UIImage overlaps labels if it's set to .scaleAspectFill - ios

Question

My app loads images from a backend and displays them in a UITableViewCell, that contains a UIImageView to display it and some labels and buttons.
I've added the suggested contraints to the UITableViewCell with the 'Reset to suggested contraints' option.
Here's some of the code after retrieving the data:
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = PostTableViewCell()
if (self.posts.count == 0) { return cell }
let post = posts[indexPath.row]
// Instancia o reuse identifier
if post["post_image"] != nil {
cell = tableView.dequeueReusableCell(withIdentifier: Storyboard.PostWithImage, for: indexPath) as! PostTableViewCell
} else {
cell = tableView.dequeueReusableCell(withIdentifier: Storyboard.PostWithoutImage, for: indexPath) as! PostTableViewCell
}
return cell
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
var cell = PostTableViewCell()
cell = tableView.dequeueReusableCell(withIdentifier: Storyboard.PostWithImage) as! PostTableViewCell
return cell.bounds.size.height;
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
var cell = PostTableViewCell()
cell = tableView.dequeueReusableCell(withIdentifier: Storyboard.PostWithImage) as! PostTableViewCell
return cell.bounds.size.height;
}
private func configureCell(cell: PostTableViewCell, atIndexPath indexPath: IndexPath) {
cell.queue.cancelAllOperations()
let operation: BlockOperation = BlockOperation()
operation.addExecutionBlock { [weak operation] () -> Void in
DispatchQueue.main.sync(execute: { [weak operation] () -> Void in
if (operation?.isCancelled)! { return }
let post = self.posts[indexPath.row]
cell.accessibilityIdentifier = post.recordID.recordName
guard let postTitle = post["post_title"], let postBody = post["post_body"] else {
return
}
if let asset = post["post_image"] as? CKAsset {
self.imageCache.queryDiskCache(forKey: post.recordID.recordName, done: { (image, cachetype) in
if image != nil {
cell.postImageView.contentMode = .scaleAspectFill
cell.postImageView.autoresizingMask = [.flexibleBottomMargin,
.flexibleHeight,
.flexibleLeftMargin,
.flexibleRightMargin,
.flexibleTopMargin,
.flexibleWidth ];
cell.postImageView.image = image!
} else {
do {
let data = try Data(contentsOf: asset.fileURL)
let image = UIImage(data: data)
cell.postImageView.contentMode = .scaleAspectFill
cell.postImageView.autoresizingMask = [.flexibleBottomMargin,
.flexibleHeight,
.flexibleLeftMargin,
.flexibleRightMargin,
.flexibleTopMargin,
.flexibleWidth ];
cell.postImageView.image = image!
self.imageCache.store(image!, forKey: post.recordID.recordName)
} catch {
print("Error 1001 = \(error.localizedDescription)")
}
}
})
}
cell.titleLabel.text = postTitle as? String
cell.bodyLabel.text = postBody as? String
})
}
cell.queue.addOperation(operation)
}
Here's some prints from the app itself that shows the image overlapping over the labels.
It only overlaps if the image is in portrait mode, if the image was taken in landscape it suits well.
What's the best way to bypass this issue?

Answer 1

You can programmatically tell the image to draw only in the given image area. If your constraints are working properly and it is staying the correct size, the image may just be drawing beyond the View bounds because of the .scaleAscpedtFill setting.
Do this by using .clipToBounds = true.
cell.postImageView.clipToBounds = true
Or, you can set it in interface builder as well, per the image below.
Give that a try and see if that helps?