Control should switch automatically after the user is done entering the text in UITextField

In my app i have two textfields and i want the control from one text field to switch to second control as soon as the user is done entering the values in the first textfi开发者_Go百科eld automatically.

Does anybody has any idea on this?

Thanks,

I assume "done entering" means the user hits return, ... button on keyboard.

UITextField has delegate with UITextFieldDelegate protocol. And here's method ...

- (BOOL)textFieldShouldReturn:(UITextField *)textField

... you can implement it in this way ...

...
self.myFirstTextField.delegate = self;
self.mySecondTextField.delegate = self;
...

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
  if ( textField == self.myFirstTextField ) {
    // User hits return key on keyboard when editing first textfield
    [mySecondTextField becomeFirstResponder];
  } else if ( textField == self.mySecondTextField ) {
    // User hits return key on keyboard when editing second textfield
    // This simply removes focus from the second textfield and hides keyboard
    [mySecondTextField resignFirstResponder];
  }
  return YES;
}

If "done entering" is not return, ... button on keyboard, you can implement this delegate's method ...

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

... to check UITextField's text when user did type.