So I have an array made of strings, and when the user presses on my textfield, it shows a PickerView using the array.
I would like the PickerView to show the contents of the array in alphabetical order. But I have no idea how to do this, and cannot find anywhere online how to do it in Swift. Can someone please help?
Thanks in advance!
MY CODE:
import UIKit
class ViewController: UIViewController, UITextFieldDelegate, UIPickerViewDataSource, UIPickerViewDelegate {
@IBOutlet var questionLabel: UILabel!
@IBOutlet var buttonLabel: UIButton!
@IBOutlet var myBackgroundView: UIImageView!
@IBOutlet var questionTextField: UITextField!
let questions = ["Where are you going?", "Which city?", "When do you go?"]
var currentQuestionIndex = 0
let placeholder = ["Country", "City", "Date"]
var currentPlaceholderIndex = 0
@IBAction func nextButton(sender: AnyObject) {
// Initial setup on button press
questionTextField.hidden = false
barImage.hidden = false
// Reset text field to have no text
questionTextField.text = ""
// Displays the questions in array and displays the placeholder text in the textfield
if currentQuestionIndex <= questions.count && currentPlaceholderIndex <= placeholder.count {
questionLabel.text = questions[currentQuestionIndex]
questionTextField.placeholder = placeholder[currentPlaceholderIndex]
currentQuestionIndex++
currentPlaceholderIndex++
buttonLabel.setTitle("Next", forState: UIControlState.Normal)
// Animate text for questionLabel
UIView.animateWithDuration(1.0, delay: 0.0, usingSpringWithDamping: 0.9, initialSpringVelocity: 0.5, options: nil, animations: {
self.questionLabel.center = CGPoint(x: -110 , y: 305 + 20)
}, completion: nil)
} else {
performSegueWithIdentifier("countdownSegue", sender: self)
//Add some logic here to run whenever the user has answered all the questions.
}
}
var countryPicker = ["France", "Germany", "Spain", "Northern Ireland", "Austria"]
var sortedArray = sorted(countryPicker)
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// Hides the text field
questionTextField.hidden = true
questionTextField.delegate = self
// Sets the button text
buttonLabel.setTitle("Get started", forState: UIControlState.Normal)
// Sets the question text to be blank
questionLabel.text = ""
// Sets placeholder text in the text field
questionTextField.placeholder = ""
var pickerView = UIPickerView()
pickerView.delegate = self
questionTextField.inputView = pickerView
}
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return countryPicker.count
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
return countryPicker[row]
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
questionTextField.text = countryPicker[row]
}
// resigns the keyboard when user presses the return/next key on keyboard
func textFieldShouldReturn(textField: UITextField) -> Bool {
questionTextField.resignFirstResponder()
return true
}
// Resigns the keyboard if the user presses anywhere on the screen
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
self.view.endEditing(true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
