activeHierarchy
The active AccessibilityHierarchy for the screen reader. May be null if no hierarchy is active. You need an active accessibility hierarchy to present any content to the user through the screen reader. If the screen reader is off, there is no active hierarchy. If the screen reader is turned off on the device while an active hierarchy is set, the active hierarchy is automatically set to null. For all the supported platforms, refer to AssistiveSupport.
阅读时间1 分钟最后更新于 1 个月前
Definition
- Type: Property
- Namespace: UnityEngine.Accessibility
- Assembly: UnityEngine.AccessibilityModule
public static AccessibilityHierarchy activeHierarchy { get; set; }
Remarks
Throws if the screen reader support is not implemented for the platform and the code is not running in the Unity Editor.
PlatformNotSupportedExceptionWhen the active hierarchy is assigned, a notification is sent to the operating system that the screen changed considerably. The notification is sent by calling IAccessibilityNotificationDispatcher.SendScreenChanged (with a parameter).
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