public
class
Toolbar
extends ViewGroup
java.lang.Object | |||
↳ | android.view.View | ||
↳ | android.view.ViewGroup | ||
↳ | android.support.v7.widget.Toolbar |
A standard toolbar for use within application content.
A Toolbar is a generalization of action bars
for use
within application layouts. While an action bar is traditionally part of an
Activity's
opaque window decor controlled by the framework,
a Toolbar may be placed at any arbitrary level of nesting within a view hierarchy.
An application may choose to designate a Toolbar as the action bar for an Activity
using the setSupportActionBar()
method.
Toolbar supports a more focused feature set than ActionBar. From start to end, a toolbar may contain a combination of the following optional elements:
Toolbar.LayoutParams
indicates a Gravity
value of
CENTER_HORIZONTAL
the view will attempt to center
within the available space remaining in the Toolbar after all other elements have been
measured.action menu
. The menu of actions will pin to the
end of the Toolbar offering a few
frequent, important or typical actions along with an optional overflow menu for
additional actions. Action buttons are vertically aligned within the Toolbar's
minimum height, if set.In modern Android UIs developers should lean more on a visually distinct color scheme for toolbars than on their application icon. The use of application icon plus title as a standard layout is discouraged on API 21 devices and newer.
Nested classes | |
---|---|
class |
Toolbar.LayoutParams
Layout information for child views of Toolbars. |
interface |
Toolbar.OnMenuItemClickListener
Interface responsible for receiving menu item click events if the items themselves do not have individual item click listeners. |
class |
Toolbar.SavedState
|
XML attributes | |
---|---|
android.support.v7.appcompat:buttonGravity |
|
android.support.v7.appcompat:collapseContentDescription |
Text to set as the content description for the collapse button. |
android.support.v7.appcompat:collapseIcon |
Icon drawable to use for the collapse button. |
android.support.v7.appcompat:contentInsetEnd |
Minimum inset for content views within a bar. |
android.support.v7.appcompat:contentInsetEndWithActions |
Minimum inset for content views within a bar when actions from a menu are present. |
android.support.v7.appcompat:contentInsetLeft |
Minimum inset for content views within a bar. |
android.support.v7.appcompat:contentInsetRight |
Minimum inset for content views within a bar. |
android.support.v7.appcompat:contentInsetStart |
Minimum inset for content views within a bar. |
android.support.v7.appcompat:contentInsetStartWithNavigation |
Minimum inset for content views within a bar when a navigation button is present, such as the Up button. |
android.support.v7.appcompat:logo |
Drawable to set as the logo that appears at the starting side of the Toolbar, just after the navigation button. |
android.support.v7.appcompat:logoDescription |
A content description string to describe the appearance of the associated logo image. |
android.support.v7.appcompat:maxButtonHeight |
|
android.support.v7.appcompat:navigationContentDescription |
Text to set as the content description for the navigation button located at the start of the toolbar. |
android.support.v7.appcompat:navigationIcon |
Icon drawable to use for the navigation button located at the start of the toolbar. |
android.support.v7.appcompat:popupTheme |
Reference to a theme that should be used to inflate popups shown by widgets in the toolbar. |
android.support.v7.appcompat:subtitle |
Specifies subtitle text used for navigationMode="normal"
May be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character; |
android.support.v7.appcompat:subtitleTextAppearance |
|
android.support.v7.appcompat:subtitleTextColor |
A color to apply to the subtitle string. |
android.support.v7.appcompat:title |
|
android.support.v7.appcompat:titleMargin |
Specifies extra space on the left, start, right and end sides of the toolbar's title. |
android.support.v7.appcompat:titleMarginBottom |
Specifies extra space on the bottom side of the toolbar's title. |
android.support.v7.appcompat:titleMarginEnd |
Specifies extra space on the end side of the toolbar's title. |
android.support.v7.appcompat:titleMarginStart |
Specifies extra space on the start side of the toolbar's title. |
android.support.v7.appcompat:titleMarginTop |
Specifies extra space on the top side of the toolbar's title. |
android.support.v7.appcompat:titleTextAppearance |
|
android.support.v7.appcompat:titleTextColor |
A color to apply to the title string. |
android:gravity |
Inherited XML attributes | |
---|---|
From
class
android.view.ViewGroup
| |
From
class
android.view.View
|
Inherited constants |
---|
From
class
android.view.ViewGroup
|
From
class
android.view.View
|
Inherited fields |
---|
From
class
android.view.View
|
Public constructors | |
---|---|
Toolbar(Context context)
|
|
Toolbar(Context context, AttributeSet attrs)
|
|
Toolbar(Context context, AttributeSet attrs, int defStyleAttr)
|
Public methods | |
---|---|
void
|
collapseActionView()
Collapse a currently expanded action view. |
void
|
dismissPopupMenus()
Dismiss all currently showing popup menus, including overflow or submenus. |
Toolbar.LayoutParams
|
generateLayoutParams(AttributeSet attrs)
Returns a new set of layout parameters based on the supplied attributes set. |
int
|
getContentInsetEnd()
Gets the ending content inset for this toolbar. |
int
|
getContentInsetEndWithActions()
Gets the end content inset to use when action buttons are present. |
int
|
getContentInsetLeft()
Gets the left content inset for this toolbar. |
int
|
getContentInsetRight()
Gets the right content inset for this toolbar. |
int
|
getContentInsetStart()
Gets the starting content inset for this toolbar. |
int
|
getContentInsetStartWithNavigation()
Gets the start content inset to use when a navigation button is present. |
int
|
getCurrentContentInsetEnd()
Gets the content inset that will be used on the ending side of the bar in the current toolbar configuration. |
int
|
getCurrentContentInsetLeft()
Gets the content inset that will be used on the left side of the bar in the current toolbar configuration. |
int
|
getCurrentContentInsetRight()
Gets the content inset that will be used on the right side of the bar in the current toolbar configuration. |
int
|
getCurrentContentInsetStart()
Gets the content inset that will be used on the starting side of the bar in the current toolbar configuration. |
Drawable
|
getLogo()
Return the current logo drawable. |
CharSequence
|
getLogoDescription()
Return the description of the toolbar's logo. |
Menu
|
getMenu()
Return the Menu shown in the toolbar. |
CharSequence
|
getNavigationContentDescription()
Retrieve the currently configured content description for the navigation button view. |
Drawable
|
getNavigationIcon()
Return the current drawable used as the navigation icon. |
Drawable
|
getOverflowIcon()
Return the current drawable used as the overflow icon. |
int
|
getPopupTheme()
|
CharSequence
|
getSubtitle()
Return the subtitle of this toolbar. |
CharSequence
|
getTitle()
Returns the title of this toolbar. |
int
|
getTitleMarginBottom()
|
int
|
getTitleMarginEnd()
|
int
|
getTitleMarginStart()
|
int
|
getTitleMarginTop()
|
boolean
|
hasExpandedActionView()
Check whether this Toolbar is currently hosting an expanded action view. |
boolean
|
hideOverflowMenu()
Hide the overflow items from the associated menu. |
void
|
inflateMenu(int resId)
Inflate a menu resource into this toolbar. |
boolean
|
isOverflowMenuShowing()
Check whether the overflow menu is currently showing. |
boolean
|
onHoverEvent(MotionEvent ev)
Implement this method to handle hover events. |
void
|
onRtlPropertiesChanged(int layoutDirection)
Called when any RTL property (layout direction or text direction or text alignment) has been changed. |
boolean
|
onTouchEvent(MotionEvent ev)
Implement this method to handle touch screen motion events. |
void
|
setContentInsetEndWithActions(int insetEndWithActions)
Sets the start content inset to use when action buttons are present. |
void
|
setContentInsetStartWithNavigation(int insetStartWithNavigation)
Sets the start content inset to use when a navigation button is present. |
void
|
setContentInsetsAbsolute(int contentInsetLeft, int contentInsetRight)
Sets the content insets for this toolbar. |
void
|
setContentInsetsRelative(int contentInsetStart, int contentInsetEnd)
Sets the content insets for this toolbar relative to layout direction. |
void
|
setLogo(int resId)
Set a logo drawable from a resource id. |
void
|
setLogo(Drawable drawable)
Set a logo drawable. |
void
|
setLogoDescription(int resId)
Set a description of the toolbar's logo. |
void
|
setLogoDescription(CharSequence description)
Set a description of the toolbar's logo. |
void
|
setNavigationContentDescription(CharSequence description)
Set a content description for the navigation button if one is present. |
void
|
setNavigationContentDescription(int resId)
Set a content description for the navigation button if one is present. |
void
|
setNavigationIcon(Drawable icon)
Set the icon to use for the toolbar's navigation button. |
void
|
setNavigationIcon(int resId)
Set the icon to use for the toolbar's navigation button. |
void
|
setNavigationOnClickListener(View.OnClickListener listener)
Set a listener to respond to navigation events. |
void
|
setOnMenuItemClickListener(Toolbar.OnMenuItemClickListener listener)
Set a listener to respond to menu item click events. |
void
|
setOverflowIcon(Drawable icon)
Set the icon to use for the overflow button. |
void
|
setPopupTheme(int resId)
Specifies the theme to use when inflating popup menus. |
void
|
setSubtitle(CharSequence subtitle)
Set the subtitle of this toolbar. |
void
|
setSubtitle(int resId)
Set the subtitle of this toolbar. |
void
|
setSubtitleTextAppearance(Context context, int resId)
Sets the text color, size, style, hint color, and highlight color from the specified TextAppearance resource. |
void
|
setSubtitleTextColor(int color)
Sets the text color of the subtitle, if present. |
void
|
setTitle(CharSequence title)
Set the title of this toolbar. |
void
|
setTitle(int resId)
Set the title of this toolbar. |
void
|
setTitleMargin(int start, int top, int end, int bottom)
Sets the title margin. |
void
|
setTitleMarginBottom(int margin)
Sets the bottom title margin in pixels. |
void
|
setTitleMarginEnd(int margin)
Sets the ending title margin in pixels. |
void
|
setTitleMarginStart(int margin)
Sets the starting title margin in pixels. |
void
|
setTitleMarginTop(int margin)
Sets the top title margin in pixels. |
void
|
setTitleTextAppearance(Context context, int resId)
Sets the text color, size, style, hint color, and highlight color from the specified TextAppearance resource. |
void
|
setTitleTextColor(int color)
Sets the text color of the title, if present. |
boolean
|
showOverflowMenu()
Show the overflow items from the associated menu. |
Protected methods | |
---|---|
boolean
|
checkLayoutParams(ViewGroup.LayoutParams p)
|
Toolbar.LayoutParams
|
generateDefaultLayoutParams()
Returns a set of default layout parameters. |
Toolbar.LayoutParams
|
generateLayoutParams(ViewGroup.LayoutParams p)
Returns a safe set of layout parameters based on the supplied layout params. |
void
|
onDetachedFromWindow()
This is called when the view is detached from a window. |
void
|
onLayout(boolean changed, int l, int t, int r, int b)
Called from layout when this view should assign a size and position to each of its children. |
void
|
onMeasure(int widthMeasureSpec, int heightMeasureSpec)
Measure the view and its content to determine the measured width and the measured height. |
void
|
onRestoreInstanceState(Parcelable state)
Hook allowing a view to re-apply a representation of its internal state that had previously
been generated by |
Parcelable
|
onSaveInstanceState()
Hook allowing a view to generate a representation of its internal state that can later be used to create a new instance with that same state. |
Inherited methods | |
---|---|
From
class
android.view.ViewGroup
| |
From
class
android.view.View
| |
From
class
java.lang.Object
| |
From
interface
android.view.ViewParent
| |
From
interface
android.view.ViewManager
| |
From
interface
android.graphics.drawable.Drawable.Callback
| |
From
interface
android.view.KeyEvent.Callback
| |
From
interface
android.view.accessibility.AccessibilityEventSource
|
Text to set as the content description for the collapse button.
May be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character;
Icon drawable to use for the collapse button.
May be a reference to another resource, in the form
"@[+][package:]type/name
" or a theme
attribute in the form
"?[package:]type/name
".
Minimum inset for content views within a bar. Navigation buttons and menu views are excepted. Only valid for some themes and configurations.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Minimum inset for content views within a bar when actions from a menu are present. Only valid for some themes and configurations.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Minimum inset for content views within a bar. Navigation buttons and menu views are excepted. Only valid for some themes and configurations.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Minimum inset for content views within a bar. Navigation buttons and menu views are excepted. Only valid for some themes and configurations.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Minimum inset for content views within a bar. Navigation buttons and menu views are excepted. Only valid for some themes and configurations.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Minimum inset for content views within a bar when a navigation button is present, such as the Up button. Only valid for some themes and configurations.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Drawable to set as the logo that appears at the starting side of the Toolbar, just after the navigation button.
May be a reference to another resource, in the form
"@[+][package:]type/name
" or a theme
attribute in the form
"?[package:]type/name
".
A content description string to describe the appearance of the associated logo image.
May be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character;
Text to set as the content description for the navigation button located at the start of the toolbar.
May be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character;
Related methods:
Icon drawable to use for the navigation button located at the start of the toolbar.
May be a reference to another resource, in the form
"@[+][package:]type/name
" or a theme
attribute in the form
"?[package:]type/name
".
Related methods:
Reference to a theme that should be used to inflate popups shown by widgets in the toolbar.
May be a reference to another resource, in the form
"@[+][package:]type/name
" or a theme
attribute in the form
"?[package:]type/name
".
Specifies subtitle text used for navigationMode="normal"
May be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character;
A color to apply to the subtitle string.
May be a color value, in the form of "#rgb
",
"#argb
", "#rrggbb
#aarrggbb".
Specifies extra space on the left, start, right and end sides of the toolbar's title. Margin values should be positive.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Specifies extra space on the bottom side of the toolbar's title. If both this attribute and titleMargin are specified, then this attribute takes precedence. Margin values should be positive.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Specifies extra space on the end side of the toolbar's title. If both this attribute and titleMargin are specified, then this attribute takes precedence. Margin values should be positive.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Specifies extra space on the start side of the toolbar's title. If both this attribute and titleMargin are specified, then this attribute takes precedence. Margin values should be positive.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
Specifies extra space on the top side of the toolbar's title. If both this attribute and titleMargin are specified, then this attribute takes precedence. Margin values should be positive.
May be a dimension value, which is a floating point number appended with a
unit such as "14.5sp
".
Available units are: px (pixels), dp (density-independent pixels),
sp (scaled pixels based on preferred font size), in (inches), and
mm (millimeters).
Related methods:
A color to apply to the title string.
May be a color value, in the form of "#rgb
",
"#argb
", "#rrggbb
#aarrggbb".
Toolbar (Context context, AttributeSet attrs, int defStyleAttr)
Parameters | |
---|---|
context |
Context
|
attrs |
AttributeSet
|
defStyleAttr |
int
|
void collapseActionView ()
Collapse a currently expanded action view. If this Toolbar does not have an expanded action view this method has no effect.
An action view may be expanded either directly from the
MenuItem
it belongs to or by user action.
See also:
void dismissPopupMenus ()
Dismiss all currently showing popup menus, including overflow or submenus.
Toolbar.LayoutParams generateLayoutParams (AttributeSet attrs)
Returns a new set of layout parameters based on the supplied attributes set.
Parameters | |
---|---|
attrs |
AttributeSet :
the attributes to build the layout parameters from |
Returns | |
---|---|
Toolbar.LayoutParams |
an instance of ViewGroup.LayoutParams or one
of its descendants
|
int getContentInsetEnd ()
Gets the ending content inset for this toolbar.
The content inset affects the valid area for Toolbar content other than the navigation button and menu. Insets define the minimum margin for these components and can be used to effectively align Toolbar content along well-known gridlines.
Related XML Attributes:
Returns | |
---|---|
int |
The ending content inset for this toolbar |
int getContentInsetEndWithActions ()
Gets the end content inset to use when action buttons are present.
Different content insets are often called for when additional buttons are present
in the toolbar, as well as at different toolbar sizes. The larger value of
getContentInsetEnd()
and this value will be used during layout.
Related XML Attributes:
Returns | |
---|---|
int |
the end content inset used when a menu has been set in pixels |
See also:
int getContentInsetLeft ()
Gets the left content inset for this toolbar.
The content inset affects the valid area for Toolbar content other than the navigation button and menu. Insets define the minimum margin for these components and can be used to effectively align Toolbar content along well-known gridlines.
Related XML Attributes:
Returns | |
---|---|
int |
The left content inset for this toolbar |
int getContentInsetRight ()
Gets the right content inset for this toolbar.
The content inset affects the valid area for Toolbar content other than the navigation button and menu. Insets define the minimum margin for these components and can be used to effectively align Toolbar content along well-known gridlines.
Related XML Attributes:
Returns | |
---|---|
int |
The right content inset for this toolbar |
int getContentInsetStart ()
Gets the starting content inset for this toolbar.
The content inset affects the valid area for Toolbar content other than the navigation button and menu. Insets define the minimum margin for these components and can be used to effectively align Toolbar content along well-known gridlines.
Related XML Attributes:
Returns | |
---|---|
int |
The starting content inset for this toolbar |
int getContentInsetStartWithNavigation ()
Gets the start content inset to use when a navigation button is present.
Different content insets are often called for when additional buttons are present
in the toolbar, as well as at different toolbar sizes. The larger value of
getContentInsetStart()
and this value will be used during layout.
Related XML Attributes:
Returns | |
---|---|
int |
the start content inset used when a navigation icon has been set in pixels |
See also:
int getCurrentContentInsetEnd ()
Gets the content inset that will be used on the ending side of the bar in the current toolbar configuration.
Returns | |
---|---|
int |
the current content inset end in pixels |
See also:
int getCurrentContentInsetLeft ()
Gets the content inset that will be used on the left side of the bar in the current toolbar configuration.
Returns | |
---|---|
int |
the current content inset left in pixels |
int getCurrentContentInsetRight ()
Gets the content inset that will be used on the right side of the bar in the current toolbar configuration.
Returns | |
---|---|
int |
the current content inset right in pixels |
int getCurrentContentInsetStart ()
Gets the content inset that will be used on the starting side of the bar in the current toolbar configuration.
Returns | |
---|---|
int |
the current content inset start in pixels |
See also:
Drawable getLogo ()
Return the current logo drawable.
Returns | |
---|---|
Drawable |
The current logo drawable |
CharSequence getLogoDescription ()
Return the description of the toolbar's logo.
Returns | |
---|---|
CharSequence |
A description of the logo |
Menu getMenu ()
Return the Menu shown in the toolbar.
Applications that wish to populate the toolbar's menu can do so from here. To use
an XML menu resource, use inflateMenu(int)
.
Returns | |
---|---|
Menu |
The toolbar's Menu |
CharSequence getNavigationContentDescription ()
Retrieve the currently configured content description for the navigation button view. This will be used to describe the navigation action to users through mechanisms such as screen readers or tooltips.
Related XML Attributes:
Returns | |
---|---|
CharSequence |
The navigation button's content description |
Drawable getNavigationIcon ()
Return the current drawable used as the navigation icon.
Related XML Attributes:
Returns | |
---|---|
Drawable |
The navigation icon drawable |
Drawable getOverflowIcon ()
Return the current drawable used as the overflow icon.
Returns | |
---|---|
Drawable |
The overflow icon drawable |
int getPopupTheme ()
Returns | |
---|---|
int |
resource identifier of the theme used to inflate popup menus, or 0 if menus are inflated against the toolbar theme |
See also:
CharSequence getSubtitle ()
Return the subtitle of this toolbar.
Returns | |
---|---|
CharSequence |
The current subtitle |
CharSequence getTitle ()
Returns the title of this toolbar.
Returns | |
---|---|
CharSequence |
The current title. |
int getTitleMarginBottom ()
Related XML Attributes:
Returns | |
---|---|
int |
the bottom title margin in pixels |
See also:
int getTitleMarginEnd ()
Related XML Attributes:
Returns | |
---|---|
int |
the ending title margin in pixels |
See also:
int getTitleMarginStart ()
Related XML Attributes:
Returns | |
---|---|
int |
the starting title margin in pixels |
See also:
int getTitleMarginTop ()
Related XML Attributes:
Returns | |
---|---|
int |
the top title margin in pixels |
See also:
boolean hasExpandedActionView ()
Check whether this Toolbar is currently hosting an expanded action view.
An action view may be expanded either directly from the
MenuItem
it belongs to or by user action. If the Toolbar
has an expanded action view it can be collapsed using the collapseActionView()
method.
Returns | |
---|---|
boolean |
true if the Toolbar has an expanded action view |
boolean hideOverflowMenu ()
Hide the overflow items from the associated menu.
Returns | |
---|---|
boolean |
true if the menu was able to be hidden, false otherwise |
void inflateMenu (int resId)
Inflate a menu resource into this toolbar.
Inflate an XML menu resource into this toolbar. Existing items in the menu will not be modified or removed.
Parameters | |
---|---|
resId |
int :
ID of a menu resource to inflate
|
boolean isOverflowMenuShowing ()
Check whether the overflow menu is currently showing. This may not reflect a pending show operation in progress.
Returns | |
---|---|
boolean |
true if the overflow menu is currently showing |
boolean onHoverEvent (MotionEvent ev)
Implement this method to handle hover events.
This method is called whenever a pointer is hovering into, over, or out of the
bounds of a view and the view is not currently being touched.
Hover events are represented as pointer events with action
ACTION_HOVER_ENTER
, ACTION_HOVER_MOVE
,
or ACTION_HOVER_EXIT
.
ACTION_HOVER_ENTER
when the pointer enters the bounds of the view.ACTION_HOVER_MOVE
when the pointer has already entered the bounds of the view and has moved.ACTION_HOVER_EXIT
when the pointer has exited the bounds of the view or when the pointer is
about to go down due to a button click, tap, or similar user action that
causes the view to be touched.The view should implement this method to return true to indicate that it is handling the hover event, such as by changing its drawable state.
The default implementation calls setHovered(boolean)
to update the hovered state
of the view when a hover enter or hover exit event is received, if the view
is enabled and is clickable. The default implementation also sends hover
accessibility events.
Parameters | |
---|---|
ev |
MotionEvent :
The motion event that describes the hover. |
Returns | |
---|---|
boolean |
True if the view handled the hover event. |
void onRtlPropertiesChanged (int layoutDirection)
Called when any RTL property (layout direction or text direction or text alignment) has been changed. Subclasses need to override this method to take care of cached information that depends on the resolved layout direction, or to inform child views that inherit their layout direction. The default implementation does nothing.
Parameters | |
---|---|
layoutDirection |
int :
the direction of the layout |
boolean onTouchEvent (MotionEvent ev)
Implement this method to handle touch screen motion events.
If this method is used to detect click actions, it is recommended that
the actions be performed by implementing and calling
performClick()
. This will ensure consistent system behavior,
including:
ACTION_CLICK
when
accessibility features are enabled
Parameters | |
---|---|
ev |
MotionEvent :
The motion event. |
Returns | |
---|---|
boolean |
True if the event was handled, false otherwise. |
void setContentInsetEndWithActions (int insetEndWithActions)
Sets the start content inset to use when action buttons are present.
Different content insets are often called for when additional buttons are present
in the toolbar, as well as at different toolbar sizes. The larger value of
getContentInsetEnd()
and this value will be used during layout.
Related XML Attributes:
Parameters | |
---|---|
insetEndWithActions |
int :
the inset to use when a menu has been set in pixels |
See also:
void setContentInsetStartWithNavigation (int insetStartWithNavigation)
Sets the start content inset to use when a navigation button is present.
Different content insets are often called for when additional buttons are present
in the toolbar, as well as at different toolbar sizes. The larger value of
getContentInsetStart()
and this value will be used during layout.
Related XML Attributes:
Parameters | |
---|---|
insetStartWithNavigation |
int :
the inset to use when a navigation icon has been set
in pixels |
See also:
void setContentInsetsAbsolute (int contentInsetLeft, int contentInsetRight)
Sets the content insets for this toolbar.
The content inset affects the valid area for Toolbar content other than the navigation button and menu. Insets define the minimum margin for these components and can be used to effectively align Toolbar content along well-known gridlines.
Related XML Attributes:
Parameters | |
---|---|
contentInsetLeft |
int :
Content inset for the toolbar's left edge |
contentInsetRight |
int :
Content inset for the toolbar's right edge |
void setContentInsetsRelative (int contentInsetStart, int contentInsetEnd)
Sets the content insets for this toolbar relative to layout direction.
The content inset affects the valid area for Toolbar content other than the navigation button and menu. Insets define the minimum margin for these components and can be used to effectively align Toolbar content along well-known gridlines.
Related XML Attributes:
Parameters | |
---|---|
contentInsetStart |
int :
Content inset for the toolbar starting edge |
contentInsetEnd |
int :
Content inset for the toolbar ending edge |
void setLogo (int resId)
Set a logo drawable from a resource id.
This drawable should generally take the place of title text. The logo cannot be
clicked. Apps using a logo should also supply a description using
setLogoDescription(int)
.
Parameters | |
---|---|
resId |
int :
ID of a drawable resource
|
void setLogo (Drawable drawable)
Set a logo drawable.
This drawable should generally take the place of title text. The logo cannot be
clicked. Apps using a logo should also supply a description using
setLogoDescription(int)
.
Parameters | |
---|---|
drawable |
Drawable :
Drawable to use as a logo
|
void setLogoDescription (int resId)
Set a description of the toolbar's logo.
This description will be used for accessibility or other similar descriptions of the UI.
Parameters | |
---|---|
resId |
int :
String resource id
|
void setLogoDescription (CharSequence description)
Set a description of the toolbar's logo.
This description will be used for accessibility or other similar descriptions of the UI.
Parameters | |
---|---|
description |
CharSequence :
Description to set
|
void setNavigationContentDescription (CharSequence description)
Set a content description for the navigation button if one is present. The content description will be read via screen readers or other accessibility systems to explain the action of the navigation button.
Related XML Attributes:
Parameters | |
---|---|
description |
CharSequence :
Content description to set, or null to
clear the content description |
void setNavigationContentDescription (int resId)
Set a content description for the navigation button if one is present. The content description will be read via screen readers or other accessibility systems to explain the action of the navigation button.
Related XML Attributes:
Parameters | |
---|---|
resId |
int :
Resource ID of a content description string to set, or 0 to
clear the description |
void setNavigationIcon (Drawable icon)
Set the icon to use for the toolbar's navigation button.
The navigation button appears at the start of the toolbar if present. Setting an icon will make the navigation button visible.
If you use a navigation icon you should also set a description for its action using
setNavigationContentDescription(int)
. This is used for accessibility and
tooltips.
Related XML Attributes:
Parameters | |
---|---|
icon |
Drawable :
Drawable to set, may be null to clear the icon |
void setNavigationIcon (int resId)
Set the icon to use for the toolbar's navigation button.
The navigation button appears at the start of the toolbar if present. Setting an icon will make the navigation button visible.
If you use a navigation icon you should also set a description for its action using
setNavigationContentDescription(int)
. This is used for accessibility and
tooltips.
Related XML Attributes:
Parameters | |
---|---|
resId |
int :
Resource ID of a drawable to set |
void setNavigationOnClickListener (View.OnClickListener listener)
Set a listener to respond to navigation events.
This listener will be called whenever the user clicks the navigation button at the start of the toolbar. An icon must be set for the navigation button to appear.
Parameters | |
---|---|
listener |
View.OnClickListener :
Listener to set |
void setOnMenuItemClickListener (Toolbar.OnMenuItemClickListener listener)
Set a listener to respond to menu item click events.
This listener will be invoked whenever a user selects a menu item from the action buttons presented at the end of the toolbar or the associated overflow.
Parameters | |
---|---|
listener |
Toolbar.OnMenuItemClickListener :
Listener to set
|
void setOverflowIcon (Drawable icon)
Set the icon to use for the overflow button.
Parameters | |
---|---|
icon |
Drawable :
Drawable to set, may be null to clear the icon
|
void setPopupTheme (int resId)
Specifies the theme to use when inflating popup menus. By default, uses the same theme as the toolbar itself.
Parameters | |
---|---|
resId |
int :
theme used to inflate popup menus |
See also:
void setSubtitle (CharSequence subtitle)
Set the subtitle of this toolbar.
Subtitles should express extended information about the current content.
Parameters | |
---|---|
subtitle |
CharSequence :
Subtitle to set
|
void setSubtitle (int resId)
Set the subtitle of this toolbar.
Subtitles should express extended information about the current content.
Parameters | |
---|---|
resId |
int :
String resource ID
|
void setSubtitleTextAppearance (Context context, int resId)
Sets the text color, size, style, hint color, and highlight color from the specified TextAppearance resource.
Parameters | |
---|---|
context |
Context
|
resId |
int
|
void setSubtitleTextColor (int color)
Sets the text color of the subtitle, if present.
Parameters | |
---|---|
color |
int :
The new text color in 0xAARRGGBB format
|
void setTitle (CharSequence title)
Set the title of this toolbar.
A title should be used as the anchor for a section of content. It should describe or name the content being viewed.
Parameters | |
---|---|
title |
CharSequence :
Title to set
|
void setTitle (int resId)
Set the title of this toolbar.
A title should be used as the anchor for a section of content. It should describe or name the content being viewed.
Parameters | |
---|---|
resId |
int :
Resource ID of a string to set as the title
|
void setTitleMargin (int start, int top, int end, int bottom)
Sets the title margin.
Related XML Attributes:
Parameters | |
---|---|
start |
int :
the starting title margin in pixels |
top |
int :
the top title margin in pixels |
end |
int :
the ending title margin in pixels |
bottom |
int :
the bottom title margin in pixels |
void setTitleMarginBottom (int margin)
Sets the bottom title margin in pixels.
Related XML Attributes:
Parameters | |
---|---|
margin |
int :
the bottom title margin in pixels |
See also:
void setTitleMarginEnd (int margin)
Sets the ending title margin in pixels.
Related XML Attributes:
Parameters | |
---|---|
margin |
int :
the ending title margin in pixels |
See also:
void setTitleMarginStart (int margin)
Sets the starting title margin in pixels.
Related XML Attributes:
Parameters | |
---|---|
margin |
int :
the starting title margin in pixels |
See also:
void setTitleMarginTop (int margin)
Sets the top title margin in pixels.
Related XML Attributes:
Parameters | |
---|---|
margin |
int :
the top title margin in pixels |
See also:
void setTitleTextAppearance (Context context, int resId)
Sets the text color, size, style, hint color, and highlight color from the specified TextAppearance resource.
Parameters | |
---|---|
context |
Context
|
resId |
int
|
void setTitleTextColor (int color)
Sets the text color of the title, if present.
Parameters | |
---|---|
color |
int :
The new text color in 0xAARRGGBB format
|
boolean showOverflowMenu ()
Show the overflow items from the associated menu.
Returns | |
---|---|
boolean |
true if the menu was able to be shown, false otherwise |
boolean checkLayoutParams (ViewGroup.LayoutParams p)
Parameters | |
---|---|
p |
ViewGroup.LayoutParams
|
Returns | |
---|---|
boolean |
Toolbar.LayoutParams generateDefaultLayoutParams ()
Returns a set of default layout parameters. These parameters are requested
when the View passed to addView(View)
has no layout parameters
already set. If null is returned, an exception is thrown from addView.
Returns | |
---|---|
Toolbar.LayoutParams |
a set of default layout parameters or null |
Toolbar.LayoutParams generateLayoutParams (ViewGroup.LayoutParams p)
Returns a safe set of layout parameters based on the supplied layout params.
When a ViewGroup is passed a View whose layout params do not pass the test of
checkLayoutParams(android.view.ViewGroup.LayoutParams)
, this method
is invoked. This method should return a new set of layout params suitable for
this ViewGroup, possibly by copying the appropriate attributes from the
specified set of layout params.
Parameters | |
---|---|
p |
ViewGroup.LayoutParams :
The layout parameters to convert into a suitable set of layout parameters
for this ViewGroup. |
Returns | |
---|---|
Toolbar.LayoutParams |
an instance of ViewGroup.LayoutParams or one
of its descendants
|
void onDetachedFromWindow ()
This is called when the view is detached from a window. At this point it no longer has a surface for drawing.
void onLayout (boolean changed, int l, int t, int r, int b)
Called from layout when this view should assign a size and position to each of its children. Derived classes with children should override this method and call layout on each of their children.
Parameters | |
---|---|
changed |
boolean :
This is a new size or position for this view |
l |
int :
Left position, relative to parent |
t |
int :
Top position, relative to parent |
r |
int :
Right position, relative to parent |
b |
int :
Bottom position, relative to parent
|
void onMeasure (int widthMeasureSpec, int heightMeasureSpec)
Measure the view and its content to determine the measured width and the
measured height. This method is invoked by measure(int, int)
and
should be overridden by subclasses to provide accurate and efficient
measurement of their contents.
CONTRACT: When overriding this method, you
must call setMeasuredDimension(int, int)
to store the
measured width and height of this view. Failure to do so will trigger an
IllegalStateException
, thrown by
measure(int, int)
. Calling the superclass'
onMeasure(int, int)
is a valid use.
The base class implementation of measure defaults to the background size,
unless a larger size is allowed by the MeasureSpec. Subclasses should
override onMeasure(int, int)
to provide better measurements of
their content.
If this method is overridden, it is the subclass's responsibility to make
sure the measured height and width are at least the view's minimum height
and width (getSuggestedMinimumHeight()
and
getSuggestedMinimumWidth()
).
Parameters | |
---|---|
widthMeasureSpec |
int :
horizontal space requirements as imposed by the parent.
The requirements are encoded with
View.MeasureSpec . |
heightMeasureSpec |
int :
vertical space requirements as imposed by the parent.
The requirements are encoded with
View.MeasureSpec . |
void onRestoreInstanceState (Parcelable state)
Hook allowing a view to re-apply a representation of its internal state that had previously
been generated by onSaveInstanceState()
. This function will never be called with a
null state.
Parameters | |
---|---|
state |
Parcelable :
The frozen state that had previously been returned by
onSaveInstanceState() . |
Parcelable onSaveInstanceState ()
Hook allowing a view to generate a representation of its internal state that can later be used to create a new instance with that same state. This state should only contain information that is not persistent or can not be reconstructed later. For example, you will never store your current position on screen because that will be computed again when a new instance of the view is placed in its view hierarchy.
Some examples of things you may store here: the current cursor position in a text view (but usually not the text itself since that is stored in a content provider or other persistent storage), the currently selected item in a list view.
Returns | |
---|---|
Parcelable |
Returns a Parcelable object containing the view's current dynamic state, or null if there is nothing interesting to save. The default implementation returns null. |