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Summary: Ctors | Methods | Inherited Methods

AccessibilityRecord

public class AccessibilityRecord
extends Object

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

Known direct subclasses

AccessibilityEvent

This class represents accessibility events that are sent by the system when something notable happens in the user interface.

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.

See also:

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`	`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.
`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)` Returns a cached instance if such is available or a new one is instantiated.
`static AccessibilityRecord`	`obtain()` Returns a cached instance if such is available or a new one is instantiated.
`void`	`recycle()` Return an instance back to be reused.
`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

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 timeout, 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 timeout)` 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.

Public constructors

AccessibilityRecord

public AccessibilityRecord ()

Creates a new AccessibilityRecord.

AccessibilityRecord

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

public int getAddedCount ()

Gets the number of added characters.

Returns
`int`	The number of added characters.

getBeforeText

public CharSequence getBeforeText ()

Gets the text before a change.

Returns
`CharSequence`	The text before the change.

getClassName

public CharSequence getClassName ()

Gets the class name of the source.

Returns
`CharSequence`	The class name.

getContentDescription

public CharSequence getContentDescription ()

Gets the description of the source.

Returns
`CharSequence`	The description.

getCurrentItemIndex

public int getCurrentItemIndex ()

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

Returns
`int`	The current item index.

getFromIndex

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

public int getItemCount ()

Gets the number of items that can be visited.

Returns
`int`	The number of items.

getMaxScrollX

public int getMaxScrollX ()

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

Returns
`int`	The max scroll.

getMaxScrollY

public int getMaxScrollY ()

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

Returns
`int`	The max scroll.

getParcelableData

public Parcelable getParcelableData ()

Gets the Parcelable data.

Returns
`Parcelable`	The parcelable data.

getRemovedCount

public int getRemovedCount ()

Gets the number of removed characters.

Returns
`int`	The number of removed characters.

getScrollDeltaX

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

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

public int getScrollX ()

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

Returns
`int`	The scroll.

getScrollY

public int getScrollY ()

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

Returns
`int`	The scroll.

getSource

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.

getText

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.

getToIndex

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

public int getWindowId ()

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

Returns
`int`	The window id.

isChecked

public boolean isChecked ()

Gets if the source is checked.

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

isEnabled

public boolean isEnabled ()

Gets if the source is enabled.

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

isFullScreen

public boolean isFullScreen ()

Gets if the source is taking the entire screen.

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

isPassword

public boolean isPassword ()

Gets if the source is a password field.

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

isScrollable

public boolean isScrollable ()

Gets if the source is scrollable.

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

obtain

public static AccessibilityRecord obtain (AccessibilityRecord record)

Returns a cached instance if such is available or a new one is instantiated. The instance is initialized with data from the given record.

In most situations object pooling is not beneficial. Create a new instance using the constructor AccessibilityRecord(android.view.accessibility.AccessibilityRecord) instead.

Parameters
`record`	`AccessibilityRecord`

Returns
`AccessibilityRecord`	An instance.

obtain

public static AccessibilityRecord obtain ()

Returns a cached instance if such is available or a new one is instantiated.

In most situations object pooling is not beneficial. Create a new instance using the constructor AccessibilityRecord() instead.

Returns
`AccessibilityRecord`	An instance.

recycle

public void recycle ()

Return an instance back to be reused.

Note: You must not touch the object after calling this function.

In most situations object pooling is not beneficial, and recycling is not necessary.

Throws
`IllegalStateException`	If the record is already recycled.

setAddedCount

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

public void setBeforeText (CharSequence beforeText)

Sets the text before a change.

Parameters
`beforeText`	`CharSequence`: The text before the change.

Throws
`IllegalStateException`	If called from an AccessibilityService.

setChecked

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

public void setClassName (CharSequence className)

Sets the class name of the source.

Parameters
`className`	`CharSequence`: The lass name.

Throws
`IllegalStateException`	If called from an AccessibilityService.

setContentDescription

public void setContentDescription (CharSequence contentDescription)

Sets the description of the source.

Parameters
`contentDescription`	`CharSequence`: The description.

Throws
`IllegalStateException`	If called from an AccessibilityService.

setCurrentItemIndex

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

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

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

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

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

public void setMaxScrollX (int maxScrollX)

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

Parameters
`maxScrollX`	`int`: The max scroll.

setMaxScrollY

public void setMaxScrollY (int maxScrollY)

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

Parameters
`maxScrollY`	`int`: The max scroll.

setParcelableData

public void setParcelableData (Parcelable parcelableData)

Sets the Parcelable data of the event.

Parameters
`parcelableData`	`Parcelable`: The parcelable data.

Throws
`IllegalStateException`	If called from an AccessibilityService.

setPassword

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

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

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

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

public void setScrollX (int scrollX)

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

Parameters
`scrollX`	`int`: The scroll.

setScrollY

public void setScrollY (int scrollY)

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

Parameters
`scrollY`	`int`: The scroll.

setScrollable

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

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

public void setSource (View source)

Sets the event source.

Parameters
`source`	`View`: The source.

Throws
`IllegalStateException`	If called from an AccessibilityService.

setToIndex

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

public 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.