CODEWITHSUNDEEP
iosuitableview
john doe
john doe

Reputation: 9660

Fixed Size for UIImageView Inside UITableViewCell in iOS 11

I am using the default UITableViewCell which comes with UIImageView, titleLabel and also a description Label. I want to have a fixed size for my UIImageView so all the images are of the same size. At present it looks like this:

enter image description here

The row height for the cell is "Automatic" and here are the properties of the UITableView.

enter image description here

How can I make my UIImageView fixed size?

The images are downloaded asynchronously as shown below: 

  override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
        let dish = self.dishes[indexPath.row]
        cell.textLabel?.text = dish.title
        cell.imageView?.image = UIImage(named: "placeholder")

        cell.detailTextLabel?.text = dish.description

        cell.imageView?.setImageFor(url: URL(string: dish.imageURL)!) { image in
            cell.imageView?.image = image
            cell.imageView?.translatesAutoresizingMaskIntoConstraints = false
            cell.imageView?.widthAnchor.constraint(equalToConstant: 50)
            cell.imageView?.heightAnchor.constraint(equalToConstant: 50)
            cell.setNeedsLayout()
        }

        return cell

    }

UIImageView+Additions.swift

func setImageFor(url :URL, completion: @escaping (UIImage) -> ()) {

        DispatchQueue.global().async {

            let data = try? Data(contentsOf: url)

            if let data = data {

                let image = UIImage(data: data)

                DispatchQueue.main.async {

                    completion(image!)

                }
            }
        }
    }

enter image description here

Upvotes: 1

Views: 2797

Answers (1)

Glenn Posadas
Glenn Posadas

Reputation: 13283

You are trying to change the height anchor and width anchor of your UIImageView inside your completion block handler. You should not do that, and if you need to, make sure you are updating your layout in the main thread.

Your UIImageView's top, bottom, leading, and trailing anchor might be equal to the superView, in your case, it's the tableViewCell and given that your UITableViewCells have auto height. These result to unequal size of your UIImageView.

Since you are using interface builder, try to layout your UIImageView like so:

enter image description here

As you can see, I have my fixed width and height of my UIImageView.

Lastly, don't forget to set your UIImageView's contentMode and tick clipToBounds to yes.

Upvotes: 1

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