How to change Button text size in iOS 8 swift

Question

I have got a button with a layout outletLeaderboard. I want to change his text size by the code, so this is what I wrote:

outletLeaderboard.font =  UIFont(name: outletLeaderboard.font.fontName, size: 37)

and then I get an error:

'font' is unavailable: APIs deprecated as of iOS 7 and earlier are unavailable in Swift

What is the correct line I need to write?

Solution 1

Use titleLabel instead of .font

outletLeaderboard.titleLabel!.font =  UIFont(name: "HelveticaNeue-Thin", size: 20)

Solution 2

Try

outletLeaderboard.titleLabel?.font = UIFont(name: outletLeaderboard.font.fontName, size: 37)

Solution 3

Simply access the title label of the button. For example:

button.titleLabel?.font = UIFont(name: "Arial-MT", size: 15)

Solution 4

With Swift 3:

if let titleLabel = outletLeaderboard.titleLabel {
    titleLabel.font = UIFont(name: titleLabel.font.fontName, size: 16)
}

or even better an extension:

extension UIButton {
    func set(fontSize: CGFloat) {
        if let titleLabel = titleLabel {
             titleLabel.font = UIFont(name: titleLabel.font.fontName, size: fontSize)
        }
    }
}

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Comments

[Eliko]

My font name is costumed: Helvetica Neue Thin. How do I write it in the code line?

[Eliko]

I still get that error: 'font' is unavailable: APIs deprecated as of iOS 7 and earlier are unavailable in Swift

[Eliko]

What if my font name is costumed: Helvetica Neue Thin. How do I write it in the code line?

[Bierbarbar]

Your Button already have this costumed font ? Then try : ` button.titleLabel?.font = UIFont(descriptor:(button.titleLabel?.font.fontDescriptor())‌​!, size: 15) `