UIImage Scale Aspect Fill and Clip Subviews not working in UICollectionView

Question

I have a UICollectionView with a cell containing a single UIImageView. I'm setting the UIImageView frame.size to match the cell's frame.size and also explicitly asking the UIImageView to Scale with Aspect Fill & Clip Subview the following way in cellForItemAtIndexPath method:

let cell:UICollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as! UICollectionViewCell

... 

var imageView = UIImageView(image: self.eventImages[indexPath.row])
imageView.frame.size = cell.frame.size
cell.contentMode = UIViewContentMode.ScaleAspectFill
cell.clipsToBounds = true
imageView.contentMode = UIViewContentMode.ScaleAspectFill
imageView.clipsToBounds = true
cell.addSubview(imageView)

The result is a stretched out image (IMAGE A), but when I click (tap) the image it "magically" resolves the Aspect Fill & Clip Subviews (IMAGE B) . I can't seem to understand why this is happening only after a tap and not when loading the images for the first time. They are fetched asynchronously to a server, but the scaling only occurs after a tap of the image (there is also no tap functionality implemented).

NOTE: The UICollectionView is set up in a storyboard View Controller, both the Collection View and the Reusable Cell have Aspect Fill and Clip Subviews enabled.

IMAGE A (wrong scaling - stretched out and no cropping):

IMAGE B (correct scaling after tap):

Operate

Answer 1

It is very simple just do this:

imageView.contentMode = UIViewContentMode.ScaleAspectFill;
imageView.layer.masksToBounds = YES;

Kibosh

should be imageView.layer.masksToBounds = YES; – Pyroelectricity

what else do you see, I wrote? – Kibosh

Swift 4 = imageView.layer.maskToBounds = true – Sheriesherif

In my case, it worked when I have set width and height constraints. – Spermophyte

Answer 2

I think you should be using:

imageView.contentMode = UIViewContentMode.ScaleAspectFill
imageView.clipsToBounds = true

instead of this:

  cell.contentMode = UIViewContentMode.ScaleAspectFill
  cell.clipsToBounds = true

Tuttle

Nope, had both but also just tried commenting the cell scaling and leaving only the imageView scaling but didn't work. In the storyboard both the Collection View and the Collection Reusable Cell have Aspect Fill and Clip Subviews... Any recomendations on something different that might work in there? – Operate

In my case, it worked when I have set width and height constraints. – Spermophyte

Answer 3

[yourImageView setContentMode:UIViewContentModeScaleAspectFill]; yourImageView.layer.masksToBounds = YES;

Arabia

Answer 4

imageView.contentMode = UIView.ContentMode.scaleAspectFill imageView.layer.masksToBounds = true

Corody