我之前见过这个，肯定是你忘了更新填表的数据来源。但是缺少那部分代码。
造成这种情况的方法是

I've seen this before and it is definitely that you have forgotten to update source of data which fill up table. But that part of code is missing. The method which caused this is

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return ;
}