iPhone how to get UITextField’s text while typing?

First add one UITextField and UILabel to storyboard / nib

Now assign IBOutlet for UILabel (Here I have used myLabel)

Assign UITextFieldDelegate to file owner, also implement the same delegate in .h file

Use these lines of code:

 - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
 {
     NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
     [self updateTextLabelsWithText: newString];

     return YES;
 }

 -(void)updateTextLabelsWithText:(NSString *)string
 {
      [myLabel setText:string];
 }