PagingScrollView.mm

    UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.view.bounds), CGRectGetHeight(self.view.bounds))];
    scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    scrollView.pagingEnabled = YES;
    [self.view addSubview:scrollView];
    
    NSArray *images = @[@"image1", @"image2", @"image3"];
    [images enumerateObjectsUsingBlock:^(NSString *imageName, NSUInteger idx, BOOL *stop) {
        UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:imageName]];
        imageView.frame = CGRectMake(idx * CGRectGetWidth(self.view.bounds), 0, CGRectGetWidth(self.view.bounds), CGRectGetHeight(self.view.bounds));
        [self.scrollView addSubview:imageView];
    }];
    
    self.scrollView.contentSize = CGSizeMake([images count] * CGRectGetWidth(self.view.bounds), CGRectGetHeight(self.view.bounds));