AccessibilityRecord

public class AccessibilityRecord
extends Object

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


Represents a record in an AccessibilityEvent and contains information about state change of its source View. When a view fires an accessibility event it requests from its parent to dispatch the constructed event. The parent may optionally append a record for itself for providing more context to AccessibilityServices. Hence, accessibility services can facilitate additional accessibility records to enhance feedback.

Once the accessibility event containing a record is dispatched the record is made immutable and calling a state mutation method generates an error.

Note: Not all properties are applicable to all accessibility event types. For detailed information please refer to AccessibilityEvent.

Developer Guides

For more information about creating and processing AccessibilityRecords, read the Accessibility developer guide.

Summary

Public constructors

AccessibilityRecord()

Creates a new AccessibilityRecord.

AccessibilityRecord(AccessibilityRecord record)

Copy constructor.

Public methods

int getAddedCount()

Gets the number of added characters.

CharSequence getBeforeText()

Gets the text before a change.

CharSequence getClassName()

Gets the class name of the source.

CharSequence getContentDescription()

Gets the description of the source.

int getCurrentItemIndex()

Gets the index of the source in the list of items the can be visited.

int getDisplayId()

Gets the id of the display from which the event comes from.

int getFromIndex()

Gets the index of the first character of the changed sequence, or the beginning of a text selection or the index of the first visible item when scrolling.

int getItemCount()

Gets the number of items that can be visited.

int getMaxScrollX()

Gets the max scroll offset of the source left edge in pixels.

int getMaxScrollY()

Gets the max scroll offset of the source top edge in pixels.

Parcelable getParcelableData()

Gets the Parcelable data.

int getRemovedCount()

Gets the number of removed characters.

int getScrollDeltaX()

Gets the difference in pixels between the horizontal position before the scroll and the current horizontal position

int getScrollDeltaY()

Gets the difference in pixels between the vertical position before the scroll and the current vertical position

int getScrollX()

Gets the scroll offset of the source left edge in pixels.

int getScrollY()

Gets the scroll offset of the source top edge in pixels.

AccessibilityNodeInfo getSource()

Gets the AccessibilityNodeInfo of the event source.

AccessibilityNodeInfo getSource(int prefetchingStrategy)

Gets the AccessibilityNodeInfo of the event source.

List<CharSequence> getText()

Gets the text of the event.

int getToIndex()

Gets the index of text selection end or the index of the last visible item when scrolling.

int getWindowId()

Gets the id of the window from which the event comes from.

boolean isChecked()

Gets if the source is checked.

boolean isEnabled()

Gets if the source is enabled.

boolean isFullScreen()

Gets if the source is taking the entire screen.

boolean isPassword()

Gets if the source is a password field.

boolean isScrollable()

Gets if the source is scrollable.

static AccessibilityRecord obtain(AccessibilityRecord record)

This method was deprecated in API level 33. Object pooling has been discontinued. Create a new instance using the constructor AccessibilityRecord() instead.

static AccessibilityRecord obtain()

This method was deprecated in API level 33. Object pooling has been discontinued. Create a new instance using the constructor AccessibilityRecord() instead.

void recycle()

This method was deprecated in API level 33. Object pooling has been discontinued. Calling this function now will have no effect.

void setAddedCount(int addedCount)

Sets the number of added characters.

void setBeforeText(CharSequence beforeText)

Sets the text before a change.

void setChecked(boolean isChecked)

Sets if the source is checked.

void setClassName(CharSequence className)

Sets the class name of the source.

void setContentDescription(CharSequence contentDescription)

Sets the description of the source.

void setCurrentItemIndex(int currentItemIndex)

Sets the index of the source in the list of items that can be visited.

void setEnabled(boolean isEnabled)

Sets if the source is enabled.

void setFromIndex(int fromIndex)

Sets the index of the first character of the changed sequence or the beginning of a text selection or the index of the first visible item when scrolling.

void setFullScreen(boolean isFullScreen)

Sets if the source is taking the entire screen.

void setItemCount(int itemCount)

Sets the number of items that can be visited.

void setMaxScrollX(int maxScrollX)

Sets the max scroll offset of the source left edge in pixels.

void setMaxScrollY(int maxScrollY)

Sets the max scroll offset of the source top edge in pixels.

void setParcelableData(Parcelable parcelableData)

Sets the Parcelable data of the event.

void setPassword(boolean isPassword)

Sets if the source is a password field.

void setRemovedCount(int removedCount)

Sets the number of removed characters.

void setScrollDeltaX(int scrollDeltaX)

Sets the difference in pixels between the horizontal position before the scroll and the current horizontal position

void setScrollDeltaY(int scrollDeltaY)

Sets the difference in pixels between the vertical position before the scroll and the current vertical position

void setScrollX(int scrollX)

Sets the scroll offset of the source left edge in pixels.

void setScrollY(int scrollY)

Sets the scroll offset of the source top edge in pixels.

void setScrollable(boolean scrollable)

Sets if the source is scrollable.

void setSource(View root, int virtualDescendantId)

Sets the source to be a virtual descendant of the given root.

void setSource(View source)

Sets the event source.

void setToIndex(int toIndex)

Sets the index of text selection end or the index of the last visible item when scrolling.

String toString()

Returns a string representation of the object.

Inherited methods

Public constructors

AccessibilityRecord

Added in API level 14
public AccessibilityRecord ()

Creates a new AccessibilityRecord.

AccessibilityRecord

Added in API level 14
public AccessibilityRecord (AccessibilityRecord record)

Copy constructor. Creates a new AccessibilityRecord, and this instance is initialized with data from the given record.

Parameters
record AccessibilityRecord: The other record. This value cannot be null.

Public methods

getAddedCount

Added in API level 14
public int getAddedCount ()

Gets the number of added characters.

Returns
int The number of added characters.

getBeforeText

Added in API level 14
public CharSequence getBeforeText ()

Gets the text before a change.

Returns
CharSequence The text before the change. This value may be null.

getClassName

Added in API level 14
public CharSequence getClassName ()

Gets the class name of the source.

Returns
CharSequence The class name. This value may be null.

getContentDescription

Added in API level 14
public CharSequence getContentDescription ()

Gets the description of the source.

Returns
CharSequence The description. This value may be null.

getCurrentItemIndex

Added in API level 14
public int getCurrentItemIndex ()

Gets the index of the source in the list of items the can be visited.

Returns
int The current item index.

getDisplayId

Added in API level 33
public int getDisplayId ()

Gets the id of the display from which the event comes from.

Returns
int The display id.

getFromIndex

Added in API level 14
public int getFromIndex ()

Gets the index of the first character of the changed sequence, or the beginning of a text selection or the index of the first visible item when scrolling.

Returns
int The index of the first character or selection start or the first visible item.

getItemCount

Added in API level 14
public int getItemCount ()

Gets the number of items that can be visited.

Returns
int The number of items.

getMaxScrollX

Added in API level 15
public int getMaxScrollX ()

Gets the max scroll offset of the source left edge in pixels.

Returns
int The max scroll.

getMaxScrollY

Added in API level 15
public int getMaxScrollY ()

Gets the max scroll offset of the source top edge in pixels.

Returns
int The max scroll.

getParcelableData

Added in API level 14
public Parcelable getParcelableData ()

Gets the Parcelable data.

Returns
Parcelable The parcelable data. This value may be null.

getRemovedCount

Added in API level 14
public int getRemovedCount ()

Gets the number of removed characters.

Returns
int The number of removed characters.

getScrollDeltaX

Added in API level 28
public int getScrollDeltaX ()

Gets the difference in pixels between the horizontal position before the scroll and the current horizontal position

Returns
int the scroll delta x

getScrollDeltaY

Added in API level 28
public int getScrollDeltaY ()

Gets the difference in pixels between the vertical position before the scroll and the current vertical position

Returns
int the scroll delta y

getScrollX

Added in API level 14
public int getScrollX ()

Gets the scroll offset of the source left edge in pixels.

Returns
int The scroll.

getScrollY

Added in API level 14
public int getScrollY ()

Gets the scroll offset of the source top edge in pixels.

Returns
int The scroll.

getSource

Added in API level 14
public AccessibilityNodeInfo getSource ()

Gets the AccessibilityNodeInfo of the event source.

Note: It is a client responsibility to recycle the received info by calling AccessibilityNodeInfo#recycle() to avoid creating of multiple instances.

Returns
AccessibilityNodeInfo The info of the source. This value may be null.

getText

Added in API level 14
public List<CharSequence> getText ()

Gets the text of the event. The index in the list represents the priority of the text. Specifically, the lower the index the higher the priority.

Returns
List<CharSequence> The text. This value cannot be null.

getToIndex

Added in API level 14
public int getToIndex ()

Gets the index of text selection end or the index of the last visible item when scrolling.

Returns
int The index of selection end or last item index.

getWindowId

Added in API level 14
public int getWindowId ()

Gets the id of the window from which the event comes from.

Returns
int The window id.

isChecked

Added in API level 14
public boolean isChecked ()

Gets if the source is checked.

Returns
boolean True if the view is checked, false otherwise.

isEnabled

Added in API level 14
public boolean isEnabled ()

Gets if the source is enabled.

Returns
boolean True if the view is enabled, false otherwise.

isFullScreen

Added in API level 14
public boolean isFullScreen ()

Gets if the source is taking the entire screen.

Returns
boolean True if the source is full screen, false otherwise.

isPassword

Added in API level 14
public boolean isPassword ()

Gets if the source is a password field.

Returns
boolean True if the view is a password field, false otherwise.

isScrollable

Added in API level 14
public boolean isScrollable ()

Gets if the source is scrollable.

Returns
boolean True if the source is scrollable, false otherwise.

obtain

Added in API level 14
Deprecated in API level 33
public static AccessibilityRecord obtain (AccessibilityRecord record)

This method was deprecated in API level 33.
Object pooling has been discontinued. Create a new instance using the constructor AccessibilityRecord() instead.

Instantiates a new record initialized with data from the given record.

Parameters
record AccessibilityRecord: This value cannot be null.

Returns
AccessibilityRecord An instance. This value cannot be null.

obtain

Added in API level 14
Deprecated in API level 33
public static AccessibilityRecord obtain ()

This method was deprecated in API level 33.
Object pooling has been discontinued. Create a new instance using the constructor AccessibilityRecord() instead.

Instantiates a new record.

Returns
AccessibilityRecord An instance. This value cannot be null.

recycle

Added in API level 14
Deprecated in API level 33
public void recycle ()

This method was deprecated in API level 33.
Object pooling has been discontinued. Calling this function now will have no effect.

Would previously return an instance back to be reused.

setAddedCount

Added in API level 14
public void setAddedCount (int addedCount)

Sets the number of added characters.

Parameters
addedCount int: The number of added characters.

Throws
IllegalStateException If called from an AccessibilityService.

setBeforeText

Added in API level 14
public void setBeforeText (CharSequence beforeText)

Sets the text before a change.

Parameters
beforeText CharSequence: The text before the change. This value may be null.

Throws
IllegalStateException If called from an AccessibilityService.

setChecked

Added in API level 14
public void setChecked (boolean isChecked)

Sets if the source is checked.

Parameters
isChecked boolean: True if the view is checked, false otherwise.

Throws
IllegalStateException If called from an AccessibilityService.

setClassName

Added in API level 14
public void setClassName (CharSequence className)

Sets the class name of the source.

Parameters
className CharSequence: The lass name. This value may be null.

Throws
IllegalStateException If called from an AccessibilityService.

setContentDescription

Added in API level 14
public void setContentDescription (CharSequence contentDescription)

Sets the description of the source.

Parameters
contentDescription CharSequence: The description. This value may be null.

Throws
IllegalStateException If called from an AccessibilityService.

setCurrentItemIndex

Added in API level 14
public void setCurrentItemIndex (int currentItemIndex)

Sets the index of the source in the list of items that can be visited.

Parameters
currentItemIndex int: The current item index.

Throws
IllegalStateException If called from an AccessibilityService.

setEnabled

Added in API level 14
public void setEnabled (boolean isEnabled)

Sets if the source is enabled.

Parameters
isEnabled boolean: True if the view is enabled, false otherwise.

Throws
IllegalStateException If called from an AccessibilityService.

setFromIndex

Added in API level 14
public void setFromIndex (int fromIndex)

Sets the index of the first character of the changed sequence or the beginning of a text selection or the index of the first visible item when scrolling.

Parameters
fromIndex int: The index of the first character or selection start or the first visible item.

Throws
IllegalStateException If called from an AccessibilityService.

setFullScreen

Added in API level 14
public void setFullScreen (boolean isFullScreen)

Sets if the source is taking the entire screen.

Parameters
isFullScreen boolean: True if the source is full screen, false otherwise.

Throws
IllegalStateException If called from an AccessibilityService.

setItemCount

Added in API level 14
public void setItemCount (int itemCount)

Sets the number of items that can be visited.

Parameters
itemCount int: The number of items.

Throws
IllegalStateException If called from an AccessibilityService.

setMaxScrollX

Added in API level 15
public void setMaxScrollX (int maxScrollX)

Sets the max scroll offset of the source left edge in pixels.

Parameters
maxScrollX int: The max scroll.

setMaxScrollY

Added in API level 15
public void setMaxScrollY (int maxScrollY)

Sets the max scroll offset of the source top edge in pixels.

Parameters
maxScrollY int: The max scroll.

setParcelableData

Added in API level 14
public void setParcelableData (Parcelable parcelableData)

Sets the Parcelable data of the event.

Parameters
parcelableData Parcelable: The parcelable data. This value may be null.

Throws
IllegalStateException If called from an AccessibilityService.

setPassword

Added in API level 14
public void setPassword (boolean isPassword)

Sets if the source is a password field.

Parameters
isPassword boolean: True if the view is a password field, false otherwise.

Throws
IllegalStateException If called from an AccessibilityService.

setRemovedCount

Added in API level 14
public void setRemovedCount (int removedCount)

Sets the number of removed characters.

Parameters
removedCount int: The number of removed characters.

Throws
IllegalStateException If called from an AccessibilityService.

setScrollDeltaX

Added in API level 28
public void setScrollDeltaX (int scrollDeltaX)

Sets the difference in pixels between the horizontal position before the scroll and the current horizontal position

Parameters
scrollDeltaX int: the scroll delta x

setScrollDeltaY

Added in API level 28
public void setScrollDeltaY (int scrollDeltaY)

Sets the difference in pixels between the vertical position before the scroll and the current vertical position

Parameters
scrollDeltaY int: the scroll delta y

setScrollX

Added in API level 14
public void setScrollX (int scrollX)

Sets the scroll offset of the source left edge in pixels.

Parameters
scrollX int: The scroll.

setScrollY

Added in API level 14
public void setScrollY (int scrollY)

Sets the scroll offset of the source top edge in pixels.

Parameters
scrollY int: The scroll.

setScrollable

Added in API level 14
public void setScrollable (boolean scrollable)

Sets if the source is scrollable.

Parameters
scrollable boolean: True if the source is scrollable, false otherwise.

Throws
IllegalStateException If called from an AccessibilityService.

setSource

Added in API level 16
public void setSource (View root, 
                int virtualDescendantId)

Sets the source to be a virtual descendant of the given root. If virtualDescendantId equals to View#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 them selves as a tree of virtual views, thus conveying their logical structure.

Parameters
root View: The root of the virtual subtree. This value may be null.

virtualDescendantId int: The id of the virtual descendant.

setSource

Added in API level 14
public void setSource (View source)

Sets the event source.

Parameters
source View: The source. This value may be null.

Throws
IllegalStateException If called from an AccessibilityService.

setToIndex

Added in API level 14
public void setToIndex (int toIndex)

Sets the index of text selection end or the index of the last visible item when scrolling.

Parameters
toIndex int: The index of selection end or last item index.

toString

Added in API level 14
public String toString ()

Returns a string representation of the object.

Returns
String a string representation of the object.