sizeToFit not working on a programmatic tableview cell - ios

Question

I have a basic custom cell with a name label on the left and a price label on the right both set inside another view to customise the spacing. I want the price to change width to whatever the price is and not have it set but when i use sizetofit on the price in the cells init or the cellForRow at function nothing happens. I have looked around but cant see how to get it to work. I cant get the text size when in the init of a cell but it doesnt seem right to be setting the label size within cellForRowAt.
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: SplitterCarouselItemTableViewCell = tableView.dequeueReusableCell(withIdentifier: "splitterCarouselItemTableViewCell") as! SplitterCarouselItemTableViewCell
var item = ((allBillSplitters[tableView.tag].items)?.allObjects as! [Item])[indexPath.row]
if allBillSplitters[tableView.tag].isMainBillSplitter {
getMainBillSplitterItems(splitter: allBillSplitters[tableView.tag])
item = mainBillSplitterItems[indexPath.row]
}
let count = item.billSplitters?.count
if count! > 1 {
cell.name!.text = "\(item.name!)\nsplit \(count!) ways"
cell.price!.text = "£\(Double(item.price)/Double(count!))"
} else {
cell.name!.text = item.name!
cell.price!.text = "£\(item.price)"
}
return cell
}
and heres my cell:
import UIKit
class SplitterCarouselItemTableViewCell: UITableViewCell {
var name: UILabel!
var price: UILabel!
var view: UIView!
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:)")
}
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: "splitterCarouselItemTableViewCell")
self.setupViews()
}
func setupViews() {
let width = Int(UIScreen.main.bounds.width * 0.88)
let height = Int(self.bounds.height)
self.backgroundColor = .clear
self.frame = CGRect(x: 0, y: 0, width: width, height: 45)
view = UIView(frame: CGRect(x: 0, y: 2, width: width, height: height - 4 ))
view.backgroundColor = UIColor.white.withAlphaComponent(0.5)
price = UILabel(frame: CGRect(x: width - 80, y: 0, width: 75, height: height))
price.font = UIFont.systemFont(ofSize: 15.0)
price.backgroundColor = .yellow
price.textAlignment = .right
name = UILabel(frame: CGRect(x: 5, y: 0, width: Int(price.frame.width), height: height))
name.backgroundColor = .red
name.font = UIFont.systemFont(ofSize: 15.0)
name.numberOfLines = 0
view.addSubview(name)
view.addSubview(price)
contentView.addSubview(view)
}
}
Any help would be great, im sure im missing something basic.
Ive added the yellow and red backgrounds for visibility in the screen shot.

Answer 1

You need to calculate the width of the price label based on text. Below code will help you to find the width
extension String {
func widthWithConstrainedHeight(height: CGFloat, font: UIFont) -> CGFloat {
let constraintRect = CGSize(width: .greatestFiniteMagnitude, height: height )
let boundingBox = self.boundingRect(with: constraintRect, options: .usesLineFragmentOrigin, attributes: [NSFontAttributeName: font], context: nil)
return boundingBox.width
}
}
Use above function to find string width and use that width to create frame of price label.

Answer 2

I'm unclear if you want the frame size to adjust or the font size. This answer assumes the latter, i.e. that you want a fixed frame width and a font that shrinks as needed to fit....
Try enabling adjustsFontSizeToFitWidth,
price = UILabel(frame: CGRect(x: width - 80, y: 0, width: 75, height: height))
price.font = UIFont.systemFont(ofSize: 15.0)
price.backgroundColor = .yellow
price.textAlignment = .right
price.adjustsFontSizeToFitWidth = true
this should shrink the font to fit the width of the label.