Question

I have a table view in which the cells are built differently depending on whether the table is editing or not. Specifically, the selection style is none when in edit mode and blue when not in edit mode.

When I transition from one to the other, I noticed that some of the cells are not updated. A quick bit of logging tells me that even though the cells’ appearance changes quite drastically (accessory views are added/removed correctly for example) the table view does not refresh the selection style (nor for that matter the text).

What is going on here? Are only some attributes of the cell updated when setEditing is called? Presumably only those with a specific method allowing allocation of a separate view style (for example the EditingAccessoryType)? I guess I would benefit from a EditingSelectionStyle.

How should I resolve it? By customizing setEditing to change the selectionStyle for each cell? I’m not even sure how I would iterate through the table view to do this. reloadData isn’t an option because of some animation that I am using.

Answer 1

I found that customizing setEditing: to iterate through the visible cells and setting the selectionStyle for each to work ok.

- (void)setEditing:(BOOL)editing animated:(BOOL)animated{   
    [super setEditing:editing animated:animated];

    for (UITableViewCell *cell in [self.tableView visibleCells]) {
            NSIndexPath *path = [self.tableView indexPathForCell:cell];
            cell.selectionStyle = (self.editing && (path.row > 1 || path.section == 0)) ? UITableViewCellSelectionStyleNone : UITableViewCellSelectionStyleBlue;
    }
}