iOS - UITableViewCell text alignment - ios

Question

I've added a tableView and dragged a table view cell into it.
in the utilities panel, I changed the style to subtitle.
I've also tried changing it in code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
cell.textLabel.textAlignment = UITextAlignmentCenter;
cell.detailTextLabel.textAlignment = UITextAlignmentCenter;
cell.textLabel.text = [myArray objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [myArray2 objectAtIndex:indexPath.row];
return cell;
The center alignment doesn't work!
I've tried adding a label object to the cell to have a workaround. But I don't know how to access it. even though I assigned an outlet to it, this wouldn't work:
cell.labelForCell....
What should I do?
any suggestions on how I make it work the usual way, without adding a label to the cell or something?

Answer 1

For the UITableViewCellStyleSubtitle text alignment cannot be changed
You will have to put a label and add your alignment to it,
To do that you could use this code
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
UILabel *myLabel;
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
myLabel = [[UILabel alloc] initWithFrame:Your_Frame];
//Add a tag to it in order to find it later
myLabel.tag = 111;
//Align it
myLabel.textAlignment= UITextAlignmentCenter;
[cell.contentView addSubview:myLabel];
}
myLabel = (UILabel*)[cell.contentView viewWithTag:111];
//Add text to it
myLabel.text = [myArray objectAtIndex:indexPath.row];
return cell;
}

Answer 2

The problem with the subtitle style is that it does a [self.textLabel sizeToFit] when it lays out. When you center in a container that is the perfect size of the contents, nothing changes.
Try this. In a subclass of UITableViewCell, set your textAlignment, and use this as your layoutSubviews code:
- (void)layoutSubviews
{
[super layoutSubviews];
{
CGRect frame = self.textLabel.frame;
frame.size.width = CGRectGetWidth(self.frame);
frame.origin.x = 0.0;
self.textLabel.frame = frame;
}
{
CGRect frame = self.detailTextLabel.frame;
frame.size.width = CGRectGetWidth(self.frame);
frame.origin.x = 0.0;
self.detailTextLabel.frame = frame;
}
}
This makes the textLabel's frame full width, and thus allows the centering effect to be noticeable.
Note: since this overrides layoutSubviews, there is a performance cost as it will be called often.

Answer 3

I think the reason is that: the textLabel's width depends on the text length, if the text is too long to show all in a signal line, and you have already set the line break mode and set the number of lines to 0, you will find that the text alignment will be work.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *identifier = #"identifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
if (nil == cell)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:identifier] autorelease];
cell.textLabel.textAlignment = UITextAlignmentLeft;
cell.textLabel.textColor = [UIColor redColor];
cell.detailTextLabel.textColor = [UIColor greenColor];
cell.detailTextLabel.textAlignment = UITextAlignmentCenter;
cell.textLabel.lineBreakMode = UILineBreakModeTailTruncation;
cell.textLabel.numberOfLines = 0;
}
cell.textLabel.text = [NSString stringWithFormat:#"You can initialize a very long string for the textLabel, or you can set the font to be a large number to make sure that the text cann't be shown in a singal line totally:%d", indexPath.row];
return cell;
}

Answer 4

I think adjusting the frame will work. I had style of UITableViewCellStyleValue2 but If i have a bit lengthy text in textLabel, it getting truncated at tail and textAlignment does not work here, so thought of increase the width textLabel.
-(void)layoutSubviews{
[super layoutSubviews];
if ([self.reuseIdentifier isEqualToString:#"FooterCell"]) {
CGRect aTframe = self.textLabel.frame;
aTframe.size.width += 40;
self.textLabel.frame = aTframe;
CGRect adTframe = self.detailTextLabel.frame;
adTframe.origin.x += 70;
self.detailTextLabel.frame = adTframe;
}
}

Answer 5

It is impossible to change frame for textLabel and detailTextLabel in UITableViewCell
right in cellForRowAtIndexPath: method.
If you don't want to subclass your cell you can implement a small hack using
performSelector:withObject:afterDelay:
with zero delay for changing geometry right after default layoutSubviews:
[self performSelector:#selector(alignText:) withObject:cell afterDelay:0.0];
See details at here

Answer 6

Hi please add the following instead of your code,
cell.textLabel.textAlignment = UITextAlignmentCenter;
cell.detailTextLabel.textAlignment = UITextAlignmentCenter;
change to
cell.textLabel.textAlignment = NSTextAlignmentCenter;
cell.detailTextLabel.textAlignment = NSTextAlignmentCenter;
it will work fine.