结构大修改，改成朴实无华的结构，不过度架构。能跑就行

Assets/Plugins/FairyGUI/Examples/Bag/MyGLoader.cs

@@ -0,0 +1,33 @@
+using UnityEngine;
+using FairyGUI;
+using System.IO;
+
+/// <summary>
+/// Extend the ability of GLoader
+/// </summary>
+public class MyGLoader : GLoader
+{
+    protected override void LoadExternal()
+    {
+        IconManager.inst.LoadIcon(this.url, OnLoadSuccess, OnLoadFail);
+    }
+
+    protected override void FreeExternal(NTexture texture)
+    {
+        texture.refCount--;
+    }
+
+    void OnLoadSuccess(NTexture texture)
+    {
+        if (string.IsNullOrEmpty(this.url))
+            return;
+
+        this.onExternalLoadSuccess(texture);
+    }
+
+    void OnLoadFail(string error)
+    {
+        Debug.Log("load " + this.url + " failed: " + error);
+        this.onExternalLoadFailed();
+    }
+}