Layout programmatically created UILabels in a UIView - swift

Question

I have this:
Created via this piece of code:
// Add hashtag collection to a post
func addHashtags(container: UIView, constraint: NSLayoutConstraint) -> Void {
let screenSize: CGRect = UIScreen.main.bounds
let screenWidth = screenSize.width - 16 - 16
var currentOriginX: CGFloat = 0
var currentOriginY: CGFloat = 0
for j in 0..<self.pseudo.count {
if currentOriginY < 144 {
// Create a new label
let labelHashtag = RoundedLabel()
labelHashtag.rounded = true
tagLabels.append(labelHashtag)
print(tagLabels.count)
// Set its properties (title, colors, corners, etc)
labelHashtag.text = pseudo[j] as? String
labelHashtag.font = UIFont.systemFont(ofSize: 12, weight: .semibold)
labelHashtag.textAlignment = .center
labelHashtag.textColor = UIColor.black
labelHashtag.backgroundColor = UIColor.white
labelHashtag.layer.borderColor = UIColor(red:0.88, green:0.88, blue:0.88, alpha:1.0).cgColor
labelHashtag.layer.borderWidth = 1
// Set its frame width and height
labelHashtag.frame.size.width = labelHashtag.intrinsicContentSize.width + tagPadding
labelHashtag.frame.size.height = tagHeight
// Add it to the scroll view
container.addSubview(labelHashtag)
// If current X + label width will be greater than container view width
// .. move to next row
if (currentOriginX + labelHashtag.frame.width > screenWidth) {
tagLabels[0].textColor = .red
print("übrig")
print(screenWidth - currentOriginX)
currentOriginX = 0
currentOriginY += tagHeight + tagSpacingY
}
// Set the btn frame origin
labelHashtag.frame.origin.x = currentOriginX
labelHashtag.frame.origin.y = currentOriginY
// Increment current X by btn width + spacing
currentOriginX += labelHashtag.frame.width + tagSpacingX
} else if currentOriginY == 90 {
}
// Update container view height
constraint.constant = currentOriginY + tagHeight
}
container.layoutIfNeeded()
}
I want to center all items in each row. I imagine I have to calculate the remaining width of my UIView and add a margin to the first item.
How can I add a margin to my UILabel? I can access it via tagLabels[0] and I think I know how to calculate the remaining width, but I don't know how I can add the margin to it.