UIPickerView Configuration

Step by Step to Config UIPickerView on your ViewController - SWIFT

Step 01

Initialize UIPickerView on your ViewController.

  let statusPicker = UIPickerView()

Step 02

Add Picker list in to your ViewController

  let statusList : [String] = ["Pending","Approved","Rejected"]

Step 03

Connect UIPickerView Delegate and DataSource

    func configPicker() {
        self.status.inputView = self.statusPicker
        self.statusPicker.delegate = self
        self.statusPicker.dataSource = self
        self.statusPicker.autoresizingMask = [.flexibleWidth,.flexibleHeight]
    }

Step 04

Add inputAccessoryView to the TextField.

func addToolBar() {
        let toolbarStatus = UIToolbar()
        toolbarStatus.sizeToFit()
        
        let doneStatusButton = UIBarButtonItem(barButtonSystemItem: .done, target: nil, action: #selector(doneSelect))
        let spaceButton3 = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)
        toolbarStatus.setItems([spaceButton3, doneStatusButton], animated: false)
        
        self.status.inputAccessoryView = toolbarStatus
    }

Step 05

Add Selector for Done Button.

  @objc func doneDateSelect() {
        self.view.endEditing(true)
   }

Step 06

Add UIPickerViewDataSource and UIPickerViewDelegate

    extension YourViewController: UIPickerViewDataSource {
    
      func numberOfComponents(in pickerView: UIPickerView) -> Int {
          return 1
      }
    
      func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
          if pickerView == self.statusPicker {
              return self.statusList.count
          } else {
              return 0
          }
      }
    
      func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
          if pickerView == self.statusPicker {
              return self.statusList[row]
          } else {
              return nil
          }
      }
    
  }

  extension YourViewController: UIPickerViewDelegate {
    
      func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
          if pickerView == self.statusPicker {
              self.status.text! = self.statusList[row]
          }
      }
    
  }

Step 07

Add addToolBar() and configPicker() to viewDidLoad()

  override func viewDidLoad() {
        super.viewDidLoad()
        self.addToolBar()
        self.configPicker()
   }