Can't set default value UIPicker swift 2 - swift2

Question

I have a swift project with a custom cell from a tableview, ans inside it I have a label to display the value of a UIPicker. The UiPicker appear in the keyboard when you press the label, I wan't to be able to set default values to my UIPicker, I tried a lot of differents technics with the 2 methods :
selectRow(), without success, here is my CustomCell code :
import UIKit
class CustomCell: UITableViewCell, UIPickerViewDataSource, UIPickerViewDelegate {
#IBOutlet weak var answer: UITextField!
var delegate: QuestionSelectorCellDelegate?
var pickOption: [String] = []
var pickerView:UIPickerView = UIPickerView()
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
#IBAction func editBeginQuestionSelectorCell(sender: UITextField) {
pickerView = UIPickerView()
pickerView.delegate = self
sender.inputView = pickerView
}
func displayBlock(block: Block){
if block.answers != nil {
pickOption = block.answers! // block.answers! = ["blue","red","green"] for example
}
}
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return pickOption.count
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return pickOption[row]
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if row < pickOption.count {
answer.text = pickOption[row]
delegate?.updateQuestionSelectorCell(self, rep: pickOption[row])
}
}
}

Answer 1

Updated your code.
You didn't set the pickerView.dataSource!
If i understood your question, you want an element to be selected by default, other than element at index 0.
I also added that.
import UIKit
class CustomCell: UITableViewCell, UIPickerViewDataSource, UIPickerViewDelegate {
#IBOutlet weak var answer: UITextField!
var delegate: QuestionSelectorCellDelegate?
var pickOption: [String] = []
var pickerView:UIPickerView = UIPickerView()
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
#IBAction func editBeginQuestionSelectorCell(sender: UITextField) {
pickerView = UIPickerView()
pickerView.delegate = self
// --- Thats what I added ---
pickerView.dataSource = self
let indexOfDefaultElement = 1 // Make sure that an element at this index exists
pickerView.selectRow(indexOfDefaultElement, inComponent: 0, animated: false)
sender.inputView = pickerView
}
func displayBlock(block: Block){
if block.answers != nil {
pickOption = block.answers! // block.answers! = ["blue","red","green"] for example
}
}
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return pickOption.count
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return pickOption[row]
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if row < pickOption.count {
answer.text = pickOption[row]
delegate?.updateQuestionSelectorCell(self, rep: pickOption[row])
}
}
}