How do I wrap text in a UITableViewCell without a

Question

This is on iPhone 0S 2.0. Answers for 2.1 are fine too, though I am unaware of any differences regarding tables.

It feels like it should be possible to get text to wrap without creating a custom cell, since a UITableViewCell contains a UILabel by default. I know I can make it work if I create a custom cell, but that's not what I'm trying to achieve - I want to understand why my current approach doesn't work.

I've figured out that the label is created on demand (since the cell supports text and image access, so it doesn't create the data view until necessary), so if I do something like this:

cell.text = @""; // create the label
UILabel* label = (UILabel*)[[cell.contentView subviews] objectAtIndex:0];

then I get a valid label, but setting numberOfLines on that (and lineBreakMode) doesn't work - I still get single line text. There is plenty of height in the UILabel for the text to display - I'm just returning a large value for the height in heightForRowAtIndexPath.

Answer 1

If we are to add only text in UITableView cell, we need only two delegates to work with (no need to add extra UILabels)

1) cellForRowAtIndexPath

2) heightForRowAtIndexPath

This solution worked for me:-

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{ 
    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil)
    {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    cell.textLabel.font = [UIFont fontWithName:@"Helvetica" size:16];
    cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
    cell.textLabel.numberOfLines = 0;

    [cell setSelectionStyle:UITableViewCellSelectionStyleGray]; 
    cell.textLabel.text = [mutArr objectAtIndex:indexPath.section];
    NSLog(@"%@",cell.textLabel.text);

    cell.accessoryView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"arrow.png" ]];

    return cell;

}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{  
    CGSize labelSize = CGSizeMake(200.0, 20.0);

    NSString *strTemp = [mutArr objectAtIndex:indexPath.section];

    if ([strTemp length] > 0)
        labelSize = [strTemp sizeWithFont: [UIFont boldSystemFontOfSize: 14.0] constrainedToSize: CGSizeMake(labelSize.width, 1000) lineBreakMode: UILineBreakModeWordWrap];

    return (labelSize.height + 10);
}

Here the string mutArr is a mutable array from which i am getting my data.

EDIT :- Here is the array which I took.

mutArr= [[NSMutableArray alloc] init];

[mutArr addObject:@"HEMAN"];
[mutArr addObject:@"SUPERMAN"];
[mutArr addObject:@"Is SUPERMAN powerful than HEMAN"];
[mutArr addObject:@"Well, if HEMAN is weaker than SUPERMAN, both are friends and we will never get to know who is more powerful than whom because they will never have a fight among them"];
[mutArr addObject:@"Where are BATMAN and SPIDERMAN"];

Answer 2

A brief comment / answer to record my experience when I had the same problem. Despite using the code examples, the table view cell height was adjusting, but the label inside the cell was still not adjusting correctly - solution was that I was loading my cell from a custom NIB file, which happens after the cell height in adjusted.

And I had my settings inside the NIB file to not wrap text, and only have 1 line for the label; the NIB file settings were overriding the settings I adjusted inside the code.

The lesson I took was to make sure to always bear in mind what the state of the objects are at each point in time - they might not have been created yet! ... hth someone down the line.

Answer 3

I use the following solutions.

The data is provided separately in a member:

-(NSString *)getHeaderData:(int)theSection {
    ...
    return rowText;
}

The handling can be easily done in cellForRowAtIndexPath. Define the cell / define the font and assign these values to the result "cell". Note that the numberoflines is set to "0", which means take what is needed.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    UIFont *cellFont = [UIFont fontWithName:@"Verdana" size:12.0];
    cell.textLabel.text= [self getRowData:indexPath.section];
    cell.textLabel.font = cellFont;
    cell.textLabel.numberOfLines=0;
    return cell;
}

In heightForRowAtIndexPath, I calculate the heights of the wrapped text. The boding size shall be related to the width of your cell. For iPad this shall be 1024. For iPhone en iPod 320.

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UIFont *cellFont = [UIFont fontWithName:@"Verdana" size:12.0];
    CGSize boundingSize = CGSizeMake(1024, CGFLOAT_MAX);
    CGSize requiredSize = [[self getRowData:indexPath.section] sizeWithFont:cellFont constrainedToSize:boundingSize lineBreakMode:UILineBreakModeWordWrap];
    return requiredSize.height;    
}

Answer 4

I think this is a better and shorter solution. Just format the UILabel (textLabel) of the cell to auto calculate for the height by specifying sizeToFit and everything should be fine.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    // Configure the cell...
    cell.textLabel.text = @"Whatever text you want to put here is ok";
    cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
    cell.textLabel.numberOfLines = 0;
    [cell.textLabel sizeToFit];

    return cell;
}

Answer 5

I don't think you can manipulate a base UITableViewCell's private UILabel to do this. You could add a new UILabel to the cell yourself and use numberOfLines with sizeToFit to size it appropriately. Something like:

UILabel* label = [[UILabel alloc] initWithFrame:cell.frame];
label.numberOfLines = <...an appriate number of lines...>
label.text = <...your text...>
[label sizeToFit];
[cell addSubview:label];
[label release];

Answer 6

Updated Tim Rupe's answer for iOS7:

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] ;
    cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
    cell.textLabel.numberOfLines = 0;
    cell.textLabel.font = [UIFont fontWithName:@"Helvetica" size:17.0];
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *cellText = @"Go get some text for your cell.";
    UIFont *cellFont = [UIFont fontWithName:@"Helvetica" size:17.0];

    NSAttributedString *attributedText =
        [[NSAttributedString alloc]
            initWithString:cellText
            attributes:@
            {
                NSFontAttributeName: cellFont
            }];
    CGRect rect = [attributedText boundingRectWithSize:CGSizeMake(tableView.bounds.size.width, CGFLOAT_MAX)
                                               options:NSStringDrawingUsesLineFragmentOrigin
                                               context:nil];
    return rect.size.height + 20;
}