Ios 如何在CloudKit中设置对当前用户的引用？

我有一个

CKRecordType

，其中有一个参考字段，我想设置为应用程序的当前用户。

---

我应该怎么做？

首先，获取

用户ID

：

- (void)getUserId
{
    [self.defaultContainer fetchUserRecordIDWithCompletionHandler:^(CKRecordID * _Nullable recordID,
                                                                    NSError * _Nullable error)
     {
         if (error == nil)
         {
             self.userRecordID = recordID;
         }
     }];
}

然后：

- (void)getUserId
{
    [self.defaultContainer fetchUserRecordIDWithCompletionHandler:^(CKRecordID * _Nullable recordID,
                                                                    NSError * _Nullable error)
     {
         if (error == nil)
         {
             self.userRecordID = recordID;
         }
     }];
}

CKRecord * record = [[CKRecord alloc] initWithRecordType:@"UserStatus"];
record[@"status"] = @"online";

CKReference *userReference = [[CKReference alloc] initWithRecordID:self.userRecordID action:CKReferenceActionDeleteSelf];
record[@"user"] = userReference;