Native Accessibility

Overview

Describes the APIs for third-party platforms to access the ArkUI accessibility framework through XComponent, that is, the APIs that third-party platforms need to implement, as well as related structs and enums.

NOTE

The APIs of this module are supported since API version 13. Updates will be marked with a superscript to indicate their earliest API version.

Summary

Files

Name	Description
native_interface_accessibility.h	Declares the APIs for accessing the native Accessibility.

Types

Name	Description
ArkUI_AccessibilityElementInfo	Provides accessibility node information, which is used to transfer node information to accessibility services and applications.
ArkUI_AccessibilityElementInfoList	Defines an accessibility node list, which contains required accessibility node information.
ArkUI_AccessibilityEventInfo	Provides accessibility event information. After a component completes an action requested by an accessibility service or application, it needs to send a success event to confirm the operation. Similarly, if the component needs to synchronize its state change with the accessibility service or application due to its own interactive behavior, it should actively trigger an event to communicate the change.
ArkUI_AccessibilityProvider	Defines a third-party accessibility provider, which carries callback function implementations.
ArkUI_AccessibilityProviderCallbacks	Defines a struct for third-party accessibility provider callback functions, which third-party platforms need to implement. These functions are registered with the system side through OH_ArkUI_AccessibilityProviderRegisterCallback.
ArkUI_AccessibilityActionArguments	Provides additional information of the action to be executed.
ArkUI_AccessibleRect	Provides the coordinate position where the node is located.
ArkUI_AccessibleRangeInfo	Sets the current value, maximum value, and minimum value in the component attributes. Used by specific components, such as Slider, Rating, and Progress.
ArkUI_AccessibleGridInfo	Sets the number of rows, number of columns, and selection mode of the component. Used by specific components, such as List, Flex, Select, and Swiper.
ArkUI_AccessibleGridItemInfo	Sets the attribute values of component items. Used by specific components, such as List, Flex, Select, and Swiper.
ArkUI_AccessibleAction	Defines a struct for accessibility operation content.

Enums

Name	Description
ArkUI_AcessbilityErrorCode	Enumerates the error codes.
ArkUI_AccessibilitySearchMode	Enumerates the search modes.
ArkUI_AccessibilityFocusType	Enumerates the focus types.
ArkUI_Accessibility_ActionType	Enumerates the action types.
ArkUI_AccessibilityEventType	Enumerates the event types.
ArkUI_AccessibilityFocusMoveDirection	Enumerates the focus movement directions.

Type Description

ArkUI_AccessibilityElementInfo

typedef struct ArkUI_AccessibilityElementInfo ArkUI_AccessibilityElementInfo

Description

Provides accessibility node information, which is used to transfer node information to accessibility services and applications.

Since

13

ArkUI_AccessibilityElementInfoList

typedef struct ArkUI_AccessibilityElementInfoList ArkUI_AccessibilityElementInfoList

Description

Defines an accessibility node list, which contains required accessibility node information.

Since

13

ArkUI_AccessibilityEventInfo

typedef struct ArkUI_AccessibilityEventInfo ArkUI_AccessibilityEventInfo

Description

Provides accessibility event information. After a component completes an action requested by an accessibility service or application, it needs to send a success event to confirm the operation. Similarly, if the component needs to synchronize its state change with the accessibility service or application due to its own interactive behavior, it should actively trigger an event to communicate the change.

Since

13

ArkUI_AccessibilityProvider

typedef struct ArkUI_AccessibilityProvider ArkUI_AccessibilityProvider

Description

Defines a third-party accessibility provider, which carries callback function implementations.

Since

13

ArkUI_AccessibilityProviderCallbacks

typedef struct ArkUI_AccessibilityProviderCallbacks {
    int32_t (*findAccessibilityNodeInfosById)(int64_t elementId, ArkUI_AccessibilitySearchMode mode, int32_t requestId, ArkUI_AccessibilityElementInfoList* elementList);
    int32_t (*findAccessibilityNodeInfosByText)(int64_t elementId, const char* text, int32_t requestId, ArkUI_AccessibilityElementInfoList* elementList);
    int32_t (*findFocusedAccessibilityNode)(int64_t elementId, ArkUI_AccessibilityFocusType focusType, int32_t requestId, ArkUI_AccessibilityElementInfo* elementinfo);
    int32_t (*findNextFocusAccessibilityNode)(int64_t elementId, ArkUI_AccessibilityFocusMoveDirection direction, int32_t requestId, ArkUI_AccessibilityElementInfo* elementList);
    int32_t (*executeAccessibilityAction)(int64_t elementId, ArkUI_Accessibility_ActionType action, ArkUI_AccessibilityActionArguments *actionArguments, int32_t requestId);
    int32_t (*clearFocusedFocusAccessibilityNode)();
    int32_t (*getAccessibilityNodeCursorPosition)(int64_t elementId, int32_t requestId, int32_t* index);
} ArkUI_AccessibilityProviderCallbacks;

Description

Defines a struct for third-party accessibility provider callback functions, which third-party platforms need to implement. These functions are registered with the system side through OH_ArkUI_AccessibilityProviderRegisterCallback.

Name	Description
findAccessibilityNodeInfosById	Finds the information about an accessibility node based on the specified node ID.
findAccessibilityNodeInfosByText	Finds the nodes that contain specific text content.
findFocusedAccessibilityNode	Finds the node that currently has focus within a given node.
findNextFocusAccessibilityNode	Finds the next node in a specified direction from a given node.
executeAccessibilityAction	Performs a specified action on a specified node.
clearFocusedFocusAccessibilityNode	Removes focus from the current node.
getAccessibilityNodeCursorPosition	Obtains the cursor position within a text component of the current accessibility node.

Since

13

ArkUI_AccessibilityActionArguments

Description

Provides additional information of the action to be executed.

Since

13

ArkUI_AccessibleRect

Description

Provides the coordinate position where the node is located.

Parameters

Name	Type	Description
leftTopX	int32	X coordinate of the upper left corner.
leftTopY	int32	Y coordinate of the upper left corner.
rightBottomX	int32	X coordinate of the lower right corner.
rightBottomY	int32	Y coordinate of the lower right corner.

Since

13

ArkUI_AccessibleRangeInfo

Description

Sets the current value, maximum value, and minimum value in the component attributes. Used by specific components, such as Slider, Rating, and Progress.

Parameters

Name	Type	Description
min	double	Minimum value.
max	double	Maximum value.
current	double	Current value.

Since

13

ArkUI_AccessibleGridInfo

Description

Sets the number of rows, number of columns, and selection mode of the component. Used by specific components, such as List, Flex, Select, and Swiper.

Parameters

Name	Type	Description
rowCount	int32	Number of columns.
columnCount	int32	Number of rows.
selectionMode	int32	Selection mode.

Since

13

ArkUI_AccessibleGridItemInfo

Description

Sets the attribute values of component items. Used by specific components, such as List, Flex, Select, and Swiper.

Parameters

Name	Type	Description
heading	bool	Whether the item is a heading.
selected	bool	Whether the item is selected.
columnIndex	int32	Column index of the item.
rowIndex	int32	Row index of the item.
columnSpan	int32	Number of columns that the item spans.
rowSpan	int32	Number of rows that the item spans.

Since

13

ArkUI_AccessibleAction

Description

Defines a struct for the accessibility action.

Parameters

Name	Type	Description
actionType	ArkUI_Accessibility_ActionType	Accessibility action type.
description	char*	Description.

Since

13

Function Description

findAccessibilityNodeInfosById

int32_t (*findAccessibilityNodeInfosById)(int64_t elementId, ArkUI_AccessibilitySearchMode mode, int32_t requestId, ArkUI_AccessibilityElementInfoList* elementList);

Description

Finds the information about an accessibility node based on the specified node ID. This function should be implemented by the third-party platform and registered for the system to call.

Since: 13

Parameters

Name	Description
elementId	ID of the node from which to start the search. If the value is -1, the search starts from the root node of the component tree.
mode	Search mode. The following are supported: ArkUI_AccessibilitySearchMode.
requestId	Request ID, which is used to identify the request process and facilitate fault locating. It is recommended that third-party platforms include this ID in their key log outputs for debugging purposes.
elementList	Search result, which the third-party platform returns based on the search.

Returns

ArkUI_AcessbilityErrorCode

findAccessibilityNodeInfosByText

int32_t (*findAccessibilityNodeInfosByText)(int64_t elementId, const char* text, int32_t requestId, ArkUI_AccessibilityElementInfoList* elementList);

Description

This function should be implemented by the third-party platform and registered for the system to call. Finds the nodes that contain specific text content.

Since: 13

Parameters

Name	Description
elementId	ID of the node from which to start the search. If the value is -1, the search starts from the root node of the component tree.
text	Text to match against the accessibility text content of the nodes.
requestId	Request ID, which is used to identify the request process and facilitate fault locating. It is recommended that third-party platforms include this ID in their key log outputs for debugging purposes.
elementList	Search result, which the third-party platform returns based on the search.

Returns

ArkUI_AcessbilityErrorCode

findFocusedAccessibilityNode

int32_t (*findFocusedAccessibilityNode)(int64_t elementId, ArkUI_AccessibilityFocusType focusType, int32_t requestId, ArkUI_AccessibilityElementInfo* elementinfo);

Description

This function should be implemented by the third-party platform and registered for the system to call. Finds the node that currently has focus within a given node.

Since: 13

Parameters

Name	Description
elementId	ID of the node from which to start the search. If the value is -1, the search starts from the root node of the component tree.
focusType	Type of accessibility focus, as defined in ArkUI_AccessibilityFocusType.
requestId	Request ID, which is used to identify the request process and facilitate fault locating. It is recommended that third-party platforms include this ID in their key log outputs for debugging purposes.
elementList	Search result, which the third-party platform returns based on the search.

Returns

ArkUI_AcessbilityErrorCode

findNextFocusAccessibilityNode

int32_t (*findNextFocusAccessibilityNode)(int64_t elementId, ArkUI_AccessibilityFocusMoveDirection direction, int32_t requestId, ArkUI_AccessibilityElementInfo* elementList);

Description

This function should be implemented by the third-party platform and registered for the system to call. Finds the next node in a specified direction from a given node.

Since: 13

Parameters

Name	Description
elementId	ID of the node from which to start the search. If the value is -1, the search starts from the root node of the component tree.
focusType	Type of accessibility focus, as defined in ArkUI_AccessibilityFocusType.
requestId	Request ID, which is used to identify the request process and facilitate fault locating. It is recommended that third-party platforms include this ID in their key log outputs for debugging purposes.
elementList	Search result, which the third-party platform returns based on the search.

Returns

ArkUI_AcessbilityErrorCode

executeAccessibilityAction

int32_t (*executeAccessibilityAction)(int64_t elementId, ArkUI_Accessibility_ActionType action, ArkUI_AccessibilityActionArguments *actionArguments, int32_t requestId);

Description

This function should be implemented by the third-party platform and registered for the system to call. Performs a specified action on a specified node.

Since: 13

Parameters

Name	Description
elementId	ID of the specified node.
action	Type of action to be performed, as defined in ArkUI_Accessibility_ActionType.
requestId	Request ID, which is used to identify the request process and facilitate fault locating. It is recommended that third-party platforms include this ID in their key log outputs for debugging purposes.
actionArguments	Additional information of the action.

Returns

ArkUI_AcessbilityErrorCode

clearFocusedFocusAccessibilityNode

int32_t (*clearFocusedFocusAccessibilityNode)();

Description

This function should be implemented by the third-party platform and registered for the system to call. Removes focus from this node.

Since: 13

Input parameter: none

Returns

ArkUI_AcessbilityErrorCode

getAccessibilityNodeCursorPosition

int32_t (*getAccessibilityNodeCursorPosition)(int64_t elementId, int32_t requestId, int32_t* index);

Description

This function should be implemented by the third-party platform and registered for the system to call. Obtains the cursor position within a text component of the current accessibility node.

Since: 13

Parameters

Name	Description
elementId	ID of the specified node.
requestId	Request ID, which is used to identify the request process and facilitate fault locating. It is recommended that third-party platforms include this ID in their key log outputs for debugging purposes.
index	Parameter where the cursor position result is returned.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityProviderRegisterCallback

int32_t OH_ArkUI_AccessibilityProviderRegisterCallback(
    ArkUI_AccessibilityProvider* provider, ArkUI_AccessibilityProviderCallbacks* callbacks);

Description

Registers callback functions.

Since: 13

Parameters

Name	Description
provider	Handle to the provider of the third-party platform.
callbacks	Implementation of the callback functions.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_SendAccessibilityAsyncEvent

void OH_ArkUI_SendAccessibilityAsyncEvent(
    ArkUI_AccessibilityProvider* provider, ArkUI_AccessibilityEventInfo* eventInfo, void (*callback)(int32_t errorCode));

Description

Proactively sends an event to notify the accessibility service.

Since: 13

Parameters

Name	Description
provider	Handle to the provider of the third-party platform.
eventInfo	Event to send.
callback	Callback for the returned result.

Returns: none

OH_ArkUI_CreateAccessibilityElementInfo

ArkUI_AccessibilityElementInfo* OH_ArkUI_CreateAccessibilityElementInfo(void);

Description

Creates an ArkUI_AccessibilityElementInfo struct. After creation, you must call OH_ArkUI_DestoryAccessibilityElementInfo to release it.

Since: 13

Returns

Returns the pointer to the created ArkUI_AccessibilityElementInfo struct; returns NULL if creation fails.

OH_ArkUI_DestoryAccessibilityElementInfo

void OH_ArkUI_DestoryAccessibilityElementInfo(ArkUI_AccessibilityElementInfo* elementInfo);

Description

Destroys an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to the ArkUI_AccessibilityElementInfo struct to be destroyed.

Returns: none

OH_ArkUI_AddAndGetAccessibilityElementInfo

ArkUI_AccessibilityElementInfo* OH_ArkUI_AddAndGetAccessibilityElementInfo(ArkUI_AccessibilityElementInfoList* list);

Description

Adds an ArkUI_AccessibilityElementInfo member to the specified list and returns the ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
list	ArkUI_AccessibilityElementInfoList struct to which the new ArkUI_AccessibilityElementInfo member is added and then returned to the function caller.

Returns

Returns the pointer to the ArkUI_AccessibilityElementInfo struct; returns NULL if the operation fails.

OH_ArkUI_AccessibilityElementInfoSetElementId

int32_t OH_ArkUI_AccessibilityElementInfoSetElementId(ArkUI_AccessibilityElementInfo* elementInfo, int32_t elementId);

Description

Sets the ID for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
elementId	ID to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetParentId

int32_t OH_ArkUI_AccessibilityElementInfoSetParentId(ArkUI_AccessibilityElementInfo* elementInfo, int32_t parentId);

Description

Sets the parent ID for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
parentId	Parent ID to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetComponentType

int32_t OH_ArkUI_AccessibilityElementInfoSetComponentType(ArkUI_AccessibilityElementInfo* elementInfo, const char* componentType);

Description

Sets the component type for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
componentType	Component type to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetContents

int32_t OH_ArkUI_AccessibilityElementInfoSetContents(ArkUI_AccessibilityElementInfo* elementInfo, const char* contents);

Description

Sets the component content for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
contents	Component content to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetHintText

int32_t OH_ArkUI_AccessibilityElementInfoSetHintText(ArkUI_AccessibilityElementInfo* elementInfo, const char* hintText);

Description

Sets the hint text for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
hintText	Hint text to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetAccessibilityText

int32_t OH_ArkUI_AccessibilityElementInfoSetAccessibilityText(ArkUI_AccessibilityElementInfo* elementInfo, const char* accessibilityText);

Description

Sets the accessibility text for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
accessibilityText	Accessibility text to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetAccessibilityDescription

int32_t OH_ArkUI_AccessibilityElementInfoSetAccessibilityDescription(ArkUI_AccessibilityElementInfo* elementInfo, const char* accessibilityDescription);

Description

Sets the accessibility description for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
accessibilityDescription	Accessibility description to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetChildNodeIds

int32_t OH_ArkUI_AccessibilityElementInfoSetChildNodeIds(ArkUI_AccessibilityElementInfo* elementInfo, int32_t childCount, int64_t* childNodeIds);

Description

Sets the number of child nodes and child node IDs for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
childCount	Number of child nodes.
childNodeIds	Array of child node IDs.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetOperationActions

int32_t OH_ArkUI_AccessibilityElementInfoSetOperationActions(ArkUI_AccessibilityElementInfo* elementInfo, int32_t operationCount, ArkUI_AccessibleAction* operationActions);

Description

Sets the number of actions and the actions themselves for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
operationCount	Number of actions supported by the component.
operationActions	Array of actions supported by the component.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetScreenRect

int32_t OH_ArkUI_AccessibilityElementInfoSetScreenRect(ArkUI_AccessibilityElementInfo* elementInfo, ArkUI_AccessibleRect* screenRect);

Description

Sets the screen rectangle for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
screenRect	Screen rectangle to set.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetCheckable

int32_t OH_ArkUI_AccessibilityElementInfoSetCheckable(ArkUI_AccessibilityElementInfo* elementInfo, bool checkable);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is checkable.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
checkable	Whether the element is checkable.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetChecked

int32_t OH_ArkUI_AccessibilityElementInfoSetChecked(ArkUI_AccessibilityElementInfo* elementInfo, bool checked);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is checked.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
checked	Whether the element is checked.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetFocusable

int32_t OH_ArkUI_AccessibilityElementInfoSetFocusable(ArkUI_AccessibilityElementInfo* elementInfo, bool focusable);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is focusable.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
focusable	Whether the element is focusable.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetFocused

int32_t OH_ArkUI_AccessibilityElementInfoSetFocused(ArkUI_AccessibilityElementInfo* elementInfo, bool isFocused);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is focused.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
isFocused	Whether the element is focused.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetVisible

int32_t OH_ArkUI_AccessibilityElementInfoSetVisible(ArkUI_AccessibilityElementInfo* elementInfo, bool isVisible);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is visible.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
isVisible	Whether the element is visible.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetAccessibilityFocused

int32_t OH_ArkUI_AccessibilityElementInfoSetAccessibilityFocused(ArkUI_AccessibilityElementInfo* elementInfo, bool accessibilityFocused);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is focused for accessibility purposes.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
accessibilityFocused	Whether the element is focused for accessibility purposes.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetSelected

int32_t OH_ArkUI_AccessibilityElementInfoSetSelected(ArkUI_AccessibilityElementInfo* elementInfo, bool selected);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is selected.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
selected	Whether the element is selected.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetClickable

int32_t OH_ArkUI_AccessibilityElementInfoSetClickable(ArkUI_AccessibilityElementInfo* elementInfo, bool clickable);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is clickable.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
clickable	Whether the element is clickable.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetLongClickable

int32_t OH_ArkUI_AccessibilityElementInfoSetLongClickable(ArkUI_AccessibilityElementInfo* elementInfo, bool longClickable);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is long-clickable.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
longClickable	Whether the element is long-clickable.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetEnabled

int32_t OH_ArkUI_AccessibilityElementInfoSetEnabled(ArkUI_AccessibilityElementInfo* elementInfo, bool isEnabled);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is enabled.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
isEnabled	Whether the element is enabled.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetIsPassword

int32_t OH_ArkUI_AccessibilityElementInfoSetIsPassword(ArkUI_AccessibilityElementInfo* elementInfo, bool isPassword);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is a password.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
isPassword	Whether the element is a password.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetScrollable

int32_t OH_ArkUI_AccessibilityElementInfoSetScrollable(ArkUI_AccessibilityElementInfo* elementInfo, bool scrollable);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is scrollable.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
scrollable	Whether the element is scrollable.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetEditable

int32_t OH_ArkUI_AccessibilityElementInfoSetEditable(ArkUI_AccessibilityElementInfo* elementInfo, bool editable);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is editable.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
editable	Whether the element is editable.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetIsHint

int32_t OH_ArkUI_AccessibilityElementInfoSetIsHint(ArkUI_AccessibilityElementInfo* elementInfo, bool isHint);

Description

Sets whether an ArkUI_AccessibilityElementInfo struct is a hint.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
isHint	Whether the element is a hint.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetRangeInfo

int32_t OH_ArkUI_AccessibilityElementInfoSetRangeInfo(ArkUI_AccessibilityElementInfo* elementInfo, ArkUI_AccessibleRangeInfo* rangeInfo);

Description

Sets the range information for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
rangeInfo	Current value, maximum value, and minimum value of the component attributes. Used by specific components, such as Slider, Rating, and Progress.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetGridInfo

int32_t OH_ArkUI_AccessibilityElementInfoSetGridInfo(ArkUI_AccessibilityElementInfo* elementInfo, ArkUI_AccessibleGridInfo* gridInfo);

Description

Sets the grid information for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
gridInfo	Number of rows, number of columns, and selection mode. Used by specific components, such as List, Flex, Select, and Swiper.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetGridItemInfo

int32_t OH_ArkUI_AccessibilityElementInfoSetGridItemInfo(ArkUI_AccessibilityElementInfo* elementInfo, ArkUI_AccessibleGridItemInfo* gridItem);

Description

Sets the grid item information for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
gridItem	Grid item to set. Used by specific components, such as List, Flex, Select, and Swiper.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetSelectedTextStart

int32_t OH_ArkUI_AccessibilityElementInfoSetSelectedTextStart(ArkUI_AccessibilityElementInfo* elementInfo, int32_t selectedTextStart);

Description

Sets the start position of the selected text for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
selectedTextStart	Start position of the selected text. Used by text components.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetSelectedTextEnd

int32_t OH_ArkUI_AccessibilityElementInfoSetSelectedTextEnd(ArkUI_AccessibilityElementInfo* elementInfo, int32_t selectedTextEnd);

Description

Sets the end position of the selected text for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
selectedTextEnd	End position of the selected text. Used by text components.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetCurrentItemIndex

int32_t OH_ArkUI_AccessibilityElementInfoSetCurrentItemIndex(ArkUI_AccessibilityElementInfo* elementInfo, int32_t currentItemIndex);

Description

Sets the index of the currently focused item for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
currentItemIndex	Index of the currently focused item. Used by specific components, such as List, Select, Swiper, and TabContent.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetStartItemIndex

int32_t OH_ArkUI_AccessibilityElementInfoSetStartItemIndex(ArkUI_AccessibilityElementInfo* elementInfo, int32_t startItemIndex);

Description

Sets the index of the first item displayed on the screen for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
startItemIndex	Index of the first item displayed on the screen, that is, the index of the first visible component. Used by specific components, such as List, Select, Swiper, and TabContent.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetEndItemIndex

int32_t OH_ArkUI_AccessibilityElementInfoSetEndItemIndex(
    ArkUI_AccessibilityElementInfo* elementInfo, int32_t endItemIndex);

Description

Sets the index of the last item displayed on the screen for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
endItemIndex	Index of the first item displayed on the screen, that is, the index of the last visible component. Used by specific components, such as List, Select, Swiper, and TabContent.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetItemCount

int32_t OH_ArkUI_AccessibilityElementInfoSetItemCount(
    ArkUI_AccessibilityElementInfo* elementInfo, int32_t itemCount);

Description

Sets the total number of items for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
itemCount	Total number of items. Used by specific components, such as List, Select, Swiper, and TabContent.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetAccessibilityOffset

int32_t OH_ArkUI_AccessibilityElementInfoSetAccessibilityOffset(
    ArkUI_AccessibilityElementInfo* elementInfo, int32_t offset);

Description

Sets the offset for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
offset	Pixel offset of the content area relative to the top coordinate of a scrollable component, such as List and Grid.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetAccessibilityGroup

int32_t OH_ArkUI_AccessibilityElementInfoSetAccessibilityGroup(
    ArkUI_AccessibilityElementInfo* elementInfo, bool accessibilityGroup);

Description

Sets the accessibility group for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
accessibilityGroup	Accessibility group. If this attribute is set to true, the component and all its child components form an entire selectable component, and the accessibility service will no longer be available for the content of its child components.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetAccessibilityLevel

int32_t OH_ArkUI_AccessibilityElementInfoSetAccessibilityLevel(
    ArkUI_AccessibilityElementInfo* elementInfo, const char* accessibilityLevel);

Description

Sets the accessibility level for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
accessibilityLevel	Accessibility level, which is used to decide whether a component can be identified by the accessibility service.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetZIndex

int32_t OH_ArkUI_AccessibilityElementInfoSetZIndex(
    ArkUI_AccessibilityElementInfo* elementInfo, int32_t zIndex);

Description

Sets the z-index for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
zIndex	Z-order of the component, used to control the position of the component along the z-axis perpendicular to the screen.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetAccessibilityOpacity

int32_t OH_ArkUI_AccessibilityElementInfoSetAccessibilityOpacity(
    ArkUI_AccessibilityElementInfo* elementInfo, float opacity);

Description

Sets the opacity for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
opacity	Opacity of the component. The value ranges from 0 to 1. The value 1 means opaque, and 0 means completely transparent.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetBackgroundColor

int32_t OH_ArkUI_AccessibilityElementInfoSetBackgroundColor(
    ArkUI_AccessibilityElementInfo* elementInfo, const char* backgroundColor);

Description

Sets the background color for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
backgroundColor	Background color of the component.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetBackgroundImage

int32_t OH_ArkUI_AccessibilityElementInfoSetBackgroundImage(
    ArkUI_AccessibilityElementInfo* elementInfo, const char* backgroundImage);

Description

Sets the background image for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
backgroundImage	Background image of the component.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetBlur

int32_t OH_ArkUI_AccessibilityElementInfoSetBlur(
    ArkUI_AccessibilityElementInfo* elementInfo, const char* blur);

Description

Sets the blur effect for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
blur	Blur effect information of the component.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityElementInfoSetHitTestBehavior

int32_t OH_ArkUI_AccessibilityElementInfoSetHitTestBehavior(
    ArkUI_AccessibilityElementInfo* elementInfo, const char* hitTestBehavior);

Description

Sets the hit test mode for an ArkUI_AccessibilityElementInfo struct.

Since: 13

Parameters

Name	Description
elementInfo	Pointer to an ArkUI_AccessibilityElementInfo struct.
hitTestBehavior	Hit test mode. The options are as follows: HitTestMode.Default: default mode HitTestMode.Block: block mode HitTestMode.Transparent: transparent mode HitTestMode.None: disabled

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_CreateAccessibilityEventInfo

ArkUI_AccessibilityEventInfo* OH_ArkUI_CreateAccessibilityEventInfo(void);

Description

Creates an ArkUI_AccessibilityEventInfo struct, which must be released by calling OH_ArkUI_DestroyAccessibilityEventInfo after use.

Since: 13

Returns

Returns the pointer to the created ArkUI_AccessibilityEventInfo struct; returns NULL if creation fails.

OH_ArkUI_DestoryAccessibilityEventInfo

void OH_ArkUI_DestoryAccessibilityEventInfo(ArkUI_AccessibilityEventInfo* eventInfo);

Description

Destroys an ArkUI_AccessibilityEventInfo struct.

Since: 13

Parameters

Name	Description
eventInfo	Pointer to the ArkUI_AccessibilityEventInfo struct to be destroyed.

Returns: none

OH_ArkUI_AccessibilityEventSetEventType

int32_t OH_ArkUI_AccessibilityEventSetEventType(
    ArkUI_AccessibilityEventInfo* eventInfo,  ArkUI_AccessibilityEventType eventType);

Description

Sets the event type for an ArkUI_AccessibilityEventInfo struct.

Since: 13

Parameters

Name	Description
eventInfo	Pointer to an ArkUI_AccessibilityEventInfo struct.
eventType	Type of event, as defined in ArkUI_AccessibilityEventType.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityEventSetTextAnnouncedForAccessibility

int32_t OH_ArkUI_AccessibilityEventSetTextAnnouncedForAccessibility(
    ArkUI_AccessibilityEventInfo* eventInfo, const char* textAnnouncedForAccessibility);

Description

Sets the text to be announced for accessibility in an ArkUI_AccessibilityEventInfo struct.

Since: 13

Parameters

Name	Description
eventInfo	Pointer to an ArkUI_AccessibilityEventInfo struct.
textAnnouncedForAccessibility	Content to be announced when a proactive announcement event is sent. Applicable for event type ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_VIEW_ANNOUNCE_FOR_ACCESSIBILITY.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityEventSetRequestFocusId

int32_t OH_ArkUI_AccessibilityEventSetRequestFocusId(
    ArkUI_AccessibilityEventInfo* eventInfo, int32_t requestFocusId);

Description

Sets the ID of the node to focus on in an ArkUI_AccessibilityEventInfo struct.

Since: 13

Parameters

Name	Description
eventInfo	Pointer to an ArkUI_AccessibilityEventInfo struct.
requestFocusId	ID of the node to focus on when a proactive focus event is sent. The focus must be stable and not change. Applicable for event type ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_VIEW_REQUEST_FOCUS_FOR_ACCESSIBILITY.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_AccessibilityEventSetElementInfo

int32_t OH_ArkUI_AccessibilityEventSetElementInfo(
    ArkUI_AccessibilityEventInfo* eventInfo,  ArkUI_AccessibilityElementInfo* elementInfo);

Description

Sets the component information in an ArkUI_AccessibilityEventInfo struct.

Since: 13

Parameters

Name	Description
eventInfo	Pointer to an ArkUI_AccessibilityEventInfo struct.
elementInfo	Component information for the event being sent.

Returns

ArkUI_AcessbilityErrorCode

OH_ArkUI_FindAccessibilityActionArgumentByKey

int32_t OH_ArkUI_FindAccessibilityActionArgumentByKey(
    ArkUI_AccessibilityActionArguments* arguments, const char* key, char** value);

Description

Obtains the value associated with a specified key in an ArkUI_AccessibilityEventInfo struct.

Since: 13

Parameters

Name	Description
arguments	Parameters of the action.
key	Target key.
value	Value corresponding to the target key.

Returns

ArkUI_AcessbilityErrorCode

Enum Description

ArkUI_AcessbilityErrorCode

Description

Enumerates the error codes used in the HiDebug module.

Value	Description
ARKUI_ACCESSIBILITY_NATIVE_RESULT_SUCCESS	Success.
ARKUI_ACCESSIBILITY_NATIVE_RESULT_FAILED	Failed.
ARKUI_ACCESSIBILITY_NATIVE_RESULT_BAD_PARAMETER	Invalid parameter.
ARKUI_ACCESSIBILITY_NATIVE_RESULT_OUT_OF_MEMORY	Insufficient memory.

Since

13

ArkUI_AccessibilitySearchMode

Description

Enumerates the search modes.

Value	Description
ARKUI_ACCESSIBILITY_NATIVE_SEARCH_MODE_PREFETCH_CURRENT	Searches only for the information of the specified node.
ARKUI_ACCESSIBILITY_NATIVE_SEARCH_MODE_PREFETCH_PREDECESSORS	Searches for the parent component. The search result includes the specified node information.
ARKUI_ACCESSIBILITY_NATIVE_SEARCH_MODE_PREFETCH_SIBLINGS	Searches for sibling components. The search result includes the specified node information.
ARKUI_ACCESSIBILITY_NATIVE_SEARCH_MODE_PREFETCH_CHILDREN	Searches for the next level of child nodes of the current node. The search result includes the specified node information.
ARKUI_ACCESSIBILITY_NATIVE_SEARCH_MODE_PREFETCH_RECURSIVE_CHILDREN	Searches for all child nodes of the current node. The search result includes the specified node information.

Since

13

ArkUI_AccessibilityFocusType

Description

Enumerates the focus types.

Value	Description
ARKUI_ACCESSIBILITY_NATIVE_FOCUS_TYPE_INVALID	Invalid value.
ARKUI_ACCESSIBILITY_NATIVE_FOCUS_TYPE_INPUT	Component focus.
ARKUI_ACCESSIBILITY_NATIVE_FOCUS_TYPE_ACCESSIBILITY	Accessibility focus.

Since

13

ArkUI_Accessibility_ActionType

Description

Enumerates the action types.

Value	Description
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_INVALID	Invalid value.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_CLICK	Performs a click action.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_LONG_CLICK	Performs a long-click action.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_GAIN_ACCESSIBILITY_FOCUS	Gains accessibility focus for an element.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_CLEAR_ACCESSIBILITY_FOCUS	Clears the accessibility focus state of an element.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_SCROLL_FORWARD	Scrolls a scrollable component forward.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_SCROLL_BACKWARD	Scrolls a scrollable component backward.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_COPY	Copies selected content in a text component.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_PASTE	Pastes content at the cursor position in a text component.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_CUT	Cuts selected content in a text component.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_SELECT_TEXT	Selects a range of text within an editable area in a text component. Used together with ArkUI_AccessibilityActionArguments to configure selectTextStart, selectTextEnd, and selectTextInForWard.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_SET_TEXT	Sets the text content of a text component.
ARKUI_ACCESSIBILITY_NATIVE_ACTION_TYPE_SET_CURSOR_POSITION	Sets the cursor position in a text component. Used together with ArkUI_AccessibilityActionArguments to configure offset.

Since

13

ArkUI_AccessibilityEventType

Description

Enumerates the event types.

Value	Description
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_INVALID	Invalid value.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_CLICKED	Event when an item is clicked.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_LONG_CLICKED	Event when an item is long-clicked.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_SELECTED	Event when an item is selected.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_TEXT_UPDATE	Event to be sent when text is updated.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_PAGE_STATE_UPDATE	Event to be sent when page navigation, switching, resizing, or moving occurs.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_PAGE_CONTENT_UPDATE	Event to be sent when page content changes.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_SCROLLED	Event to be sent when a scrollable component is scrolled.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_ACCESSIBILITY_FOCUSED	Event when an item gains accessibility focus.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_ACCESSIBILITY_FOCUS_CLEARED	Event when accessibility focus is cleared.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_REQUEST_ACCESSIBILITY_FOCUS	Event to actively request focus on a specific node.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_PAGE_OPEN	Event to be sent when a page is closed.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_PAGE_CLOSE	Event to be sent when a page is opened.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_ANNOUNCE_FOR_ACCESSIBILITY	Event requesting proactive announcement of specific content.
ARKUI_ACCESSIBILITY_NATIVE_EVENT_TYPE_FOCUS_NODE_UPDATE	Event to be sent when the focused component’s position or size changes.

Since

13

ArkUI_AccessibilityFocusMoveDirection

Description

Enumerates the focus movement directions.

Value	Description
ARKUI_ACCESSIBILITY_NATIVE_DIRECTION_INVALID	Invalid value.
ARKUI_ACCESSIBILITY_NATIVE_DIRECTION_UP	Move focus up.
ARKUI_ACCESSIBILITY_NATIVE_DIRECTION_DOWN	Move focus down.
ARKUI_ACCESSIBILITY_NATIVE_DIRECTION_LEFT	Move focus left.
ARKUI_ACCESSIBILITY_NATIVE_DIRECTION_RIGHT	Move focus right.
ARKUI_ACCESSIBILITY_NATIVE_DIRECTION_FORWARD	Move focus forward, based on the relationship in the search results.
ARKUI_ACCESSIBILITY_NATIVE_DIRECTION_BACKWARD	Move focus backward, based on the relationship in the search results.

Since

13

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