监听Hierachy、Project等视图结构变化的事件

来源：互联网发布：端口映射软件哪个好编辑：程序博客网时间：2024/05/22 19:26

最近我发现了一个更好的方法来监听Project视图变化，欢迎大家前来看看 Unity3D研究院之监听Project视图结构变化的事件
以前就有人问我怎么监听Hierarchy视图中创建或删除变化的事件，当时因为有别的事情就没研究这块。刚好最近有这一类的需求我就学习学习。网上发现了一个日本人写的文档，实现的原理很有意思，内容不错我就翻译一下。
原文：http://anchan828.hatenablog.jp/entry/2013/12/29/015306
请注意一定把这两个监听的脚本放在Editor文件夹下。
先是基类。
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usingSystem;
usingSystem.Collections;
usingSystem.Reflection;
usingUnityEditor;
usingUnityEngine;
[InitializeOnLoad]
publicclassEditorMonoBehaviour
{
    staticEditorMonoBehaviour()
    {
        vartype=Types.GetType("UnityEditor.EditorAssemblies","UnityEditor.dll");
        varmethod=type.GetMethod("SubclassesOf",BindingFlags.Static|BindingFlags.NonPublic|BindingFlags.Instance,null,newType[]{typeof(Type)},null);
        vare=method.Invoke(null,newobject[]{typeof(EditorMonoBehaviour)})asIEnumerable;
        foreach(TypeeditorMonoBehaviourClassine){
            method=editorMonoBehaviourClass.BaseType.GetMethod("OnEditorMonoBehaviour",BindingFlags.NonPublic|BindingFlags.Instance);
            if(method!=null){
                method.Invoke(System.Activator.CreateInstance(editorMonoBehaviourClass),newobject[0]);
            }
        }
    }
    privatevoidOnEditorMonoBehaviour()
    {
        EditorApplication.update+=Update;
        EditorApplication.hierarchyWindowChanged+=OnHierarchyWindowChanged;
        EditorApplication.hierarchyWindowItemOnGUI+=HierarchyWindowItemOnGUI;
        EditorApplication.projectWindowChanged+=OnProjectWindowChanged;
        EditorApplication.projectWindowItemOnGUI+=ProjectWindowItemOnGUI;
        EditorApplication.modifierKeysChanged+=OnModifierKeysChanged;
        // globalEventHandler
        EditorApplication.CallbackFunctionfunction=()=>OnGlobalEventHandler(Event.current);
        FieldInfoinfo=typeof(EditorApplication).GetField("globalEventHandler",BindingFlags.Static|BindingFlags.Instance|BindingFlags.NonPublic);
        EditorApplication.CallbackFunctionfunctions=(EditorApplication.CallbackFunction)info.GetValue(null);
        functions+=function;
        info.SetValue(null,(object)functions);
        EditorApplication.searchChanged+=OnSearchChanged;
        EditorApplication.playmodeStateChanged+=()=>{
            if(EditorApplication.isPaused){
                OnPlaymodeStateChanged(PlayModeState.Paused);
            }
            if(EditorApplication.isPlaying){
                OnPlaymodeStateChanged(PlayModeState.Playing);
            }
            if(EditorApplication.isPlayingOrWillChangePlaymode){
                OnPlaymodeStateChanged(PlayModeState.PlayingOrWillChangePlaymode);
            }
        };
    }
    publicvirtualvoidUpdate()
    {
    }
    publicvirtualvoidOnHierarchyWindowChanged()
    {
    }
    publicvirtualvoidHierarchyWindowItemOnGUI(intinstanceID,RectselectionRect)
    {
    }
    publicvirtualvoidOnProjectWindowChanged()
    {
    }
    publicvirtualvoidProjectWindowItemOnGUI(stringguid,RectselectionRect)
    {
    }
    publicvirtualvoidOnModifierKeysChanged()
    {
    }
    publicvirtualvoidOnGlobalEventHandler(Evente)
    {
    }
    publicvirtualvoidOnSearchChanged()
    {
    }
    publicvirtualvoidOnPlaymodeStateChanged(PlayModeStateplayModeState)
    {
    }
    publicenumPlayModeState
    {
        Playing,
        Paused,
        Stop,
        PlayingOrWillChangePlaymode
    }
}
接着是继承类，所有监听的事件在这里完成，两个类都不用实例化也不用NEW直接就可以监听。
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usingUnityEditor;
usingUnityEngine;

publicclassNewBehaviourScript:EditorMonoBehaviour
{
publicoverridevoidUpdate()
{
//Debug.Log ("每一帧回调一次");
}
publicoverridevoidOnPlaymodeStateChanged(PlayModeStateplayModeState)
{
//Debug.Log ("游戏运行模式发生改变，点击运行游戏或者暂停游戏或者帧运行游戏按钮时触发: " + playModeState);
}
publicoverridevoidOnGlobalEventHandler(Evente)
{
//Debug.Log ("全局事件回调: " + e);
}

publicoverridevoidHierarchyWindowItemOnGUI(intinstanceID,RectselectionRect)
{
// Debug.Log (string.Format ("{0} : {1} - {2}", EditorUtility.InstanceIDToObject (instanceID), instanceID, selectionRect));
}
publicoverridevoidOnHierarchyWindowChanged()
{
Debug.Log("层次视图发生变化");
}
publicoverridevoidOnModifierKeysChanged()
{
// Debug.Log ("当触发键盘事件");
}
publicoverridevoidOnProjectWindowChanged()
{
// Debug.Log ("当资源视图发生变化");
}
publicoverridevoidProjectWindowItemOnGUI(stringguid,RectselectionRect)
{
//根据GUID得到资源的准确路径
//Debug.Log (string.Format ("{0} : {1} - {2}", AssetDatabase.GUIDToAssetPath (guid), guid, selectionRect));
}
}
思考：因为在这里我们只能得到它变化的事件，但是我们不知道哪个GameObject变化了。所以我觉得可以自己写一段代码来对比一下前后

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