UIPickerView make in Swift iOS

How to make or create UIPickerView in swift language

What is pickerview : - UIPickerView use for user select value by rotating the wheel for his desired value.  In pickerview have rows and component for user interface .  

Going to learn UIPickerView : -  

                  Open xCode and create new project UIPickerViewSwift  and select Swift language .

Now go in ViewController.swift and create Object of picker view 

    @IBOutlet

    var pickerViewObj : UIPickerView!

  Now go in storyboard and drag and drop UIPickerView and connect to object like this :- 

also connect delegate and datasource  

adding datasource and delegate in ViewController.swift

class ViewController: UIViewController ,UIPickerViewDataSource, UIPickerViewDelegate  {

          }

Create content array that you want to show on PickerView

    var pickerValueArray = ["Welcome", "on", "our", "site", "jogendra.com"]

Add datasource and delegate function of pickerview

  func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int

    {

        return 1;

    }

    

    // returns the # of rows in each component..

    func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int

    {

        return pickerValueArray.count;

    }

//Title showing

    func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String!

    {

        return pickerValueArray[row]

    }

  For Selection value add this 

    func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)

    {

        NSLog("Value Printing %@",pickerValueArray[row]);

        

     }

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