Unity 检查丢失引用的资源 Missing

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();
}
}

4000
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();
}
}
}