1# 无障碍子系统JS API变更 2 3OpenHarmony 3.1 Release版本相较于OpenHarmony 3.0 LTS版本，无障碍子系统的API变更如下: 4 5## 接口变更 6 7| 模块名 | 类名 | 方法/属性/枚举/常量 | 变更类型 | 8|---|---|---|---| 9| ohos.accessibility | EventInfo | itemCount?: number; | 新增 | 10| ohos.accessibility | EventInfo | endIndex?: number; | 新增 | 11| ohos.accessibility | EventInfo | currentIndex?: number; | 新增 | 12| ohos.accessibility | EventInfo | beginIndex?: number; | 新增 | 13| ohos.accessibility | EventInfo | lastContent?: string; | 新增 | 14| ohos.accessibility | EventInfo | contents?: Array\<string>; | 新增 | 15| ohos.accessibility | EventInfo | textMoveUnit?: TextMoveUnit; | 新增 | 16| ohos.accessibility | EventInfo | triggerAction: Action; | 新增 | 17| ohos.accessibility | EventInfo | description?: string; | 新增 | 18| ohos.accessibility | EventInfo | pageId ?: number; | 新增 | 19| ohos.accessibility | EventInfo | componentType?: string; | 新增 | 20| ohos.accessibility | EventInfo | bundleName: string; | 新增 | 21| ohos.accessibility | EventInfo | windowUpdateType?: WindowUpdateType; | 新增 | 22| ohos.accessibility | EventInfo | type: EventType; | 新增 | 23| ohos.accessibility | EventInfo | constructor(jsonObject); | 新增 | 24| ohos.accessibility | AccessibilityAbilityInfo | readonly eventTypes: Array\<EventType>; | 新增 | 25| ohos.accessibility | AccessibilityAbilityInfo | readonly description: string; | 新增 | 26| ohos.accessibility | AccessibilityAbilityInfo | readonly capabilities: Array\<Capability>; | 新增 | 27| ohos.accessibility | AccessibilityAbilityInfo | readonly abilityTypes: Array\<AbilityType>; | 新增 | 28| ohos.accessibility | AccessibilityAbilityInfo | readonly bundleName: string; | 新增 | 29| ohos.accessibility | AccessibilityAbilityInfo | readonly name: string; | 新增 | 30| ohos.accessibility | AccessibilityAbilityInfo | readonly id: string; | 新增 | 31| ohos.accessibility | CaptionsStyle | windowColor: number \| string; | 新增 | 32| ohos.accessibility | CaptionsStyle | backgroundColor: number \| string; | 新增 | 33| ohos.accessibility | CaptionsStyle | fontEdgeType: CaptionsFontEdgeType; | 新增 | 34| ohos.accessibility | CaptionsStyle | fontColor: number \| string; | 新增 | 35| ohos.accessibility | CaptionsStyle | fontScale: number; | 新增 | 36| ohos.accessibility | CaptionsStyle | fontFamily: CaptionsFontFamily; | 新增 | 37| ohos.accessibility | CaptionsManager | off(type: 'styleChange', callback?: Callback\<CaptionsStyle>): void; | 新增 | 38| ohos.accessibility | CaptionsManager | off(type: 'enableChange', callback?: Callback\<boolean>): void; | 新增 | 39| ohos.accessibility | CaptionsManager | on(type: 'styleChange', callback: Callback\<CaptionsStyle>): void; | 新增 | 40| ohos.accessibility | CaptionsManager | on(type: 'enableChange', callback: Callback\<boolean>): void; | 新增 | 41| ohos.accessibility | CaptionsManager | style: CaptionsStyle; | 新增 | 42| ohos.accessibility | CaptionsManager | enabled: boolean; | 新增 | 43| ohos.accessibility | accessibility | getCaptionsManager(): CaptionsManager; | 新增 | 44| ohos.accessibility | accessibility | off(type: 'touchGuideStateChange', callback?: Callback\<boolean>): void; | 新增 | 45| ohos.accessibility | accessibility | off(type: 'accessibilityStateChange', callback?: Callback\<boolean>): void; | 新增 | 46| ohos.accessibility | accessibility | on(type: 'touchGuideStateChange', callback: Callback\<boolean>): void; | 新增 | 47| ohos.accessibility | accessibility | on(type: 'accessibilityStateChange', callback: Callback\<boolean>): void; | 新增 | 48| ohos.accessibility | accessibility | sendEvent(event: EventInfo, callback: AsyncCallback\<void>): void;<br>sendEvent(event: EventInfo): Promise\<void>; | 新增 | 49| ohos.accessibility | accessibility | getAbilityLists(abilityType: AbilityType, stateType: AbilityState, callback: AsyncCallback\<Array\<AccessibilityAbilityInfo>>): void;<br>getAbilityLists(abilityType: AbilityType, stateType: AbilityState): Promise\<Array\<AccessibilityAbilityInfo>>; | 新增 | 50| ohos.accessibility | accessibility | isOpenTouchGuide(callback: AsyncCallback\<boolean>): void;<br>isOpenTouchGuide(): Promise\<boolean>; | 新增 | 51| ohos.accessibility | accessibility | isOpenAccessibility(callback: AsyncCallback\<boolean>): void;<br>isOpenAccessibility(): Promise\<boolean>; | 新增 | 52