Made the alert view conform to the UITextFieldDelegate protocol, and set itself as the delegate on the textfields it creates.
Set the return key type to Done for every textfield when you add it because it is the last field.
After adding a new textfield, and if there are other fields present, set the prior field's return key type to Next.
Implement the textFieldShouldReturn: delegate method, and if the field is the last field dismiss the keyboard, otherwise get the next field and make it the first responder - for much faster and more user-friendly form navigation.