Why is my detailTextLabel moving?

Question

I'm using the following code in my subclass of UITableViewCell to set a drop shadow for unselected cells in my UITableView

- (void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated
{
  [super setHighlighted:highlighted animated:animated];
  [self applyLabelDropShadow:!highlighted];
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
  [super setSelected:selected animated:animated];
  [self applyLabelDropShadow:!selected];
}

- (void)applyLabelDropShadow:(BOOL)applyDropShadow
{
  self.textLabel.shadowColor = applyDropShadow ? [UIColor whiteColor] : nil;
  self.textLabel.shadowOffset = CGSizeMake(0, 1);
  self.detailTextLabel.shadowColor = applyDropShadow ? [UIColor whiteColor] : nil;
  self.detailTextLabel.shadowOffset = CGSizeMake(0, 1);
}

This code from another StackOverflow question by Mike Stead and it works fine.

When the row moves from selected to deselected however, you can see the detailTextLabel shift down very slightly which I don't want to happen. This doesn't happen to the textLabel for the cell.

Any ideas why?

score 2 · Accepted Answer · answered Mar 02 '13 at 16:25

2

Try using [UIColor clearColor] for the non-shadow instead of nil:

- (void)applyLabelDropShadow:(BOOL)applyDropShadow
{
  self.textLabel.shadowColor = applyDropShadow ? [UIColor whiteColor] : [UIColor clearColor];
  self.textLabel.shadowOffset = CGSizeMake(0, 1);
  self.detailTextLabel.shadowColor = applyDropShadow ? [UIColor whiteColor] : [UIColor clearColor];
  self.detailTextLabel.shadowOffset = CGSizeMake(0,1);
}

answered Mar 02 '13 at 16:25

Richard Brown

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That fixed it, but why doesn't it happen to the `textLabel` with the same code? – conorgriffin Mar 02 '13 at 16:35
It could be a pixel-boundry issue, where the size of textLabel is different than the size of detailTextLabel. The one pixel offset affects one visibly and not the other. – Richard Brown Mar 02 '13 at 16:37
Makes sense, accepted your answer. Had to wait the obligatory cooling off period.... – conorgriffin Mar 02 '13 at 16:38

Why is my detailTextLabel moving?

1 Answers1