UITextView adding new line unintentionally?

One solution to solve this is when you implement the textFieldShouldReturn: delegate method, be sure to return NO, and not YES. By returning NO, the newline isn't passed on to the text field.

- (BOOL)textFieldShouldReturn:(UITextField *)textField {    // move to next field or whatever you need    [myTextView becomeFirstResponder];    return NO;}

Okay, this behaviour is due to a bug in iOS when becoming firstresponder within same run loop by using next button. To over come this you should do this manually. First resign first responder from a textFied, and then make textView as a first responder. like this. Implement this delegate method.

- (BOOL)textFieldShouldReturn:(UITextField *)textField{    [textField resignFirstResponder];    [textView performSelector:@selector(becomeFirstResponder) withObject:nil afterDelay:0.0];    return YES;}

Similar idea to performSelector, but using asynchronous dispatch queue (Swift 4 version):

func textFieldShouldReturn(_ textField: UITextField) -> Bool {   textField.resignFirstResponder()   DispatchQueue.main.async {      self.myTextView.becomeFirstResponder()   }   return true}