How do I add multiple components to a PickerView?

Question

It may be a simple question but how do I add multiple components to a UIPickerView? I use NSMutableArray to populate one component but I dont know how to populate the others

Answer 1

Here is the swift3 code.Here I am assigning values of multiple picker view to a UITextField.

var pickOption = [["1", "2", "3","4","5","6","7","8","9"], ["0","1","2", "3","4","5","6"],["0","1","2", "3","4","5","6"]]
@IBOutlet weak var travellersTextField: UITextField!

override func viewDidLoad() {
    super.viewDidLoad()
    let pickerView = UIPickerView()
    pickerView.delegate = self
    travellersTextField.inputView = pickerView
}

func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return pickOption.count
}

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return pickOption[component].count
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return  pickOption[component][row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    let adult = pickOption[0][pickerView.selectedRow(inComponent: 0)]
    let child = pickOption[1][pickerView.selectedRow(inComponent: 1)]
    let infant = pickOption[2][pickerView.selectedRow(inComponent: 2)]

    travellersTextField.text = adult + " adults," + child + " children," + infant + " infants"
    travellersTextField.becomeFirstResponder()

}