问在Xcode4.6中使用UIScrollView

EN

@interface ViewController : UIViewController <UIScrollViewDelegate>
    @property (strong, nonatomic) IBOutlet UIScrollView *scrollView;
@end

- (void)viewDidLoad { 
[super viewDidLoad];
self.scrollView.delegate = self;

// Init an array with 3 images
subviewArray = [[NSMutableArray alloc] initWithObjects:@"image1.jpg", @"image2.jpg", @"image3.jpg", nil];

for (int i = 0; i < [subviewArray count]; i++) {
    //We'll create a View object in every 'page' of our scrollView.
    CGRect frame;
    frame.origin.x = self.scrollView.frame.size.width * i;
    frame.origin.y = 0;
    frame.size = self.scrollView.frame.size;

    UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame];
    imageView.image = [UIImage imageNamed:[subviewArray objectAtIndex:i]];
    [self.scrollView addSubview:imageView];
}

NSLog(@"%f", self.scrollView.frame.size.width);

//Set the content size of our scrollview according to the total width of our imageView objects.
self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * [subviewArray count], self.scrollView.frame.size.height);
}