LineHeight, as shown in the image, is the height of a single text line including the font size too.
UILabel + LineHeight
Unfortunately, iOS native APIs won’t make anything available to the developer to set up the LineHeight within a UILabel. Apple offers two very powerful classes to solve this issue, which are NSMutableAttributedString and NSMutableParagraphStyle
As specified by Apple records:
The NSMutableParagraphStyle class adds methods to its superclass, NSParagraphStyle, for changing the values of the subattributes in a paragraph style attribute. See the NSParagraphStyle and NSAttributedString specifications for more information.
NSMutableParagraphStyle provides lineSpacing, which will be our solution.
LineSpacing allows the developer to apply a desired lineHeight to a text line.
I created an UILabel extension implementing a specific feature, setLineHeight(lineHeight: CGFloat), to complement this feature inside a UILabel.
This is the code fragment to implement within your projects: