Update: 新增判断订单的收据接口

Runtime/Code/SDK/GuruSDK.IAP.cs

@@ -58,7 +58,7 @@ namespace Guru
             return true;
         }
 
-        #region Purchase
+        #region Data
 
         public static ProductSetting GetProductSettingById(string productId)
         {
@@ -80,6 +80,20 @@ namespace Guru
             return null;
         }
 
+        /// <summary>
+        /// 查询某个商品是否已经包含订单了
+        /// </summary>
+        /// <param name="productName"></param>
+        /// <returns></returns>
+        public static bool IsProductHasReceipt(string productName)
+        {
+            return GuruIAP.Instance.IsProductHasReceipt(productName);
+        }
+        
+        #endregion
+        
+        #region Purchase
+        
         private static Action<string, bool> _onPurchaseCallback;
         
         /// <summary>