UITableViewCell how to add solid border with rounded corners

Question

I want to add a table with a solid border with rounded corners: .

I have tried using a CALayer, which can be called making the cell and adds rounded corners:

  let maskLayer = CALayer()
  maskLayer.cornerRadius = 10   //if you want round edges
  maskLayer.backgroundColor = UIColor.white.cgColor
  maskLayer.borderColor = UIColor.red.cgColor
  maskLayer.borderWidth = 5
  self.layer.borderColor = UIColor.red.cgColor // no change
  self.layer.borderWidth = 5 // no change
  maskLayer.frame = CGRect(x: self.bounds.origin.x, y: self.bounds.origin.y, width: self.bounds.width, height: self.bounds.height).insetBy(dx: horizontalPadding/2, dy: verticalPadding/2)
  self.layer.mask = maskLayer

I have tried adding borders, but the rounded corners look very messy. How would I add rounded corners and a solid border?

I have looked at this question which talks about changing border colours, but it does not give the cells a rounded border like in the image above. Only the top and bottom have a rounded border.

Answer 1

I'm not sure how to do it with CALayer(). I Always make a cell with 2 UIViews. 1 "background view" behind the other. This will also create a border. This will have the same result as far as I'm aware. Could this be what you're looking for?

class TableViewCell: UITableViewCell {

var viewBackground = UIView()
var viewBackgroundBorder = UIView()

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
    super.init(style: style, reuseIdentifier: reuseIdentifier)
        backgroundColor = .clear
        viewBackground.backgroundColor = UIColor.white
        viewBackgroundBorder.backgroundColor = UIColor.red
        viewBackgroundBorder.layer.cornerRadius = 10
        viewBackground.layer.cornerRadius = 9 

        addSubview(viewBackgroundBorder)
        addSubview(viewBackground)

        viewBackgroundBorder.translatesAutoresizingMaskIntoConstraints = false
        viewBackground.translatesAutoresizingMaskIntoConstraints = false

        let constraints = [
            viewBackgroundBorder.topAnchor.constraint(equalTo: topAnchor, constant: 0),
            viewBackgroundBorder.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 0),
            viewBackgroundBorder.trailingAnchor.constraint(equalTo: trailingAnchor, constant: 0),
            viewBackgroundBorder.bottomAnchor.constraint(equalTo: bottomAnchor, constant: 0),

            viewBackground.topAnchor.constraint(equalTo: topAnchor, constant: 2),
            viewBackground.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 2),
            viewBackground.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -2),
            viewBackground.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -2)]

            NSLayoutConstraint.activate(constraints) 
    }

   required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
   }
}