ui基本完毕，修了一大把的bug

Assets/mailSystem/mailSlotPrefab.cs

@@ -1,5 +1,6 @@
 using System.Collections;
 using System.Collections.Generic;
+using GameServer.Client;
 using UnityEngine;
 using UnityEngine.Networking;
 using UnityEngine.UI;
@@ -92,7 +93,7 @@ public class mailSlotPrefab : MonoBehaviour
             return;
         }
 
-        string url = reward != null ? (reward.reward_icon_url ?? string.Empty).Trim() : string.Empty;
+        string url = NormalizeRewardIconUrl(reward != null ? (reward.reward_icon_url ?? string.Empty).Trim() : string.Empty);
         if (string.IsNullOrWhiteSpace(url))
         {
             icon.sprite = fallbackRewardPreviewSprite;
@@ -175,4 +176,33 @@ public class mailSlotPrefab : MonoBehaviour
 
         return count;
     }
+
+    private static string NormalizeRewardIconUrl(string imageUrl)
+    {
+        string trimmed = imageUrl?.Trim() ?? string.Empty;
+        if (string.IsNullOrWhiteSpace(trimmed))
+        {
+            return string.Empty;
+        }
+
+        if (trimmed.StartsWith("http://", System.StringComparison.OrdinalIgnoreCase)
+            || trimmed.StartsWith("https://", System.StringComparison.OrdinalIgnoreCase))
+        {
+            return trimmed;
+        }
+
+        NetworkManager network = NetworkManager.Instance;
+        if (network == null || string.IsNullOrWhiteSpace(network.ServerUrl))
+        {
+            return trimmed;
+        }
+
+        string baseUrl = network.ServerUrl.TrimEnd('/');
+        if (!trimmed.StartsWith("/"))
+        {
+            trimmed = "/" + trimmed;
+        }
+
+        return baseUrl + trimmed;
+    }
 }