在iOS布局（或快速）中对齐和锚定图像

Question

I have two images and I would like to align horizontally, but the second image, but the second image must be aligned and anchored at the bottom of the first image, I post a picture to understand it better.

Picture here

I think there isn't method to do so via the xcode editor.

Thanks guys!

Edit: (I accidentally deleted my comment and I can not comment)

@Rory McKinnel I did it thanks, now the problem is when the screen has a different size, because the images get bigger but I can not change the offset value setted in the layout editor of xcode. I have do this:

class TopRow: UITableViewCell { 
   @IBOutlet weak var imgTop: UIImageView!
   @IBOutlet weak var OffsetWhiteCircle: NSLayoutConstraint!
   @IBOutlet weak var imgWhiteCircle: UIImageView!  
   override func awakeFromNib() {
        super.awakeFromNib()  
        let heightImgWhite = imgWhiteCircle.frame.size.height
        let div = Float(heightImgWhite / -2)
        OffsetWhiteCircle.constant = CGFloat(div)
} 

Answer 1

Align image 2 with image 1 centres horizontally.

Anchor the top edge of image 2 to be the bottom edge of image 1 with an offset equal to half the image 2 height. This will make image 2 show half way up from the bottom of image 1.

That should give you what you have in the diagram.

This relies on image 2 always having the same height. If the height of image 2 can change, you could link the offset constraint to an IBOutlet and set the offset in your code when you know the image size.