程序包 ohos.accessibility.ability

Provides an accessibility service development framework for you to develop your own accessibility applications.

To develop an accessibility application, you must create an accessibility service that inherits the AccessibleAbility class. This class provides the following basic accessibility service capabilities:

• Setting up a service connection using AccessibleAbility.onAbilityConnected()
• Handling service interrupts using AccessibleAbility.onInterrupt()
• Handling accessibility events using AccessibleAbility.onAccessibilityEvent(ohos.accessibility.AccessibilityEventInfo)
• Handling key events using AccessibleAbility.onKeyPressEvent(ohos.multimodalinput.event.KeyEvent)
• Searching for the root node of the current window using AccessibleAbility.getRootAccessibilityInfo()
• Obtaining information about the current window using AccessibleAbility.getWindows()
• Searching for the currently selected node using AccessibleAbility.gainFocus(int)
• Performing a global action using AccessibleAbility.performCommonAction(int),
• Disabling the accessibility service using AccessibleAbility.disableAbility()

Using the methods provided in this package, you can perform the following operations:

• Call the AccessibleAbility.getSoftKeyBoardController() method to obtain the SoftKeyBoardController object for controlling the show/hide mode of the soft keyboard.
• Inherit the SoftKeyBoardListener method to listen for changes of the soft keyboard's show/hide mode and implement some customized operations.
• Call the AccessibleAbility.getDisplayResizeController() method to obtain the DisplayResizeController object for controlling the display resizing and obtaining the resizing scale of the display resizing rectangle.
• Inherit the DisplayResizeListener method to listen for the display resizing operations and implement some customized operations.
• Override the AccessibleAbility.onGesture(int) method to listen for the current gesture and implement some customized logics.
• Call the AccessibleAbility.gestureSimulate(java.util.List, ohos.accessibility.ability.GestureResultListener) method to define a user gesture by simply passing the start position of this gesture path and the duration in which this gesture path continues.
• Use the GestureResultListener method to listen for whether the gesture is successfully defined and implement some customized operations.

从以下版本开始:

3

接口概要

接口	说明
DisplayResizeListener	Provides a callback to listen for display resizing operations.
SoftKeyBoardListener	Provides a callback for you to listen for changes of the soft keyboard's show/hide mode.

类概要

类	说明
AccessibilityInfo	Provides methods for obtaining information about an accessibility node.
AccessibilityWindow	Provides information about one or multiple accessibility windows for you to obtain the content displayed on your device screen.
AccessibleAbility	Provides capabilities for you to develop your own accessibility application.
AccessibleOperation	Defines an accessibility operation.
DisplayResizeController	Provides a controller for the display resizing operations.
GesturePathDefine	Defines the path of a gesture.
GesturePathPositionDefine	Describes the position for the path of a gesture.
GestureResultListener	Provides a listener to observe the result of sending gestures to the screen.
GestureResultListenerInfo	Provides information about the listener observing the gestures sent to the screen.
SoftKeyBoardController	Provides a soft keyboard controller.