iOS: set font size of UILabel Programmatically

Question

I'm trying to set the font size of a UILabel. No matter what value I put though the text size doesn't seem to change. Here's the code I'm using.

[self setTitleLabel:[[UILabel alloc] initWithFrame:CGRectMake(320.0,0.0,428.0,50.0)]];
[[self contentView] addSubview:[self titleLabel]];
UIColor *titlebg = [UIColor clearColor];
[[self titleLabel] setBackgroundColor:titlebg];
[[self titleLabel] setTextColor:[UIColor blackColor]];
[[self titleLabel] setFont:[UIFont fontWithName:@"System" size:36]];

score 164 · Accepted Answer · answered Jul 10 '13 at 16:14

164

Try [UIFont systemFontOfSize:36] or [UIFont fontWithName:@"HelveticaNeue" size:36] i.e. [[self titleLabel] setFont:[UIFont systemFontOfSize:36]];

answered Jul 10 '13 at 16:14

JohnVanDijk

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setFont is deprecated in iOS 10.2 – TheJeff Jan 06 '17 at 23:12

score 79 · Answer 2 · answered Mar 04 '15 at 06:27

79

Objective-C:

[label setFont: [label.font fontWithSize: sizeYouWant]];

Swift:

label.font = label.font.fontWithSize(sizeYouWant)

just changes font size of a UILabel.

answered Mar 04 '15 at 06:27

fujianjin6471

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Apparently, setFont is deprecated, so `label.font = // Whatever font.` – Rudolf Real Apr 24 '15 at 14:55
@FabricioPH how if I want to set `label.font = // whatever currently system's font` font ? – Chen Li Yong Jan 11 '16 at 02:33
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@ChenLiYong I'm not into iOS development anymore. Maybe Googling will display some relevant results about setting current system's font, or getting it. https://www.google.com/?#q=ios%20system%20font – Rudolf Real Jan 12 '16 at 08:50

score 25 · Answer 3 · edited Jun 20 '20 at 09:12

25

Swift 3.0 / Swift 4.2 / Swift 5.0

labelName.font = labelName.font.withSize(15)

edited Jun 20 '20 at 09:12

Community

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answered Dec 20 '17 at 06:52

Pranit

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score 19 · Answer 4 · answered Oct 01 '14 at 10:08

19

If you are looking for swift code:

var titleLabel = UILabel()
titleLabel.font = UIFont(name: "HelveticaNeue-UltraLight",
                         size: 20.0)

answered Oct 01 '14 at 10:08

ytbryan

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score 7 · Answer 5 · edited Jan 29 '15 at 10:05

7

This code is perfectly working for me.

  UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(15,23, 350,22)];
  [label setFont:[UIFont systemFontOfSize:11]];

edited Jan 29 '15 at 10:05

Code cracker

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answered Aug 06 '14 at 10:57

Gaurav

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Me too, [[self titleLabel] setFont:[UIFont systemFontOfSize:36]]; did not and I don't know why – Leon Jul 03 '15 at 15:57

score 5 · Answer 6 · answered Oct 08 '17 at 14:45

In Swift 3.0, you could use this code below:

let textLabel = UILabel(frame: CGRect(x:containerView.frame.width/2 - 35, y: 
    containerView.frame.height/2 + 10, width: 70, height: 20))
    textLabel.text = "Add Text"
    textLabel.font = UIFont(name: "Helvetica", size: 15.0) // set fontName and Size
    textLabel.textAlignment = .center
    containerView.addSubview(textLabel) // containerView is a UIView

score 3 · Answer 7 · edited Aug 28 '14 at 09:52

3

Its BECAUSE there is no font family with name @"System" hence size:36 will also not work ...

Check the fonts available in xcode in attribute inspector and try

edited Aug 28 '14 at 09:52

Aleksandr M

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answered Aug 28 '14 at 09:50

Chetan Kumar

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score 1 · Answer 8 · edited Sep 22 '15 at 13:54

1

For iOS 8

  static NSString *_myCustomFontName;

 + (NSString *)myCustomFontName:(NSString*)fontName
  {
 if ( !_myCustomFontName )
  {
   NSArray *arr = [UIFont fontNamesForFamilyName:fontName];
    // I know I only have one font in this family
    if ( [arr count] > 0 )
       _myCustomFontName = arr[0];
  }

 return _myCustomFontName;

 }

edited Sep 22 '15 at 13:54

Ram Vinay Yadav

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answered Sep 09 '15 at 11:15

Might be also problem of your font target membership. – Sep 25 '15 at 10:22

iOS: set font size of UILabel Programmatically

8 Answers8

Swift 3.0 / Swift 4.2 / Swift 5.0

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