Accessibility Kit API参考 ArkTS API @ohos.accessibility (辅助功能) @ohos.accessibility.GesturePath (手势路径) @ohos.accessibility.GesturePoint (手势触摸点) @ohos.application.AccessibilityExtensionAbility (辅助功能扩展能力) AccessibilityExtensionContext (辅助功能扩展上下文) @ohos.accessibility.config (系统辅助功能配置)(系统接口) 错误码 无障碍子系统错误码