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# 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 service would like to receive as specified in `AccessibilityEvent`.
`android:accessibilityFeedbackType` | The feedback types this service 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:canTakeScreenshot` | Attribute whether the accessibility service wants to be able to take screenshot.
`android:description` | Short description of the accessibility service purpose or behavior.
`android:interactiveUiTimeout` | A recommended timeout in milliseconds used in `android.view.accessibility.AccessibilityManager.getRecommendedTimeoutMillis(int, int)` to return a suitable value for interactive controls.
`android:nonInteractiveUiTimeout` | A recommended timeout in milliseconds used in `android.view.accessibility.AccessibilityManager.getRecommendedTimeoutMillis(int, int)` to return a suitable value for UIs that do not include interactive controls.
`android:notificationTimeout` | The minimal period in milliseconds between two accessibility events of the same type are sent to this service.
`android:packageNames` | Comma separated package names from which this service 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.
`android:summary` | Brief summary of the accessibility service purpose or behavior.

### 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` This constant is deprecated. No longer used
`int` | `CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS` Capability: This accessibility service can request to filter the key event stream.
`int` | `CAPABILITY_CAN_REQUEST_FINGERPRINT_GESTURES` Capability: This accessibility service can capture gestures from the fingerprint sensor
`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` | `CAPABILITY_CAN_TAKE_SCREENSHOT` Capability: This accessibility service can take screenshot.
`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_ENABLE_ACCESSIBILITY_VOLUME` This flag requests that all audio tracks system-wide with `AudioAttributes.USAGE_ASSISTANCE_ACCESSIBILITY` be controlled by the `AudioManager.STREAM_ACCESSIBILITY` volume.
`int` | `FLAG_INCLUDE_NOT_IMPORTANT_VIEWS` If this flag is 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 flag requests that the `AccessibilityNodeInfo`s obtained by an `AccessibilityService` contain the id of the source view.
`int` | `FLAG_REQUEST_2_FINGER_PASSTHROUGH` This flag requests that when when `FLAG_REQUEST_MULTI_FINGER_GESTURES` is enabled, two-finger passthrough gestures are re-enabled.
`int` | `FLAG_REQUEST_ACCESSIBILITY_BUTTON` This flag indicates to the system that the accessibility service requests that an accessibility button be shown within the system's navigation area, if available.
`int` | `FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY` This constant is deprecated. No longer used
`int` | `FLAG_REQUEST_FILTER_KEY_EVENTS` This flag requests from the system to filter key events.
`int` | `FLAG_REQUEST_FINGERPRINT_GESTURES` This flag requests that all fingerprint gestures be sent to the accessibility service.
`int` | `FLAG_REQUEST_MULTI_FINGER_GESTURES` This flag requests that when when `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is enabled, multi-finger gestures are also enabled.
`int` | `FLAG_REQUEST_SHORTCUT_WARNING_DIALOG_SPOKEN_FEEDBACK` This flag requests that accessibility shortcut warning dialog has spoken feedback when dialog is shown.
`int` | `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` This flag requests that the system gets into touch exploration mode.
`int` | `FLAG_RETRIEVE_INTERACTIVE_WINDOWS` This flag indicates to the system that the accessibility service wants to access content of all interactive windows.
`int` | `FLAG_SEND_MOTION_EVENTS` This flag requests that when when `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is enabled, a service will receive the motion events for each successfully-detected gesture.
`int` | `FLAG_SERVICE_HANDLES_DOUBLE_TAP` This flag requests that when `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is enabled, double tap and double tap and hold gestures are dispatched to the service rather than being handled by the framework.

### Inherited constants
From interface `android.os.Parcelable`
`int` | `CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int` | `PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

### Fields
`public static final Creator<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, in milliseconds, 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
`static String` | `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.
`static String` | `feedbackTypeToString(int feedbackType)` Returns the string representation of a feedback type.
`static String` | `flagToString(int flag)` Returns the string representation of a flag.
`boolean` | `getCanRetrieveWindowContent()` This method is deprecated. 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 is deprecated. Use `loadDescription(android.content.pm.PackageManager)`.
`String` | `getId()` The accessibility service id.
`int` | `getInteractiveUiTimeoutMillis()` Get the recommended timeout for interactive controls.
`int` | `getNonInteractiveUiTimeoutMillis()` Get the recommended timeout for non-interactive controls.
`ResolveInfo` | `getResolveInfo()` The service `ResolveInfo`.
`String` | `getSettingsActivityName()` The settings activity name.
`int` | `hashCode()` Returns a hash code value for the object.
`boolean` | `isAccessibilityTool()` Indicates if the service is used to assist users with disabilities.
`String` | `loadDescription(PackageManager packageManager)` The localized description of the accessibility service.
`CharSequence` | `loadSummary(PackageManager packageManager)` The localized summary of the accessibility service.
`void` | `setInteractiveUiTimeoutMillis(int timeout)` Set the recommended time that interactive controls need to remain on the screen to support the user.
`void` | `setNonInteractiveUiTimeoutMillis(int timeout)` Set the recommended time that non-interactive controls need to remain on the screen to support the user.
`String` | `toString()` Returns a string representation of the object.
`void` | `writeToParcel(Parcel parcel, int flagz)` Flatten this object in to a Parcel.

### 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.
From interface `android.os.Parcelable`
`abstract int` | `describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void` | `writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

## XML attributes

### android:accessibilityEventTypes

The event types this service 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
--- | --- | ---
typeAllMask | ffffffff | Receives `AccessibilityEvent.TYPES_ALL_MASK` i.e. all events.
typeAnnouncement | 4000 | Receives `AccessibilityEvent.TYPE_ANNOUNCEMENT` events.
typeAssistReadingContext | 1000000 | Receives `AccessibilityEvent.TYPE_ASSIST_READING_CONTEXT` events.
typeContextClicked | 800000 | Receives `AccessibilityEvent.TYPE_VIEW_CONTEXT_CLICKED` events.
typeGestureDetectionEnd | 80000 | Receives `AccessibilityEvent.TYPE_GESTURE_DETECTION_END` events.
typeGestureDetectionStart | 40000 | Receives `AccessibilityEvent.TYPE_GESTURE_DETECTION_START` events.
typeNotificationStateChanged | 40 | Receives `AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED` events.
typeTouchExplorationGestureEnd | 400 | Receives `AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_END` events.
typeTouchExplorationGestureStart | 200 | Receives `AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_START` events.
typeTouchInteractionEnd | 200000 | Receives `AccessibilityEvent.TYPE_TOUCH_INTERACTION_END` events.
typeTouchInteractionStart | 100000 | Receives `AccessibilityEvent.TYPE_TOUCH_INTERACTION_START` events.
typeViewAccessibilityFocusCleared | 10000 | Receives `AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED` events.
typeViewAccessibilityFocused | 8000 | Receives `AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED` events.
typeViewClicked | 1 | Receives `AccessibilityEvent.TYPE_VIEW_CLICKED` events.
typeViewFocused | 8 | Receives `AccessibilityEvent.TYPE_VIEW_FOCUSED` events.
typeViewHoverEnter | 80 | Receives `AccessibilityEvent.TYPE_VIEW_HOVER_ENTER` events.
typeViewHoverExit | 100 | Receives `AccessibilityEvent.TYPE_VIEW_HOVER_EXIT` events.
typeViewLongClicked | 2 | Receives `AccessibilityEvent.TYPE_VIEW_LONG_CLICKED` events.
typeViewScrolled | 1000 | Receives `AccessibilityEvent.TYPE_VIEW_SCROLLED` events.
typeViewSelected | 4 | Receives `AccessibilityEvent.TYPE_VIEW_SELECTED` events.
typeViewTextChanged | 10 | Receives `AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED` events.
typeViewTextSelectionChanged | 2000 | Receives `AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED` events.
typeViewTextTraversedAtMovementGranularity | 20000 | Receives `AccessibilityEvent.TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY` events.
typeWindowContentChanged | 800 | Receives `AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED` events.
typeWindowStateChanged | 20 | Receives `AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED` events.
typeWindowsChanged | 400000 | Receives `AccessibilityEvent.TYPE_WINDOWS_CHANGED` events.

### android:accessibilityFeedbackType

The feedback types this service 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
--- | --- | ---
feedbackAllMask | ffffffff | Provides `AccessibilityServiceInfo.FEEDBACK_ALL_MASK` feedback.
feedbackAudible | 4 | Provides `AccessibilityServiceInfo.FEEDBACK_AUDIBLE` feedback.
feedbackGeneric | 10 | Provides `AccessibilityServiceInfo.FEEDBACK_GENERIC` feedback.
feedbackHaptic | 2 | Provides `AccessibilityServiceInfo.FEEDBACK_HAPTIC` feedback.
feedbackSpoken | 1 | Provides `AccessibilityServiceInfo.FEEDBACK_SPOKEN` feedback.
feedbackVisual | 8 | Provides `AccessibilityServiceInfo.FEEDBACK_VISUAL` feedback.

### 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 | 1 | Has flag `AccessibilityServiceInfo.DEFAULT`.
flagEnableAccessibilityVolume | 80 | Has flag `AccessibilityServiceInfo.FLAG_ENABLE_ACCESSIBILITY_VOLUME`.
flagIncludeNotImportantViews | 2 | Has flag `AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS`.
flagReportViewIds | 10 | Has flag `AccessibilityServiceInfo.FLAG_REPORT_VIEW_IDS`.
flagRequestAccessibilityButton | 100 | Has flag `AccessibilityServiceInfo.FLAG_REQUEST_ACCESSIBILITY_BUTTON`.
flagRequestEnhancedWebAccessibility | 8 | Has flag `AccessibilityServiceInfo.FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY`. Not used by the framework.
flagRequestFilterKeyEvents | 20 | Has flag `AccessibilityServiceInfo.FLAG_REQUEST_FILTER_KEY_EVENTS`.
flagRequestFingerprintGestures | 200 | Has flag `AccessibilityServiceInfo.FLAG_REQUEST_FINGERPRINT_GESTURES`.
flagRequestMultiFingerGestures | 1000 | Has flag `AccessibilityServiceInfo.FLAG_REQUEST_MULTI_FINGER_GESTURES`.
flagRequestShortcutWarningDialogSpokenFeedback | 400 | Has flag `AccessibilityServiceInfo.FLAG_REQUEST_SHORTCUT_WARNING_DIALOG_SPOKEN_FEEDBACK`.
flagRequestTouchExplorationMode | 4 | Has flag `AccessibilityServiceInfo.FLAG_REQUEST_TOUCH_EXPLORATION_MODE`.
flagRetrieveInteractiveWindows | 40 | Has flag `AccessibilityServiceInfo.FLAG_RETRIEVE_INTERACTIVE_WINDOWS`.
flagSendMotionEvents | 4000 |
flagServiceHandlesDoubleTap | 800 | Has flag `AccessibilityServiceInfo.FLAG_SERVICE_HANDLES_DOUBLE_TAP`.

### android:canRequestEnhancedWebAccessibility

Attribute whether the accessibility service wants to be able to request enhanced web accessibility enhancements.

May be a boolean value, such as "`true`" or "`false`".

### 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.

May be a boolean value, such as "`true`" or "`false`".

### 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.

May be a boolean value, such as "`true`" or "`false`".

### android:canRetrieveWindowContent

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

Required to allow setting the `#AccessibilityServiceInfo#FLAG_RETRIEVE_INTERACTIVE_WINDOWS` flag.

May be a boolean value, such as "`true`" or "`false`".

### android:canTakeScreenshot

Attribute whether the accessibility service wants to be able to take screenshot.

May be a boolean value, such as "`true`" or "`false`".

### android:description

Short description of the accessibility service purpose or behavior.

May be a reference to another resource, in the form "`@[+][package:]type/name`" or a theme attribute in the form "`?[package:]type/name`".

### android:interactiveUiTimeout

A recommended timeout in milliseconds used in `android.view.accessibility.AccessibilityManager.getRecommendedTimeoutMillis(int, int)` to return a suitable value for interactive controls. This setting can be changed at runtime by calling `android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)`.

May be an integer value, such as "`100`".

### android:nonInteractiveUiTimeout

A recommended timeout in milliseconds used in `android.view.accessibility.AccessibilityManager.getRecommendedTimeoutMillis(int, int)` to return a suitable value for UIs that do not include interactive controls. This setting can be changed at runtime by calling `android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)`.

May be an integer value, such as "`100`".

### android:notificationTimeout

The minimal period in milliseconds between two accessibility events of the same type are sent to this service. This setting can be changed at runtime by calling `android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)`.

May be an integer value, such as "`100`".

### android:packageNames

Comma separated package names from which this service would like to receive events (leave out for all packages). `android.accessibilityservice.AccessibilityService.setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo)`.

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

### 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.

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

### android:summary

Brief summary of the accessibility service purpose or behavior.

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

## Constants

### CAPABILITY_CAN_CONTROL_MAGNIFICATION

    public static final int CAPABILITY_CAN_CONTROL_MAGNIFICATION

Capability: This accessibility service can control display magnification.

See also:

- `R.styleable.AccessibilityService_canControlMagnification`

Constant Value: 16 (0x00000010)

### CAPABILITY_CAN_PERFORM_GESTURES

    public static final int CAPABILITY_CAN_PERFORM_GESTURES

Capability: This accessibility service can perform gestures.

See also:

- `R.styleable.AccessibilityService_canPerformGestures`

Constant Value: 32 (0x00000020)

### CAPABILITY_CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY

    public static final int CAPABILITY_CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY

This constant is deprecated.
No longer used

Constant Value: 4 (0x00000004)

### CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS

    public static final int CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS

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

See also:

- `R.styleable.AccessibilityService_canRequestFilterKeyEvents`

Constant Value: 8 (0x00000008)

### CAPABILITY_CAN_REQUEST_FINGERPRINT_GESTURES

    public static final int CAPABILITY_CAN_REQUEST_FINGERPRINT_GESTURES

Capability: This accessibility service can capture gestures from the fingerprint sensor

See also:

- `R.styleable.AccessibilityService_canRequestFingerprintGestures`

Constant Value: 64 (0x00000040)

### CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION

    public static final 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.

See also:

- `R.styleable.AccessibilityService_canRequestTouchExplorationMode`

Constant Value: 2 (0x00000002)

### CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT

    public static final int CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT

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

See also:

- `R.styleable.AccessibilityService_canRetrieveWindowContent`

Constant Value: 1 (0x00000001)

### CAPABILITY_CAN_TAKE_SCREENSHOT

    public static final int CAPABILITY_CAN_TAKE_SCREENSHOT

Capability: This accessibility service can take screenshot.

See also:

- `R.styleable.AccessibilityService_canTakeScreenshot`

Constant Value: 128 (0x00000080)

### DEFAULT

    public static final int DEFAULT

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

    public static final int FEEDBACK_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

    public static final int FEEDBACK_AUDIBLE

Denotes audible (not spoken) feedback.

Constant Value: 4 (0x00000004)

### FEEDBACK_BRAILLE

    public static final int FEEDBACK_BRAILLE

Denotes braille feedback.

Constant Value: 32 (0x00000020)

### FEEDBACK_GENERIC

    public static final int FEEDBACK_GENERIC

Denotes generic feedback.

Constant Value: 16 (0x00000010)

### FEEDBACK_HAPTIC

    public static final int FEEDBACK_HAPTIC

Denotes haptic feedback.

Constant Value: 2 (0x00000002)

### FEEDBACK_SPOKEN

    public static final int FEEDBACK_SPOKEN

Denotes spoken feedback.

Constant Value: 1 (0x00000001)

### FEEDBACK_VISUAL

    public static final int FEEDBACK_VISUAL

Denotes visual feedback.

Constant Value: 8 (0x00000008)

### FLAG_ENABLE_ACCESSIBILITY_VOLUME

    public static final int FLAG_ENABLE_ACCESSIBILITY_VOLUME

This flag requests that all audio tracks system-wide with `AudioAttributes.USAGE_ASSISTANCE_ACCESSIBILITY` be controlled by the `AudioManager.STREAM_ACCESSIBILITY` volume.

Constant Value: 128 (0x00000080)

### FLAG_INCLUDE_NOT_IMPORTANT_VIEWS

    public static final int FLAG_INCLUDE_NOT_IMPORTANT_VIEWS

If this flag is 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 `View#IMPORTANT_FOR_ACCESSIBILITY_NO` or `View#IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS` and views that are marked as potentially important for accessibility via `View#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 Android 4.1 (API level 16) or higher, this flag has to be explicitly set for the system to regard views that are not important for accessibility. For accessibility services targeting Android 4.0.4 (API level 15) or lower, this flag is 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 managers 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

    public static final int FLAG_REPORT_VIEW_IDS

This flag requests 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 flag is not set by default.

Constant Value: 16 (0x00000010)

### FLAG_REQUEST_2_FINGER_PASSTHROUGH

    public static final int FLAG_REQUEST_2_FINGER_PASSTHROUGH

This flag requests that when when `FLAG_REQUEST_MULTI_FINGER_GESTURES` is enabled, two-finger passthrough gestures are re-enabled. Two-finger swipe gestures are not detected, but instead passed through as one-finger gestures. In addition, three-finger swipes from the bottom of the screen are not detected, and instead are passed through unchanged. If `FLAG_REQUEST_MULTI_FINGER_GESTURES` is disabled this flag has no effect.

See also:

- `FLAG_REQUEST_TOUCH_EXPLORATION_MODE`

Constant Value: 8192 (0x00002000)

### FLAG_REQUEST_ACCESSIBILITY_BUTTON

    public static final int FLAG_REQUEST_ACCESSIBILITY_BUTTON

This flag indicates to the system that the accessibility service requests that an accessibility button be shown within the system's navigation area, if available.

Note: For accessibility services targeting APIs greater than `API 29`, this flag must be specified in the accessibility service metadata file. Otherwise, it will be ignored.

Constant Value: 256 (0x00000100)

### FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY

    public static final int FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY

This constant is deprecated.
No longer used

Constant Value: 8 (0x00000008)

### FLAG_REQUEST_FILTER_KEY_EVENTS

    public static final int FLAG_REQUEST_FILTER_KEY_EVENTS

This flag requests from the system to filter key events. If this flag is set the accessibility service will receive the key events before applications allowing it implement global shortcuts.

Services that want to set this flag have to declare this capability in their meta-data by setting the attribute `#canRequestFilterKeyEvents canRequestFilterKeyEvents` to true, otherwise this flag will be ignored. For how to declare the meta-data of a service refer to `android.accessibilityservice.AccessibilityService.SERVICE_META_DATA AccessibilityService.SERVICE_META_DATA`.

See also:

- `R.styleable.AccessibilityService_canRequestFilterKeyEvents`

Constant Value: 32 (0x00000020)

### FLAG_REQUEST_FINGERPRINT_GESTURES

    public static final int FLAG_REQUEST_FINGERPRINT_GESTURES

This flag requests that all fingerprint gestures be sent to the accessibility service.

Services that want to set this flag have to declare the capability to retrieve window content in their meta-data by setting the attribute `R.attr.canRequestFingerprintGestures` to true, otherwise this flag will be ignored. For how to declare the meta-data of a service refer to `android.accessibilityservice.AccessibilityService.SERVICE_META_DATA AccessibilityService.SERVICE_META_DATA`.

See also:

- `R.styleable.AccessibilityService_canRequestFingerprintGestures`
- `AccessibilityService.getFingerprintGestureController()`

Constant Value: 512 (0x00000200)

### FLAG_REQUEST_MULTI_FINGER_GESTURES

    public static final int FLAG_REQUEST_MULTI_FINGER_GESTURES

This flag requests that when when `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is enabled, multi-finger gestures are also enabled. As a consequence, two-finger bypass gestures will be disabled. If `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is disabled this flag has no effect.

See also:

- `FLAG_REQUEST_TOUCH_EXPLORATION_MODE`

Constant Value: 4096 (0x00001000)

### FLAG_REQUEST_SHORTCUT_WARNING_DIALOG_SPOKEN_FEEDBACK

    public static final int FLAG_REQUEST_SHORTCUT_WARNING_DIALOG_SPOKEN_FEEDBACK

This flag requests that accessibility shortcut warning dialog has spoken feedback when dialog is shown.

Constant Value: 1024 (0x00000400)

### FLAG_REQUEST_TOUCH_EXPLORATION_MODE

    public static final int FLAG_REQUEST_TOUCH_EXPLORATION_MODE

This flag requests 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 flag set. Hence, clearing this flag does 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 Android 4.3 (API level 18) or higher that want to set this flag have to declare this capability in their meta-data by setting the attribute `canRequestTouchExplorationMode` to true. Otherwise, this flag will be ignored. For how to declare the meta-data of a service refer to `android.accessibilityservice.AccessibilityService.SERVICE_META_DATA AccessibilityService.SERVICE_META_DATA`.

Services targeting Android 4.2.2 (API level 17) or lower will work normally. In other words, the first time they are run, if this flag is specified, a dialog is shown to the user to confirm enabling explore by touch.

See also:

- `R.styleable.AccessibilityService_canRequestTouchExplorationMode`

Constant Value: 4 (0x00000004)

### FLAG_RETRIEVE_INTERACTIVE_WINDOWS

    public static final int FLAG_RETRIEVE_INTERACTIVE_WINDOWS

This flag indicates 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 flag is not set your service will not receive `AccessibilityEvent.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 flag have to declare the capability to retrieve window content in their meta-data by setting the attribute `canRetrieveWindowContent` to true, otherwise this flag will be ignored. For how to declare the meta-data of a service refer to `android.accessibilityservice.AccessibilityService.SERVICE_META_DATA AccessibilityService.SERVICE_META_DATA`.

See also:

- `R.styleable.AccessibilityService_canRetrieveWindowContent`

Constant Value: 64 (0x00000040)

### FLAG_SEND_MOTION_EVENTS

    public static final int FLAG_SEND_MOTION_EVENTS

This flag requests that when when `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is enabled, a service will receive the motion events for each successfully-detected gesture. The service will also receive an AccessibilityGestureEvent of type GESTURE_INVALID for each cancelled gesture along with its motion events. A service will receive a gesture of type GESTURE_PASSTHROUGH and accompanying motion events for every passthrough gesture that does not start gesture detection. This information can be used to collect instances of improper gesture detection behavior and relay that information to framework developers. If `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is disabled this flag has no effect.

See also:

- `FLAG_REQUEST_TOUCH_EXPLORATION_MODE`

Constant Value: 16384 (0x00004000)

### FLAG_SERVICE_HANDLES_DOUBLE_TAP

    public static final int FLAG_SERVICE_HANDLES_DOUBLE_TAP

This flag requests that when `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is enabled, double tap and double tap and hold gestures are dispatched to the service rather than being handled by the framework. If `FLAG_REQUEST_TOUCH_EXPLORATION_MODE` is disabled this flag has no effect.

See also:

- `FLAG_REQUEST_TOUCH_EXPLORATION_MODE`

Constant Value: 2048 (0x00000800)

## Fields

### CREATOR

    public static final Creator<AccessibilityServiceInfo> CREATOR

See also:

- `Parcelable.Creator`

### eventTypes

    public int eventTypes

The event types an `AccessibilityService` is interested in.

Can be dynamically set at runtime.

See also:

- `AccessibilityEvent.TYPE_VIEW_CLICKED`
- `AccessibilityEvent.TYPE_VIEW_LONG_CLICKED`
- `AccessibilityEvent.TYPE_VIEW_FOCUSED`
- `AccessibilityEvent.TYPE_VIEW_SELECTED`
- `AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED`
- `AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED`
- `AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED`
- `AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_START`
- `AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_END`
- `AccessibilityEvent.TYPE_VIEW_HOVER_ENTER`
- `AccessibilityEvent.TYPE_VIEW_HOVER_EXIT`
- `AccessibilityEvent.TYPE_VIEW_SCROLLED`
- `AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED`
- `AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED`
- `AccessibilityEvent.TYPE_TOUCH_INTERACTION_START`
- `AccessibilityEvent.TYPE_TOUCH_INTERACTION_END`
- `AccessibilityEvent.TYPE_ANNOUNCEMENT`
- `AccessibilityEvent.TYPE_GESTURE_DETECTION_START`
- `AccessibilityEvent.TYPE_GESTURE_DETECTION_END`
- `AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED`
- `AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED`
- `AccessibilityEvent.TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY`
- `AccessibilityEvent.TYPE_WINDOWS_CHANGED`

### feedbackType

    public int feedbackType

The feedback type an `AccessibilityService` provides.

Can be dynamically set at runtime.

Value is either `0` or a combination of `FEEDBACK_AUDIBLE`, `FEEDBACK_GENERIC`, `FEEDBACK_HAPTIC`, `FEEDBACK_SPOKEN`, `FEEDBACK_VISUAL`, and `FEEDBACK_BRAILLE`

See also:

- `FEEDBACK_AUDIBLE`
- `FEEDBACK_GENERIC`
- `FEEDBACK_HAPTIC`
- `FEEDBACK_SPOKEN`
- `FEEDBACK_VISUAL`
- `FEEDBACK_BRAILLE`

### flags

    public int flags

This field represents a set of flags used for configuring an `AccessibilityService`.

Can be dynamically set at runtime.

Note: Accessibility services with targetSdkVersion greater than `API 29` cannot dynamically set the `FLAG_REQUEST_ACCESSIBILITY_BUTTON` at runtime. It must be specified in the accessibility service metadata file.

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`
- `FLAG_ENABLE_ACCESSIBILITY_VOLUME`
- `FLAG_REQUEST_ACCESSIBILITY_BUTTON`
- `FLAG_REQUEST_SHORTCUT_WARNING_DIALOG_SPOKEN_FEEDBACK`

### notificationTimeout

    public long notificationTimeout

The timeout, in milliseconds, 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

    public 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

    public AccessibilityServiceInfo ()

Creates a new instance.

## Public methods

### capabilityToString

    public static String capabilityToString (int capability)

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

    public int describeContents ()

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(android.os.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. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

### equals

    public boolean equals (Object obj)

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

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

- 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`: This value may be `null`.

Returns
`boolean` | `true` if this object is the same as the obj argument; `false` otherwise.

### feedbackTypeToString

    public static String feedbackTypeToString (int feedbackType)

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

    public static String flagToString (int flag)

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

    public boolean getCanRetrieveWindowContent ()

This method is deprecated.
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

    public int getCapabilities ()

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

Returns
`int` | The capability bit mask.

See also:

- `CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT`
- `CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION`
- `CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS`
- `CAPABILITY_CAN_CONTROL_MAGNIFICATION`
- `CAPABILITY_CAN_PERFORM_GESTURES`
- `CAPABILITY_CAN_TAKE_SCREENSHOT`

### getDescription

    public String getDescription ()

This method is deprecated.
Use `loadDescription(android.content.pm.PackageManager)`.

Gets the non-localized description of the accessibility service.

Statically set from `meta-data`.

Returns
`String` | The description.

### getId

    public String getId ()

The accessibility service id.

Generated by the system.

Returns
`String` | The id.

### getInteractiveUiTimeoutMillis

    public int getInteractiveUiTimeoutMillis ()

Get the recommended timeout for interactive controls.

Returns
`int` | The timeout in milliseconds.

See also:

- `setInteractiveUiTimeoutMillis(int)`

### getNonInteractiveUiTimeoutMillis

    public int getNonInteractiveUiTimeoutMillis ()

Get the recommended timeout for non-interactive controls.

Returns
`int` | The timeout in milliseconds.

See also:

- `setNonInteractiveUiTimeoutMillis(int)`

### getResolveInfo

    public ResolveInfo getResolveInfo ()

The service `ResolveInfo`.

Generated by the system.

Returns
`ResolveInfo` | The info.

### getSettingsActivityName

    public String getSettingsActivityName ()

The settings activity name.

Statically set from `meta-data`.

Returns
`String` | The settings activity name.

### hashCode

    public int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by `HashMap`.

The general contract of `hashCode` is:

- 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 Java™ programming language.)

Returns
`int` | a hash code value for this object.

### isAccessibilityTool

    public boolean isAccessibilityTool ()

Indicates if the service is used to assist users with disabilities.

Returns
`boolean` | `true` if the property is set to true.

### loadDescription

    public String loadDescription (PackageManager packageManager)

The localized description of the accessibility service.

Statically set from `meta-data`.

Parameters
`packageManager` | `PackageManager`

Returns
`String` | The localized description.

### loadSummary

    public CharSequence loadSummary (PackageManager packageManager)

The localized summary of the accessibility service.

Statically set from `meta-data`.

Parameters
`packageManager` | `PackageManager`

Returns
`CharSequence` | The localized summary if available, and `null` if a summary has not been provided.

### setInteractiveUiTimeoutMillis

    public void setInteractiveUiTimeoutMillis (int timeout)

Set the recommended time that interactive controls need to remain on the screen to support the user.

This value can be dynamically set at runtime by `AccessibilityService#setServiceInfo(AccessibilityServiceInfo)`.

Parameters
`timeout` | `int`: The timeout in milliseconds. Value is 0 or greater

See also:

- `R.styleable.AccessibilityService_interactiveUiTimeout`

### setNonInteractiveUiTimeoutMillis

    public void setNonInteractiveUiTimeoutMillis (int timeout)

Set the recommended time that non-interactive controls need to remain on the screen to support the user.

This value can be dynamically set at runtime by `AccessibilityService#setServiceInfo(AccessibilityServiceInfo)`.

Parameters
`timeout` | `int`: The timeout in milliseconds. Value is 0 or greater

See also:

- `R.styleable.AccessibilityService_nonInteractiveUiTimeout`

### 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.

### writeToParcel

    public void writeToParcel (Parcel parcel,
                    int flagz)

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.PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES

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