public
class
AccessibilityNodeInfoCompat
extends Object
java.lang.Object | |
↳ | android.support.v4.view.accessibility.AccessibilityNodeInfoCompat |
Helper for accessing AccessibilityNodeInfo
introduced after API level 4 in a backwards compatible fashion.
Nested classes | |
---|---|
class |
AccessibilityNodeInfoCompat.AccessibilityActionCompat
|
class |
AccessibilityNodeInfoCompat.CollectionInfoCompat
|
class |
AccessibilityNodeInfoCompat.CollectionItemInfoCompat
|
class |
AccessibilityNodeInfoCompat.RangeInfoCompat
|
Constants | |
---|---|
int |
ACTION_ACCESSIBILITY_FOCUS
Action that gives accessibility focus to the node. |
String |
ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN
Argument for whether when moving at granularity to extend the selection or to move it otherwise. |
String |
ACTION_ARGUMENT_HTML_ELEMENT_STRING
Argument for which HTML element to get moving to the next/previous HTML element. |
String |
ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT
Argument for which movement granularity to be used when traversing the node text. |
String |
ACTION_ARGUMENT_SELECTION_END_INT
Argument for specifying the selection end. |
String |
ACTION_ARGUMENT_SELECTION_START_INT
Argument for specifying the selection start. |
String |
ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE
Argument for specifying the text content to set
Type: CharSequence |
int |
ACTION_CLEAR_ACCESSIBILITY_FOCUS
Action that clears accessibility focus of the node. |
int |
ACTION_CLEAR_FOCUS
Action that unfocuses the node. |
int |
ACTION_CLEAR_SELECTION
Action that unselects the node. |
int |
ACTION_CLICK
Action that clicks on the node info. |
int |
ACTION_COLLAPSE
Action to collapse an expandable node. |
int |
ACTION_COPY
Action to copy the current selection to the clipboard. |
int |
ACTION_CUT
Action to cut the current selection and place it to the clipboard. |
int |
ACTION_DISMISS
Action to dismiss a dismissable node. |
int |
ACTION_EXPAND
Action to expand an expandable node. |
int |
ACTION_FOCUS
Action that focuses the node. |
int |
ACTION_LONG_CLICK
Action that long clicks on the node. |
int |
ACTION_NEXT_AT_MOVEMENT_GRANULARITY
Action that requests to go to the next entity in this node's text at a given movement granularity. |
int |
ACTION_NEXT_HTML_ELEMENT
Action to move to the next HTML element of a given type. |
int |
ACTION_PASTE
Action to paste the current clipboard content. |
int |
ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY
Action that requests to go to the previous entity in this node's text at a given movement granularity. |
int |
ACTION_PREVIOUS_HTML_ELEMENT
Action to move to the previous HTML element of a given type. |
int |
ACTION_SCROLL_BACKWARD
Action to scroll the node content backward. |
int |
ACTION_SCROLL_FORWARD
Action to scroll the node content forward. |
int |
ACTION_SELECT
Action that selects the node. |
int |
ACTION_SET_SELECTION
Action to set the selection. |
int |
ACTION_SET_TEXT
Action that sets the text of the node. |
int |
FOCUS_ACCESSIBILITY
The accessibility focus. |
int |
FOCUS_INPUT
The input focus. |
int |
MOVEMENT_GRANULARITY_CHARACTER
Movement granularity bit for traversing the text of a node by character. |
int |
MOVEMENT_GRANULARITY_LINE
Movement granularity bit for traversing the text of a node by line. |
int |
MOVEMENT_GRANULARITY_PAGE
Movement granularity bit for traversing the text of a node by page. |
int |
MOVEMENT_GRANULARITY_PARAGRAPH
Movement granularity bit for traversing the text of a node by paragraph. |
int |
MOVEMENT_GRANULARITY_WORD
Movement granularity bit for traversing the text of a node by word. |
Public constructors | |
---|---|
AccessibilityNodeInfoCompat(Object info)
Creates a new instance wrapping an
|
Public methods | |
---|---|
void
|
addAction(int action)
Adds an action that can be performed on the node. |
void
|
addAction(AccessibilityNodeInfoCompat.AccessibilityActionCompat action)
Adds an action that can be performed on the node. |
void
|
addChild(View root, int virtualDescendantId)
Adds a virtual child which is a descendant of the given |
void
|
addChild(View child)
Adds a child. |
boolean
|
canOpenPopup()
Gets if this node opens a popup or a dialog. |
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one. |
List<AccessibilityNodeInfoCompat>
|
findAccessibilityNodeInfosByText(String text)
Finds |
List<AccessibilityNodeInfoCompat>
|
findAccessibilityNodeInfosByViewId(String viewId)
Finds |
AccessibilityNodeInfoCompat
|
findFocus(int focus)
Find the view that has the specified focus type. |
AccessibilityNodeInfoCompat
|
focusSearch(int direction)
Searches for the nearest view in the specified direction that can take input focus. |
List<AccessibilityNodeInfoCompat.AccessibilityActionCompat>
|
getActionList()
Gets the actions that can be performed on the node. |
int
|
getActions()
Gets the actions that can be performed on the node. |
void
|
getBoundsInParent(Rect outBounds)
Gets the node bounds in parent coordinates. |
void
|
getBoundsInScreen(Rect outBounds)
Gets the node bounds in screen coordinates. |
AccessibilityNodeInfoCompat
|
getChild(int index)
Get the child at given index. |
int
|
getChildCount()
Gets the number of children. |
CharSequence
|
getClassName()
Gets the class this node comes from. |
AccessibilityNodeInfoCompat.CollectionInfoCompat
|
getCollectionInfo()
Gets the collection info if the node is a collection. |
AccessibilityNodeInfoCompat.CollectionItemInfoCompat
|
getCollectionItemInfo()
Gets the collection item info if the node is a collection item. |
CharSequence
|
getContentDescription()
Gets the content description of this node. |
int
|
getDrawingOrder()
Get the drawing order of the view corresponding it this node. |
CharSequence
|
getError()
Gets the error text of this node. |
Bundle
|
getExtras()
Gets an optional bundle with extra data. |
Object
|
getInfo()
|
int
|
getInputType()
Gets the input type of the source as defined by |
AccessibilityNodeInfoCompat
|
getLabelFor()
Gets the node info for which the view represented by this info serves as a label for accessibility purposes. |
AccessibilityNodeInfoCompat
|
getLabeledBy()
Gets the node info which serves as the label of the view represented by this info for accessibility purposes. |
int
|
getLiveRegion()
Gets the node's live region mode. |
int
|
getMaxTextLength()
Returns the maximum text length for this node. |
int
|
getMovementGranularities()
Gets the movement granularities for traversing the text of this node. |
CharSequence
|
getPackageName()
Gets the package this node comes from. |
AccessibilityNodeInfoCompat
|
getParent()
Gets the parent. |
AccessibilityNodeInfoCompat.RangeInfoCompat
|
getRangeInfo()
Gets the range info if this node is a range. |
CharSequence
|
getRoleDescription()
Gets the custom role description. |
CharSequence
|
getText()
Gets the text of this node. |
int
|
getTextSelectionEnd()
Gets the text selection end. |
int
|
getTextSelectionStart()
Gets the text selection start. |
AccessibilityNodeInfoCompat
|
getTraversalAfter()
Gets the node after which this one is visited in accessibility traversal. |
AccessibilityNodeInfoCompat
|
getTraversalBefore()
Gets the node before which this one is visited during traversal. |
String
|
getViewIdResourceName()
Gets the fully qualified resource name of the source view's id. |
AccessibilityWindowInfoCompat
|
getWindow()
Gets the window to which this node belongs. |
int
|
getWindowId()
Gets the id of the window from which the info comes from. |
int
|
hashCode()
Returns a hash code value for the object. |
boolean
|
isAccessibilityFocused()
Gets whether this node is accessibility focused. |
boolean
|
isCheckable()
Gets whether this node is checkable. |
boolean
|
isChecked()
Gets whether this node is checked. |
boolean
|
isClickable()
Gets whether this node is clickable. |
boolean
|
isContentInvalid()
Gets if the content of this node is invalid. |
boolean
|
isDismissable()
Gets if the node can be dismissed. |
boolean
|
isEditable()
Gets if the node is editable. |
boolean
|
isEnabled()
Gets whether this node is enabled. |
boolean
|
isFocusable()
Gets whether this node is focusable. |
boolean
|
isFocused()
Gets whether this node is focused. |
boolean
|
isImportantForAccessibility()
Returns whether the node originates from a view considered important for accessibility. |
boolean
|
isLongClickable()
Gets whether this node is long clickable. |
boolean
|
isMultiLine()
Gets if the node is a multi line editable text. |
boolean
|
isPassword()
Gets whether this node is a password. |
boolean
|
isScrollable()
Gets if the node is scrollable. |
boolean
|
isSelected()
Gets whether this node is selected. |
boolean
|
isVisibleToUser()
Sets whether this node is visible to the user. |
static
AccessibilityNodeInfoCompat
|
obtain(View root, int virtualDescendantId)
Returns a cached instance if such is available otherwise a new one and sets the source. |
static
AccessibilityNodeInfoCompat
|
obtain(AccessibilityNodeInfoCompat info)
Returns a cached instance if such is available or a new one is create. |
static
AccessibilityNodeInfoCompat
|
obtain()
Returns a cached instance if such is available otherwise a new one. |
static
AccessibilityNodeInfoCompat
|
obtain(View source)
Returns a cached instance if such is available otherwise a new one and sets the source. |
boolean
|
performAction(int action, Bundle arguments)
Performs an action on the node. |
boolean
|
performAction(int action)
Performs an action on the node. |
void
|
recycle()
Return an instance back to be reused. |
boolean
|
refresh()
Refreshes this info with the latest state of the view it represents. |
boolean
|
removeAction(AccessibilityNodeInfoCompat.AccessibilityActionCompat action)
Removes an action that can be performed on the node. |
boolean
|
removeChild(View root, int virtualDescendantId)
Removes a virtual child which is a descendant of the given
|
boolean
|
removeChild(View child)
Removes a child. |
void
|
setAccessibilityFocused(boolean focused)
Sets whether this node is accessibility focused. |
void
|
setBoundsInParent(Rect bounds)
Sets the node bounds in parent coordinates. |
void
|
setBoundsInScreen(Rect bounds)
Sets the node bounds in screen coordinates. |
void
|
setCanOpenPopup(boolean opensPopup)
Sets if this node opens a popup or a dialog. |
void
|
setCheckable(boolean checkable)
Sets whether this node is checkable. |
void
|
setChecked(boolean checked)
Sets whether this node is checked. |
void
|
setClassName(CharSequence className)
Sets the class this node comes from. |
void
|
setClickable(boolean clickable)
Sets whether this node is clickable. |
void
|
setCollectionInfo(Object collectionInfo)
|
void
|
setCollectionItemInfo(Object collectionItemInfo)
|
void
|
setContentDescription(CharSequence contentDescription)
Sets the content description of this node. |
void
|
setContentInvalid(boolean contentInvalid)
Sets if the content of this node is invalid. |
void
|
setDismissable(boolean dismissable)
Sets if the node can be dismissed. |
void
|
setDrawingOrder(int drawingOrderInParent)
Set the drawing order of the view corresponding it this node. |
void
|
setEditable(boolean editable)
Sets whether this node is editable. |
void
|
setEnabled(boolean enabled)
Sets whether this node is enabled. |
void
|
setError(CharSequence error)
Sets the error text of this node. |
void
|
setFocusable(boolean focusable)
Sets whether this node is focusable. |
void
|
setFocused(boolean focused)
Sets whether this node is focused. |
void
|
setImportantForAccessibility(boolean important)
Sets whether the node is considered important for accessibility. |
void
|
setInputType(int inputType)
Sets the input type of the source as defined by |
void
|
setLabelFor(View root, int virtualDescendantId)
Sets the view for which the view represented by this info serves as a label for accessibility purposes. |
void
|
setLabelFor(View labeled)
Sets the view for which the view represented by this info serves as a label for accessibility purposes. |
void
|
setLabeledBy(View label)
Sets the view which serves as the label of the view represented by this info for accessibility purposes. |
void
|
setLabeledBy(View root, int virtualDescendantId)
Sets the view which serves as the label of the view represented by this info for accessibility purposes. |
void
|
setLiveRegion(int mode)
Sets the node's live region mode. |
void
|
setLongClickable(boolean longClickable)
Sets whether this node is long clickable. |
void
|
setMaxTextLength(int max)
Sets the maximum text length, or -1 for no limit. |
void
|
setMovementGranularities(int granularities)
Sets the movement granularities for traversing the text of this node. |
void
|
setMultiLine(boolean multiLine)
Sets if the node is a multi line editable text. |
void
|
setPackageName(CharSequence packageName)
Sets the package this node comes from. |
void
|
setParent(View root, int virtualDescendantId)
Sets the parent to be a virtual descendant of the given |
void
|
setParent(View parent)
Sets the parent. |
void
|
setPassword(boolean password)
Sets whether this node is a password. |
void
|
setRangeInfo(AccessibilityNodeInfoCompat.RangeInfoCompat rangeInfo)
Sets the range info if this node is a range. |
void
|
setRoleDescription(CharSequence roleDescription)
Sets the custom role description. |
void
|
setScrollable(boolean scrollable)
Sets if the node is scrollable. |
void
|
setSelected(boolean selected)
Sets whether this node is selected. |
void
|
setSource(View source)
Sets the source. |
void
|
setSource(View root, int virtualDescendantId)
Sets the source to be a virtual descendant of the given |
void
|
setText(CharSequence text)
Sets the text of this node. |
void
|
setTextSelection(int start, int end)
Sets the text selection start and end. |
void
|
setTraversalAfter(View view)
Sets the view whose node is visited after this one in accessibility traversal. |
void
|
setTraversalAfter(View root, int virtualDescendantId)
Sets the node after which this one is visited in accessibility traversal. |
void
|
setTraversalBefore(View view)
Sets the view before whose node this one should be visited during traversal. |
void
|
setTraversalBefore(View root, int virtualDescendantId)
Sets the node before which this one is visited during traversal. |
void
|
setViewIdResourceName(String viewId)
Sets the fully qualified resource name of the source view's id. |
void
|
setVisibleToUser(boolean visibleToUser)
Sets whether this node is visible to the user. |
String
|
toString()
Returns a string representation of the object. |
Inherited methods | |
---|---|
From
class
java.lang.Object
|
int ACTION_ACCESSIBILITY_FOCUS
Action that gives accessibility focus to the node.
Constant Value: 64 (0x00000040)
String ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN
Argument for whether when moving at granularity to extend the selection or to move it otherwise.
Type: boolean
Actions: ACTION_NEXT_AT_MOVEMENT_GRANULARITY
,
ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY
Constant Value: "ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN"
String ACTION_ARGUMENT_HTML_ELEMENT_STRING
Argument for which HTML element to get moving to the next/previous HTML element.
Type: String
Actions: ACTION_NEXT_HTML_ELEMENT
,
ACTION_PREVIOUS_HTML_ELEMENT
Constant Value: "ACTION_ARGUMENT_HTML_ELEMENT_STRING"
String ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT
Argument for which movement granularity to be used when traversing the node text.
Type: int
Actions: ACTION_NEXT_AT_MOVEMENT_GRANULARITY
,
ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY
Constant Value: "ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT"
String ACTION_ARGUMENT_SELECTION_END_INT
Argument for specifying the selection end.
Type: int
Actions: ACTION_SET_SELECTION
See also:
Constant Value: "ACTION_ARGUMENT_SELECTION_END_INT"
String ACTION_ARGUMENT_SELECTION_START_INT
Argument for specifying the selection start.
Type: int
Actions: ACTION_SET_SELECTION
See also:
Constant Value: "ACTION_ARGUMENT_SELECTION_START_INT"
String ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE
Argument for specifying the text content to set
Type: CharSequence
Actions: ACTION_SET_TEXT
See also:
Constant Value: "ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE"
int ACTION_CLEAR_ACCESSIBILITY_FOCUS
Action that clears accessibility focus of the node.
Constant Value: 128 (0x00000080)
int ACTION_CLEAR_FOCUS
Action that unfocuses the node.
Constant Value: 2 (0x00000002)
int ACTION_CLEAR_SELECTION
Action that unselects the node.
Constant Value: 8 (0x00000008)
int ACTION_CLICK
Action that clicks on the node info.
Constant Value: 16 (0x00000010)
int ACTION_COLLAPSE
Action to collapse an expandable node.
Constant Value: 524288 (0x00080000)
int ACTION_COPY
Action to copy the current selection to the clipboard.
Constant Value: 16384 (0x00004000)
int ACTION_CUT
Action to cut the current selection and place it to the clipboard.
Constant Value: 65536 (0x00010000)
int ACTION_DISMISS
Action to dismiss a dismissable node.
Constant Value: 1048576 (0x00100000)
int ACTION_EXPAND
Action to expand an expandable node.
Constant Value: 262144 (0x00040000)
int ACTION_FOCUS
Action that focuses the node.
Constant Value: 1 (0x00000001)
int ACTION_LONG_CLICK
Action that long clicks on the node.
Constant Value: 32 (0x00000020)
int ACTION_NEXT_AT_MOVEMENT_GRANULARITY
Action that requests to go to the next entity in this node's text at a given movement granularity. For example, move to the next character, word, etc.
Arguments:
Bundle arguments = new Bundle();
arguments.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT,
AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER);
arguments.putBoolean(AccessibilityNodeInfo.ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN,
false);
info.performAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY, arguments);
ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT
<,
ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN
Example: Move to the previous character and do not extend selection.
See also:
Constant Value: 256 (0x00000100)
int ACTION_NEXT_HTML_ELEMENT
Action to move to the next HTML element of a given type. For example, move to the BUTTON, INPUT, TABLE, etc.
Arguments:
Bundle arguments = new Bundle();
arguments.putString(AccessibilityNodeInfo.ACTION_ARGUMENT_HTML_ELEMENT_STRING, "BUTTON");
info.performAction(AccessibilityNodeInfo.ACTION_NEXT_HTML_ELEMENT, arguments);
ACTION_ARGUMENT_HTML_ELEMENT_STRING
Example:
Constant Value: 1024 (0x00000400)
int ACTION_PASTE
Action to paste the current clipboard content.
Constant Value: 32768 (0x00008000)
int ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY
Action that requests to go to the previous entity in this node's text at a given movement granularity. For example, move to the next character, word, etc.
Arguments:
Bundle arguments = new Bundle();
arguments.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT,
AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER);
arguments.putBoolean(AccessibilityNodeInfo.ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN,
false);
info.performAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY,
arguments);
ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT
<,
ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN
Example: Move to the next character and do not extend selection.
See also:
Constant Value: 512 (0x00000200)
int ACTION_PREVIOUS_HTML_ELEMENT
Action to move to the previous HTML element of a given type. For example, move to the BUTTON, INPUT, TABLE, etc.
Arguments:
Bundle arguments = new Bundle();
arguments.putString(AccessibilityNodeInfo.ACTION_ARGUMENT_HTML_ELEMENT_STRING, "BUTTON");
info.performAction(AccessibilityNodeInfo.ACTION_PREVIOUS_HTML_ELEMENT, arguments);
ACTION_ARGUMENT_HTML_ELEMENT_STRING
Example:
Constant Value: 2048 (0x00000800)
int ACTION_SCROLL_BACKWARD
Action to scroll the node content backward.
Constant Value: 8192 (0x00002000)
int ACTION_SCROLL_FORWARD
Action to scroll the node content forward.
Constant Value: 4096 (0x00001000)
int ACTION_SELECT
Action that selects the node.
Constant Value: 4 (0x00000004)
int ACTION_SET_SELECTION
Action to set the selection. Performing this action with no arguments clears the selection.
Arguments:
Bundle arguments = new Bundle();
arguments.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, 1);
arguments.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, 2);
info.performAction(AccessibilityNodeInfo.ACTION_SET_SELECTION, arguments);
ACTION_ARGUMENT_SELECTION_START_INT
,
ACTION_ARGUMENT_SELECTION_END_INT
Example:
Constant Value: 131072 (0x00020000)
int ACTION_SET_TEXT
Action that sets the text of the node. Performing the action without argument, using
null
or empty CharSequence
will clear the text. This action will also put the
cursor at the end of text.
Arguments:
Bundle arguments = new Bundle();
arguments.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE,
"android");
info.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, arguments);
ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE
Example:
Constant Value: 2097152 (0x00200000)
int FOCUS_ACCESSIBILITY
The accessibility focus.
Constant Value: 2 (0x00000002)
int FOCUS_INPUT
The input focus.
Constant Value: 1 (0x00000001)
int MOVEMENT_GRANULARITY_CHARACTER
Movement granularity bit for traversing the text of a node by character.
Constant Value: 1 (0x00000001)
int MOVEMENT_GRANULARITY_LINE
Movement granularity bit for traversing the text of a node by line.
Constant Value: 4 (0x00000004)
int MOVEMENT_GRANULARITY_PAGE
Movement granularity bit for traversing the text of a node by page.
Constant Value: 16 (0x00000010)
int MOVEMENT_GRANULARITY_PARAGRAPH
Movement granularity bit for traversing the text of a node by paragraph.
Constant Value: 8 (0x00000008)
int MOVEMENT_GRANULARITY_WORD
Movement granularity bit for traversing the text of a node by word.
Constant Value: 2 (0x00000002)
AccessibilityNodeInfoCompat (Object info)
Creates a new instance wrapping an
AccessibilityNodeInfo
.
Parameters | |
---|---|
info |
Object :
The info.
|
void addAction (int action)
Adds an action that can be performed on the node.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
action |
int :
The action. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void addAction (AccessibilityNodeInfoCompat.AccessibilityActionCompat action)
Adds an action that can be performed on the node.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
action |
AccessibilityNodeInfoCompat.AccessibilityActionCompat :
The action. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void addChild (View root, int virtualDescendantId)
Adds a virtual child which is a descendant of the given root
.
If virtualDescendantId
is NO_ID
the root
is added as a child.
A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report them selves as a tree of virtual views, thus conveying their logical structure.
Parameters | |
---|---|
root |
View :
The root of the virtual subtree. |
virtualDescendantId |
int :
The id of the virtual child.
|
void addChild (View child)
Adds a child.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
child |
View :
The child. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
boolean canOpenPopup ()
Gets if this node opens a popup or a dialog.
Returns | |
---|---|
boolean |
If the the node opens a popup. |
boolean equals (Object obj)
Indicates whether some other object is "equal to" this one.
The equals
method implements an equivalence relation
on non-null object references:
x
, x.equals(x)
should return
true
.
x
and y
, x.equals(y)
should return true
if and only if
y.equals(x)
returns true
.
x
, y
, and z
, if
x.equals(y)
returns true
and
y.equals(z)
returns true
, then
x.equals(z)
should return true
.
x
and y
, multiple invocations of
x.equals(y)
consistently return true
or consistently return false
, provided no
information used in equals
comparisons on the
objects is modified.
x
,
x.equals(null)
should return false
.
The equals
method for class Object
implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x
and
y
, this method returns true
if and only
if x
and y
refer to the same object
(x == y
has the value true
).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode
method, which states
that equal objects must have equal hash codes.
Parameters | |
---|---|
obj |
Object :
the reference object with which to compare. |
Returns | |
---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
List<AccessibilityNodeInfoCompat> findAccessibilityNodeInfosByText (String text)
Finds AccessibilityNodeInfo
s by text. The match
is case insensitive containment. The search is relative to this info i.e. this
info is the root of the traversed tree.
Note: It is a client responsibility to recycle the
received info by calling recycle()
to avoid creating of multiple instances.
Parameters | |
---|---|
text |
String :
The searched text. |
Returns | |
---|---|
List<AccessibilityNodeInfoCompat> |
A list of node info. |
List<AccessibilityNodeInfoCompat> findAccessibilityNodeInfosByViewId (String viewId)
Finds AccessibilityNodeInfoCompat
s by the fully qualified view id's resource
name where a fully qualified id is of the from "package:id/id_resource_name".
For example, if the target application's package is "foo.bar" and the id
resource name is "baz", the fully qualified resource id is "foo.bar:id/baz".
Note: It is a client responsibility to recycle the
received info by calling recycle()
to avoid creating of multiple instances.
Note: The primary usage of this API is for UI test automation
and in order to report the fully qualified view id if an
AccessibilityNodeInfoCompat
the client has to set the
FLAG_REPORT_VIEW_IDS
flag when configuring his AccessibilityService
.
Parameters | |
---|---|
viewId |
String :
The fully qualified resource name of the view id to find. |
Returns | |
---|---|
List<AccessibilityNodeInfoCompat> |
A list of node info. |
AccessibilityNodeInfoCompat findFocus (int focus)
Find the view that has the specified focus type. The search starts from the view represented by this node info.
Parameters | |
---|---|
focus |
int :
The focus to find. One of FOCUS_INPUT or
FOCUS_ACCESSIBILITY . |
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The node info of the focused view or null. |
See also:
AccessibilityNodeInfoCompat focusSearch (int direction)
Searches for the nearest view in the specified direction that can take input focus.
Parameters | |
---|---|
direction |
int :
The direction. Can be one of:
FOCUS_DOWN ,
FOCUS_UP ,
FOCUS_LEFT ,
FOCUS_RIGHT ,
FOCUS_FORWARD ,
FOCUS_BACKWARD . |
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The node info for the view that can take accessibility focus. |
List<AccessibilityNodeInfoCompat.AccessibilityActionCompat> getActionList ()
Gets the actions that can be performed on the node.
Returns | |
---|---|
List<AccessibilityNodeInfoCompat.AccessibilityActionCompat> |
A list of AccessibilityActions. |
int getActions ()
Gets the actions that can be performed on the node.
Returns | |
---|---|
int |
The bit mask of with actions. |
void getBoundsInParent (Rect outBounds)
Gets the node bounds in parent coordinates.
Parameters | |
---|---|
outBounds |
Rect :
The output node bounds.
|
void getBoundsInScreen (Rect outBounds)
Gets the node bounds in screen coordinates.
Parameters | |
---|---|
outBounds |
Rect :
The output node bounds.
|
AccessibilityNodeInfoCompat getChild (int index)
Get the child at given index.
Note: It is a client responsibility to recycle the
received info by calling recycle()
to
avoid creating of multiple instances.
Parameters | |
---|---|
index |
int :
The child index. |
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The child node. |
Throws | |
---|---|
IllegalStateException |
If called outside of an AccessibilityService. |
int getChildCount ()
Gets the number of children.
Returns | |
---|---|
int |
The child count. |
CharSequence getClassName ()
Gets the class this node comes from.
Returns | |
---|---|
CharSequence |
The class name. |
AccessibilityNodeInfoCompat.CollectionInfoCompat getCollectionInfo ()
Gets the collection info if the node is a collection. A collection child is always a collection item.
Returns | |
---|---|
AccessibilityNodeInfoCompat.CollectionInfoCompat |
The collection info. |
AccessibilityNodeInfoCompat.CollectionItemInfoCompat getCollectionItemInfo ()
Gets the collection item info if the node is a collection item. A collection item is always a child of a collection.
Returns | |
---|---|
AccessibilityNodeInfoCompat.CollectionItemInfoCompat |
The collection item info. |
CharSequence getContentDescription ()
Gets the content description of this node.
Returns | |
---|---|
CharSequence |
The content description. |
int getDrawingOrder ()
Get the drawing order of the view corresponding it this node.
Drawing order is determined only within the node's parent, so this index is only relative to its siblings.
In some cases, the drawing order is essentially simultaneous, so it is possible for two siblings to return the same value. It is also possible that values will be skipped.
Returns | |
---|---|
int |
The drawing position of the view corresponding to this node relative to its siblings. |
CharSequence getError ()
Gets the error text of this node.
Returns | |
---|---|
CharSequence |
The error text. |
Bundle getExtras ()
Gets an optional bundle with extra data. The bundle
is lazily created and never null
.
Note: It is recommended to use the package name of your application as a prefix for the keys to avoid collisions which may confuse an accessibility service if the same key has different meaning when emitted from different applications.
Returns | |
---|---|
Bundle |
The bundle. |
int getInputType ()
Gets the input type of the source as defined by InputType
.
Returns | |
---|---|
int |
The input type. |
AccessibilityNodeInfoCompat getLabelFor ()
Gets the node info for which the view represented by this info serves as a label for accessibility purposes.
Note: It is a client responsibility to recycle the
received info by calling recycle()
to avoid creating of multiple instances.
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The labeled info. |
AccessibilityNodeInfoCompat getLabeledBy ()
Gets the node info which serves as the label of the view represented by this info for accessibility purposes.
Note: It is a client responsibility to recycle the
received info by calling recycle()
to avoid creating of multiple instances.
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The label. |
int getLiveRegion ()
Gets the node's live region mode.
A live region is a node that contains information that is important for
the user and when it changes the user should be notified. For example,
in a login screen with a TextView that displays an "incorrect password"
notification, that view should be marked as a live region with mode
ACCESSIBILITY_LIVE_REGION_POLITE
.
It is the responsibility of the accessibility service to monitor
TYPE_WINDOW_CONTENT_CHANGED
events
indicating changes to live region nodes and their children.
Returns | |
---|---|
int |
The live region mode, or
ACCESSIBILITY_LIVE_REGION_NONE if the view is
not a live region. |
See also:
int getMaxTextLength ()
Returns the maximum text length for this node.
Returns | |
---|---|
int |
The maximum text length, or -1 for no limit. |
See also:
int getMovementGranularities ()
Gets the movement granularities for traversing the text of this node.
Returns | |
---|---|
int |
The bit mask with granularities. |
CharSequence getPackageName ()
Gets the package this node comes from.
Returns | |
---|---|
CharSequence |
The package name. |
AccessibilityNodeInfoCompat getParent ()
Gets the parent.
Note: It is a client responsibility to recycle the
received info by calling recycle()
to avoid creating of multiple instances.
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The parent. |
AccessibilityNodeInfoCompat.RangeInfoCompat getRangeInfo ()
Gets the range info if this node is a range.
Returns | |
---|---|
AccessibilityNodeInfoCompat.RangeInfoCompat |
The range. |
CharSequence getRoleDescription ()
Gets the custom role description.
Returns | |
---|---|
CharSequence |
The role description. |
int getTextSelectionEnd ()
Gets the text selection end.
Returns | |
---|---|
int |
The text selection end if there is selection or -1. |
int getTextSelectionStart ()
Gets the text selection start.
Returns | |
---|---|
int |
The text selection start if there is selection or -1. |
AccessibilityNodeInfoCompat getTraversalAfter ()
Gets the node after which this one is visited in accessibility traversal. A screen-reader must visit the content of the other node before the content of this one.
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The succeeding node if such or null . |
AccessibilityNodeInfoCompat getTraversalBefore ()
Gets the node before which this one is visited during traversal. A screen-reader must visit the content of this node before the content of the one it precedes.
Returns | |
---|---|
AccessibilityNodeInfoCompat |
The succeeding node if such or null . |
String getViewIdResourceName ()
Gets the fully qualified resource name of the source view's id.
Note: The primary usage of this API is for UI test automation
and in order to report the source view id of an AccessibilityNodeInfoCompat
the client has to set the FLAG_REPORT_VIEW_IDS
flag when configuring his AccessibilityService
.
Returns | |
---|---|
String |
The id resource name. |
AccessibilityWindowInfoCompat getWindow ()
Gets the window to which this node belongs.
Returns | |
---|---|
AccessibilityWindowInfoCompat |
The window. |
See also:
int getWindowId ()
Gets the id of the window from which the info comes from.
Returns | |
---|---|
int |
The window id. |
int hashCode ()
Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
HashMap
.
The general contract of hashCode
is:
hashCode
method
must consistently return the same integer, provided no information
used in equals
comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.
equals(Object)
method, then calling the hashCode
method on each of
the two objects must produce the same integer result.
equals(java.lang.Object)
method, then calling the hashCode
method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by
class Object
does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
JavaTM programming language.)
Returns | |
---|---|
int |
a hash code value for this object. |
boolean isAccessibilityFocused ()
Gets whether this node is accessibility focused.
Returns | |
---|---|
boolean |
True if the node is accessibility focused. |
boolean isCheckable ()
Gets whether this node is checkable.
Returns | |
---|---|
boolean |
True if the node is checkable. |
boolean isChecked ()
Gets whether this node is checked.
Returns | |
---|---|
boolean |
True if the node is checked. |
boolean isClickable ()
Gets whether this node is clickable.
Returns | |
---|---|
boolean |
True if the node is clickable. |
boolean isContentInvalid ()
Gets if the content of this node is invalid. For example, a date is not well-formed.
Returns | |
---|---|
boolean |
If the node content is invalid. |
boolean isDismissable ()
Gets if the node can be dismissed.
Returns | |
---|---|
boolean |
If the node can be dismissed. |
boolean isEditable ()
Gets if the node is editable.
Returns | |
---|---|
boolean |
True if the node is editable, false otherwise. |
boolean isEnabled ()
Gets whether this node is enabled.
Returns | |
---|---|
boolean |
True if the node is enabled. |
boolean isFocusable ()
Gets whether this node is focusable.
Returns | |
---|---|
boolean |
True if the node is focusable. |
boolean isFocused ()
Gets whether this node is focused.
Returns | |
---|---|
boolean |
True if the node is focused. |
boolean isImportantForAccessibility ()
Returns whether the node originates from a view considered important for accessibility.
Returns | |
---|---|
boolean |
true if the node originates from a view considered important for
accessibility, false otherwise |
See also:
boolean isLongClickable ()
Gets whether this node is long clickable.
Returns | |
---|---|
boolean |
True if the node is long clickable. |
boolean isMultiLine ()
Gets if the node is a multi line editable text.
Returns | |
---|---|
boolean |
True if the node is multi line. |
boolean isPassword ()
Gets whether this node is a password.
Returns | |
---|---|
boolean |
True if the node is a password. |
boolean isScrollable ()
Gets if the node is scrollable.
Returns | |
---|---|
boolean |
True if the node is scrollable, false otherwise. |
boolean isSelected ()
Gets whether this node is selected.
Returns | |
---|---|
boolean |
True if the node is selected. |
boolean isVisibleToUser ()
Sets whether this node is visible to the user.
Returns | |
---|---|
boolean |
Whether the node is visible to the user. |
AccessibilityNodeInfoCompat obtain (View root, int virtualDescendantId)
Returns a cached instance if such is available otherwise a new one and sets the source.
Parameters | |
---|---|
root |
View :
The root of the virtual subtree. |
virtualDescendantId |
int :
The id of the virtual descendant. |
Returns | |
---|---|
AccessibilityNodeInfoCompat |
An instance. |
See also:
AccessibilityNodeInfoCompat obtain (AccessibilityNodeInfoCompat info)
Returns a cached instance if such is available or a new one is create.
The returned instance is initialized from the given info
.
Parameters | |
---|---|
info |
AccessibilityNodeInfoCompat :
The other info. |
Returns | |
---|---|
AccessibilityNodeInfoCompat |
An instance. |
AccessibilityNodeInfoCompat obtain ()
Returns a cached instance if such is available otherwise a new one.
Returns | |
---|---|
AccessibilityNodeInfoCompat |
An instance. |
AccessibilityNodeInfoCompat obtain (View source)
Returns a cached instance if such is available otherwise a new one and sets the source.
Parameters | |
---|---|
source |
View
|
Returns | |
---|---|
AccessibilityNodeInfoCompat |
An instance. |
See also:
boolean performAction (int action, Bundle arguments)
Performs an action on the node.
Note: An action can be performed only if the request is made
from an AccessibilityService
.
Parameters | |
---|---|
action |
int :
The action to perform. |
arguments |
Bundle :
A bundle with additional arguments. |
Returns | |
---|---|
boolean |
True if the action was performed. |
Throws | |
---|---|
IllegalStateException |
If called outside of an AccessibilityService. |
boolean performAction (int action)
Performs an action on the node.
Note: An action can be performed only if the request is
made from an AccessibilityService
.
Parameters | |
---|---|
action |
int :
The action to perform. |
Returns | |
---|---|
boolean |
True if the action was performed. |
Throws | |
---|---|
IllegalStateException |
If called outside of an AccessibilityService. |
void recycle ()
Return an instance back to be reused.
Note: You must not touch the object after calling this function.
Throws | |
---|---|
IllegalStateException |
If the info is already recycled. |
boolean refresh ()
Refreshes this info with the latest state of the view it represents.
Note: If this method returns false this info is obsolete since it represents a view that is no longer in the view tree and should be recycled.
Returns | |
---|---|
boolean |
Whether the refresh succeeded. |
boolean removeAction (AccessibilityNodeInfoCompat.AccessibilityActionCompat action)
Removes an action that can be performed on the node. If the action was not already added to the node, calling this method has no effect.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
action |
AccessibilityNodeInfoCompat.AccessibilityActionCompat :
The action to be removed. |
Returns | |
---|---|
boolean |
The action removed from the list of actions. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
boolean removeChild (View root, int virtualDescendantId)
Removes a virtual child which is a descendant of the given
root
. If the child was not previously added to the node,
calling this method has no effect.
Parameters | |
---|---|
root |
View :
The root of the virtual subtree. |
virtualDescendantId |
int :
The id of the virtual child. |
Returns | |
---|---|
boolean |
true if the child was present |
See also:
boolean removeChild (View child)
Removes a child. If the child was not previously added to the node, calling this method has no effect.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
child |
View :
The child. |
Returns | |
---|---|
boolean |
true if the child was present |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setAccessibilityFocused (boolean focused)
Sets whether this node is accessibility focused.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
focused |
boolean :
True if the node is accessibility focused. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setBoundsInParent (Rect bounds)
Sets the node bounds in parent coordinates.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
bounds |
Rect :
The node bounds. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setBoundsInScreen (Rect bounds)
Sets the node bounds in screen coordinates.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
bounds |
Rect :
The node bounds. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setCanOpenPopup (boolean opensPopup)
Sets if this node opens a popup or a dialog.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
opensPopup |
boolean :
If the the node opens a popup.
|
void setCheckable (boolean checkable)
Sets whether this node is checkable.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
checkable |
boolean :
True if the node is checkable. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setChecked (boolean checked)
Sets whether this node is checked.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
checked |
boolean :
True if the node is checked. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setClassName (CharSequence className)
Sets the class this node comes from.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
className |
CharSequence :
The class name. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setClickable (boolean clickable)
Sets whether this node is clickable.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
clickable |
boolean :
True if the node is clickable. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setCollectionItemInfo (Object collectionItemInfo)
Parameters | |
---|---|
collectionItemInfo |
Object
|
void setContentDescription (CharSequence contentDescription)
Sets the content description of this node.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
contentDescription |
CharSequence :
The content description. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setContentInvalid (boolean contentInvalid)
Sets if the content of this node is invalid. For example, a date is not well-formed.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
contentInvalid |
boolean :
If the node content is invalid.
|
void setDismissable (boolean dismissable)
Sets if the node can be dismissed.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
dismissable |
boolean :
If the node can be dismissed.
|
void setDrawingOrder (int drawingOrderInParent)
Set the drawing order of the view corresponding it this node.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setEditable (boolean editable)
Sets whether this node is editable.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
editable |
boolean :
True if the node is editable. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setEnabled (boolean enabled)
Sets whether this node is enabled.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
enabled |
boolean :
True if the node is enabled. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setError (CharSequence error)
Sets the error text of this node.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
error |
CharSequence :
The error text. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setFocusable (boolean focusable)
Sets whether this node is focusable.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
focusable |
boolean :
True if the node is focusable. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setFocused (boolean focused)
Sets whether this node is focused.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
focused |
boolean :
True if the node is focused. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setImportantForAccessibility (boolean important)
Sets whether the node is considered important for accessibility.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
important |
boolean :
true if the node is considered important for accessibility,
false otherwise
|
void setInputType (int inputType)
Sets the input type of the source as defined by InputType
.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an
AccessibilityService.
Parameters | |
---|---|
inputType |
int :
The input type. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setLabelFor (View root, int virtualDescendantId)
Sets the view for which the view represented by this info serves as a
label for accessibility purposes. If virtualDescendantId
is NO_ID
the root is set as the labeled.
A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report themselves as a tree of virtual views, thus conveying their logical structure.
Parameters | |
---|---|
root |
View :
The root whose virtual descendant serves as a label. |
virtualDescendantId |
int :
The id of the virtual descendant.
|
void setLabelFor (View labeled)
Sets the view for which the view represented by this info serves as a label for accessibility purposes.
Parameters | |
---|---|
labeled |
View :
The view for which this info serves as a label.
|
void setLabeledBy (View label)
Sets the view which serves as the label of the view represented by this info for accessibility purposes.
Parameters | |
---|---|
label |
View :
The view that labels this node's source.
|
void setLabeledBy (View root, int virtualDescendantId)
Sets the view which serves as the label of the view represented by
this info for accessibility purposes. If virtualDescendantId
is NO_ID
the root is set as the label.
A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report themselves as a tree of virtual views, thus conveying their logical structure.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
root |
View :
The root whose virtual descendant labels this node's source. |
virtualDescendantId |
int :
The id of the virtual descendant.
|
void setLiveRegion (int mode)
Sets the node's live region mode.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
mode |
int :
The live region mode, or
ACCESSIBILITY_LIVE_REGION_NONE if the view is
not a live region. |
See also:
void setLongClickable (boolean longClickable)
Sets whether this node is long clickable.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
longClickable |
boolean :
True if the node is long clickable. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setMaxTextLength (int max)
Sets the maximum text length, or -1 for no limit.
Typically used to indicate that an editable text field has a limit on the number of characters entered.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
max |
int :
The maximum text length. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
See also:
void setMovementGranularities (int granularities)
Sets the movement granularities for traversing the text of this node.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
granularities |
int :
The bit mask with granularities. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setMultiLine (boolean multiLine)
Sets if the node is a multi line editable text.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
multiLine |
boolean :
True if the node is multi line.
|
void setPackageName (CharSequence packageName)
Sets the package this node comes from.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
packageName |
CharSequence :
The package name. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setParent (View root, int virtualDescendantId)
Sets the parent to be a virtual descendant of the given root
.
If virtualDescendantId
equals to NO_ID
the root
is set as the parent.
A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report them selves as a tree of virtual views, thus conveying their logical structure.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
root |
View :
The root of the virtual subtree. |
virtualDescendantId |
int :
The id of the virtual descendant.
|
void setParent (View parent)
Sets the parent.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
parent |
View :
The parent. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setPassword (boolean password)
Sets whether this node is a password.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
password |
boolean :
True if the node is a password. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setRangeInfo (AccessibilityNodeInfoCompat.RangeInfoCompat rangeInfo)
Sets the range info if this node is a range.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
rangeInfo |
AccessibilityNodeInfoCompat.RangeInfoCompat :
The range info.
|
void setRoleDescription (CharSequence roleDescription)
Sets the custom role description.
The role description allows you to customize the name for the view's semantic
role. For example, if you create a custom subclass of View
to display a menu bar, you could assign it the role description of "menu bar".
Warning: For consistency with other applications, you should
not use the role description to force accessibility services to describe
standard views (such as buttons or checkboxes) using specific wording. For
example, you should not set a role description of "check box" or "tick box" for
a standard CheckBox
. Instead let accessibility services
decide what feedback to provide.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
roleDescription |
CharSequence :
The role description.
|
void setScrollable (boolean scrollable)
Sets if the node is scrollable.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
scrollable |
boolean :
True if the node is scrollable, false otherwise. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setSelected (boolean selected)
Sets whether this node is selected.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
selected |
boolean :
True if the node is selected. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setSource (View root, int virtualDescendantId)
Sets the source to be a virtual descendant of the given root
.
If virtualDescendantId
is NO_ID
the root
is set as the source.
A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report themselves as a tree of virtual views, thus conveying their logical structure.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
root |
View :
The root of the virtual subtree. |
virtualDescendantId |
int :
The id of the virtual descendant.
|
void setText (CharSequence text)
Sets the text of this node.
Note: Cannot be called from an
AccessibilityService
. This class is
made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
text |
CharSequence :
The text. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setTextSelection (int start, int end)
Sets the text selection start and end.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
start |
int :
The text selection start. |
end |
int :
The text selection end. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
void setTraversalAfter (View view)
Sets the view whose node is visited after this one in accessibility traversal. A screen-reader must visit the content of the other node before the content of this one.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
view |
View :
The previous view. |
See also:
void setTraversalAfter (View root, int virtualDescendantId)
Sets the node after which this one is visited in accessibility traversal.
A screen-reader must visit the content of the other node before the content
of this one. If virtualDescendantId
equals to NO_ID
the root is set as the predecessor.
A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report them selves as a tree of virtual views, thus conveying their logical structure.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
root |
View :
The root of the virtual subtree. |
virtualDescendantId |
int :
The id of the virtual descendant.
|
void setTraversalBefore (View view)
Sets the view before whose node this one should be visited during traversal. A screen-reader must visit the content of this node before the content of the one it precedes.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
view |
View :
The view providing the preceding node. |
See also:
void setTraversalBefore (View root, int virtualDescendantId)
Sets the node before which this one is visited during traversal. A screen-reader
must visit the content of this node before the content of the one it precedes.
The successor is a virtual descendant of the given root
. If
virtualDescendantId
equals to NO_ID
the root is set
as the successor.
A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report them selves as a tree of virtual views, thus conveying their logical structure.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
root |
View :
The root of the virtual subtree. |
virtualDescendantId |
int :
The id of the virtual descendant.
|
void setViewIdResourceName (String viewId)
Sets the fully qualified resource name of the source view's id.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
viewId |
String :
The id resource name.
|
void setVisibleToUser (boolean visibleToUser)
Sets whether this node is visible to the user.
Note: Cannot be called from an
AccessibilityService
.
This class is made immutable before being delivered to an AccessibilityService.
Parameters | |
---|---|
visibleToUser |
boolean :
Whether the node is visible to the user. |
Throws | |
---|---|
IllegalStateException |
If called from an AccessibilityService. |
String toString ()
Returns a string representation of the object. In general, the
toString
method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.
The toString
method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@
', and
the unsigned hexadecimal representation of the hash code of the
object. In other words, this method returns a string equal to the
value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
Returns | |
---|---|
String |
a string representation of the object. |