Ggtcf

When I try to use a pickerview to select tip amount, I have to relay that information to the view controller to be used by another tableview cell. When I reload the tableview, it reconfigures the pickerview in the cell, setting the tip to 0 when another amount was chosen. if I make it so the pickerview is only configured once by a bool statement that is true only the first time it configures, the pickerview freezes after the first selection, making a second adjustment impossible. When I tried to set the "selectRow" function to be the selected row and to reconfigure on the selected row, it doesn't work with the top and bottom fields writing over each other and the ability to update the tip stops working. I have no idea what other options there are for getting it work. Seems like this shouldn't be so difficult. Here's some code:

private func configurePickerView() 
 let pickerView = UIPickerView()
 pickerView.delegate = self
 pickerView.dataSource = self
 pickerView.selectRow(selectedRow, inComponent: 0, animated: false)
 contentView.addSubview(pickerView)
 pickerView.translatesAutoresizingMaskIntoConstraints = false
 pickerView.widthAnchor.constraint(equalTo: contentView.widthAnchor, multiplier: 0.25).isActive = true
 guard let orderView = orderView else return 
 pickerView.rightAnchor.constraint(equalTo: orderView.rightAnchor, constant: -20).isActive = true
 pickerView.centerYAnchor.constraint(equalTo: orderView.centerYAnchor).isActive = true
 //let height = getSize(large: 45, medium: 45, small: 45)
 pickerView.heightAnchor.constraint(equalToConstant: 70).isActive = true



func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int 
 return tipArray.count


func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? 
 return tipArray[row]

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) 
 selectedRow = row
 let tipAsInt = switchStatement(row)
 delegate?.reloadData(tipAsInt)


private func switchStatement(_ row: Int) -> Int 
 switch row 
 case 0: return Int(round(0 * Double(subTotal)))
 case 1: return Int(round(0.05 * Double(subTotal)))
 case 2: return Int(round(0.1 * Double(subTotal)))
 case 3: return Int(round(0.15 * Double(subTotal)))
 case 4: return Int(round(0.2 * Double(subTotal)))
 default: return Int(round(0.25 * Double(subTotal)))
 

You need to make

let pickerView = UIPickerView()

and instance var , so it's delegate and dataSource are retained

Also you should call

func configurePickerView() { // call it inside awakeFromNib or init

once as not to add multiple pickers to the tableCell and when you need a refresh call

pickerView.reloadAllComponents()