使用 UIImage 放大滚动视图 [英] Zoom in Scroll view with UIImage

问题描述

我试图放大带有多个图像的滚动视图，滚动视图仅垂直滚动，我尝试实现多种方式，在许多示例中，但没有一个可以工作.下面是我用来创建图像和滚动视图的代码:

Im trying to zoom in a scroll view with multiple images, the scroll view only scrolls vertical, i tried to implement many ways, in many examples but none seens to work. Heres the code im using to create the images and the scroll view:

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    for (int i = 0; i < 6; i++)
    {
        UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"amap1%i.png",i+1]];
        // create imageView
        _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, _scrollView.frame.size.height*i, _scrollView.frame.size.width, _scrollView.frame.size.height)];
        // set scale to fill
        _imageView.contentMode = UIViewContentModeScaleToFill;
        // set image
        [_imageView setImage:image];
        // add to scrollView
        [self.scrollView addSubview:_imageView];
    }

    _scrollView.contentSize = CGSizeMake(_scrollView.frame.size.width, _scrollView.frame.size.height * 6);
    _scrollView.bounces = NO;
    _scrollView.pagingEnabled = YES;
}

推荐答案

看起来您需要使用 UIScrollView 为每个图像(以放大)执行 UIScrollView(以包含所有图像 - 水平滚动).

Looks like you'll need to do a UIScrollView (to contain all the images - horizontal scrolling) with a UIScrollView for each image (to zoom in).

有一个 WWDC 视频讨论了如何做到这一点(WWDC 2010 - Session 104；iTunes 链接)

There's a WWDC video which talks about how to do this (WWDC 2010 - Session 104; link to iTunes)

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