Menu
public
interface
Menu
android.view.Menu |
Interface for managing the items in a menu.
By default, every Activity supports an options menu of actions or options.
You can add items to this menu and handle clicks on your additions. The
easiest way of adding menu items is inflating an XML file into the
Menu
via MenuInflater
. The easiest way of attaching code to
clicks is via Activity#onOptionsItemSelected(MenuItem)
and
Activity#onContextItemSelected(MenuItem)
.
Different menu types support different features:
- Context menus: Do not support item shortcuts and item icons.
- Options menus: The icon menus do not support item check
marks and only show the item's
condensed title
. The expanded menus (only available if six or more menu items are visible, reached via the 'More' item in the icon menu) do not show item icons, and item check marks are discouraged. - Sub menus: Do not support item icons, or nested sub menus.
Developer Guides
For more information about creating menus, read the Menus developer guide.
Summary
Constants | |
---|---|
int |
CATEGORY_ALTERNATIVE
Category code for the order integer for items/groups that are alternative actions on the data that is currently displayed -- or/add this with your base value. |
int |
CATEGORY_CONTAINER
Category code for the order integer for items/groups that are part of a container -- or/add this with your base value. |
int |
CATEGORY_SECONDARY
Category code for the order integer for items/groups that are user-supplied secondary (infrequently used) options -- or/add this with your base value. |
int |
CATEGORY_SYSTEM
Category code for the order integer for items/groups that are provided by the system -- or/add this with your base value. |
int |
FIRST
First value for group and item identifier integers. |
int |
FLAG_ALWAYS_PERFORM_CLOSE
Flag for |
int |
FLAG_APPEND_TO_GROUP
Flag for |
int |
FLAG_PERFORM_NO_CLOSE
Flag for |
int |
NONE
Value to use for group and item identifier integers when you don't care about them. |
int |
SUPPORTED_MODIFIERS_MASK
A mask of all supported modifiers for MenuItem's keyboard shortcuts |
Public methods | |
---|---|
abstract
MenuItem
|
add(int groupId, int itemId, int order, CharSequence title)
Add a new item to the menu. |
abstract
MenuItem
|
add(int titleRes)
Add a new item to the menu. |
abstract
MenuItem
|
add(CharSequence title)
Add a new item to the menu. |
abstract
MenuItem
|
add(int groupId, int itemId, int order, int titleRes)
Variation on |
abstract
int
|
addIntentOptions(int groupId, int itemId, int order, ComponentName caller, Intent[] specifics, Intent intent, int flags, MenuItem[] outSpecificItems)
Add a group of menu items corresponding to actions that can be performed for a particular Intent. |
abstract
SubMenu
|
addSubMenu(CharSequence title)
Add a new sub-menu to the menu. |
abstract
SubMenu
|
addSubMenu(int groupId, int itemId, int order, int titleRes)
Variation on |
abstract
SubMenu
|
addSubMenu(int groupId, int itemId, int order, CharSequence title)
Add a new sub-menu to the menu. |
abstract
SubMenu
|
addSubMenu(int titleRes)
Add a new sub-menu to the menu. |
abstract
void
|
clear()
Remove all existing items from the menu, leaving it empty as if it had just been created. |
abstract
void
|
close()
Closes the menu, if open. |
abstract
MenuItem
|
findItem(int id)
Return the menu item with a particular identifier. |
abstract
MenuItem
|
getItem(int index)
Gets the menu item at the given index. |
abstract
boolean
|
hasVisibleItems()
Return whether the menu currently has item items that are visible. |
abstract
boolean
|
isShortcutKey(int keyCode, KeyEvent event)
Is a keypress one of the defined shortcut keys for this window. |
abstract
boolean
|
performIdentifierAction(int id, int flags)
Execute the menu item action associated with the given menu identifier. |
abstract
boolean
|
performShortcut(int keyCode, KeyEvent event, int flags)
Execute the menu item action associated with the given shortcut character. |
abstract
void
|
removeGroup(int groupId)
Remove all items in the given group. |
abstract
void
|
removeItem(int id)
Remove the item with the given identifier. |
abstract
void
|
setGroupCheckable(int group, boolean checkable, boolean exclusive)
Control whether a particular group of items can show a check mark. |
default
void
|
setGroupDividerEnabled(boolean groupDividerEnabled)
Enable or disable the group dividers. |
abstract
void
|
setGroupEnabled(int group, boolean enabled)
Enable or disable all menu items that are in the given group. |
abstract
void
|
setGroupVisible(int group, boolean visible)
Show or hide all menu items that are in the given group. |
abstract
void
|
setQwertyMode(boolean isQwerty)
Control whether the menu should be running in qwerty mode (alphabetic shortcuts) or 12-key mode (numeric shortcuts). |
abstract
int
|
size()
Get the number of items in the menu. |
Constants
CATEGORY_ALTERNATIVE
public static final int CATEGORY_ALTERNATIVE
Category code for the order integer for items/groups that are alternative actions on the data that is currently displayed -- or/add this with your base value.
Constant Value: 262144 (0x00040000)
CATEGORY_CONTAINER
public static final int CATEGORY_CONTAINER
Category code for the order integer for items/groups that are part of a container -- or/add this with your base value.
Constant Value: 65536 (0x00010000)
CATEGORY_SECONDARY
public static final int CATEGORY_SECONDARY
Category code for the order integer for items/groups that are user-supplied secondary (infrequently used) options -- or/add this with your base value.
Constant Value: 196608 (0x00030000)
CATEGORY_SYSTEM
public static final int CATEGORY_SYSTEM
Category code for the order integer for items/groups that are provided by the system -- or/add this with your base value.
Constant Value: 131072 (0x00020000)
FIRST
public static final int FIRST
First value for group and item identifier integers.
Constant Value: 1 (0x00000001)
FLAG_ALWAYS_PERFORM_CLOSE
public static final int FLAG_ALWAYS_PERFORM_CLOSE
Flag for performShortcut(int, android.view.KeyEvent, int)
: if set, always
close the menu after executing the shortcut. Closing the menu also resets
the prepared state.
Constant Value: 2 (0x00000002)
FLAG_APPEND_TO_GROUP
public static final int FLAG_APPEND_TO_GROUP
Flag for addIntentOptions(int, int, int, ComponentName, Intent, Intent, int, MenuItem)
: if set, do not automatically remove
any existing menu items in the same group.
Constant Value: 1 (0x00000001)
FLAG_PERFORM_NO_CLOSE
public static final int FLAG_PERFORM_NO_CLOSE
Flag for performShortcut(int, KeyEvent, int)
: if set, do not close the menu after
executing the shortcut.
Constant Value: 1 (0x00000001)
NONE
public static final int NONE
Value to use for group and item identifier integers when you don't care about them.
Constant Value: 0 (0x00000000)
SUPPORTED_MODIFIERS_MASK
public static final int SUPPORTED_MODIFIERS_MASK
A mask of all supported modifiers for MenuItem's keyboard shortcuts
Constant Value: 69647 (0x0001100f)
Public methods
add
public abstract MenuItem add (int groupId, int itemId, int order, CharSequence title)
Add a new item to the menu. This item displays the given title for its label.
Parameters | |
---|---|
groupId |
int : The group identifier that this item should be part of.
This can be used to define groups of items for batch state
changes. Normally use NONE if an item should not be in a
group. |
itemId |
int : Unique item ID. Use NONE if you do not need a
unique ID. |
order |
int : The order for the item. Use NONE if you do not care
about the order. See MenuItem#getOrder() . |
title |
CharSequence : The text to display for the item. |
Returns | |
---|---|
MenuItem |
The newly added menu item. |
add
public abstract MenuItem add (int titleRes)
Add a new item to the menu. This item displays the given title for its label.
Parameters | |
---|---|
titleRes |
int : Resource identifier of title string. |
Returns | |
---|---|
MenuItem |
The newly added menu item. |
add
public abstract MenuItem add (CharSequence title)
Add a new item to the menu. This item displays the given title for its label.
Parameters | |
---|---|
title |
CharSequence : The text to display for the item. |
Returns | |
---|---|
MenuItem |
The newly added menu item. |
add
public abstract MenuItem add (int groupId, int itemId, int order, int titleRes)
Variation on add(int, int, int, java.lang.CharSequence)
that takes a
string resource identifier instead of the string itself.
Parameters | |
---|---|
groupId |
int : The group identifier that this item should be part of.
This can also be used to define groups of items for batch state
changes. Normally use NONE if an item should not be in a
group. |
itemId |
int : Unique item ID. Use NONE if you do not need a
unique ID. |
order |
int : The order for the item. Use NONE if you do not care
about the order. See MenuItem#getOrder() . |
titleRes |
int : Resource identifier of title string. |
Returns | |
---|---|
MenuItem |
The newly added menu item. |
addIntentOptions
public abstract int addIntentOptions (int groupId, int itemId, int order, ComponentName caller, Intent[] specifics, Intent intent, int flags, MenuItem[] outSpecificItems)
Add a group of menu items corresponding to actions that can be performed
for a particular Intent. The Intent is most often configured with a null
action, the data that the current activity is working with, and includes
either the Intent#CATEGORY_ALTERNATIVE
or
Intent#CATEGORY_SELECTED_ALTERNATIVE
to find activities that have
said they would like to be included as optional action. You can, however,
use any Intent you want.
See PackageManager.queryIntentActivityOptions(ComponentName, Intent, Intent, int)
for more * details on the caller, specifics, and
intent arguments. The list returned by that function is used
to populate the resulting menu items.
All of the menu items of possible options for the intent will be added
with the given group and id. You can use the group to control ordering of
the items in relation to other items in the menu. Normally this function
will automatically remove any existing items in the menu in the same
group and place a divider above and below the added items; this behavior
can be modified with the flags parameter. For each of the
generated items MenuItem#setIntent
is called to associate the
appropriate Intent with the item; this means the activity will
automatically be started for you without having to do anything else.
Parameters | |
---|---|
groupId |
int : The group identifier that the items should be part of.
This can also be used to define groups of items for batch state
changes. Normally use NONE if the items should not be in
a group. |
itemId |
int : Unique item ID. Use NONE if you do not need a
unique ID. |
order |
int : The order for the items. Use NONE if you do not
care about the order. See MenuItem#getOrder() . |
caller |
ComponentName : The current activity component name as defined by
queryIntentActivityOptions(). |
specifics |
Intent : Specific items to place first as defined by
queryIntentActivityOptions(). |
intent |
Intent : Intent describing the kinds of items to populate in the
list as defined by queryIntentActivityOptions(). |
flags |
int : Additional options controlling how the items are added. |
outSpecificItems |
MenuItem : Optional array in which to place the menu items
that were generated for each of the specifics that were
requested. Entries may be null if no activity was found for that
specific action. |
Returns | |
---|---|
int |
The number of menu items that were added. |
addSubMenu
public abstract SubMenu addSubMenu (CharSequence title)
Add a new sub-menu to the menu. This item displays the given title for
its label. To modify other attributes on the submenu's menu item, use
SubMenu#getItem()
.
Parameters | |
---|---|
title |
CharSequence : The text to display for the item. |
Returns | |
---|---|
SubMenu |
The newly added sub-menu |
addSubMenu
public abstract SubMenu addSubMenu (int groupId, int itemId, int order, int titleRes)
Variation on addSubMenu(int, int, int, java.lang.CharSequence)
that takes
a string resource identifier for the title instead of the string itself.
Parameters | |
---|---|
groupId |
int : The group identifier that this item should be part of.
This can also be used to define groups of items for batch state
changes. Normally use NONE if an item should not be in a group. |
itemId |
int : Unique item ID. Use NONE if you do not need a unique ID. |
order |
int : The order for the item. Use NONE if you do not care about the
order. See MenuItem#getOrder() . |
titleRes |
int : Resource identifier of title string. |
Returns | |
---|---|
SubMenu |
The newly added sub-menu |
addSubMenu
public abstract SubMenu addSubMenu (int groupId, int itemId, int order, CharSequence title)
Add a new sub-menu to the menu. This item displays the given
title for its label. To modify other attributes on the
submenu's menu item, use SubMenu#getItem()
.
Note that you can only have one level of sub-menus, i.e. you cannnot add
a subMenu to a subMenu: An UnsupportedOperationException
will be
thrown if you try.
Parameters | |
---|---|
groupId |
int : The group identifier that this item should be part of.
This can also be used to define groups of items for batch state
changes. Normally use NONE if an item should not be in a
group. |
itemId |
int : Unique item ID. Use NONE if you do not need a
unique ID. |
order |
int : The order for the item. Use NONE if you do not care
about the order. See MenuItem#getOrder() . |
title |
CharSequence : The text to display for the item. |
Returns | |
---|---|
SubMenu |
The newly added sub-menu |
addSubMenu
public abstract SubMenu addSubMenu (int titleRes)
Add a new sub-menu to the menu. This item displays the given title for
its label. To modify other attributes on the submenu's menu item, use
SubMenu#getItem()
.
Parameters | |
---|---|
titleRes |
int : Resource identifier of title string. |
Returns | |
---|---|
SubMenu |
The newly added sub-menu |
clear
public abstract void clear ()
Remove all existing items from the menu, leaving it empty as if it had just been created.
findItem
public abstract MenuItem findItem (int id)
Return the menu item with a particular identifier.
Parameters | |
---|---|
id |
int : The identifier to find. |
Returns | |
---|---|
MenuItem |
The menu item object, or null if there is no item with this identifier. |
getItem
public abstract MenuItem getItem (int index)
Gets the menu item at the given index.
Parameters | |
---|---|
index |
int : The index of the menu item to return. |
Returns | |
---|---|
MenuItem |
The menu item. |
Throws | |
---|---|
IndexOutOfBoundsException |
when index < 0 || >= size() |
hasVisibleItems
public abstract boolean hasVisibleItems ()
Return whether the menu currently has item items that are visible.
Returns | |
---|---|
boolean |
True if there is one or more item visible, else false. |
isShortcutKey
public abstract boolean isShortcutKey (int keyCode, KeyEvent event)
Is a keypress one of the defined shortcut keys for this window.
Parameters | |
---|---|
keyCode |
int : the key code from KeyEvent to check. |
event |
KeyEvent : the KeyEvent to use to help check. |
Returns | |
---|---|
boolean |
performIdentifierAction
public abstract boolean performIdentifierAction (int id, int flags)
Execute the menu item action associated with the given menu identifier.
Parameters | |
---|---|
id |
int : Identifier associated with the menu item. |
flags |
int : Additional option flags or 0. |
Returns | |
---|---|
boolean |
If the given identifier exists and is shown, returns true; else returns false. |
See also:
performShortcut
public abstract boolean performShortcut (int keyCode, KeyEvent event, int flags)
Execute the menu item action associated with the given shortcut character.
Parameters | |
---|---|
keyCode |
int : The keycode of the shortcut key. |
event |
KeyEvent : Key event message. |
flags |
int : Additional option flags or 0. |
Returns | |
---|---|
boolean |
If the given shortcut exists and is shown, returns true; else returns false. |
See also:
removeGroup
public abstract void removeGroup (int groupId)
Remove all items in the given group.
Parameters | |
---|---|
groupId |
int : The group to be removed. If there are no items in this
group, nothing happens. |
removeItem
public abstract void removeItem (int id)
Remove the item with the given identifier.
Parameters | |
---|---|
id |
int : The item to be removed. If there is no item with this
identifier, nothing happens. |
setGroupCheckable
public abstract void setGroupCheckable (int group, boolean checkable, boolean exclusive)
Control whether a particular group of items can show a check mark. This
is similar to calling MenuItem#setCheckable
on all of the menu items
with the given group identifier, but in addition you can control whether
this group contains a mutually-exclusive set items. This should be called
after the items of the group have been added to the menu.
Parameters | |
---|---|
group |
int : The group of items to operate on. |
checkable |
boolean : Set to true to allow a check mark, false to
disallow. The default is false. |
exclusive |
boolean : If set to true, only one item in this group can be
checked at a time; checking an item will automatically
uncheck all others in the group. If set to false, each
item can be checked independently of the others. |
setGroupDividerEnabled
public void setGroupDividerEnabled (boolean groupDividerEnabled)
Enable or disable the group dividers.
Parameters | |
---|---|
groupDividerEnabled |
boolean |
setGroupEnabled
public abstract void setGroupEnabled (int group, boolean enabled)
Enable or disable all menu items that are in the given group.
Parameters | |
---|---|
group |
int : The group of items to operate on. |
enabled |
boolean : If true the items will be enabled, else they will be disabled. |
See also:
setGroupVisible
public abstract void setGroupVisible (int group, boolean visible)
Show or hide all menu items that are in the given group.
Parameters | |
---|---|
group |
int : The group of items to operate on. |
visible |
boolean : If true the items are visible, else they are hidden. |
See also:
setQwertyMode
public abstract void setQwertyMode (boolean isQwerty)
Control whether the menu should be running in qwerty mode (alphabetic shortcuts) or 12-key mode (numeric shortcuts).
Parameters | |
---|---|
isQwerty |
boolean : If true the menu will use alphabetic shortcuts; else it
will use numeric shortcuts. |
size
public abstract int size ()
Get the number of items in the menu. Note that this will change any times items are added or removed from the menu.
Returns | |
---|---|
int |
The item count. |