added GetAssetNames functionality

Author: locus84

Runtime/BundleManager.Api.cs

@@ -59,12 +59,12 @@ public static T[] LoadAll<T>(string bundleName) where T : Object
             {
                 EnsureAssetDatabase();
                 var assets = s_EditorAssetMap.GetAssetPaths(bundleName);
-                if (assets.Count == 0) return new T[0];
+                if (assets.Length == 0) return new T[0];
 
                 var typeExpected = typeof(T);
-                var foundList = new List<T>(assets.Count);
+                var foundList = new List<T>(assets.Length);
 
-                for (int i = 0; i < assets.Count; i++)
+                for (int i = 0; i < assets.Length; i++)
                 {
                     var loaded = UnityEditor.AssetDatabase.LoadAssetAtPath<T>(assets[i]);
                     if (loaded == null) continue;
@@ -223,6 +223,21 @@ public static bool IsAssetExist(string bundleName, string assetName)
             if (!s_AssetBundles.TryGetValue(bundleName, out var foundBundle)) return false;
             return foundBundle.Bundle.Contains(assetName);
         }
+
+        public static string[] GetAssetNames(string bundleName) 
+        {
+#if UNITY_EDITOR
+            if (UseAssetDatabase) 
+            {
+                EnsureAssetDatabase();
+                return s_EditorAssetMap.GetAssetNames(bundleName);
+            }
+#endif
+            if (!Initialized) throw new System.Exception("BundleManager not initialized, try initialize first!");
+            if (!s_AssetBundles.TryGetValue(bundleName, out var foundBundle))
+                return new string[0];
+            return foundBundle.Bundle.GetAllAssetNames();
+        }
 
         public static GameObject Instantiate(GameObject original)
         {

Runtime/EditorAssetMap.cs

@@ -9,6 +9,7 @@ public class EditorAssetMap
     {        
         private Dictionary<string, Dictionary<string, List<string>>> m_Map = new Dictionary<string, Dictionary<string, List<string>>>();
         static List<string> s_EmptyStringList = new List<string>();
+        static string[] s_EmptyStringArray = new string[0];
 
         public EditorAssetMap(AssetbundleBuildSettings settings)
         {
@@ -41,10 +42,16 @@ public List<string> GetAssetPaths(string bundleName, string assetName)
             return pathList;
         }
 
-        public List<string> GetAssetPaths(string bundleName)
+        public string[] GetAssetPaths(string bundleName)
         {
-            if (!m_Map.TryGetValue(bundleName, out var innerDic)) return s_EmptyStringList;
-            return innerDic.Values.SelectMany(list => list).ToList();
+            if (!m_Map.TryGetValue(bundleName, out var innerDic)) return s_EmptyStringArray;
+            return innerDic.Values.SelectMany(list => list).ToArray();
+        }
+        
+        public string[] GetAssetNames(string bundleName)
+        {
+            if (!m_Map.TryGetValue(bundleName, out var innerDic)) return s_EmptyStringArray;
+            return innerDic.Keys.ToArray();
         }
 
         public bool IsAssetExist(string bundleName, string assetName)