- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
    textField.text = [NSString stringWithFormat: @" %@", textField.text];
    NSLog(@"%@",newString);
    return YES;
}