how to use a button to select data from pickerview (swift4) - ios

Question

I want to use a button to select the data from my picker view. Currently my code uses the button to dismiss the picker view but the button does not select anything from the picker view. The only way something is selected is if a scroll using the picker view. How can I use my button as the only way to submit the data for the picker view?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
picker.delegate = self
picker.dataSource = self
for textFieldObject in theScoreRound
{
textFieldObject.inputView = picker
let toolbar = UIToolbar(frame: CGRect(x: 0, y: UIApplication.shared.statusBarFrame.height, width: view.bounds.width, height: 44))
var items = [UIBarButtonItem]()
items.append( UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil) )
items.append( UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(self.doneAction)) )
items.append( UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil) )
toolbar.items = items
let fs = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)
let db = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.done, target: self, action: #selector(self.doneAction))
toolbar.setItems([fs,db],animated: false)
textFieldObject.inputAccessoryView = toolbar
}}
#objc func doneAction(){
view.endEditing(true)
}
public func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return numberX.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return numberX[row]
}
public func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
for textField in theScoreRound {
if textField.isEditing {
textField.text = numberX[row]
}
}
self.view.endEditing(false)
}
#IBAction func enterScore(_ sender: Any) {
var total = 0
for view in theScoreRound {
if let text = view.text, let num = Int(text) {
total += num
}
}
fighterAScore.text = String(total)
}

Answer 1

You need to use the UIPickerView selectedRow(inComponent: <#T##Int#>) method where you pass the component number in this case 0 because in your UIPickerDataSource you are returning 1 in the numberOfComponents method
Example Code
#IBAction func pickerDataAction(_ sender: Any) {
let selectedRow = self.pickerView.selectedRow(inComponent: 0)
let desiredValue = numberX[selectedRow]
}