android-AccessibilityServiceInfo

AccessibilityServiceInfo

public class AccessibilityServiceInfo

extends Object

implements Parcelable

java.lang.Object
↳	android.accessibilityservice.AccessibilityServiceInfo

This class describes an

AccessibilityService

. The system notifies
an

AccessibilityService

for

AccessibilityEvent

s
according to the information encapsulated in this class.

Developer Guides

For more information about creating AccessibilityServices, read the Accessibility developer
guide.

See also:

AccessibilityService

AccessibilityEvent

AccessibilityManager

Summary

XML attributes
android:accessibilityEventTypes	The event types this serivce would like to receive as specified in AccessibilityEvent .
android:accessibilityFeedbackType	The feedback types this serivce provides as specified in AccessibilityServiceInfo .
android:accessibilityFlags	Additional flags as specified in AccessibilityServiceInfo .
android:canRequestEnhancedWebAccessibility	Attribute whether the accessibility service wants to be able to request enhanced web accessibility enhancements.
android:canRequestFilterKeyEvents	Attribute whether the accessibility service wants to be able to request to filter key events.
android:canRequestTouchExplorationMode	Attribute whether the accessibility service wants to be able to request touch exploration mode in which touched items are spoken aloud and the UI can be explored via gestures.
android:canRetrieveWindowContent	Attribute whether the accessibility service wants to be able to retrieve the active window content.
android:description	Short description of the accessibility service purpose or behavior.
android:notificationTimeout	The minimal period in milliseconds between two accessibility events of the same type are sent to this serivce.
android:packageNames	Comma separated package names from which this serivce would like to receive events (leave out for all packages).
android:settingsActivity	Component name of an activity that allows the user to modify the settings for this service.

Constants
int	CAPABILITY_CAN_CONTROL_MAGNIFICATION Capability: This accessibility service can control display magnification.
int	CAPABILITY_CAN_PERFORM_GESTURES Capability: This accessibility service can perform gestures.
int	CAPABILITY_CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY Capability: This accessibility service can request enhanced web accessibility enhancements.
int	CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS Capability: This accessibility service can request to filter the key event stream.
int	CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION Capability: This accessibility service can request touch exploration mode in which touched items are spoken aloud and the UI can be explored via gestures.
int	CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT Capability: This accessibility service can retrieve the active window content.
int	DEFAULT If an AccessibilityService is the default for a given type.
int	FEEDBACK_ALL_MASK Mask for all feedback types.
int	FEEDBACK_AUDIBLE Denotes audible (not spoken) feedback.
int	FEEDBACK_BRAILLE Denotes braille feedback.
int	FEEDBACK_GENERIC Denotes generic feedback.
int	FEEDBACK_HAPTIC Denotes haptic feedback.
int	FEEDBACK_SPOKEN Denotes spoken feedback.
int	FEEDBACK_VISUAL Denotes visual feedback.
int	FLAG_INCLUDE_NOT_IMPORTANT_VIEWS If this flagis set the system will regard views that are not important for accessibility in addition to the ones that are important for accessibility.
int	FLAG_REPORT_VIEW_IDS This flagrequests that the AccessibilityNodeInfo s obtained by an AccessibilityService contain the id of the source view.
int	FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY This flagrequests from the system to enable web accessibility enhancing extensions.
int	FLAG_REQUEST_FILTER_KEY_EVENTS This flagrequests from the system to filter key events.
int	FLAG_REQUEST_TOUCH_EXPLORATION_MODE This flagrequests that the system gets into touch exploration mode.
int	FLAG_RETRIEVE_INTERACTIVE_WINDOWS This flagindicates to the system that the accessibility service wants to access content of all interactive windows.

Inherited constants
From interface android.os.Parcelable

Fields
public static finalCreator<AccessibilityServiceInfo>	CREATOR
public int	eventTypes The event types an AccessibilityService is interested in.
public int	feedbackType The feedback type an AccessibilityService provides.
public int	flags This field represents a set of flags used for configuring an AccessibilityService .
public long	notificationTimeout The timeout after the most recent event of a given type before an AccessibilityService is notified.
public String[]	packageNames The package names an AccessibilityService is interested in.

Public constructors
AccessibilityServiceInfo() Creates a new instance.

Public methods
staticString	capabilityToString(int capability) Returns the string representation of a capability.
int	describeContents() Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
staticString	feedbackTypeToString(int feedbackType) Returns the string representation of a feedback type.
staticString	flagToString(intflag) Returns the string representation of a flag.
boolean	getCanRetrieveWindowContent() This method was deprecated in API level 18. Use getCapabilities() .
int	getCapabilities() Returns the bit mask of capabilities this accessibility service has such as being able to retrieve the active window content, etc.
String	getDescription() This method was deprecated in API level 16. Use loadDescription(PackageManager) .
String	getId() The accessibility service id.
ResolveInfo	getResolveInfo() The service ResolveInfo .
String	getSettingsActivityName() The settings activity name.
int	hashCode() Returns a hash code value for the object.
String	loadDescription(PackageManager packageManager) The localized description of the accessibility service.
String	toString() Returns a string representation of the object.
void	writeToParcel(Parcel parcel, intflagz) Flatten this object in to a Parcel.

Inherited methods
From class java.lang.Object
From interface android.os.Parcelable

XML attributes

android:accessibilityEventTypes

The event types this serivce would like to receive as specified in

AccessibilityEvent

.
This setting can be changed at runtime by calling

android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)

.

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
typeViewClicked	0x00000001	Receives TYPE_VIEW_CLICKED events.
typeViewLongClicked	0x00000002	Receives TYPE_VIEW_LONG_CLICKED events.
typeViewSelected	0x00000004	Receives TYPE_VIEW_SELECTED events.
typeViewFocused	0x00000008	Receives TYPE_VIEW_FOCUSED events.
typeViewTextChanged	0x00000010	Receives TYPE_VIEW_TEXT_CHANGED events.
typeWindowStateChanged	0x00000020	Receives TYPE_WINDOW_STATE_CHANGED events.
typeNotificationStateChanged	0x00000040	Receives TYPE_NOTIFICATION_STATE_CHANGED events.
typeViewHoverEnter	0x00000080	Receives TYPE_VIEW_HOVER_ENTER events.
typeViewHoverExit	0x00000100	Receives TYPE_VIEW_HOVER_EXIT events.
typeTouchExplorationGestureStart	0x00000200	Receives TYPE_TOUCH_EXPLORATION_GESTURE_START events.
typeTouchExplorationGestureEnd	0x00000400	Receives TYPE_TOUCH_EXPLORATION_GESTURE_END events.
typeWindowContentChanged	0x00000800	Receives TYPE_WINDOW_CONTENT_CHANGED events.
typeViewScrolled	0x000001000	Receives TYPE_VIEW_SCROLLED events.
typeViewTextSelectionChanged	0x000002000	Receives TYPE_VIEW_TEXT_SELECTION_CHANGED events.
typeAnnouncement	0x00004000	Receives TYPE_ANNOUNCEMENT events.
typeViewAccessibilityFocused	0x00008000	Receives TYPE_VIEW_ACCESSIBILITY_FOCUSED events.
typeViewAccessibilityFocusCleared	0x00010000	Receives TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED events.
typeViewTextTraversedAtMovementGranularity	0x00020000	Receives TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY events.
typeGestureDetectionStart	0x00040000	Receives TYPE_GESTURE_DETECTION_START events.
typeGestureDetectionEnd	0x00080000	Receives TYPE_GESTURE_DETECTION_END events.
typeTouchInteractionStart	0x00100000	Receives TYPE_TOUCH_INTERACTION_START events.
typeTouchInteractionEnd	0x00200000	Receives TYPE_TOUCH_INTERACTION_END events.
typeWindowsChanged	0x00400000	Receives TYPE_WINDOWS_CHANGED events.
typeContextClicked	0x00800000	Receives TYPE_VIEW_CONTEXT_CLICKED events.
typeAssistReadingContext	0x01000000	Receives TYPE_ASSIST_READING_CONTEXT events.
typeAllMask	0xffffffff	Receives TYPES_ALL_MASK i.e. all events.

This corresponds to the global attribute resource symbol

accessibilityEventTypes

.

android:accessibilityFeedbackType

The feedback types this serivce provides as specified in

AccessibilityServiceInfo

.
This setting can be changed at runtime by calling

android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)

.

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
feedbackSpoken	0x00000001	Provides FEEDBACK_SPOKEN feedback.
feedbackHaptic	0x00000002	Provides FEEDBACK_HAPTIC feedback.
feedbackAudible	0x00000004	Provides FEEDBACK_AUDIBLE feedback.
feedbackVisual	0x00000008	Provides FEEDBACK_VISUAL feedback.
feedbackGeneric	0x00000010	Provides FEEDBACK_GENERIC feedback.
feedbackAllMask	0xffffffff	Provides FEEDBACK_ALL_MASK feedback.

This corresponds to the global attribute resource symbol

accessibilityFeedbackType

.

android:accessibilityFlags

Additional flags as specified in

AccessibilityServiceInfo

.
This setting can be changed at runtime by calling

android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)

.

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
flagDefault	0x00000001	Has flag DEFAULT
flagIncludeNotImportantViews	0x00000002	Has flag FLAG_INCLUDE_NOT_IMPORTANT_VIEWS
flagRequestTouchExplorationMode	0x00000004	Has flag FLAG_REQUEST_TOUCH_EXPLORATION_MODE
flagRequestEnhancedWebAccessibility	0x00000008	Has flag FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY
flagReportViewIds	0x00000010	Has flag FLAG_REPORT_VIEW_IDS
flagRequestFilterKeyEvents	0x00000020	Has flag FLAG_REQUEST_FILTER_KEY_EVENTS
flagRetrieveInteractiveWindows	0x00000040	Has flag FLAG_RETRIEVE_INTERACTIVE_WINDOWS

This corresponds to the global attribute resource symbol

accessibilityFlags

.

android:canRequestEnhancedWebAccessibility

Attribute whether the accessibility service wants to be able to request enhanced web accessibility enhancements. For example, installing scripts to make app content more accessible.

Required to allow setting the

#AccessibilityServiceInfo#FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY

flag.

Must be a booleanvalue, either "

true

" or "

false

".

This may also be a reference to a resource (in the form "

@[package:]type:name

") or theme attribute (in the form "

?[package:][type:]name

") containing a value of
this type.

This corresponds to the global attribute resource symbol

canRequestEnhancedWebAccessibility

.

android:canRequestFilterKeyEvents

Attribute whether the accessibility service wants to be able to request to filter key events.

Required to allow setting the

#AccessibilityServiceInfo#FLAG_REQUEST_FILTER_KEY_EVENTS

flag.

Must be a booleanvalue, either "

true

" or "

false

".

This may also be a reference to a resource (in the form "

@[package:]type:name

") or theme attribute (in the form "

?[package:][type:]name

") containing a value of
this type.

This corresponds to the global attribute resource symbol

canRequestFilterKeyEvents

.

android:canRequestTouchExplorationMode

Attribute whether the accessibility service wants to be able to request touch exploration mode in which touched items are spoken aloud and the UI can be explored via gestures.

Required to allow setting the

#AccessibilityServiceInfo#FLAG_REQUEST_TOUCH_EXPLORATION_MODE

flag.

Must be a booleanvalue, either "

true

" or "

false

".

This may also be a reference to a resource (in the form "

@[package:]type:name

") or theme attribute (in the form "

?[package:][type:]name

") containing a value of
this type.

This corresponds to the global attribute resource symbol

canRequestTouchExplorationMode

.

android:canRetrieveWindowContent

Attribute whether the accessibility service wants to be able to retrieve the active window content. This setting cannot be changed at runtime.

Must be a booleanvalue, either "

true

" or "

false

".

This may also be a reference to a resource (in the form "

@[package:]type:name

") or theme attribute (in the form "

?[package:][type:]name

") containing a value of
this type.

This corresponds to the global attribute resource symbol

canRetrieveWindowContent

.

android:description

Short description of the accessibility service purpose or behavior.

Must be a reference to another resource, in the form "

@[+][package:]type:name

" or to a theme attribute in the form "

?[package:][type:]name

".

This corresponds to the global attribute resource symbol

description

.

android:notificationTimeout

The minimal period in milliseconds between two accessibility events of the same type are sent to this serivce. This setting can be changed at runtime by calling

android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)

.

Must be an integer value, such as "

100

".

This may also be a reference to a resource (in the form "

@[package:]type:name

") or theme attribute (in the form "

?[package:][type:]name

") containing a value of
this type.

This corresponds to the global attribute resource symbol

notificationTimeout

.

android:packageNames

Comma separated package names from which this serivce would like to receive events (leave out for all packages).

android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)

.

Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.

This may also be a reference to a resource (in the form "

@[package:]type:name

") or theme attribute (in the form "

?[package:][type:]name

") containing a value of
this type.

This corresponds to the global attribute resource symbol

packageNames

.

android:settingsActivity

Component name of an activity that allows the user to modify the settings for this service. This setting cannot be changed at runtime.

Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.

This may also be a reference to a resource (in the form "

@[package:]type:name

") or theme attribute (in the form "

?[package:][type:]name

") containing a value of
this type.

This corresponds to the global attribute resource symbol

settingsActivity

.

Constants

CAPABILITY_CAN_CONTROL_MAGNIFICATION

Added in API level 24

intCAPABILITY_CAN_CONTROL_MAGNIFICATION

Capability: This accessibility service can control display magnification.

See also:

AccessibilityService_canControlMagnification

Constant Value: 16 (0x00000010)

CAPABILITY_CAN_PERFORM_GESTURES

Added in API level 24

intCAPABILITY_CAN_PERFORM_GESTURES

Capability: This accessibility service can perform gestures.

See also:

AccessibilityService_canPerformGestures

Constant Value: 32 (0x00000020)

CAPABILITY_CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY

Added in API level 18

intCAPABILITY_CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY

Capability: This accessibility service can request enhanced web accessibility enhancements. For example, installing scripts to make app content more accessible.

See also:

AccessibilityService_canRequestEnhancedWebAccessibility

Constant Value: 4 (0x00000004)

CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS

Added in API level 18

intCAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS

Capability: This accessibility service can request to filter the key event stream.

See also:

AccessibilityService_canRequestFilterKeyEvents

Constant Value: 8 (0x00000008)

CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION

Added in API level 18

intCAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION

Capability: This accessibility service can request touch exploration mode in which touched items are spoken aloud and the UI can be explored via gestures.

See also:

AccessibilityService_canRequestTouchExplorationMode

Constant Value: 2 (0x00000002)

CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT

Added in API level 18

intCAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT

Capability: This accessibility service can retrieve the active window content.

See also:

AccessibilityService_canRetrieveWindowContent

Constant Value: 1 (0x00000001)

DEFAULT

Added in API level 4

intDEFAULT

If an

AccessibilityService

is
the default for a given type. Default service is invoked only if no package specific one exists. In case of more than one package specific service only the earlier registered is notified.
Constant Value: 1 (0x00000001)

FEEDBACK_ALL_MASK

Added in API level 14

intFEEDBACK_ALL_MASK

Mask for all feedback types.

See also:

FEEDBACK_SPOKEN

FEEDBACK_HAPTIC

FEEDBACK_AUDIBLE

FEEDBACK_VISUAL

FEEDBACK_GENERIC

FEEDBACK_BRAILLE

Constant Value: -1 (0xffffffff)

FEEDBACK_AUDIBLE

Added in API level 4

intFEEDBACK_AUDIBLE

Denotes audible (not spoken) feedback.
Constant Value: 4 (0x00000004)

FEEDBACK_BRAILLE

Added in API level 17

intFEEDBACK_BRAILLE

Denotes braille feedback.
Constant Value: 32 (0x00000020)

FEEDBACK_GENERIC

Added in API level 4

intFEEDBACK_GENERIC

Denotes generic feedback.
Constant Value: 16 (0x00000010)

FEEDBACK_HAPTIC

Added in API level 4

intFEEDBACK_HAPTIC

Denotes haptic feedback.
Constant Value: 2 (0x00000002)

FEEDBACK_SPOKEN

Added in API level 4

intFEEDBACK_SPOKEN

Denotes spoken feedback.
Constant Value: 1 (0x00000001)

FEEDBACK_VISUAL

Added in API level 4

intFEEDBACK_VISUAL

Denotes visual feedback.
Constant Value: 8 (0x00000008)

FLAG_INCLUDE_NOT_IMPORTANT_VIEWS

Added in API level 16

intFLAG_INCLUDE_NOT_IMPORTANT_VIEWS

If this flagis set the system will regard views that are not important for accessibility in addition to the ones that are important for accessibility. That is, views that are marked as not important for accessibility
via

IMPORTANT_FOR_ACCESSIBILITY_NO

or

IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS

and
views that are marked as potentially important for accessibility via

IMPORTANT_FOR_ACCESSIBILITY_AUTO

for
which the system has determined that are not important for accessibility, are reported while querying the window content and also the accessibility service will receive accessibility events from them.
Note: For accessibility services targeting API version

JELLY_BEAN

or
higher this flaghas to be explicitly set for the system to regard views that are not important for accessibility. For accessibility services targeting API version lower than

JELLY_BEAN

this
flagis ignored and all views are regarded for accessibility purposes.
Usually views not important for accessibility are layout managers that do not react to user actions, do not draw any content, and do not have any special semantics in the context of the screen content. For example,
a three by three grid can be implemented as three horizontal linear layouts and one vertical, or three vertical linear layouts and one horizontal, or one grid layout, etc. In this context the actual layout mangers used to achieve the grid configuration are
not important, rather it is important that there are nine evenly distributed elements.

Constant Value: 2 (0x00000002)

FLAG_REPORT_VIEW_IDS

Added in API level 18

intFLAG_REPORT_VIEW_IDS

This flagrequests that the

AccessibilityNodeInfo

s
obtained by an

AccessibilityService

contain the id of the
source view. The source view id will be a fully qualified resource name of the form "package:id/name", for example "foo.bar:id/my_list", and it is useful for UI test automation. This flagis not set by default.
Constant Value: 16 (0x00000010)

FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY

Added in API level 18

intFLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY

This flagrequests from the system to enable web accessibility enhancing extensions. Such extensions aim to provide improved accessibility support for content presented in a

WebView

.
An example of such an extension is injecting JavaScript from a secure source. The system will enable enhanced web accessibility if there is at least one accessibility service that has this flagset. Hence, clearing this flagdoes not guarantee that the device
will not have enhanced web accessibility enabled since there may be another enabled service that requested it.
Services that want to set this flaghave to declare this capabilityin their meta-data by setting the attribute

#canRequestEnhancedWebAccessibility
canRequestEnhancedWebAccessibility

to true, otherwise this flagwill be ignored. For how to declare the meta-data of a service refer to

AccessibilityService.SERVICE_META_DATA

.

See also:

AccessibilityService_canRequestEnhancedWebAccessibility

Constant Value: 8 (0x00000008)

FLAG_REQUEST_FILTER_KEY_EVENTS

Added in API level 18

intFLAG_REQUEST_FILTER_KEY_EVENTS

This flagrequests from the system to filter key events. If this flagis set the accessibility service will receive the key events before applications allowing it implement global shortcuts.
Services that want to set this flaghave to declare this capabilityin their meta-data by setting the attribute

#canRequestFilterKeyEvents
canRequestFilterKeyEvents

to true, otherwise this flagwill be ignored. For how to declare the meta-data of a service refer to

AccessibilityService.SERVICE_META_DATA

.

See also:

AccessibilityService_canRequestFilterKeyEvents

Constant Value: 32 (0x00000020)

FLAG_REQUEST_TOUCH_EXPLORATION_MODE

Added in API level 16

intFLAG_REQUEST_TOUCH_EXPLORATION_MODE

This flagrequests that the system gets into touch exploration mode. In this mode a single finger moving on the screen behaves as a mouse pointer hovering over the user interface. The system will also detect certain
gestures performed on the touch screen and notify this service. The system will enable touch exploration mode if there is at least one accessibility service that has this flagset. Hence, clearing this flagdoes not guarantee that the device will not be in
touch exploration mode since there may be another enabled service that requested it.
For accessibility services targeting API version higher than

JELLY_BEAN_MR1

that
want to set this flaghave to declare this capabilityin their meta-data by setting the attribute

canRequestTouchExplorationMode

to
true, otherwise this flagwill be ignored. For how to declare the meta-data of a service refer to

AccessibilityService.SERVICE_META_DATA

.
Services targeting API version equal to or lower than

JELLY_BEAN_MR1

will
work normally, i.e. the first time they are run, if this flagis specified, a dialog is shown to the user to confirm enabling explore by touch.

See also:

AccessibilityService_canRequestTouchExplorationMode

Constant Value: 4 (0x00000004)

FLAG_RETRIEVE_INTERACTIVE_WINDOWS

Added in API level 21

intFLAG_RETRIEVE_INTERACTIVE_WINDOWS

This flagindicates to the system that the accessibility service wants to access content of all interactive windows. An interactive window is a window that has input focus or can be touched by a sighted user when
explore by touch is not enabled. If this flagis not set your service will not receive

TYPE_WINDOWS_CHANGED

events,
calling AccessibilityService

AccessibilityService.getWindows()

will
return an empty list, and

AccessibilityNodeInfo.getWindow()

will
return null.
Services that want to set this flaghave to declare the capabilityto retrieve window content in their meta-data by setting the attribute

canRetrieveWindowContent

to
true, otherwise this flagwill be ignored. For how to declare the meta-data of a service refer to

AccessibilityService.SERVICE_META_DATA

.

See also:

AccessibilityService_canRetrieveWindowContent

Constant Value: 64 (0x00000040)

Fields

CREATOR

Added in API level 4

Creator<AccessibilityServiceInfo> CREATOR

See also:

Parcelable.Creator

eventTypes

Added in API level 4

inteventTypes

The event types an

AccessibilityService

is
interested in.
Can be dynamically set at runtime.

See also:

TYPE_VIEW_CLICKED

TYPE_VIEW_LONG_CLICKED

TYPE_VIEW_FOCUSED

TYPE_VIEW_SELECTED

TYPE_VIEW_TEXT_CHANGED

TYPE_WINDOW_STATE_CHANGED

TYPE_NOTIFICATION_STATE_CHANGED

TYPE_TOUCH_EXPLORATION_GESTURE_START

TYPE_TOUCH_EXPLORATION_GESTURE_END

TYPE_VIEW_HOVER_ENTER

TYPE_VIEW_HOVER_EXIT

TYPE_VIEW_SCROLLED

TYPE_VIEW_TEXT_SELECTION_CHANGED

TYPE_WINDOW_CONTENT_CHANGED

TYPE_TOUCH_INTERACTION_START

TYPE_TOUCH_INTERACTION_END

TYPE_ANNOUNCEMENT

TYPE_GESTURE_DETECTION_START

TYPE_GESTURE_DETECTION_END

TYPE_VIEW_ACCESSIBILITY_FOCUSED

TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED

TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY

TYPE_WINDOWS_CHANGED

feedbackType

Added in API level 4

intfeedbackType

The feedback type an

AccessibilityService

provides.
Can be dynamically set at runtime.

See also:

FEEDBACK_AUDIBLE

FEEDBACK_GENERIC

FEEDBACK_HAPTIC

FEEDBACK_SPOKEN

FEEDBACK_VISUAL

FEEDBACK_BRAILLE

flags

Added in API level 4

intflags

This field represents a set of flags used for configuring an

AccessibilityService

.
Can be dynamically set at runtime.

See also:

DEFAULT

FLAG_INCLUDE_NOT_IMPORTANT_VIEWS

FLAG_REQUEST_TOUCH_EXPLORATION_MODE

FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY

FLAG_REQUEST_FILTER_KEY_EVENTS

FLAG_REPORT_VIEW_IDS

FLAG_RETRIEVE_INTERACTIVE_WINDOWS

notificationTimeout

Added in API level 4

long notificationTimeout

The timeout after the most recent event of a given type before an

AccessibilityService

is
notified.
Can be dynamically set at runtime..
Note: The event notification timeout is useful to avoid propagating events to the client too frequently since this is accomplished via an expensive interprocess call. One can think of the timeout
as a criteria to determine when event generation has settled down.

packageNames

Added in API level 4

String[] packageNames

The package names an

AccessibilityService

is
interested in. Setting to

null

is equivalent to all packages.
Can be dynamically set at runtime.

Public constructors

AccessibilityServiceInfo

Added in API level 4

AccessibilityServiceInfo ()

Creates a new instance.

Public methods

capabilityToString

Added in API level 18

String capabilityToString (intcapability)

Returns the string representation of a capability. For example,

CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT

is
represented by the string CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT.

Parameters
capability	int : The capability.

Returns
String	The string representation.

describeContents

Added in API level 4

intdescribeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of

writeToParcel(Parcel,
int)

, the return value of this method must include the

CONTENTS_FILE_DESCRIPTOR

bit.

Returns
int	a bitmask indicating the set of special object types marshaled by this Parcelable object instance.

equals

Added in API level 4

booleanequals (Object obj)

Indicates whether some other object is "equal to" this one.
The

equals

method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value

x

,

x.equals(x)

should return

true

.
It is symmetric: for any non-null reference values

x

and

y

,

x.equals(y)

should return

true

if and only if

y.equals(x)

returns

true

.
It is transitive: for any non-null reference values

x

,

y

, and

z

, if

x.equals(y)

returns

true

and

y.equals(z)

returns

true

,
then

x.equals(z)

should return

true

.
It is consistent: for any non-null reference values

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.
For any non-null reference value

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 objargument; false otherwise.

feedbackTypeToString

Added in API level 14

String feedbackTypeToString (intfeedbackType)

Returns the string representation of a feedback type. For example,

FEEDBACK_SPOKEN

is
represented by the string FEEDBACK_SPOKEN.

Parameters
feedbackType	int : The feedback type.

Returns
String	The string representation.

flagToString

Added in API level 14

String flagToString (intflag)

Returns the string representation of a flag. For example,

DEFAULT

is
represented by the string DEFAULT.

Parameters
flag	int : The flag.

Returns
String	The string representation.

getCanRetrieveWindowContent

Added in API level 14

booleangetCanRetrieveWindowContent ()

This method was deprecated in API level 18.

Use

getCapabilities()

.
Whether this service can retrieve the current window's content.
Statically set from

meta-data

.

Returns
boolean	True if window content can be retrieved.

getCapabilities

Added in API level 18

intgetCapabilities ()

Returns the bit mask of capabilities this accessibility service has such as being able to retrieve the active window content, etc.

Returns
int	The capabilitybit mask.

See also:

CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT

CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION

CAPABILITY_CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY

ERROR(/#CAPABILITY_FILTER_KEY_EVENTS)

CAPABILITY_CAN_CONTROL_MAGNIFICATION

CAPABILITY_CAN_PERFORM_GESTURES

getDescription

Added in API level 14

String getDescription ()

This method was deprecated in API level 16.

Use

loadDescription(PackageManager)

.
Gets the non-localized description of the accessibility service.
Statically set from

meta-data

.

Returns
String	The description.

getId

Added in API level 14

String getId ()

The accessibility service id.
Generated by the system.

Returns
String	The id.

getResolveInfo

Added in API level 14

ResolveInfo getResolveInfo ()

The service

ResolveInfo

.
Generated by the system.

Returns
ResolveInfo	The info.

getSettingsActivityName

Added in API level 14

String getSettingsActivityName ()

The settings activity name.
Statically set from

meta-data

.

Returns
String	The settings activity name.

hashCode

Added in API level 4

inthashCode ()

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:

Whenever it is invoked on the same object more than once during an execution of a Java application, the

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.
If two objects are equal according to the

equals(Object)

method, then calling the

hashCode

method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the

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 JavaTMprogramming language.)

Returns
int	a hash code value for this object.

loadDescription

Added in API level 16

String loadDescription (PackageManager packageManager)

The localized description of the accessibility service.
Statically set from

meta-data

.

Parameters
packageManager	PackageManager

Returns
String	The localized description.

toString

Added in API level 4

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.

writeToParcel

Added in API level 4

void writeToParcel (Parcel parcel,
intflagz)

Flatten this object in to a Parcel.

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