删除带有动画的单元格时发生错误

Question

[[PeopleManager shared] removePersonAtIndex:indexPath.row withGroupIndex:currentGroupIndex];

[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation: UITableViewRowAnimationNone];

PeopleManager Class have a people array (NSMutableArray).

My error is not Index value error.

It works fine 99.9% without error. But sometimes error occur

Error Code

2012-02-03 17:17:53.232 PhoneBook[343:707] * Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit/UIKit-1912.3/UITableView.m:1046 2012-02-03 17:17:53.239 PhoneBook[343:707] * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (1) must be equal to the number of rows contained in that section before the update (1), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).' terminate called throwing an exceptionkill

How can fix it??? I read error code.but I do not know how to fix it...

Answer 1

you should wrap your deleteRows... call in a beginUpdates and endUpdates pair:

[tableView beginUpdates];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation: UITableViewRowAnimationNone];
[tableView endUpdates];

and make sure that your numberOfRowsForSection: method returns the correct updated value