当层级视图中的对象或对象组发生更改时引发的事件。
触发此事件的操作包括在当前层级视图中创建对象以及对其进行重命名、重定父级或销毁,以及加载、卸载、重命名或重新排序已加载的场景。请注意,系统不会为响应这些操作而立即引发该事件,而是会在下一次更新编辑器应用程序期间发送。
对已设置 HideFlags.HideInHierarchy 的对象执行的操作不会引发此事件,但更改 Object.hideFlags 会引发此事件。
以下示例脚本会在层级视图发生更改时将对象数量记录到控制台。将该数据复制到名为 HierarchyMonitor.cs 的文件中,然后将文件放在名为 Editor 的文件夹中。
using System.Linq; using UnityEditor; using UnityEngine;
[InitializeOnLoadAttribute] public static class HierarchyMonitor { static HierarchyMonitor() { EditorApplication.hierarchyChanged += OnHierarchyChanged; }
static void OnHierarchyChanged() { var all = Resources.FindObjectsOfTypeAll(typeof(GameObject)); var numberVisible = all.Where(obj => (obj.hideFlags & HideFlags.HideInHierarchy) != HideFlags.HideInHierarchy).Count(); Debug.LogFormat("There are currently {0} GameObjects visible in the hierarchy.", numberVisible); } }
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