在UIView中放大多个UIImageViews的问题

Question

所以我知道这已被多次发布（我已经广泛搜索了这个网站以及许多其他资源以获得无效答案：C）

我对iOS编程比较陌生，我正在努力使图像查看器具有缩放和平移功能。基于只是寻找答案，我得出结论，我应该建立一个像这样的结构：

- UIViewController
- - UIView
- - - UIScrollView (paginated)
- - - - UIView
- - - - - UIScrollView
- - - - - - UIImageView
- - - - - UIScrollView
- - - - - - UIImageView
- - - - - UIScrollView
- - - - - - UIImageView
- - - - - ...

我已经干预了我的代码，但我无法让缩放和平移正确，或者什么都不会发生，或者缩放会导致整个画廊跳转。到目前为止，我所构建的是一个简单的图库，其代码如下。您可以通过创建一个新的单视图应用程序并将 ViewController.m 中的代码替换为下面的代码来轻松测试。

在下面的文件中：，结构如下：

- UIViewController
- - UIView
- - - UIScrollView (Scroller)
- - - - UIView (mainView)
- - - - - UIScrollView (SubScroller)
- - - - - - UIImageView (ImgView)
- - - - - UIScrollView (SubScroller)
- - - - - - UIImageView (ImgView)
- - - - - UIScrollView (SubScroller)
- - - - - - UIImageView (ImgView)
- - - - - ...

ViewController.m

#import "ViewController.h"

@interface ViewController () {
    BOOL statusBarHidden ;
    UIView *mainView;
}

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    statusBarHidden = NO;

    NSMutableArray *images = [[NSMutableArray alloc] init];
    [images addObject:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://img.mangastream.to/manga/one-piece/001/OP%20Cover%2001.jpg"]]]];
    [images addObject:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://img.mangastream.to/manga/one-piece/001/OP001-01.jpg"]]]];
    [images addObject:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://img.mangastream.to/manga/one-piece/001/OP001-01.jpg"]]]];
    [images addObject:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://img.mangastream.to/manga/one-piece/001/OP001-01.jpg"]]]];

    //How many pages do we want?
    int PageCount = images.count;

    //Setup scroll view
    UIScrollView *Scroller = [[UIScrollView alloc] initWithFrame:[self.view frame]];

    Scroller.backgroundColor = [UIColor purpleColor];
    Scroller.pagingEnabled = YES;
    Scroller.userInteractionEnabled = YES;
    Scroller.contentSize = CGSizeMake(PageCount * Scroller.bounds.size.width, Scroller.bounds.size.height);

    Scroller.delegate = self;
    Scroller.maximumZoomScale = 4.0;
    Scroller.minimumZoomScale = 0.75;

    //Setup Each View Size
    CGRect ViewSize = Scroller.bounds;

    mainView = [[UIView alloc]initWithFrame:ViewSize];
    CGRect mainViewSize = mainView.bounds;

    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doThis:)];
    [Scroller addGestureRecognizer:tap];

    for(id image in images) {
        UIScrollView *SubScroller = [[UIScrollView alloc] initWithFrame:mainViewSize];

        CGRect SubViewSize = SubScroller.bounds;

        UIImageView *ImgView = [[UIImageView alloc] initWithFrame:SubViewSize];
        [ImgView setImage:image];
        [ImgView setContentMode: UIViewContentModeScaleAspectFit];

        [SubScroller addSubview:ImgView];
        [mainView addSubview:SubScroller];

        mainViewSize = CGRectOffset(mainViewSize, Scroller.bounds.size.width, 0);
}
    [Scroller addSubview:mainView];
    [self.view addSubview:Scroller];
    [Scroller setContentOffset:CGPointMake(Scroller.frame.size.width * (PageCount - 1), 0.0f) animated:NO];
}

- (void)doThis:(UIGestureRecognizer*)tap {
    if(statusBarHidden == NO) {
        [self.navigationController setNavigationBarHidden:YES animated:YES];
        [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
        statusBarHidden = YES;
    } else {
        [self.navigationController setNavigationBarHidden:NO animated:YES];
        [[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationSlide];
        statusBarHidden = NO;
    }

}

-(BOOL)prefersStatusBarHidden {
    return YES;
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
    return mainView;
} 

@end

提前非常感谢你！