You can do it like this:
label.font = UIFont(name: label.font.fontName, size: 20)
Or like this:
label.font = label.font.withSize(20)
This will use the same font. 20 can be whatever size you want of course.
Note: The latter option will overwrite the current font weight to regular
so if you want to preserve the font weight use the first option.
Swift 3 Update:
label.font = label.font.withSize(20)
Swift 4 Update:
label.font = label.font.withSize(20)
or
label.font = UIFont(name:"fontname", size: 20.0)
and if you use the system fonts
label.font = UIFont.systemFont(ofSize: 20.0)
label.font = UIFont.boldSystemFont(ofSize: 20.0)
label.font = UIFont.italicSystemFont(ofSize: 20.0)
I think the best way to do this - if keeping the same font that is already assigned to the UILabel
would be:
(using Swift)
label.font = label.font.fontWithSize(20)
(using Swift 3)
label.font = label.font.withSize(20)
Ideally I would set this in the viewDidLayoutSubviews
method, as it doesn't need to change every time the view appears.
label.font = UIFont.systemFontOfSize(20)
We can set font as per our requirement like,
label.font = UIFont(name: "Avenir-Light", size: 15.0)
label.font = UIFont.boldSystemFontOfSize(15)
label.font = UIFont.italicSystemFontOfSize(15)
label.font = UIFont.systemFontOfSize(17)
If you want just change size of your font i create this extension
// Add extension
extension UILabel {
func setSizeFont (sizeFont: Double) {
self.font = UIFont(name: self.font.fontName, size: sizeFont)!
self.sizeToFit()
}
}
// Use
myLabel.setSizeFont(60)
You can give like this also
labelName.font = UIFont(name: "systemFont", size: 30)
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