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Unity - Scripting API: AssetDatabase.FindAssetGUIDs

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GUID[] An array containing the GUIDs of any matching assets. If no matching assets were found, returns empty array.

Searches the asset database with a filter string and returns an array of GUIDs.

FindAssetGUIDs allows you to search for assets. The string argument can provide names, labels or types (classnames). The filter string can include:

Name: Filter assets by their filename (without extension). Words separated by a space are treated as separate name searches. For example, "test asset", is for two name searches, one looking for a match with test and the other with asset. You can also perform partial searches. For example, you can match MyAwesomeTexture by searching for awesome.

Labels (l:): Assets can have labels attached to them. Use the keyword 'l:' before each label to search for assets by their labels.

Types (t:): Use the keyword 't:' to find assets by their type. If more than one type is included in the filter string then assets that match one class will be returned. Types can either be built-in types such as Texture2D or user created script classes. User created classes are assets created from a ScriptableObject class in the project. If all assets are wanted use Object as the type because all assets derive from Object. Specifying one or more folders using the searchInFolders argument limits the searching to these folders and their child folders. This is faster than searching all assets in all folders.

AssetBundles (b:): Use the keyword 'b:' to find assets which are part of an AssetBundle.

Area (a:) : Find assets in a specific area of a project. Valid values are "all", "assets" and "packages". Use this to make your query more specific using the 'a:' keyword followed by the area name to speed up searching.

Globbing (glob:): Use globbing to match specific rules. The keyword glob: is followed by the query. For example, glob:Editor will find all Editor folders in a project, glob:(Editor|Resources) will find all Editor and Resources folders in a project, glob:Editor/* will return all assets inside Editor folders in a project, while glob:Editor/** will return all assets within Editor folders recursively.

Note:

Use AssetDatabase.LoadAssetByGUID to load an asset.

The following script example shows how the Names, Labels and Types details added to Assets can be located. The FindAssetGUIDs function is demonstrated. The assets created in this example use the ScriptObj class.

// This script file has two CS classes.  The first is a simple Unity ScriptableObject script.
// The class it defines is used by the Example class below.
// (This is a single Unity script file. You could split this file into a ScriptObj.cs and an
// Example.cs file which is more structured.)
using UnityEngine;
using UnityEditor;
using System.IO;
public class ScriptObj : ScriptableObject
{
    public void Awake()
    {
        Debug.Log("ScriptObj created");
    }
}
// Use ScriptObj to show how AssetDabase.FindAssetGUIDs can be used
public class Example
{
    static ScriptObj testI;
    static ScriptObj testJ;
    static ScriptObj testK;
    [MenuItem("Examples/FindAssetGUIs Example two")]
    static void ExampleScript()
    {
        CreateAssets();
        NamesExample();
        LabelsExample();
        TypesExample();
    }
    static void CreateAssets()
    {
        if (!Directory.Exists("Assets/AssetFolder"))
        {
            AssetDatabase.CreateFolder("Assets", "AssetFolder");
        }
        if (!Directory.Exists("Assets/AssetFolder/SpecialFolder"))
        {
            AssetDatabase.CreateFolder("Assets/AssetFolder", "SpecialFolder");
        }
        testI = (ScriptObj)ScriptableObject.CreateInstance(typeof(ScriptObj));
        AssetDatabase.CreateAsset(testI, "Assets/AssetFolder/testI.asset");
        testJ = (ScriptObj)ScriptableObject.CreateInstance(typeof(ScriptObj));
        AssetDatabase.CreateAsset(testJ, "Assets/AssetFolder/testJ.asset");
        // create an asset in a sub-folder and with a name which contains a space
        testK = (ScriptObj)ScriptableObject.CreateInstance(typeof(ScriptObj));
        AssetDatabase.CreateAsset(testK, "Assets/AssetFolder/SpecialFolder/testK example.asset");
        // an asset with a material will be used later
        Material material = new Material(Shader.Find("Standard"));
        AssetDatabase.CreateAsset(material, "Assets/AssetFolder/SpecialFolder/MyMaterial.mat");
    }
    static void NamesExample()
    {
        Debug.Log("*** FINDING ASSETS BY NAME ***");
        GUID[] results;
        results = AssetDatabase.FindAssetGUIDs("testI");
        foreach (GUID guid in results)
        {
            Debug.Log("testI: " + AssetDatabase.GUIDToAssetPath(guid));
        }
        results = AssetDatabase.FindAssetGUIDs("testJ");
        foreach (GUID guid in results)
        {
            Debug.Log("testJ: " + AssetDatabase.GUIDToAssetPath(guid));
        }
        results = AssetDatabase.FindAssetGUIDs("testK example");
        foreach (GUID guid in results)
        {
            Debug.Log("testK example: " + AssetDatabase.GUIDToAssetPath(guid));
        }
        Debug.Log("*** More complex asset search ***");
        // find all assets that contain test (which is all assets)
        results = AssetDatabase.FindAssetGUIDs("test");
        foreach (GUID guid in results)
        {
            Debug.Log("name:test - " + AssetDatabase.GUIDToAssetPath(guid));
        }
    }
    static void LabelsExample()
    {
        Debug.Log("*** FINDING ASSETS BY LABELS ***");
        string[] setLabels;
        setLabels = new string[] { "wrapper" };
        AssetDatabase.SetLabels(testI, setLabels);
        setLabels = new string[] { "bottle", "banana", "carrot" };
        AssetDatabase.SetLabels(testJ, setLabels);
        setLabels = new string[] { "swappable", "helmet" };
        AssetDatabase.SetLabels(testK, setLabels);
        // label searching:
        //   testI has wrapper, testK has swappable, so both have 'app'
        //   testJ has bottle, so have a label searched as 'bot'
        GUID[] getGuids = AssetDatabase.FindAssetGUIDs("l:app l:bot");
        foreach (GUID guid in getGuids)
        {
            Debug.Log("label lookup: " + AssetDatabase.GUIDToAssetPath(guid));
        }
    }
    static void TypesExample()
    {
        Debug.Log("*** FINDING ASSETS BY TYPE ***");
        GUID[] guids;
        guids = AssetDatabase.FindAssetGUIDs("t:material");
        foreach (GUID guid in guids)
        {
            Debug.Log("Material: " + AssetDatabase.GUIDToAssetPath(guid));
        }
        guids = AssetDatabase.FindAssetGUIDs("t:Object l:helmet");
        foreach (GUID guid in guids)
        {
            Debug.Log("ScriptObj+helmet: " + AssetDatabase.GUIDToAssetPath(guid));
        }
    }
}

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