belongs to Maven artifact com.android.support:appcompat-v7:28.0.0-alpha1
ActionBar
public
abstract
class
ActionBar
extends Object
| java.lang.Object | |
| ↳ | android.support.v7.app.ActionBar |
A primary toolbar within the activity that may display the activity title, application-level navigation affordances, and other interactive items.
The action bar appears at the top of an activity's window when the activity uses the
AppCompat's AppCompat theme (or one of its descendant themes).
You may otherwise add the action bar by calling requestFeature(FEATURE_SUPPORT_ACTION_BAR) or by
declaring it in a custom theme with the
windowActionBar property.
The action bar may be represented by any Toolbar widget within the application layout.
The application may signal to the Activity which Toolbar should be treated as the Activity's
action bar. Activities that use this feature should use one of the supplied
.NoActionBar themes, set the
windowActionBar attribute to
false or otherwise not request the window feature.
If your activity has an options menu, you can make select items accessible directly from the action bar as "action items". You can also modify various characteristics of the action bar or remove it completely.
The navigation button (formerly "Home") takes over the space previously occupied by the
application icon. Apps wishing to express a stronger branding should use their brand colors
heavily in the action bar and other application chrome or use a logo
in place of their standard title text.
From your activity, you can retrieve an instance of ActionBar by calling getSupportActionBar() getSupportActionBar()}.
In some cases, the action bar may be overlayed by another bar that enables contextual actions,
using an ActionMode. For example, when the user selects one or more items in
your activity, you can enable an action mode that offers actions specific to the selected
items, with a UI that temporarily replaces the action bar. Although the UI may occupy the
same space, the ActionMode APIs are distinct and independent from those for
ActionBar.
Developer Guides
For information about how to use the action bar, including how to add action items, navigation modes and more, read the Action Bar developer guide.
Summary
Nested classes | |
|---|---|
class |
ActionBar.LayoutParams
Per-child layout information associated with action bar custom views. |
interface |
ActionBar.OnMenuVisibilityListener
Listener for receiving events when action bar menus are shown or hidden. |
interface |
ActionBar.OnNavigationListener
This interface was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
class |
ActionBar.Tab
This class was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
interface |
ActionBar.TabListener
This interface was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
Constants | |
|---|---|
int |
DISPLAY_HOME_AS_UP
Display the 'home' element such that it appears as an 'up' affordance. |
int |
DISPLAY_SHOW_CUSTOM
Show the custom view if one has been set. |
int |
DISPLAY_SHOW_HOME
Show 'home' elements in this action bar, leaving more space for other navigation elements. |
int |
DISPLAY_SHOW_TITLE
Show the activity title and subtitle, if present. |
int |
DISPLAY_USE_LOGO
Use logo instead of icon if available. |
int |
NAVIGATION_MODE_LIST
This constant was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
int |
NAVIGATION_MODE_STANDARD
This constant was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
int |
NAVIGATION_MODE_TABS
This constant was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
Public constructors | |
|---|---|
ActionBar()
|
|
Public methods | |
|---|---|
abstract
void
|
addOnMenuVisibilityListener(ActionBar.OnMenuVisibilityListener listener)
Add a listener that will respond to menu visibility change events. |
abstract
void
|
addTab(ActionBar.Tab tab, int position)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
addTab(ActionBar.Tab tab)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
addTab(ActionBar.Tab tab, int position, boolean setSelected)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
addTab(ActionBar.Tab tab, boolean setSelected)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
View
|
getCustomView()
|
abstract
int
|
getDisplayOptions()
|
float
|
getElevation()
Get the Z-axis elevation of the action bar in pixels. |
abstract
int
|
getHeight()
Retrieve the current height of the ActionBar. |
int
|
getHideOffset()
Return the current vertical offset of the action bar. |
abstract
int
|
getNavigationItemCount()
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
int
|
getNavigationMode()
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
int
|
getSelectedNavigationIndex()
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
ActionBar.Tab
|
getSelectedTab()
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
CharSequence
|
getSubtitle()
Returns the current ActionBar subtitle in standard mode. |
abstract
ActionBar.Tab
|
getTabAt(int index)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
int
|
getTabCount()
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
Context
|
getThemedContext()
Returns a |
abstract
CharSequence
|
getTitle()
Returns the current ActionBar title in standard mode. |
abstract
void
|
hide()
Hide the ActionBar if it is currently showing. |
boolean
|
isHideOnContentScrollEnabled()
Return whether the action bar is configured to scroll out of sight along with
a |
abstract
boolean
|
isShowing()
|
abstract
ActionBar.Tab
|
newTab()
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
removeAllTabs()
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
removeOnMenuVisibilityListener(ActionBar.OnMenuVisibilityListener listener)
Remove a menu visibility listener. |
abstract
void
|
removeTab(ActionBar.Tab tab)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
removeTabAt(int position)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
selectTab(ActionBar.Tab tab)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
setBackgroundDrawable(Drawable d)
Set the ActionBar's background. |
abstract
void
|
setCustomView(View view)
Set the action bar into custom navigation mode, supplying a view for custom navigation. |
abstract
void
|
setCustomView(int resId)
Set the action bar into custom navigation mode, supplying a view for custom navigation. |
abstract
void
|
setCustomView(View view, ActionBar.LayoutParams layoutParams)
Set the action bar into custom navigation mode, supplying a view for custom navigation. |
abstract
void
|
setDisplayHomeAsUpEnabled(boolean showHomeAsUp)
Set whether home should be displayed as an "up" affordance. |
abstract
void
|
setDisplayOptions(int options, int mask)
Set selected display options. |
abstract
void
|
setDisplayOptions(int options)
Set display options. |
abstract
void
|
setDisplayShowCustomEnabled(boolean showCustom)
Set whether a custom view should be displayed, if set. |
abstract
void
|
setDisplayShowHomeEnabled(boolean showHome)
Set whether to include the application home affordance in the action bar. |
abstract
void
|
setDisplayShowTitleEnabled(boolean showTitle)
Set whether an activity title/subtitle should be displayed. |
abstract
void
|
setDisplayUseLogoEnabled(boolean useLogo)
Set whether to display the activity logo rather than the activity icon. |
void
|
setElevation(float elevation)
Set the Z-axis elevation of the action bar in pixels. |
void
|
setHideOffset(int offset)
Set the current hide offset of the action bar. |
void
|
setHideOnContentScrollEnabled(boolean hideOnContentScroll)
Enable hiding the action bar on content scroll. |
void
|
setHomeActionContentDescription(CharSequence description)
Set an alternate description for the Home/Up action, when enabled. |
void
|
setHomeActionContentDescription(int resId)
Set an alternate description for the Home/Up action, when enabled. |
void
|
setHomeAsUpIndicator(int resId)
Set an alternate drawable to display next to the icon/logo/title
when |
void
|
setHomeAsUpIndicator(Drawable indicator)
Set an alternate drawable to display next to the icon/logo/title
when |
void
|
setHomeButtonEnabled(boolean enabled)
Enable or disable the "home" button in the corner of the action bar. |
abstract
void
|
setIcon(Drawable icon)
Set the icon to display in the 'home' section of the action bar. |
abstract
void
|
setIcon(int resId)
Set the icon to display in the 'home' section of the action bar. |
abstract
void
|
setListNavigationCallbacks(SpinnerAdapter adapter, ActionBar.OnNavigationListener callback)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
setLogo(int resId)
Set the logo to display in the 'home' section of the action bar. |
abstract
void
|
setLogo(Drawable logo)
Set the logo to display in the 'home' section of the action bar. |
abstract
void
|
setNavigationMode(int mode)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
abstract
void
|
setSelectedNavigationItem(int position)
This method was deprecated in API level 24.1.0. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. |
void
|
setSplitBackgroundDrawable(Drawable d)
Set the ActionBar's split background. |
void
|
setStackedBackgroundDrawable(Drawable d)
Set the ActionBar's stacked background. |
abstract
void
|
setSubtitle(CharSequence subtitle)
Set the action bar's subtitle. |
abstract
void
|
setSubtitle(int resId)
Set the action bar's subtitle. |
abstract
void
|
setTitle(CharSequence title)
Set the action bar's title. |
abstract
void
|
setTitle(int resId)
Set the action bar's title. |
abstract
void
|
show()
Show the ActionBar if it is not currently showing. |
Inherited methods | |
|---|---|
From
class
java.lang.Object
| |
Constants
DISPLAY_HOME_AS_UP
int DISPLAY_HOME_AS_UP
Display the 'home' element such that it appears as an 'up' affordance. e.g. show an arrow to the left indicating the action that will be taken. Set this flag if selecting the 'home' button in the action bar to return up by a single level in your UI rather than back to the top level or front page.
Setting this option will implicitly enable interaction with the home/up
button. See setHomeButtonEnabled(boolean).
Constant Value: 4 (0x00000004)
DISPLAY_SHOW_CUSTOM
int DISPLAY_SHOW_CUSTOM
Show the custom view if one has been set.
Constant Value: 16 (0x00000010)
DISPLAY_SHOW_HOME
int DISPLAY_SHOW_HOME
Show 'home' elements in this action bar, leaving more space for other navigation elements. This includes logo and icon.
Constant Value: 2 (0x00000002)
DISPLAY_SHOW_TITLE
int DISPLAY_SHOW_TITLE
Show the activity title and subtitle, if present.
See also:
Constant Value: 8 (0x00000008)
DISPLAY_USE_LOGO
int DISPLAY_USE_LOGO
Use logo instead of icon if available. This flag will cause appropriate navigation modes to use a wider logo in place of the standard icon.
Constant Value: 1 (0x00000001)
NAVIGATION_MODE_LIST
int NAVIGATION_MODE_LIST
This constant was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
List navigation mode. Instead of static title text this mode presents a list menu for navigation within the activity. e.g. this might be presented to the user as a dropdown list.
Constant Value: 1 (0x00000001)
NAVIGATION_MODE_STANDARD
int NAVIGATION_MODE_STANDARD
This constant was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Standard navigation mode. Consists of either a logo or icon and title text with an optional subtitle. Clicking any of these elements will dispatch onOptionsItemSelected to the host Activity with a MenuItem with item ID android.R.id.home.
Constant Value: 0 (0x00000000)
NAVIGATION_MODE_TABS
int NAVIGATION_MODE_TABS
This constant was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Tab navigation mode. Instead of static title text this mode presents a series of tabs for navigation within the activity.
Constant Value: 2 (0x00000002)
Public constructors
Public methods
addOnMenuVisibilityListener
void addOnMenuVisibilityListener (ActionBar.OnMenuVisibilityListener listener)
Add a listener that will respond to menu visibility change events.
| Parameters | |
|---|---|
listener |
ActionBar.OnMenuVisibilityListener: The new listener to add
|
addTab
void addTab (ActionBar.Tab tab, int position)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Add a tab for use in tabbed navigation mode. The tab will be inserted at
position. If this is the first tab to be added it will become
the selected tab.
| Parameters | |
|---|---|
tab |
ActionBar.Tab: The tab to add |
position |
int: The new position of the tab |
addTab
void addTab (ActionBar.Tab tab)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Add a tab for use in tabbed navigation mode. The tab will be added at the end of the list. If this is the first tab to be added it will become the selected tab.
| Parameters | |
|---|---|
tab |
ActionBar.Tab: Tab to add |
addTab
void addTab (ActionBar.Tab tab, int position, boolean setSelected)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Add a tab for use in tabbed navigation mode. The tab will be inserted at
position.
| Parameters | |
|---|---|
tab |
ActionBar.Tab: The tab to add |
position |
int: The new position of the tab |
setSelected |
boolean: True if the added tab should become the selected tab. |
addTab
void addTab (ActionBar.Tab tab, boolean setSelected)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Add a tab for use in tabbed navigation mode. The tab will be added at the end of the list.
| Parameters | |
|---|---|
tab |
ActionBar.Tab: Tab to add |
setSelected |
boolean: True if the added tab should become the selected tab. |
getDisplayOptions
int getDisplayOptions ()
| Returns | |
|---|---|
int |
The current set of display options. |
getElevation
float getElevation ()
Get the Z-axis elevation of the action bar in pixels.
The action bar's elevation is the distance it is placed from its parent surface. Higher values are closer to the user.
| Returns | |
|---|---|
float |
Elevation value in pixels |
getHeight
int getHeight ()
Retrieve the current height of the ActionBar.
| Returns | |
|---|---|
int |
The ActionBar's height |
getHideOffset
int getHideOffset ()
Return the current vertical offset of the action bar.
The action bar's current hide offset is the distance that the action bar is currently
scrolled offscreen in pixels. The valid range is 0 (fully visible) to the action bar's
current measured height (fully invisible).
| Returns | |
|---|---|
int |
The action bar's offset toward its fully hidden state in pixels |
getNavigationItemCount
int getNavigationItemCount ()
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Get the number of navigation items present in the current navigation mode.
| Returns | |
|---|---|
int |
Number of navigation items. |
getNavigationMode
int getNavigationMode ()
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Returns the current navigation mode. The result will be one of:
| Returns | |
|---|---|
int |
The current navigation mode. |
getSelectedNavigationIndex
int getSelectedNavigationIndex ()
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Get the position of the selected navigation item in list or tabbed navigation modes.
| Returns | |
|---|---|
int |
Position of the selected item. |
getSelectedTab
ActionBar.Tab getSelectedTab ()
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Returns the currently selected tab if in tabbed navigation mode and there is at least one tab present.
| Returns | |
|---|---|
ActionBar.Tab |
The currently selected tab or null |
getSubtitle
CharSequence getSubtitle ()
Returns the current ActionBar subtitle in standard mode.
Returns null if getNavigationMode() would not return
NAVIGATION_MODE_STANDARD.
| Returns | |
|---|---|
CharSequence |
The current ActionBar subtitle or null. |
getTabAt
ActionBar.Tab getTabAt (int index)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Returns the tab at the specified index.
| Parameters | |
|---|---|
index |
int: Index value in the range 0-get |
| Returns | |
|---|---|
ActionBar.Tab |
|
getTabCount
int getTabCount ()
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Returns the number of tabs currently registered with the action bar.
| Returns | |
|---|---|
int |
Tab count |
getThemedContext
Context getThemedContext ()
Returns a Context with an appropriate theme for creating views that
will appear in the action bar. If you are inflating or instantiating custom views
that will appear in an action bar, you should use the Context returned by this method.
(This includes adapters used for list navigation mode.)
This will ensure that views contrast properly against the action bar.
| Returns | |
|---|---|
Context |
A themed Context for creating views |
getTitle
CharSequence getTitle ()
Returns the current ActionBar title in standard mode.
Returns null if getNavigationMode() would not return
NAVIGATION_MODE_STANDARD.
| Returns | |
|---|---|
CharSequence |
The current ActionBar title or null. |
hide
void hide ()
Hide the ActionBar if it is currently showing.
If the window hosting the ActionBar does not have the feature
FEATURE_ACTION_BAR_OVERLAY it will resize application
content to fit the new space available.
Instead of calling this function directly, you can also cause an
ActionBar using the overlay feature to hide through
View.SYSTEM_UI_FLAG_FULLSCREEN.
Hiding the ActionBar through this system UI flag allows you to more
seamlessly hide it in conjunction with other screen decorations.
isHideOnContentScrollEnabled
boolean isHideOnContentScrollEnabled ()
Return whether the action bar is configured to scroll out of sight along with
a nested scrolling child.
| Returns | |
|---|---|
boolean |
true if hide-on-content-scroll is enabled |
See also:
isShowing
boolean isShowing ()
| Returns | |
|---|---|
boolean |
true if the ActionBar is showing, false otherwise.
|
newTab
ActionBar.Tab newTab ()
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Create and return a new ActionBar.Tab.
This tab will not be included in the action bar until it is added.
| Returns | |
|---|---|
ActionBar.Tab |
A new Tab |
See also:
removeAllTabs
void removeAllTabs ()
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Remove all tabs from the action bar and deselect the current tab.
removeOnMenuVisibilityListener
void removeOnMenuVisibilityListener (ActionBar.OnMenuVisibilityListener listener)
Remove a menu visibility listener. This listener will no longer receive menu visibility change events.
| Parameters | |
|---|---|
listener |
ActionBar.OnMenuVisibilityListener: A listener to remove that was previously added
|
removeTab
void removeTab (ActionBar.Tab tab)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Remove a tab from the action bar. If the removed tab was selected it will be deselected and another tab will be selected if present.
| Parameters | |
|---|---|
tab |
ActionBar.Tab: The tab to remove |
removeTabAt
void removeTabAt (int position)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Remove a tab from the action bar. If the removed tab was selected it will be deselected and another tab will be selected if present.
| Parameters | |
|---|---|
position |
int: Position of the tab to remove |
selectTab
void selectTab (ActionBar.Tab tab)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Select the specified tab. If it is not a child of this action bar it will be added.
Note: If you want to select by index, use setSelectedNavigationItem(int).
| Parameters | |
|---|---|
tab |
ActionBar.Tab: Tab to select |
setBackgroundDrawable
void setBackgroundDrawable (Drawable d)
Set the ActionBar's background. This will be used for the primary action bar.
| Parameters | |
|---|---|
d |
Drawable: Background drawable |
setCustomView
void setCustomView (View view)
Set the action bar into custom navigation mode, supplying a view for custom navigation. Custom navigation views appear between the application icon and any action buttons and may use any space available there. Common use cases for custom navigation views might include an auto-suggesting address bar for a browser or other navigation mechanisms that do not translate well to provided navigation modes.
| Parameters | |
|---|---|
view |
View: Custom navigation view to place in the ActionBar.
|
setCustomView
void setCustomView (int resId)
Set the action bar into custom navigation mode, supplying a view for custom navigation.
Custom navigation views appear between the application icon and any action buttons and may use any space available there. Common use cases for custom navigation views might include an auto-suggesting address bar for a browser or other navigation mechanisms that do not translate well to provided navigation modes.
The display option DISPLAY_SHOW_CUSTOM must be set for
the custom view to be displayed.
| Parameters | |
|---|---|
resId |
int: Resource ID of a layout to inflate into the ActionBar. |
See also:
setCustomView
void setCustomView (View view, ActionBar.LayoutParams layoutParams)
Set the action bar into custom navigation mode, supplying a view for custom navigation.
Custom navigation views appear between the application icon and any action buttons and may use any space available there. Common use cases for custom navigation views might include an auto-suggesting address bar for a browser or other navigation mechanisms that do not translate well to provided navigation modes.
The display option DISPLAY_SHOW_CUSTOM must be set for
the custom view to be displayed.
| Parameters | |
|---|---|
view |
View: Custom navigation view to place in the ActionBar. |
layoutParams |
ActionBar.LayoutParams: How this custom view should layout in the bar. |
See also:
setDisplayHomeAsUpEnabled
void setDisplayHomeAsUpEnabled (boolean showHomeAsUp)
Set whether home should be displayed as an "up" affordance. Set this to true if selecting "home" returns up by a single level in your UI rather than back to the top level or front page.
To set several display options at once, see the setDisplayOptions methods.
| Parameters | |
|---|---|
showHomeAsUp |
boolean: true to show the user that selecting home will return one
level up rather than to the top level of the app. |
setDisplayOptions
void setDisplayOptions (int options,
int mask)
Set selected display options. Only the options specified by mask will be changed.
To change all display option bits at once, see setDisplayOptions(int).
Example: setDisplayOptions(0, DISPLAY_SHOW_HOME) will disable the
DISPLAY_SHOW_HOME option.
setDisplayOptions(DISPLAY_SHOW_HOME, DISPLAY_SHOW_HOME | DISPLAY_USE_LOGO)
will enable DISPLAY_SHOW_HOME and disable DISPLAY_USE_LOGO.
| Parameters | |
|---|---|
options |
int: A combination of the bits defined by the DISPLAY_ constants
defined in ActionBar. |
mask |
int: A bit mask declaring which display options should be changed.
|
setDisplayOptions
void setDisplayOptions (int options)
Set display options. This changes all display option bits at once. To change
a limited subset of display options, see setDisplayOptions(int, int).
| Parameters | |
|---|---|
options |
int: A combination of the bits defined by the DISPLAY_ constants
defined in ActionBar.
|
setDisplayShowCustomEnabled
void setDisplayShowCustomEnabled (boolean showCustom)
Set whether a custom view should be displayed, if set.
To set several display options at once, see the setDisplayOptions methods.
| Parameters | |
|---|---|
showCustom |
boolean: true if the currently set custom view should be displayed, false otherwise. |
setDisplayShowHomeEnabled
void setDisplayShowHomeEnabled (boolean showHome)
Set whether to include the application home affordance in the action bar. Home is presented as either an activity icon or logo.
To set several display options at once, see the setDisplayOptions methods.
| Parameters | |
|---|---|
showHome |
boolean: true to show home, false otherwise. |
setDisplayShowTitleEnabled
void setDisplayShowTitleEnabled (boolean showTitle)
Set whether an activity title/subtitle should be displayed.
To set several display options at once, see the setDisplayOptions methods.
| Parameters | |
|---|---|
showTitle |
boolean: true to display a title/subtitle if present. |
setDisplayUseLogoEnabled
void setDisplayUseLogoEnabled (boolean useLogo)
Set whether to display the activity logo rather than the activity icon. A logo is often a wider, more detailed image.
To set several display options at once, see the setDisplayOptions methods.
| Parameters | |
|---|---|
useLogo |
boolean: true to use the activity logo, false to use the activity icon. |
setElevation
void setElevation (float elevation)
Set the Z-axis elevation of the action bar in pixels.
The action bar's elevation is the distance it is placed from its parent surface. Higher values are closer to the user.
| Parameters | |
|---|---|
elevation |
float: Elevation value in pixels
|
setHideOffset
void setHideOffset (int offset)
Set the current hide offset of the action bar.
The action bar's current hide offset is the distance that the action bar is currently
scrolled offscreen in pixels. The valid range is 0 (fully visible) to the action bar's
current measured height (fully invisible).
| Parameters | |
|---|---|
offset |
int: The action bar's offset toward its fully hidden state in pixels.
|
setHideOnContentScrollEnabled
void setHideOnContentScrollEnabled (boolean hideOnContentScroll)
Enable hiding the action bar on content scroll.
If enabled, the action bar will scroll out of sight along with a
nested scrolling child view's content.
The action bar must be in overlay mode
to enable hiding on content scroll.
When partially scrolled off screen the action bar is considered
hidden. A call to show will cause it to return to full view.
| Parameters | |
|---|---|
hideOnContentScroll |
boolean: true to enable hiding on content scroll.
|
setHomeActionContentDescription
void setHomeActionContentDescription (CharSequence description)
Set an alternate description for the Home/Up action, when enabled.
This description is commonly used for accessibility/screen readers when
the Home action is enabled. (See setDisplayHomeAsUpEnabled(boolean).)
Examples of this are, "Navigate Home" or "Navigate Up" depending on the
DISPLAY_HOME_AS_UP display option. If you have changed the home-as-up
indicator using setHomeAsUpIndicator(int) to indicate more specific
functionality such as a sliding drawer, you should also set this to accurately
describe the action.
Setting this to null will use the system default description.
| Parameters | |
|---|---|
description |
CharSequence: New description for the Home action when enabled |
setHomeActionContentDescription
void setHomeActionContentDescription (int resId)
Set an alternate description for the Home/Up action, when enabled.
This description is commonly used for accessibility/screen readers when
the Home action is enabled. (See setDisplayHomeAsUpEnabled(boolean).)
Examples of this are, "Navigate Home" or "Navigate Up" depending on the
DISPLAY_HOME_AS_UP display option. If you have changed the home-as-up
indicator using setHomeAsUpIndicator(int) to indicate more specific
functionality such as a sliding drawer, you should also set this to accurately
describe the action.
Setting this to 0 will use the system default description.
| Parameters | |
|---|---|
resId |
int: Resource ID of a string to use as the new description
for the Home action when enabled |
setHomeAsUpIndicator
void setHomeAsUpIndicator (int resId)
Set an alternate drawable to display next to the icon/logo/title
when DISPLAY_HOME_AS_UP is enabled. This can be useful if you are using
this mode to display an alternate selection for up navigation, such as a sliding drawer.
If you pass 0 to this method, the default drawable from the theme
will be used.
If you implement alternate or intermediate behavior around Up, you should also
call setHomeActionContentDescription()
to provide a correct description of the action for accessibility support.
| Parameters | |
|---|---|
resId |
int: Resource ID of a drawable to use for the up indicator, or null
to use the theme's default |
setHomeAsUpIndicator
void setHomeAsUpIndicator (Drawable indicator)
Set an alternate drawable to display next to the icon/logo/title
when DISPLAY_HOME_AS_UP is enabled. This can be useful if you are using
this mode to display an alternate selection for up navigation, such as a sliding drawer.
If you pass null to this method, the default drawable from the theme
will be used.
If you implement alternate or intermediate behavior around Up, you should also
call setHomeActionContentDescription()
to provide a correct description of the action for accessibility support.
| Parameters | |
|---|---|
indicator |
Drawable: A drawable to use for the up indicator, or null to use the theme's default |
setHomeButtonEnabled
void setHomeButtonEnabled (boolean enabled)
Enable or disable the "home" button in the corner of the action bar. (Note that this is the application home/up affordance on the action bar, not the system wide home button.)
This defaults to true for packages targeting < API 14. For packages targeting API 14 or greater, the application should call this method to enable interaction with the home/up affordance.
Setting the DISPLAY_HOME_AS_UP display option will automatically enable
the home button.
| Parameters | |
|---|---|
enabled |
boolean: true to enable the home button, false to disable the home button.
|
setIcon
void setIcon (Drawable icon)
Set the icon to display in the 'home' section of the action bar.
The action bar will use an icon specified by its style or the
activity icon by default.
Whether the home section shows an icon or logo is controlled
by the display option DISPLAY_USE_LOGO.
| Parameters | |
|---|---|
icon |
Drawable: Drawable to show as an icon. |
setIcon
void setIcon (int resId)
Set the icon to display in the 'home' section of the action bar.
The action bar will use an icon specified by its style or the
activity icon by default.
Whether the home section shows an icon or logo is controlled
by the display option DISPLAY_USE_LOGO.
| Parameters | |
|---|---|
resId |
int: Resource ID of a drawable to show as an icon. |
setListNavigationCallbacks
void setListNavigationCallbacks (SpinnerAdapter adapter, ActionBar.OnNavigationListener callback)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Set the adapter and navigation callback for list navigation mode. The supplied adapter will provide views for the expanded list as well as the currently selected item. (These may be displayed differently.) The supplied OnNavigationListener will alert the application when the user changes the current list selection.
| Parameters | |
|---|---|
adapter |
SpinnerAdapter: An adapter that will provide views both to display
the current navigation selection and populate views
within the dropdown navigation menu. |
callback |
ActionBar.OnNavigationListener: An OnNavigationListener that will receive events when the user
selects a navigation item. |
setLogo
void setLogo (int resId)
Set the logo to display in the 'home' section of the action bar.
The action bar will use a logo specified by its style or the
activity logo by default.
Whether the home section shows an icon or logo is controlled
by the display option DISPLAY_USE_LOGO.
| Parameters | |
|---|---|
resId |
int: Resource ID of a drawable to show as a logo. |
setLogo
void setLogo (Drawable logo)
Set the logo to display in the 'home' section of the action bar.
The action bar will use a logo specified by its style or the
activity logo by default.
Whether the home section shows an icon or logo is controlled
by the display option DISPLAY_USE_LOGO.
| Parameters | |
|---|---|
logo |
Drawable: Drawable to show as a logo. |
setNavigationMode
void setNavigationMode (int mode)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Set the current navigation mode.
| Parameters | |
|---|---|
mode |
int: The new mode to set. |
setSelectedNavigationItem
void setSelectedNavigationItem (int position)
This method was deprecated
in API level 24.1.0.
Action bar navigation modes are deprecated and not supported by inline
toolbar action bars. Consider using other
common
navigation patterns instead.
Set the selected navigation item in list or tabbed navigation modes.
| Parameters | |
|---|---|
position |
int: Position of the item to select. |
setSplitBackgroundDrawable
void setSplitBackgroundDrawable (Drawable d)
Set the ActionBar's split background. This will appear in the split action bar containing menu-provided action buttons on some devices and configurations.
You can enable split action bar with uiOptions
| Parameters | |
|---|---|
d |
Drawable: Background drawable for the split bar
|
setStackedBackgroundDrawable
void setStackedBackgroundDrawable (Drawable d)
Set the ActionBar's stacked background. This will appear in the second row/stacked bar on some devices and configurations.
| Parameters | |
|---|---|
d |
Drawable: Background drawable for the stacked row
|
setSubtitle
void setSubtitle (CharSequence subtitle)
Set the action bar's subtitle. This will only be displayed if
DISPLAY_SHOW_TITLE is set. Set to null to disable the
subtitle entirely.
| Parameters | |
|---|---|
subtitle |
CharSequence: Subtitle to set |
setSubtitle
void setSubtitle (int resId)
Set the action bar's subtitle. This will only be displayed if
DISPLAY_SHOW_TITLE is set.
| Parameters | |
|---|---|
resId |
int: Resource ID of subtitle string to set |
setTitle
void setTitle (CharSequence title)
Set the action bar's title. This will only be displayed if
DISPLAY_SHOW_TITLE is set.
| Parameters | |
|---|---|
title |
CharSequence: Title to set |
See also:
setTitle
void setTitle (int resId)
Set the action bar's title. This will only be displayed if
DISPLAY_SHOW_TITLE is set.
| Parameters | |
|---|---|
resId |
int: Resource ID of title string to set |
show
void show ()
Show the ActionBar if it is not currently showing.
If the window hosting the ActionBar does not have the feature
FEATURE_ACTION_BAR_OVERLAY it will resize application
content to fit the new space available.
If you are hiding the ActionBar through
View.SYSTEM_UI_FLAG_FULLSCREEN,
you should not call this function directly.
Interfaces
Classes
- ActionBar
- ActionBar.LayoutParams
- ActionBar.Tab
- ActionBarDrawerToggle
- AlertDialog
- AlertDialog.Builder
- AppCompatActivity
- AppCompatDelegate
- AppCompatDialog
- AppCompatDialogFragment
- AppCompatViewInflater
- MediaRouteActionProvider
- MediaRouteButton
- MediaRouteChooserDialog
- MediaRouteChooserDialogFragment
- MediaRouteControllerDialog
- MediaRouteControllerDialogFragment
- MediaRouteDialogFactory
- MediaRouteDiscoveryFragment
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Last updated 2024-04-11 UTC.