update: 新增查询订单是否有收据的接口

Runtime/GuruIAP/Runtime/Code/IAPServiceBase.cs

@@ -323,6 +323,33 @@ namespace Guru
             }
         }
 
+        public Product GetProduct(string productName)
+        {
+            if (_storeController == null || _storeController.products == null)
+            {
+                var info = GetInfo(productName);
+                if (info != null)
+                {
+                    return _storeController.products.WithID(info.Id);
+                }
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// 当前的商品是否已经持有收据了
+        /// </summary>
+        /// <param name="productName"></param>
+        /// <returns></returns>
+        public bool IsProductHasReceipt(string productName)
+        {
+            var product = GetProduct(productName);
+            if (product != null) return product.hasReceipt;
+            return false;
+        }
+
+
         #endregion
 
         #region 订单验证器