");

28. subMenu.add("Sub Menu Item")

29. .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {

30. @Override

31. public boolean onMenuItemClick(MenuItem item) {

32. Toast.makeText(HelloDemo.this,

33. "Sub Menu Item selected",

34. Toast.LENGTH_SHORT).show();

35. return true; //true表示完成当前item的click处理，不再传递到父类处理

36. }

37. });

38.

39. menu.add("Item 3").setCheckable(true).setChecked(true);

40. }

private static final int MENU_GROUPITEM1 = Menu.FIRST + 8; private static final int MENU_GROUPITEM2 = Menu.FIRST + 9; private static final int MENU_ITEM1 = Menu.FIRST + 10; public void onCreate(Bundle savedInstanceState) { ... registerForContextMenu(findViewById(R.id.edittext)); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); menu.add(1,MENU_ITEM1,Menu.NONE, "Item 1").setCheckable(true).setChecked(false); // Group ID int groupId = 0; // The order position of the item int menuItemOrder = Menu.NONE; menu.add(groupId, MENU_GROUPITEM1, menuItemOrder, "Item 1 in group"); menu.add(groupId, MENU_GROUPITEM2, menuItemOrder, "Item 2 in group") .setChecked(true); menu.setGroupCheckable(groupId, true, true); //这句要写在group item的最后 SubMenu subMenu = menu.addSubMenu("Sub Menu 1"); subMenu.add("Sub Menu Item")