无效的更新：iOS中第0部分的无效行数

Question

I am trying to Hide and show the table view cells in each section by clicking a button. I have read all the related issue about this but i can't see any relevant answer to my problem. There is no problem in hiding them one by one (meaning not both), but when the other section in a cell is hidden (removed/no cell), then i click the button. i am having this error:

Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit_Sim/UIKit-2935.137/UITableView.m:1368 2014-06-18 13:20:26.560 Head2Head[2001:60b] Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (2) must be equal to the number of rows contained in that section before the update (0), plus or minus the number of rows inserted or deleted from that section (0 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).

And here is my code:

-(void) commentButtonClicked:(id) sender{
UIButton *btn = (UIButton *) sender;
indexClicked = btn.tag -1;

if (!commentClicked) {
    commentClicked = YES;
}else{
    commentClicked = NO;
}

@try {
    [tableView1 beginUpdates];
    [tableView1 reloadSections:[NSIndexSet indexSetWithIndex:btn.tag-1] withRowAnimation:UITableViewRowAnimationFade];
    [tableView1 endUpdates];

}
@catch (NSException *exception) {
    NSLog(@"%@", exception);
}
@finally {

}

}

And....

-(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
NSString *numberOfRows = [commentsArray objectAtIndex:section];

if (commentClicked && indexClicked == section) {
    return 0;
}else{
    return [numberOfRows integerValue];
}

}

Answer 1

I think you need to reload both sections. The one that is already hidden and the one you are going to hide.