iphone uiscrollview 和 uiimageview - 设置初始缩放

Question

我使用以下代码将图像加载到 ScrollView 中。图像始终以 100% 缩放加载。有没有办法将其设置为加载到另一个缩放级别，比如 .37？

我试过 scrollView.zoomScale = .37 但它似乎没有用

UIImageView *tempImage = [[UIImageView alloc]initWithImage:[UIImage imageWithData:data]];
        self.imageView = tempImage;

        scrollView.contentSize = CGSizeMake(imageView.frame.size.width , imageView.frame.size.height);
        scrollView.maximumZoomScale = 1;
        scrollView.minimumZoomScale = .37;
        scrollView.clipsToBounds = YES;
        scrollView.delegate = self;

        [scrollView addSubview:imageView];

Answer 1

缩放仅在您实现 viewForZoomingInScrollView: 委托(delegate)回调时有效。

-(UIView *) viewForZoomingInScrollView:(UIScrollView *)inScroll {
  return imageView;
}