Zooming in UIScrollView - Unable to zoom beyond single image and scroll - ios

Question

I have an array of images loading from the NSURL to scroll in and pinch zoom. I was able to implement the scroll part but when I try to zoom any image beyond the first one, the scroll is stuck and so is the scale on the image. Here is my code:
scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 100, SCREEN_WIDTH, self.view.bounds.size.height)];
scrollView.showsHorizontalScrollIndicator = FALSE;
scrollView.maximumZoomScale = 4.0;
scrollView.minimumZoomScale = 1.0;
scrollView.delegate = self;
[self.view addSubview:scrollView];
for (int i=0; i<[listOfImagesZoom count]; i++) {
imageView = [[UIImageView alloc] initWithFrame:CGRectMake(leftMargin, self.scrollView.bounds.origin.y-100, SCREEN_WIDTH, self.view.bounds.size.height-100)];
// [imageView setImage:[UIImage imageNamed:#"img_def.png"]];
NSString *urlImage1 = (NSString*)[listOfImagesZoom objectAtIndex:i];
NSString *productImageURL1 = [urlImage1 stringByReplacingOccurrencesOfString:#"~" withString:#""];
NSString *productImageURL2 = [productImageURL1 stringByReplacingOccurrencesOfString:#" " withString:#"%20"];
NSString* urlImage = [NSString stringWithFormat:#"http://sagana-ideas.azurewebsites.net%#", productImageURL2];
NSURL *imgURL=[NSURL URLWithString:urlImage];
[imageView setImageWithURL:imgURL placeholderImage:[UIImage imageNamed:#"ex_product.png"]];
imageView.contentMode = UIViewContentModeScaleAspectFit;
[scrollView addSubview:imageView];
[imageView setUserInteractionEnabled:NO];
imageView.tag = i;
leftMargin += SCREEN_WIDTH;
}
[scrollView setContentSize:CGSizeMake(leftMargin, 0)];
[scrollView setPagingEnabled:YES];
scrollView.delegate = self;
I have even implemented the
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
return imageView;
}
It works if there is only single image to load, but is stuck when there is more than 1 image.

Answer 1

You need a ScrollView to display list of your images. Each image was displayed a scrollView(a subclass scrollview) to perform zoom in/out.
Try to look at this: MWPhotoBrowser

Answer 2

You can create a UIView inside scrollview in which you may add your all images and then return that view from, - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView method.