#import  @class DXWViewController1;  @protocol DXWFlipsideViewControllerDelegate - (void)flipsideViewControllerDidFinish:(DXWViewController1 *)controller; @end @interface DXWViewController1 : UIViewController @property (assign, nonatomic) id  delegate; - (IBAction)done:(id)sender; @end

DXWViewController.m:

#import "DXWViewController1.h"  @interface DXWViewController1 ()  @end  @implementation DXWViewController1  - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];     if (self) {         // Custom initialization     }     return self; }  - (void)viewDidLoad {     [super viewDidLoad]; 	// Do any additional setup after loading the view. }  - (void)didReceiveMemoryWarning {     [super didReceiveMemoryWarning];     // Dispose of any resources that can be recreated. }  - (IBAction)done:(id)sender {     [self.delegate flipsideViewControllerDidFinish:self]; } @end