How to show multiple UITextField within UIalertView ios

Create alertview to show

UIAlertView *dialog = [[UIAlertView alloc] initWithTitle:@"Please enter" message:nil delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];

    [dialog setAlertViewStyle:UIAlertViewStyleLoginAndPasswordInput];   

    [[dialog textFieldAtIndex:1] setSecureTextEntry:NO];

    [[dialog textFieldAtIndex:0] setPlaceholder:@"User Name"];

    [[dialog textFieldAtIndex:1] setPlaceholder:@"Email Id"];

    [dialog show];

This is the delegate method to catch the user input

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{    

         [alertView dismissWithClickedButtonIndex:0 animated:YES];

        if (buttonIndex == 0) {

           //cancel clicked

        }else {

                     

            NSString *name = [[alertView textFieldAtIndex:0].text stringByTrimmingCharactersInSet:

                    [NSCharacterSet whitespaceCharacterSet]];   

            NSString *email = [[alertView textFieldAtIndex:1].text stringByTrimmingCharactersInSet:

                     [NSCharacterSet whitespaceCharacterSet]];

           

        }      

}