'UILabel - auto-size label to fit text?

Is it possible to auto-resize the UILabel box/bounds to fit the contained text? (I don't care if it ends up larger than the display)

So if a user enters "hello" or "my name is really long i want it to fit in this box", it is never truncated and the label is 'widened' accordingly?

Solution 1:^[1]

Using [label sizeToFit]; will achieve the same result from Daniels Category.

Although I recommend to use autolayout and let the label resize itself based on constraints.

Solution 2:^[2]

If we want that UILabel should shrink and expand based on text size then storyboard with autolayout is best option. Below are the steps to achieve this

Steps

Put UILabel in view controller and place it wherever you want. Also put 0 for numberOfLines property of UILabel.
Give it Top, Leading and Trailing space pin constraint.

enter image description here

Now it will give warning, Click on the yellow arrow.

enter image description here

Click on Update Frame and click on Fix Misplacement. Now this UILabel will shrink if text is less and expand if text is more.

Solution 3:^[3]

This is not as complicated as some of the other answers make it.

Pin the left and top edges

Just use auto layout to add constraints to pin the left and top sides of the label.

After that it will automatically resize.

Notes

Don't add constraints for the width and height. Labels have an intrinsic size based on their text content.
Thanks to this answer for help with this.

No need to set sizeToFit when using auto layout. My complete code for the example project is here:

import UIKit
class ViewController: UIViewController {

    @IBOutlet weak var myLabel: UILabel!

    @IBAction func changeTextButtonTapped(sender: UIButton) {
        myLabel.text = "my name is really long i want it to fit in this box"
    }
}

If you want your label to line wrap then set the number of lines to 0 in IB and add myLabel.preferredMaxLayoutWidth = 150 // or whatever in code. (I also pinned my button to the bottom of the label so that it would move down when the label height increased.)

If you are looking for dynamically sizing labels inside a UITableViewCell then see this answer.

Solution 4:^[4]

Use [label sizeToFit]; to adjust the text in UILabel

Solution 5:^[5]

Here's what I am finding works for my situation:

1) The height of the UILabel has a >= 0 constraint using autolayout. The width is fixed. 2) Assign the text into the UILabel, which already has a superview at that point (not sure how vital that is). 3) Then, do:

    label.sizeToFit()
    label.layoutIfNeeded()

The height of the label is now set appropriately.

Solution 6:^[6]

I created some methods based Daniel's reply above.

-(CGFloat)heightForLabel:(UILabel *)label withText:(NSString *)text
{
    CGSize maximumLabelSize     = CGSizeMake(290, FLT_MAX);

    CGSize expectedLabelSize    = [text sizeWithFont:label.font
                                constrainedToSize:maximumLabelSize
                                    lineBreakMode:label.lineBreakMode];

    return expectedLabelSize.height;
}

-(void)resizeHeightToFitForLabel:(UILabel *)label
{
    CGRect newFrame         = label.frame;
    newFrame.size.height    = [self heightForLabel:label withText:label.text];
    label.frame             = newFrame;
}

-(void)resizeHeightToFitForLabel:(UILabel *)label withText:(NSString *)text
{
    label.text              = text;
    [self resizeHeightToFitForLabel:label];
}

Solution 7:^[7]

@implementation UILabel (UILabel_Auto)

- (void)adjustHeight {

    if (self.text == nil) {
        self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, self.bounds.size.width, 0);
        return;
    }

    CGSize aSize = self.bounds.size;
    CGSize tmpSize = CGRectInfinite.size;
    tmpSize.width = aSize.width;

    tmpSize = [self.text sizeWithFont:self.font constrainedToSize:tmpSize];

    self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, aSize.width, tmpSize.height);
}

@end

This is category method. You must set text first, than call this method to adjust UILabel's height.

Solution 8:^[8]

You can size your label according to text and other related controls using two ways-

For iOS 7.0 and above

CGSize labelTextSize = [labelText boundingRectWithSize:CGSizeMake(labelsWidth, MAXFLOAT)
                                          options:NSStringDrawingUsesLineFragmentOrigin
                                       attributes:@{
                                                    NSFontAttributeName : labelFont
                                                    }
                                          context:nil].size;

before iOS 7.0 this could be used to calculate label size

CGSize labelTextSize = [label.text sizeWithFont:label.font 
                            constrainedToSize:CGSizeMake(label.frame.size.width, MAXFLOAT)  
                                lineBreakMode:NSLineBreakByWordWrapping];

// reframe other controls based on labelTextHeight

CGFloat labelTextHeight = labelTextSize.height;

If you do not want to calculate the size of the label's text than you can use -sizeToFit on the instance of UILabel as-

[label setNumberOfLines:0]; // for multiline label
[label setText:@"label text to set"];
[label sizeToFit];// call this to fit size of the label according to text

// after this you can get the label frame to reframe other related controls

Solution 9:^[9]

Add missing constraints in storyboard.
Select UILabel in storyboard and set the attributes "Line" to 0.
Ref Outlet the UILabel to Controller.h with id:label
Controller.m and add [label sizeToFit]; in viewDidLoad

Solution 10:^[10]

the sizeToFit() method doesn't play well with constraints, but as of iOS 9 this is all you need -

label.widthAnchor.constraint(equalToConstant: label.intrinsicContentSize.width).activate()

Solution 11:^[11]

I had a huge problems with auto layout. We have two containers inside table cell. Second container is resized depending on Item description (0 - 1000 chars), and row should be resized based on them.

The missing ingredient was bottom constraint for description.

I've changed bottom constraint of dynamic element from = 0 to >= 0.

Solution 12:^[12]

Fits everytime! :)

    name.text = @"Hi this the text I want to fit to"
    UIFont * font = 14.0f;
    CGSize size = [name.text sizeWithAttributes:@{NSFontAttributeName: font}];
    nameOfAssessment.frame = CGRectMake(400, 0, size.width, 44);
    nameOfAssessment.font = [UIFont systemFontOfSize:font];

Solution 13:^[13]

you can show one line output then set property Line=0 and show multiple line output then set property Line=1 and more

[self.yourLableName sizeToFit];

Solution 14:^[14]

There's also this approach:

[self.myLabel changeTextWithAutoHeight:self.myStringToAssignToLabel width:180.0f];

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1
Solution 2	Community
Solution 3	Community
Solution 4	codercat
Solution 5	Chris Prince
Solution 6	Doug Baker
Solution 7	Kaijay Lu
Solution 8	Kampai
Solution 9	user2941395
Solution 10
Solution 11	Bojan Tadic
Solution 12	HannahCarney
Solution 13	Dixit Akabari
Solution 14	Kampai

'UILabel - auto-size label to fit text?

Solution 1:[1]

Solution 2:[2]

Steps

Solution 3:[3]

Pin the left and top edges

Notes

Solution 4:[4]

Solution 5:[5]

Solution 6:[6]

Solution 7:[7]

Solution 8:[8]

Solution 9:[9]

Solution 10:[10]

Solution 11:[11]

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