Ios: how to load images from a URL into a page control by scrolling

Question

I am new to iOS. Now I want to load image images from the URL control into the page using the scroll view. When I start the program, the first image is displayed, but when I try to go to the next image or I go to another page, the program does not respond. My guess is probably related to the size of the image.

Below is the code to download the image. I put this code in - (void) viewDidLOad ...

CGRect screenShot = screenView.frame;
screenShot.origin.y = description.frame.origin.y + description.frame.size.height + 30;
screenView.frame = screenShot;

pageControlBeingUsed = NO;

for (int i = 0; i < [myArrayImagesURL count]; i++) {
    CGRect frame;
    frame.origin.x = self.scrollView.frame.size.width * i;
    frame.origin.y = 0;
    frame.size = self.scrollView.frame.size;
      UIImageView *iv = [[[UIImageView alloc] initWithFrame:CGRectMake(scrollView.bounds.size.width * i, 0, scrollView.bounds.size.width, scrollView.bounds.size.height)] autorelease];
    iv.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:
                                       [NSURL URLWithString:[myArrayImagesURL objectAtIndex:i]]]];

    [self.scrollView addSubview:iv];
    [iv release];
}

self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * [myArrayImagesURL count], self.scrollView.frame.size.height);

self.pageControl.currentPage = 0;
self.pageControl.numberOfPages = [myArrayImagesURL count];

Answer 1

, imageView autorelease . . autorelease imageView. .

UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectMake(scrollView.bounds.size.width * i, 0, scrollView.bounds.size.width, scrollView.bounds.size.height)];