图像数组在UIScrollview和Paging中成功显示，但无法在scrollview中正确放大图像 [英] Array of Images display in UIScrollview and Paging successfully but cannot properly zoom-in images in scrollview

问题描述

我正在使用ImageArray处理UIScrollview。滚动和分页工作正常，但我无法缩放每个图像。我的图像代码Scrollview如下： -

I am working on UIScrollview with ImageArray. Scrolling and paging are working but I not able to zoom each image. My code of image Scrollview is below :-

#define IMAGE_WIDTH 320

#define IMAGE_HEIGHT 360

 - (void)viewDidLoad
 {
[super viewDidLoad];

// TODO – fill with your photos
NSArray *photos = [[NSArray arrayWithObjects:
                    [UIImage imageNamed:@"photo1m.jpg"],
                    [UIImage imageNamed:@"photo2m.jpg"],
                    [UIImage imageNamed:@"photo3m.jpg"],
                    [UIImage imageNamed:@"photo4m.jpg"],
                    nil] retain];
// note that the view contains a UIScrollView in aScrollView

    int i=0;
    for ( NSString *image in photos )
    {
       UIImage *images = [photos objectAtIndex:i];
       imageView = [[UIImageView alloc] initWithImage:images];
       imageView.contentMode = UIViewContentModeScaleAspectFit;
       imageView.clipsToBounds = YES;

       imageView.frame = CGRectMake( IMAGE_WIDTH * i++, 0, IMAGE_WIDTH, IMAGE_HEIGHT);

       [self.scrollViewimages addSubview:imageView];
      [imageView release];
     }
      self.scrollViewimages.contentSize = CGSizeMake(IMAGE_WIDTH*i, IMAGE_HEIGHT);
      self.scrollViewimages.delegate = self; 
 }

需要帮助实现每张图像的缩放缩放。请帮忙！

Need to help for implementing pinch zoom of every images. Please help !

推荐答案

for ( NSString *image in photos )
    {
       UIImage *images = [photos objectAtIndex:i];
       imageView = [[UIImageView alloc] initWithImage:images];
       imageView.contentMode = UIViewContentModeScaleAspectFit;
       imageView.clipsToBounds = YES;
       imageView.tag = 1;

       UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake( IMAGE_WIDTH * i++, 0, IMAGE_WIDTH, IMAGE_HEIGHT)];
       scrollView.delegate = self;
       scrollView.maximumZoomScale = 3.0f
       imageView.frame = scrollView.bounds;
       [scrollView addSubview:imageView];
       [imageView release];

       [self.scrollViewimages addSubview:scrollView];

     }

并在UIScrollViewDelegate中实现委托方法

And Implement the delegate method in UIScrollViewDelegate

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
    return [scrollView viewWithTag:1];
}

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