Center NSTextAttachment image next to single line UILabel

Question

I\'d like to append an NSTextAttachment image to my attributed string and have it centered vertically.

I\'ve used the following code to create my string

Answer 1

If you have a very large ascendent and want to center the image (center of the cap height) like me try this

let attachment: NSTextAttachment = NSTextAttachment()
attachment.image = image
if let image = attachment.image{
    let y = -(font.ascender-font.capHeight/2-image.size.height/2)
    attachment.bounds = CGRect(x: 0, y: y, width: image.size.width, height: image.size.height).integral
}

The y calculation is as the picture below

Note that the y value is 0 because we want the image to shift down from the origin

If you want it to be in the middle of the whole label.Use this y value:

let y = -((font.ascender-font.descender)/2-image.size.height/2)