Unity检查丢失引用的资源Missing
发表于2018-09-07
在修改预制体时，会经常删除原本脚本引用到的节点，这会到导致脚本中变量的引用丢失，针对这类引用的资源Missing丢失问题，下面给出了相应的解决办法。
一、用到的API
1.AssetDatabase.GetAllAssetPaths()获取unity Assets/文件下的所有资源的路径
2.AssetDatabase.LoadAssetAtPath<>(str) 根据路径加载一个资源
3、SerializedObject so=new SerializedObject(Object) 创建一个可序列化对象
var iter=so.GetIterator() 获取这个对象的迭代器 可以用iter.NextVisiable(true) 来判断有没有下一个属性
iter.propertyType 属性的类型
iter.objectReferenceValue 引用类型的属性引用的对象
iter.objectReferenceInstanceIDValue 不等于0时说明有引用对象 此时若objectReferenceValue为空 则说明Missing了
二、编辑器代码
//要继承EditorWindow才能显示自己的框框
public class FindMissingWindow : EditorWindow
｛
[MenuItem("Tools/检查/检查MissingReference资源")]
public static void FindMissing()
｛
GetWindow<FindMissingWindow>().titleContent = new GUIContent("查找Missing资源");
GetWindow<FindMissingWindow>().Show();
Find();
｝
private static Dictionary<UnityEngine.Object, List<UnityEngine.Object>> prefabs = new Dictionary<UnityEngine.Object, List<UnityEngine.Object>>();
private static Dictionary<UnityEngine.Object, string> refPaths = new Dictionary<UnityEngine.Object, string>();
private static void Find()
｛
prefabs.Clear();
string[] allassetpaths = AssetDatabase.GetAllAssetPaths();//获取所有资源路径
var gos = allassetpaths
.Where(a => a.EndsWith("prefab"))//筛选 是以prefab为后缀的 预设体资源
.Select(a => AssetDatabase.LoadAssetAtPath<UnityEngine.Object>(a));//加载这个预设体
//gos拿到的是所有加载好的预设体
foreach (var item in gos)
｛
GameObject go = item as GameObject;
if (go)
｛
Component[] cps = go.GetComponentsInChildren<Component>(true);//获取这个物体身上所有的组件
foreach (var cp in cps)//遍历每一个组件
｛
if (!cp)
｛
if (!prefabs.ContainsKey(go))
｛
prefabs.Add(go, new List<UnityEngine.Object>() ｛ cp ｝);
｝
else
｛
prefabs[go].Add(cp);
｝
continue;
｝
SerializedObject so = new SerializedObject(cp);//生成一个组件对应的S俄日阿里则对Object对象 用于遍历这个组件的所有属性
var iter = so.GetIterator();//拿到迭代器
while (iter.NextVisible(true))//如果有下一个属性
｛
//如果这个属性类型是引用类型的
if (iter.propertyType == SerializedPropertyType.ObjectReference）
｛
//引用对象是null 并且 引用ID不是0 说明丢失了引用
if (iter.objectReferenceValue == null && iter.objectReferenceInstanceIDValue != 0)
｛
if (!refPaths.ContainsKey(cp)) refPaths.Add(cp, iter.propertyPath);
else refPaths[cp] += " | " + iter.propertyPath;
if (prefabs.ContainsKey(go))
｛
if(!prefabs[go].Contains(cp))prefabs[go].Add(cp);
｝
else
｛
prefabs.Add(go, new List<UnityEngine.Object>() ｛ cp ｝);
｝
｝
｝
｝
｝
｝
｝
EditorUtility.DisplayDialog("", "就绪", "OK");
｝
//以下只是将查找结果显示
private Vector3 scroll = Vector3.zero;
private void OnGUI()
｛
scroll = EditorGUILayout.BeginScrollView(scroll);
EditorGUILayout.BeginVertical();
if (GUILayout.Button("移除丢失引用的Animator组件")) RemoveAnimatorWithMissReference();
foreach (var item in prefabs)
｛
EditorGUILayout.BeginHorizontal();
EditorGUILayout.ObjectField(item.Key, typeof(GameObject), true, GUILayout.Width(200));
EditorGUILayout.BeginVertical();
foreach (var cp in item.Value)
｛
if (cp)
｛
EditorGUILayout.BeginHorizontal();
EditorGUILayout.ObjectField(cp, cp.GetType(), true, GUILayout.Width(200));
if (refPaths.ContainsKey(cp))
｛
GUILayout.Label(refPaths[cp]);
｝
EditorGUILayout.EndHorizontal();
｝
｝
EditorGUILayout.EndVertical();
EditorGUILayout.EndHorizontal();
｝
EditorGUILayout.EndVertical();
EditorGUILayout.EndScrollView();
｝
private void RemoveAnimatorWithMissReference()
｛
int count = 0;
foreach (var cps in prefabs.Values)
｛
foreach (var item in cps)
｛
Animator a = item as Animator;
if (a)
｛
count++;
EditorUtility.SetDirty(a.gameObject);
DestroyImmediate(a, true);
｝
｝
｝
if (count > 0)
｛
EditorUtility.DisplayDialog("", "一共移除" + count + "个Animator组件", "OK");
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
Find();
｝
｝
｝
来自：https://blog.csdn.net/qq_28663903/article/details/79287938