iOS app "next" key won't go to the next text field

The return key doesn't do anything special in a text field by default. You need to explicitly change the first responder:

- (BOOL)textFieldShouldReturn:(UITextField *)theTextField {    if (theTextField == self.textPassword) {        [theTextField resignFirstResponder];    } else if (theTextField == self.textUsername) {        [self.textPassword becomeFirstResponder];    }    return YES;}

I use this code that allows me to control the form behavior in the storyboard:

-(BOOL) textFieldShouldReturn:(UITextField *)textField{    if(textField.returnKeyType==UIReturnKeyNext) {        UIView *next = [[textField superview] viewWithTag:textField.tag+1];        [next becomeFirstResponder];    } else if (textField.returnKeyType==UIReturnKeyDone) {        [textField resignFirstResponder];    }    return YES;} 

All you need is to assign the order value as tag, and returnkey according to Next or Done on each input control.

for those who want to use Swift language:

class MyClass: UIViewController, UITextFieldDelegate {@IBOutlet weak var text1: UITextField!@IBOutlet weak var text2: UITextField!@IBOutlet weak var text3: UITextField!override func viewDidLoad() {    super.viewDidLoad()    text1.delegate = self    text2.delegate = self    text3.delegate = self}//....func textFieldShouldReturn(textField: UITextField) -> Bool{    if textField == self.text1 {        self.text2.becomeFirstResponder()    }else if textField == self.text2{        self.text3.becomeFirstResponder()    }else{        self.text1.becomeFirstResponder()    }    return true } //...

}

:-)