TableView刷新指定的cell 或section

 //一个section刷新    

 NSIndexSet *indexSet=[[NSIndexSet alloc]initWithIndex:];    

 [tableview reloadSections:indexSet withRowAnimation:UITableViewRowAnimationAutomatic];    

 //一个cell刷新    

 NSIndexPath *indexPath=[NSIndexPath indexPathForRow: inSection:];    

 [tableView reloadRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath,nil] withRowAnimation:UITableViewRowAnimationNone];