Unity gets a resource that is referenced by those resources

Unity Get a resource referenced by those resources

stay API Only know how one resource depends on other resources AssetDatabase.GetDependencies
When you delete a resource, you are often afraid that it will be referenced by other resources , Cause error , It is often necessary to find out which files refer to the resource ,Unity There is no way , Can pass AssetDatabase.GetDependencies Collect the reference relationships of all resources in the project , For example, resources in the project
A Refer to the D, B Refer to the C,
be Reverse lookup can determine D By A Refer to the , C By B Refer to the

stay Editor Create a new script in the folder AssetBeDepend.cs

using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class AssetBeDepend
{
    
    //  Store all dependencies 
    private static Dictionary<string, List<string>> referenceCacheDic = new Dictionary<string, List<string>>();

    //  stay  Assets  Right click under the file to add a button in the pop-up board  AssetBeDepend
    [MenuItem("Assets/AssetBeDepend")]
    static void Select()
    {
    
        CollectDepend();

        //  Get all selected   file 、 The folder  GUID
        string[] guids = Selection.assetGUIDs;
        foreach (var guid in guids)
        {
    
            //  take  GUID  Convert to   route 
            string assetPath = AssetDatabase.GUIDToAssetPath(guid);
            IsBeDepend(assetPath);
        }
    }

    //  Collect all dependencies in the project 
    static void CollectDepend()
    {
    
        int count = 0;
        //  obtain  Assets  All resources under the folder 
        string[] guids = AssetDatabase.FindAssets("");
        foreach (string guid in guids)
        {
    
            //  take  GUID  Convert to path 
            string assetPath = AssetDatabase.GUIDToAssetPath(guid);
            //  Get all the resources that the file directly depends on 
            string[] dependencies = AssetDatabase.GetDependencies(assetPath, false);

            foreach (var filePath in dependencies)
            {
    
                // dependency  By  assetPath  Rely on 
                //  Store all dependencies in the dictionary 
                List<string> list = null;
                if (!referenceCacheDic.TryGetValue(filePath, out list))
                {
    
                    list = new List<string>();
                    referenceCacheDic[filePath] = list;
                }
                list.Add(assetPath);
            }

            count++;
            EditorUtility.DisplayProgressBar("Search Dependencies", "Dependencies", (float)(count * 1.0f / guids.Length));
        }

        EditorUtility.ClearProgressBar();
    }

    //  Determine whether the file is dependent 
    static bool IsBeDepend(string filePath)
    {
    
        List<string> list = null;
        if (!referenceCacheDic.TryGetValue(filePath, out list))
        {
    
            return false;
        }

        //  Print out dependencies 
        foreach(var file in list)
        {
    
            Debug.LogError(filePath + "  By :" + file + "  quote ");
        }

        return true;
    }

}

The comments in the code are more detailed , Not explaining the code

The test method ： stay Assets Select a folder 、 Multiple files , Right mouse button , Click... In the pop-up panel AssetBeDepend Button