Save UIPickerView selection to NSUserDefaults swift - ios

Question

I am trying to save the user's selection from UIPickerView to NSUserDefaults. I have found answers in obj-c but not swift. Here is my UIPickerView code:
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return pickerData.count
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
return pickerData[row]
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
race = pickerData[row]
}
And when you press a save button, it is supposed to save what is selected to NSUserDefaults. Here is my saving code:
#IBAction func save(sender: AnyObject) {
var defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults()
defaults.setObject(race, forKey: "race")
}
When I try to display the text on a label, it shows up blank:
override func viewDidLoad() {
super.viewDidLoad()
self.raceLabel.text = defaults.objectForKey("race") as? String
Let me know if my question needs any clarification, thanks.

Answer 1

Update your code as specified below and it will work
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
race = row
}
Every time you select a row, this function is called and the argument of the parameter row represents the row that was selected in your UIPickerView.
If you assign pickerData[row] value to race, you are assigning a value from your pickerData array at the index number represented by the row selected in your UIPickerView Object.