[ios] Multiple lines of text in UILabel

Is there a way to have multiple lines of text in UILabel like in the UITextView or should I use the second one instead?

Method 1:

extension UILabel {//Write this extension after close brackets of your class
    func lblFunction() {
        numberOfLines = 0
        lineBreakMode = .byWordWrapping//If you want word wraping
        //OR
        lineBreakMode = .byCharWrapping//If you want character wraping
    }
}

Now call simply like this

myLbl.lblFunction()//Replace your label name 

EX:

Import UIKit

class MyClassName: UIViewController {//For example this is your class. 

    override func viewDidLoad() {
    super.viewDidLoad()

        myLbl.lblFunction()//Replace your label name 

    }

}//After close of your class write this extension.

extension UILabel {//Write this extension after close brackets of your class
    func lblFunction() {
        numberOfLines = 0
        lineBreakMode = .byWordWrapping//If you want word wraping
        //OR
        lineBreakMode = .byCharWrapping//If you want character wraping
    }
}

Method 2:

Programmatically

yourLabel.numberOfLines = 0
yourLabel.lineBreakMode = .byWordWrapping//If you want word wraping
//OR
yourLabel.lineBreakMode = .byCharWrapping//If you want character wraping

Method 3:

Through Story board

To display multiple lines set 0(Zero), this will display more than one line in your label.

If you want to display n lines, set n.

See below screen.

If you want to set minimum font size for label Click Autoshrink and Select Minimum Font Size option

See below screens

Here set minimum font size

EX: 9 (In this image)

If your label get more text at that time your label text will be shrink upto 9

Use this to have multiple lines of text in UILabel:

textLabel.lineBreakMode = NSLineBreakByWordWrapping;
textLabel.numberOfLines = 0;

Swift:

textLabel.lineBreakMode = .byWordWrapping
textLabel.numberOfLines = 0

UILabel *helpLabel = [[UILabel alloc] init];
NSAttributedString *attrString = [[NSAttributedString alloc] initWithString:label];
helpLabel.attributedText = attrString;
// helpLabel.text = label;

helpLabel.textAlignment = NSTextAlignmentCenter;
helpLabel.lineBreakMode = NSLineBreakByWordWrapping;
helpLabel.numberOfLines = 0;

For some reasons its not working for me in iOS 6 not sure why. Tried it with and without attributed text. Any suggestions.

The best solution I have found (to an otherwise frustrating problem that should have been solved in the framework) is similar to vaychick's.

Just set number of lines to 0 in either IB or code

myLabel.numberOfLines = 0;

This will display the lines needed but will reposition the label so its centered horizontally (so that a 1 line and 3 line label are aligned in their horizontal position). To fix that add:

CGRect currentFrame = myLabel.frame;
CGSize max = CGSizeMake(myLabel.frame.size.width, 500);
CGSize expected = [myString sizeWithFont:myLabel.font constrainedToSize:max lineBreakMode:myLabel.lineBreakMode]; 
currentFrame.size.height = expected.height;
myLabel.frame = currentFrame;

UILabel *textLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 150, 30)];
[textLabel sizeToFit];
textLabel.numberOfLines = 0;
textLabel.text = @"Your String...";

Try using this:

lblName.numberOfLines = 0;
[lblName sizeToFit];

You can use \r to go to next line while filling up the UILabel using NSString.

UILabel * label;


label.text = [NSString stringWithFormat:@"%@ \r %@",@"first line",@"seconcd line"];

This code is returning size height according to text

+ (CGFloat)findHeightForText:(NSString *)text havingWidth:(CGFloat)widthValue andFont:(UIFont *)font
 {
    CGFloat result = font.pointSize+4;
    if (text) 
{
        CGSize size;

        CGRect frame = [text boundingRectWithSize:CGSizeMake(widthValue, 999)
                                          options:NSStringDrawingUsesLineFragmentOrigin
                                       attributes:@{NSFontAttributeName:font}
                                          context:nil];
        size = CGSizeMake(frame.size.width, frame.size.height+1);
        result = MAX(size.height, result); //At least one row
    }
    return result;
}

textLabel.lineBreakMode = UILineBreakModeWordWrap;
textLabel.numberOfLines = 0;

The solution above does't work in my case. I'm doing like this:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    // ...

    CGSize size = [str sizeWithFont:[UIFont fontWithName:@"Georgia-Bold" size:18.0] constrainedToSize:CGSizeMake(240.0, 480.0) lineBreakMode:UILineBreakModeWordWrap];
    return size.height + 20;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil)
    {
        // ...
        cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
        cell.textLabel.numberOfLines = 0;
        cell.textLabel.font = [UIFont fontWithName:@"Georgia-Bold" size:18.0];
    }

    // ...

    UILabel *textLabel = [cell textLabel];
    CGSize size = [text sizeWithFont:[UIFont fontWithName:@"Georgia-Bold" size:18.0]
                                        constrainedToSize:CGSizeMake(240.0, 480.0)
                                            lineBreakMode:UILineBreakModeWordWrap];

    cell.textLabel.frame = CGRectMake(0, 0, size.width + 20, size.height + 20);

    //...
}

myUILabel.numberOfLines = 0;
myUILabel.text = @"your long string here";
[myUILabel sizeToFit];

Swift 3
Set number of lines zero for dynamic text information, it will be useful for varying text.

var label = UILabel()
let stringValue = "A label\nwith\nmultiline text."
label.text = stringValue
label.numberOfLines = 0
label.lineBreakMode = .byTruncatingTail // or .byWrappingWord
label.minimumScaleFactor = 0.8 . // It is not required but nice to have a minimum scale factor to fit text into label frame

UILabel *labelName = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 30)];
[labelName sizeToFit];
labelName.numberOfLines = 0;
labelName.text = @"Your String...";
[self.view addSubview:labelName];

These things helped me

Change these properties of UILabel

label.numberOfLines = 0;
label.adjustsFontSizeToFitWidth = NO;
label.lineBreakMode = NSLineBreakByWordWrapping;

And while giving input String use \n to display different words in different lines.

Example :

 NSString *message = @"This \n is \n a demo \n message for \n stackoverflow" ;

you should try this:

-(CGFloat)dynamicLblHeight:(UILabel *)lbl
{
    CGFloat lblWidth = lbl.frame.size.width;
    CGRect lblTextSize = [lbl.text boundingRectWithSize:CGSizeMake(lblWidth, MAXFLOAT)
                                               options:NSStringDrawingUsesLineFragmentOrigin
                                            attributes:@{NSFontAttributeName:lbl.font}
                                               context:nil];
    return lblTextSize.size.height;
}

Set below either in code or in storyboard itself

Label.lineBreakMode = NSLineBreakByWordWrapping; Label.numberOfLines = 0;

and please don't forget to set left, right, top and bottom constraints for label otherwise it won't work.

If you have to use the:

myLabel.numberOfLines = 0;

property you can also use a standard line break ("\n"), in code, to force a new line.

In this function pass string that you want to assign in label and pass font size in place of self.activityFont and pass label width in place of 235, now you get label height according to your string. it will work fine.

-(float)calculateLabelStringHeight:(NSString *)answer
{
    CGRect textRect = [answer boundingRectWithSize: CGSizeMake(235, 10000000) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:self.activityFont} context:nil];
    return textRect.size.height;

}

Swift 4:

label.lineBreakMode = .byWordWrapping

label.numberOfLines = 0

label.translatesAutoresizingMaskIntoConstraints = false

label.preferredMaxLayoutWidth = superview.bounds.size.width - 10 

Already answered, but you can do it manually in the storyboard too. Under Attributes Inspector for the Label, you can change Line Breaks to Word Wrap (or character wrap).

In IB, set number of lines to 0 (allows unlimited lines)

When typing within the text field using IB, use "alt-return" to insert a return and go to the next line (or you can copy in text already separated out by lines).

lets try this

textLabel.lineBreakMode = NSLineBreakModeWordWrap; // UILineBreakModeWordWrap deprecated     
textLabel.numberOfLines = 0;                          

You can do that via the Storyboard too:

1. Select the Label on the view controller
2. In the Attribute Inspector, increase the value of the Line option (Press Alt+Cmd+4 to show Attributes Inspector)
3. Double click the Label in the view controller and write or paste your text
4. Resize the Label and/or increase the font size so that the whole text could be shown

On C#, this worked for me inside UITableViewCell.

        UILabel myLabel = new UILabel();
        myLabel.Font = UIFont.SystemFontOfSize(16);
        myLabel.Lines = 0;
        myLabel.TextAlignment = UITextAlignment.Left;
        myLabel.LineBreakMode = UILineBreakMode.WordWrap;
        myLabel.MinimumScaleFactor = 1;
        myLabel.AdjustsFontSizeToFitWidth = true;

       myLabel.InvalidateIntrinsicContentSize();
       myLabel.Frame = new CoreGraphics.CGRect(20, mycell.ContentView.Frame.Y + 20, cell.ContentView.Frame.Size.Width - 40, mycell.ContentView.Frame.Size.Height);
       myCell.ContentView.AddSubview(myLabel);

I think the point here is:-

            myLabel.TextAlignment = UITextAlignment.Left;
            myLabel.LineBreakMode = UILineBreakMode.WordWrap;
            myLabel.MinimumScaleFactor = 1;
            myLabel.AdjustsFontSizeToFitWidth = true;

Use story borad : select the label to set number of lines to zero......Or Refer this