How to use two UIPickerViews in one view controller?

Here is my solution:

• in the storyboard, add two UIPickerView instances to your view
• set the first picker’s tag as 1 and set 2 for the second picker under the “Attributes Inspector”
• control + drag from each picker to the top yellow view controller icon and choose dataSource. Repeat the same choosing delegate

• add UIPickerViewDataSource and UIPickerViewDelegate to your view controller:

  class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
  

• in your view controller class, create empty arrays for the pickers:

  var picker1Options = []
  var picker2Options = []
  

• In viewDidLoad(), populate the arrays with your content:

  picker1Options = ["Option 1","Option 2","Option 3","Option 4","Option 5"]
  picker2Options = ["Item 1","Item 2","Item 3","Item 4","Item 5"]
  

• implement the delegate and data source methods:

  func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
      return 1
  }
  
  func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
      if pickerView.tag == 1 {
          return picker1Options.count
      } else {
          return picker2Options.count
      }
  }
  
  func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
      if pickerView.tag == 1 {
          return "\(picker1Options[row])"
      } else {
          return "\(picker2Options[row])"
      }
  }