AssetDatabase.IsMainAssetAtPathLoaded

参数

描述

如果在内存中加载 assetPath 下的主资源对象，则返回 true。

所有路径均是相对于项目文件夹的路径，例如："Assets/MyTextures/hello.png"。

另请参阅：AssetDatabase.LoadMainAssetAtPath、Resources.UnloadAsset。

using UnityEditor;
using UnityEngine;

public class AssetDatabaseExamples : MonoBehaviour
{
    [MenuItem("AssetDatabase/Is Main Asset At Path Loaded")]
    static void IsMainAssetAtPathLoadedExample()
    {
        //Create a material and unload it
        var materialPath = "Assets/Materials/NewMat0.mat";
        var material = new Material(Shader.Find("Standard"));
        AssetDatabase.CreateAsset(material, materialPath);
        Resources.UnloadAsset(material);

        //This will be false
        Debug.Log(AssetDatabase.IsMainAssetAtPathLoaded(materialPath));
        //Load material into memory
        AssetDatabase.LoadAssetAtPath(materialPath, typeof(Object));
        //This will be true
        Debug.Log(AssetDatabase.IsMainAssetAtPathLoaded(materialPath));
    }
}