Attributed string in tableviewcell not showing bold text until the cell is dequeued and reloaded

Question

I have a table view, in which the cells have a label with some attributed text. The text is being set correctly from cellForRowAtIndexPath. The color of the text is being correctly set but the bold attribute is not being displayed until the cell is dequeued.

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
        MyCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellIdentifier];
        Model *model = [self.fetchedResultsController objectAtIndexPath:indexPath];
        cell.tag = indexPath.row;
        [cell updateContentWithModel:model atIndexPath:indexPath];
        return cell;
}


- (void)updateContentWithModel:(Model *)model atIndexPath:(NSIndexPath *)indexPath
{
self.model = model;
[self setTextFromModel];
[self setImageFromModelAtIndexPath:indexPath];
}

- (void) setTextFromModel
{
self.title.text = self.model.header;
self.status.attributedText = [self boldString:self.model.status fontSize:self.status.font.pointSize color:[UIColor redColor]];
}

+(NSMutableAttributedString *)boldString:(NSString *)stringToBold fontSize:(CGFloat)fontSize color:(UIColor *)color
{
NSMutableAttributedString *boldString = [[NSMutableAttributedString alloc] initWithString:stringToBold];
[boldString setAttributes:@{NSForegroundColorAttributeName: color,
                            NSFontAttributeName:[UIFont boldSystemFontOfSize:fontSize]} range:NSMakeRange(0, boldString.length)];
return boldString;
}

Has anyone experience something like this before?

It would help to show the code you use to build the attributed string and assign it to the label — , Jun 09 '15 at 14:17
Is setNeedsDisplay needed? I am not using drawRect for anything and labels are automatically updated when you update the text. My issue is that the label is updating to the attributed text but the bold attribute seems to be missing/lost until the cell has been dequeued. — Cen92, Jun 09 '15 at 14:17
Can you show your `tableView:cellForRowAtIndexPath:`? Is that where you're assigning the label? — , Jun 09 '15 at 14:27
@Cen92, I'm seeing the same thing. Were you able to resolve this? — vinnybad, Apr 19 '16 at 16:06
@Cen92 nvm just got it...I had to make sure I didn't set label.font to a non-nil value. — vinnybad, Apr 19 '16 at 16:21
Were you able to resolve it? I am experiencing this issue now. — KarenAnne, Sep 21 '17 at 06:30
@KarenAnne yes by setting the label text from willDisplayCell. — Cen92, Sep 22 '17 at 11:08

score 6 · Answer 1 · answered Jun 29 '16 at 12:22

6

I have same problem due to UIAppearance. Set font\color to nil before setting UILabel attributed text works for me.

answered Jun 29 '16 at 12:22

Petrovichev Maxim

69
1
4

score 4 · Answer 2 · answered Feb 18 '19 at 03:16

I had a similar problem. I was trying to set attributed text (specifically font color) on a UILabel in my custom UITableViewCell and it was only partially reflecting the change, even if I did it in tableView:willDisplayCell:forRowAtIndexPath: (which I believe is the recommended place to do such updates).

It turned out that I needed to set the property on the main thread:

dispatch_async(dispatch_get_main_queue(), ^{
            [label setAttributedText:text];
        });

While I was already aware that all UI updates are to be done on the main thread, I was frankly surprised that willDisplayCell wasn't already called from the main thread, at least not in this case.

Imho this should be the accepted answer, no need to tinker with setting specific properties to nil to make it magically work.. Beware, though, that in case of multiline text, the text should be set first before the dispatch block and then again inside the dispatch block. If you don't, the label won't resize. — Mark, Aug 05 '19 at 12:01

score 1 · Answer 3 · answered Feb 25 '20 at 12:21

1

For me, the issue was that I was using custom subclass of UILabel, which was using UIAppearance for colors. When I switched to using regular UILabel the issue got resolved, but now I had to handle font color myself, instead of using UIAppearance

answered Feb 25 '20 at 12:21

sabius

704
7
10

Attributed string in tableviewcell not showing bold text until the cell is dequeued and reloaded

3 Answers3

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