Loadex Loadex - 2 months ago 8
Swift Question

Text not vertically centered in UILabel

I've created a Label with the following code :

func setupValueLabel() {
valueLabel.numberOfLines = 1
valueLabel.font = UIFont(name: "Avenir-Black", size: 50)
valueLabel.adjustsFontSizeToFitWidth = true
valueLabel.clipsToBounds = true
valueLabel.backgroundColor = UIColor.greenColor()
valueLabel.textColor = valuesColor
valueLabel.textAlignment = NSTextAlignment.Center
}


I don't really understand why but the label is not vertically centered :
Label not centered

Do I have to do anything specific so it can be centered ?

Answer

The problem is that font size is shrunk by adjustsFontSizeToFitWidth = true, but it does not adjust the lineHeight automatically. It remains to be for original font size that is 50.

By default, the text is aligned to its baseline. you can adjust it with baselineAdjustment property.

In your case, you should set it to UIBaselineAdjustment.AlignCenters.

valueLabel.baselineAdjustment = .AlignCenters