How to move one text field to another using keyboard return key in swift3 ios

Question

By this img with done btn to move at next textfield (https://i.stack.imgur.com/cDHlh.jpg)

Answer 1

I doubt if you can do that with the 'Done' button, but you may achieve that with the return key by

1. Make your class a UITextField Delegate

   class VC: UIVIewController, UITextFieldDelegate
   

2. In your ViewDidLoad method do this -

   textField1.becomeFirstResponder()
   

So that when user comes in this screen the 1st textfield will directly become active(not the right word but using this word for lack of better alternative)

3. And when you need it to move to the next textfield when he presses return,

   func textFieldShouldReturn(textField: UITextField) -> Bool {
       textField1.resignFirstResponder()
       if (textField == textField1){
           textField2.becomeFirstResponder()
       }
       else if (textField == textField2){
           textField3.becomeFirstResponder()
       }
       return true
   }
   

You may use a switch case too in the above delegate method. And as mentioned in the comment in the question, do go through the link and know how to properly ask questions, giving as much detail as possible.