Horizontal Number Picker

ViewController.swift

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {

  @IBOutlet weak var dividerPickerViewContainer: UIView!
  
  var dividerPickerView: UIPickerView = UIPickerView()
          
  override func viewDidLoad() {
    // dividerPicker
    self.dividerPickerView.delegate = self
    self.dividerPickerView.dataSource = self
    self.dividerPickerView.showsSelectionIndicator = false
    self.dividerPickerView.frame = CGRectMake(65, -70, 30, 200)
    self.dividerPickerView.transform = CGAffineTransformMakeRotation(CGFloat(-M_PI / 2))
    self.dividerPickerViewContainer.addSubview(self.dividerPickerView)
  }
  
  func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
    if pickerView == self.dividerPickerView {
      return 99;
    }
    else {
      return 0;
    }
  }
  
  func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int,
      reusingView view: UIView!) -> UIView {
  
    var label: UILabel = UILabel(frame: CGRectMake(0, 0, 30, 100))
    
    label.text = String(format:"%ld", row + 1)
    label.opaque = false;
    label.textAlignment = NSTextAlignment.Center;
    label.backgroundColor = UIColor.clearColor()
    label.textColor = UIColor.whiteColor();
    label.transform = CGAffineTransformMakeRotation(CGFloat(M_PI / 2));
    return label;
  }
}