Code for Text Field & UITextView Not Allowed Special Characters and Spaces in iPhone & iPad

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

{

    if(textField == aText)

   {

         if ([string isEqualToString:@"&"] || [string isEqualToString:@" "] ) 

        {

               return NO;

        }

   }

}

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

{

if(textField == TextField)

{

        

        if ([string length] == 0 && range.length > 0)

        {

            TextField.text = [TextField.text stringByReplacingCharactersInRange:range withString:string];

            return NO;

        }

        

        NSCharacterSet *nonNumberSet = [[NSCharacterSet characterSetWithCharactersInString:@"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"] invertedSet];

        if ([string stringByTrimmingCharactersInSet:nonNumberSet].length > 0)

        {

            return YES;

        }

        else

        {

            return NO;

        }

}

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text

{

    if(textView == YourReview1)

    {

        if ([text isEqualToString:@"&"]||[text isEqualToString:@" "])

        {

            return NO;

        }

        return YES;

    }

}