How to know if a UITextField in iOS has blank spaces

Question

I have a UITextField where user can enter a name and save it. But, user should not be allowed to enter blank spaces in the textFiled.

1 - How can I find out,

Answer 1

Here's what I did using stringByReplacingOccurrencesOfString.

- (BOOL)validateFields
 {
      NSString *temp = [textField.text stringByReplacingOccurrencesOfString:@" "
                                                          withString:@""
                                                             options:NSLiteralSearch
                                                               range:NSMakeRange(0, textField.text.length)];

      if ([temp length] == 0) {
          // Alert view with message @"Please enter something."
          return NO;
      }
 }