Nicholas Smith Nicholas Smith - 1 month ago 9
iOS Question

Attributed string font formatting changes when dequeuing reusable UITableViewCell

I have a

UITableView
that contains cells where I'm setting an
NSAttributedString
on a
UILabel
. The
NSAttributedString
has sections that are HTML bolded using
<b>%@</b> by <b>%@</b>
, and they render correctly on the first pass however when the cell is called again the entire string is in bold, rather than the individual sections.

I prepare the
NSAttributedString
with this function.

- (NSAttributedString *)attributedStringForString:(NSString *)string forFont:(UIFont *)font {
NSLog(@"Get attributed string");
string = [string stringByAppendingString:[NSString stringWithFormat:@"<style>body{font-family: '%@'; font-size:%fpx; color:#000000;}</style>",
font.fontName,
font.pointSize]];

NSDictionary *options = @{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType};
NSAttributedString *labelString = [[NSAttributedString alloc] initWithData:[string dataUsingEncoding:NSUTF8StringEncoding] options:options documentAttributes:nil error:nil];

return labelString;
}

Answer

A couple ways to solve this:

1)

In your custom UITableViewCell, you should implement prepareForReuse:

-(void)prepareForReuse{
    [super prepareForReuse];

    // Then Reset here back to default values that you want.
    self.label.font = [UIFont systemFontOfSize: 12.0f];
}

2)

After you dequeue your table view cell in your cellForRowAtIndexPath method, you can do something like:

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
if(cell)
{
    cell.textLabel.font = [UIFont systemFontOfSize: 12.0f];
}
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