How to Set Bold and Italic on Uilabel of Iphone/Ipad

How do I set bold and italic on UILabel of iPhone/iPad?

sectionLabel.font = [UIFont fontWithName:@"TrebuchetMS-Bold" size:18];

There is a list of font names that you can set in place of 'fontWithName' attribute.The link is here

UILabel font : bold and italic

try this code...

UIFont *yourFont = [UIFont fontWithName:@"Helvetica-BoldOblique" 
                                   size:[UIFont systemFontSize]];
lblTitle.font = yourFont;

you can use also another fontName for BoldItalik like.

Optima-BoldItalic,TimesNewRomanPS-BoldItalicMT,Baskerville-BoldItalic,HelveticaNeue-BoldItalic,etc...

Set part of a UILabel's text bold and another part italic

You can do this by using NSMutableAttributedString

NSMutableAttributedString *strText = [[NSMutableAttributedString alloc] initWithString:@"Setting different for label text"];
[strText addAttribute:NSFontAttributeName
              value:[UIFont fontWithName:@"Helvetica-Bold" size:22]
              range:NSMakeRange(0, 10)];
[strText addAttribute:NSFontAttributeName
              value:[UIFont fontWithName:@"Helvetica-Italic" size:22]
              range:NSMakeRange(10, 10)];

Swift 4 code:

var strText = NSMutableAttributedString(string: "Setting different for label text")
strText.addAttribute(.font, value: UIFont(name: "Helvetica-Bold", size: 22)!, range: NSRange(location: 0, length: 10))
strText.addAttribute(.font, value: UIFont(name: "Helvetica-Italic", size: 22)!, range: NSRange(location: 10, length: 10))

Make part of a UILabel bold in Swift

You will want to use attributedString which allows you to style parts of a string etc. This can be done like this by having two styles, one normal, one bold, and then attaching them together:

let boldText = "Filter:"
let attrs = [NSAttributedString.Key.font : UIFont.boldSystemFont(ofSize: 15)]
let attributedString = NSMutableAttributedString(string:boldText, attributes:attrs)

let normalText = "Hi am normal"
let normalString = NSMutableAttributedString(string:normalText)

attributedString.append(normalString)

When you want to assign it to a label:

label.attributedText = attributedString

How to make an italic UILabel without caring about the size?

You can make use of [UIFont systemFontSize].

myLabel.attributedText = [[NSAttributedString alloc] 
                     initWithString: @"my text" 
                         attributes: @{
              NSFontAttributeName: [UIFont italicSystemFontOfSize: 
                                         [UIFont systemFontSize]]}]];

Moreover, there are few more options to choose from:

+ (CGFloat)labelFontSize;//Returns the standard font size used for labels.
+ (CGFloat)buttonFontSize;//Returns the standard font size used for buttons.
+ (CGFloat)smallSystemFontSize;//Returns the size of the standard small system font.
+ (CGFloat)systemFontSize;//Returns the size of the standard system font.

How to set a bold dynamic font type for UILabel?

Ok, it seems the documentation provides a hint. For using custom fonts, I consider a bold font as a custom font now, one can use the UIFontMetrics class.

If I pass a "bold custom font" to the scaledFontForFont method of UIFontMetrics class I get the desired result with the dynamic font type UIFontTextStyleBody.

UIFont* boldSystemFont = [UIFont boldSystemFontOfSize:17];
myLabel.font           = [[UIFontMetrics metricsForTextStyle:UIFontTextStyleBody] scaledFontForFont:boldSystemFont];

So far I only see this way using code. No idea if this could somehow be setup in the Interface Builder as well.

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