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Added in API level 14

AccessibilityNodeInfo

public class AccessibilityNodeInfo
extends Object implements Parcelable

java.lang.Object
↳	android.view.accessibility.AccessibilityNodeInfo

This class represents a node of the window content as well as actions that can be requested from its source. From the point of view of an AccessibilityService a window's content is presented as a tree of accessibility node infos, which may or may not map one-to-one to the view hierarchy. In other words, a custom view is free to report itself as a tree of accessibility node info.

Once an accessibility node info is delivered to an accessibility service it is made immutable and calling a state mutation method generates an error.

Please refer to AccessibilityService for details about how to obtain a handle to window content as a tree of accessibility node info as well as details about the security model.

Developer Guides

For more information about making applications accessible, read the Accessibility developer guide.

See also:

Summary

Nested classes
`class`	`AccessibilityNodeInfo.AccessibilityAction` A class defining an action that can be performed on an `AccessibilityNodeInfo`.
`class`	`AccessibilityNodeInfo.CollectionInfo` Class with information if a node is a collection.
`class`	`AccessibilityNodeInfo.CollectionItemInfo` Class with information if a node is a collection item.
`class`	`AccessibilityNodeInfo.RangeInfo` Class with information if a node is a range.

Constants
`int`	`ACTION_ACCESSIBILITY_FOCUS` Action that gives accessibility focus to the node.
`String`	`ACTION_ARGUMENT_COLUMN_INT` Argument for specifying the collection column to make visible on screen.
`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_PROGRESS_VALUE` Argument for specifying the progress value to set.
`String`	`ACTION_ARGUMENT_ROW_INT` Argument for specifying the collection row to make visible on screen.
`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.
`int`	`ACTION_CLEAR_ACCESSIBILITY_FOCUS` Action that clears accessibility focus of the node.
`int`	`ACTION_CLEAR_FOCUS` Action that clears input focus of the node.
`int`	`ACTION_CLEAR_SELECTION` Action that deselects 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 gives input focus to 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.

Inherited constants

From interface


    android.os.Parcelable

Fields
`public static final Creator<AccessibilityNodeInfo>`	`CREATOR`

Public methods
`void`	`addAction(int action)` This method was deprecated in API level 21. This has been deprecated for `addAction(AccessibilityAction)`
`void`	`addAction(AccessibilityNodeInfo.AccessibilityAction 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 `root`.
`void`	`addChild(View child)` Adds a child.
`boolean`	`canOpenPopup()` Gets if this node opens a popup or a dialog.
`int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`boolean`	`equals(Object object)` Indicates whether some other object is "equal to" this one.
`List<AccessibilityNodeInfo>`	`findAccessibilityNodeInfosByText(String text)` Finds `AccessibilityNodeInfo`s by text.
`List<AccessibilityNodeInfo>`	`findAccessibilityNodeInfosByViewId(String viewId)` Finds `AccessibilityNodeInfo`s by the fully qualified view id's resource name where a fully qualified id is of the from "package:id/id_resource_name".
`AccessibilityNodeInfo`	`findFocus(int focus)` Find the view that has the specified focus type.
`AccessibilityNodeInfo`	`focusSearch(int direction)` Searches for the nearest view in the specified direction that can take the input focus.
`List<AccessibilityNodeInfo.AccessibilityAction>`	`getActionList()` Gets the actions that can be performed on the node.
`int`	`getActions()` This method was deprecated in API level 21. Use `getActionList()`.
`void`	`getBoundsInParent(Rect outBounds)` Gets the node bounds in parent coordinates.
`void`	`getBoundsInScreen(Rect outBounds)` Gets the node bounds in screen coordinates.
`AccessibilityNodeInfo`	`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.
`AccessibilityNodeInfo.CollectionInfo`	`getCollectionInfo()` Gets the collection info if the node is a collection.
`AccessibilityNodeInfo.CollectionItemInfo`	`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.
`int`	`getInputType()` Gets the input type of the source as defined by `InputType`.
`AccessibilityNodeInfo`	`getLabelFor()` Gets the node info for which the view represented by this info serves as a label for accessibility purposes.
`AccessibilityNodeInfo`	`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.
`AccessibilityNodeInfo`	`getParent()` Gets the parent.
`AccessibilityNodeInfo.RangeInfo`	`getRangeInfo()` Gets the range info if this node is a range.
`CharSequence`	`getText()` Gets the text of this node.
`int`	`getTextSelectionEnd()` Gets the text selection end if text is selected.
`int`	`getTextSelectionStart()` Gets the text selection start or the cursor position.
`AccessibilityNodeInfo`	`getTraversalAfter()` Gets the node after which this one is visited in accessibility traversal.
`AccessibilityNodeInfo`	`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.
`AccessibilityWindowInfo`	`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`	`isContextClickable()` Gets whether this node is context clickable.
`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()` Gets whether this node is visible to the user.
`static AccessibilityNodeInfo`	`obtain(View root, int virtualDescendantId)` Returns a cached instance if such is available otherwise a new one and sets the source.
`static AccessibilityNodeInfo`	`obtain(AccessibilityNodeInfo info)` Returns a cached instance if such is available or a new one is create.
`static AccessibilityNodeInfo`	`obtain()` Returns a cached instance if such is available otherwise a new one.
`static AccessibilityNodeInfo`	`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(AccessibilityNodeInfo.AccessibilityAction action)` Removes an action that can be performed on the node.
`void`	`removeAction(int action)` This method was deprecated in API level 21. Use `removeAction(AccessibilityAction)`
`boolean`	`removeChild(View root, int virtualDescendantId)` Removes a virtual child which is a descendant of the given `root`.
`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(AccessibilityNodeInfo.CollectionInfo collectionInfo)` Sets the collection info if the node is a collection.
`void`	`setCollectionItemInfo(AccessibilityNodeInfo.CollectionItemInfo collectionItemInfo)` Sets the collection item info if the node is a collection item.
`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`	`setContextClickable(boolean contextClickable)` Sets whether this node is context clickable.
`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 `InputType`.
`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 `root`.
`void`	`setParent(View parent)` Sets the parent.
`void`	`setPassword(boolean password)` Sets whether this node is a password.
`void`	`setRangeInfo(AccessibilityNodeInfo.RangeInfo rangeInfo)` Sets the range info if this node is a range.
`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 `root`.
`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 viewIdResName)` 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.
`void`	`writeToParcel(Parcel parcel, int flags)` Flatten this object in to a Parcel. Note: After the instance is written to a parcel it is recycled.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


  
    android.os.Parcelable

Constants

ACTION_ACCESSIBILITY_FOCUS

Added in API level 16

int ACTION_ACCESSIBILITY_FOCUS

Action that gives accessibility focus to the node.

Constant Value: 64 (0x00000040)

ACTION_ARGUMENT_COLUMN_INT

Added in API level 23

String ACTION_ARGUMENT_COLUMN_INT

Argument for specifying the collection column to make visible on screen.

Type: int
Actions:

ACTION_SCROLL_TO_POSITION

See also:

ACTION_SCROLL_TO_POSITION

Constant Value: "android.view.accessibility.action.ARGUMENT_COLUMN_INT"

ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN

Added in API level 18

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:

See also:

Constant Value: "ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN"

ACTION_ARGUMENT_HTML_ELEMENT_STRING

Added in API level 16

String ACTION_ARGUMENT_HTML_ELEMENT_STRING

Argument for which HTML element to get moving to the next/previous HTML element.

Type: String
Actions:

See also:

Constant Value: "ACTION_ARGUMENT_HTML_ELEMENT_STRING"

ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT

Added in API level 16

String ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT

Argument for which movement granularity to be used when traversing the node text.

Type: int
Actions:

See also:

Constant Value: "ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT"

ACTION_ARGUMENT_PROGRESS_VALUE

Added in API level 24

String ACTION_ARGUMENT_PROGRESS_VALUE

Argument for specifying the progress value to set.

Type: float
Actions:

ACTION_SET_PROGRESS

See also:

ACTION_SET_PROGRESS

Constant Value: "android.view.accessibility.action.ARGUMENT_PROGRESS_VALUE"

ACTION_ARGUMENT_ROW_INT

Added in API level 23

String ACTION_ARGUMENT_ROW_INT

Argument for specifying the collection row to make visible on screen.

Type: int
Actions:

ACTION_SCROLL_TO_POSITION

See also:

ACTION_SCROLL_TO_POSITION

Constant Value: "android.view.accessibility.action.ARGUMENT_ROW_INT"

ACTION_ARGUMENT_SELECTION_END_INT

Added in API level 18

String ACTION_ARGUMENT_SELECTION_END_INT

Argument for specifying the selection end.

Type: int
Actions:

ACTION_SET_SELECTION

See also:

ACTION_SET_SELECTION

Constant Value: "ACTION_ARGUMENT_SELECTION_END_INT"

ACTION_ARGUMENT_SELECTION_START_INT

Added in API level 18

String ACTION_ARGUMENT_SELECTION_START_INT

Argument for specifying the selection start.

Type: int
Actions:

ACTION_SET_SELECTION

See also:

ACTION_SET_SELECTION

Constant Value: "ACTION_ARGUMENT_SELECTION_START_INT"

ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE

Added in API level 21

String ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE

Argument for specifying the text content to set.

Type: CharSequence
Actions:

ACTION_SET_TEXT

See also:

ACTION_SET_TEXT

Constant Value: "ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE"

ACTION_CLEAR_ACCESSIBILITY_FOCUS

Added in API level 16

int ACTION_CLEAR_ACCESSIBILITY_FOCUS

Action that clears accessibility focus of the node.

Constant Value: 128 (0x00000080)

ACTION_CLEAR_FOCUS

Added in API level 14

int ACTION_CLEAR_FOCUS

Action that clears input focus of the node.

Constant Value: 2 (0x00000002)

ACTION_CLEAR_SELECTION

Added in API level 14

int ACTION_CLEAR_SELECTION

Action that deselects the node.

Constant Value: 8 (0x00000008)

ACTION_CLICK

Added in API level 16

int ACTION_CLICK

Action that clicks on the node info. See ACTION_CLICK

Constant Value: 16 (0x00000010)

ACTION_COLLAPSE

Added in API level 19

int ACTION_COLLAPSE

Action to collapse an expandable node.

Constant Value: 524288 (0x00080000)

ACTION_COPY

Added in API level 18

int ACTION_COPY

Action to copy the current selection to the clipboard.

Constant Value: 16384 (0x00004000)

ACTION_CUT

Added in API level 18

int ACTION_CUT

Action to cut the current selection and place it to the clipboard.

Constant Value: 65536 (0x00010000)

ACTION_DISMISS

Added in API level 19

int ACTION_DISMISS

Action to dismiss a dismissable node.

Constant Value: 1048576 (0x00100000)

ACTION_EXPAND

Added in API level 19

int ACTION_EXPAND

Action to expand an expandable node.

Constant Value: 262144 (0x00040000)

ACTION_FOCUS

Added in API level 14

int ACTION_FOCUS

Action that gives input focus to the node.

Constant Value: 1 (0x00000001)

ACTION_LONG_CLICK

Added in API level 16

int ACTION_LONG_CLICK

Action that long clicks on the node.

Constant Value: 32 (0x00000020)

ACTION_NEXT_AT_MOVEMENT_GRANULARITY

Added in API level 16

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: ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT<, ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN
Example: Move to the previous character and do not extend selection.


   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);

See also:

Constant Value: 256 (0x00000100)

ACTION_NEXT_HTML_ELEMENT

Added in API level 16

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: ACTION_ARGUMENT_HTML_ELEMENT_STRING
Example:


   Bundle arguments = new Bundle();
   arguments.putString(AccessibilityNodeInfo.ACTION_ARGUMENT_HTML_ELEMENT_STRING, "BUTTON");
   info.performAction(AccessibilityNodeInfo.ACTION_NEXT_HTML_ELEMENT, arguments);

Constant Value: 1024 (0x00000400)

ACTION_PASTE

Added in API level 18

int ACTION_PASTE

Action to paste the current clipboard content.

Constant Value: 32768 (0x00008000)

ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY

Added in API level 16

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: ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT<, ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN
Example: Move to the next character and do not extend selection.


   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);

See also:

Constant Value: 512 (0x00000200)

ACTION_PREVIOUS_HTML_ELEMENT

Added in API level 16

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: ACTION_ARGUMENT_HTML_ELEMENT_STRING
Example:


   Bundle arguments = new Bundle();
   arguments.putString(AccessibilityNodeInfo.ACTION_ARGUMENT_HTML_ELEMENT_STRING, "BUTTON");
   info.performAction(AccessibilityNodeInfo.ACTION_PREVIOUS_HTML_ELEMENT, arguments);

Constant Value: 2048 (0x00000800)

ACTION_SCROLL_BACKWARD

Added in API level 16

int ACTION_SCROLL_BACKWARD

Action to scroll the node content backward.

Constant Value: 8192 (0x00002000)

ACTION_SCROLL_FORWARD

Added in API level 16

int ACTION_SCROLL_FORWARD

Action to scroll the node content forward.

Constant Value: 4096 (0x00001000)

ACTION_SELECT

Added in API level 14

int ACTION_SELECT

Action that selects the node.

Constant Value: 4 (0x00000004)

ACTION_SET_SELECTION

Added in API level 18

int ACTION_SET_SELECTION

Action to set the selection. Performing this action with no arguments clears the selection.

Arguments: ACTION_ARGUMENT_SELECTION_START_INT, ACTION_ARGUMENT_SELECTION_END_INT
Example:


   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);

See also:

Constant Value: 131072 (0x00020000)

ACTION_SET_TEXT

Added in API level 21

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: ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE
Example:


   Bundle arguments = new Bundle();
   arguments.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE,
       "android");
   info.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, arguments);

Constant Value: 2097152 (0x00200000)

FOCUS_ACCESSIBILITY

Added in API level 16

int FOCUS_ACCESSIBILITY

The accessibility focus.

Constant Value: 2 (0x00000002)

FOCUS_INPUT

Added in API level 16

int FOCUS_INPUT

The input focus.

Constant Value: 1 (0x00000001)

MOVEMENT_GRANULARITY_CHARACTER

Added in API level 16

int MOVEMENT_GRANULARITY_CHARACTER

Movement granularity bit for traversing the text of a node by character.

Constant Value: 1 (0x00000001)

MOVEMENT_GRANULARITY_LINE

Added in API level 16

int MOVEMENT_GRANULARITY_LINE

Movement granularity bit for traversing the text of a node by line.

Constant Value: 4 (0x00000004)

MOVEMENT_GRANULARITY_PAGE

Added in API level 16

int MOVEMENT_GRANULARITY_PAGE

Movement granularity bit for traversing the text of a node by page.

Constant Value: 16 (0x00000010)

MOVEMENT_GRANULARITY_PARAGRAPH

Added in API level 16

int MOVEMENT_GRANULARITY_PARAGRAPH

Movement granularity bit for traversing the text of a node by paragraph.

Constant Value: 8 (0x00000008)

MOVEMENT_GRANULARITY_WORD

Added in API level 16

int MOVEMENT_GRANULARITY_WORD

Movement granularity bit for traversing the text of a node by word.

Constant Value: 2 (0x00000002)

Fields

CREATOR

Added in API level 14

Creator<AccessibilityNodeInfo> CREATOR

See also:

Throws
`IllegalStateException`	If called from an AccessibilityService.
`IllegalArgumentException`	If the argument is not one of the standard actions.

Parameters
`root`	`View`: The root of the virtual subtree.
`virtualDescendantId`	`int`: The id of the virtual child.

Parameters
`action`	`int`: The action to perform.
`arguments`	`Bundle`: A bundle with additional arguments.

Parameters
`root`	`View`: The root whose virtual descendant serves as a label.
`virtualDescendantId`	`int`: The id of the virtual descendant.

Parameters
`start`	`int`: The text selection start.
`end`	`int`: The text selection end.

Parameters
`parcel`	`Parcel`: The Parcel in which the object should be written.
`flags`	`int`: Additional flags about how the object should be written. May be 0 or `PARCELABLE_WRITE_RETURN_VALUE`.

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AccessibilityNodeInfo

Developer Guides

Summary

Nested classes

Constants

Inherited constants

Fields

Public methods

Inherited methods

Constants

ACTION_ACCESSIBILITY_FOCUS

ACTION_ARGUMENT_COLUMN_INT

ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN

ACTION_ARGUMENT_HTML_ELEMENT_STRING

ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT

ACTION_ARGUMENT_PROGRESS_VALUE

ACTION_ARGUMENT_ROW_INT

ACTION_ARGUMENT_SELECTION_END_INT

ACTION_ARGUMENT_SELECTION_START_INT

ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE

ACTION_CLEAR_ACCESSIBILITY_FOCUS

ACTION_CLEAR_FOCUS

ACTION_CLEAR_SELECTION

ACTION_CLICK

ACTION_COLLAPSE

ACTION_COPY

ACTION_CUT

ACTION_DISMISS

ACTION_EXPAND

ACTION_FOCUS

ACTION_LONG_CLICK

ACTION_NEXT_AT_MOVEMENT_GRANULARITY

ACTION_NEXT_HTML_ELEMENT

ACTION_PASTE

ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY

ACTION_PREVIOUS_HTML_ELEMENT

ACTION_SCROLL_BACKWARD

ACTION_SCROLL_FORWARD

ACTION_SELECT

ACTION_SET_SELECTION

ACTION_SET_TEXT

FOCUS_ACCESSIBILITY

FOCUS_INPUT

MOVEMENT_GRANULARITY_CHARACTER

MOVEMENT_GRANULARITY_LINE

MOVEMENT_GRANULARITY_PAGE

MOVEMENT_GRANULARITY_PARAGRAPH

MOVEMENT_GRANULARITY_WORD

Fields

CREATOR

Public methods

addAction

addAction

addChild

addChild

canOpenPopup

describeContents

equals

findAccessibilityNodeInfosByText

findAccessibilityNodeInfosByViewId

findFocus

focusSearch

getActionList

getActions

getBoundsInParent

getBoundsInScreen

getChild

getChildCount

getClassName

getCollectionInfo

getCollectionItemInfo

getContentDescription

getDrawingOrder

getError

getExtras

getInputType

getLabelFor