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POUIScrollView in Navigation Controller
 

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    <p>I'm trying to get UIScrollView working in my training app. Scroll itself works fine, but if I'm using a Navigation Controller, the content area of the SVC is shifted downwards for amount of navigation bar height.</p> <p><img src="https://i.stack.imgur.com/UXuLW.png" alt="without nav controller"> <img src="https://i.stack.imgur.com/LyeNa.png" alt="with nav controller"></p> <p>Cyan area is UIScrollView background. contentSize is set properly, only swiping pages side to side is allowed. This is how I add an image to scroll view</p> <pre><code>CGSize scrollViewSize = self.scrollView.frame.size; UIImage * image = [UIImage imageWithContentsOfFile:[cachesDirectory stringByAppendingFormat:@"/%@", fileName]]; CGFloat imageOriginalWidth = image.size.width; CGFloat imageOriginalHeight = image.size.height; CGFloat imageOffsetX = 10; CGFloat imageDisplayedWidth = scrollViewSize.width - (2 * imageOffsetX); CGFloat imageDisplayedHeight = imageOriginalHeight / imageOriginalWidth * imageDisplayedWidth; CGFloat imageOffsetY = (scrollViewSize.height - imageDisplayedHeight) / 2; CGRect viewFrame = CGRectMake(scrollViewSize.width * (filmIndex) + imageOffsetX, imageOffsetY, imageDisplayedWidth, imageDisplayedHeight); contentAreaHeight = imageDisplayedHeight; UIImageView * view = [[UIImageView alloc] initWithFrame:viewFrame]; view.backgroundColor = [UIColor greenColor]; view.image = image; view.contentMode = UIViewContentModeScaleAspectFit; view.tag = filmIndex; [self.scrollView addSubview:view]; </code></pre> <p>And this is how I set content size and offset</p> <pre><code>self.scrollView.contentSize = CGSizeMake(scrollViewSize.width * ([self.filmsData count]), contentAreaHeight); self.scrollView.contentOffset = CGPointMake(scrollViewSize.width * [self.filmsData count] / 2, 0); </code></pre> <p>How what's wrong with my code and how can I get images centered vertically when using navigation controller?</p>
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    1. COWhere is this code being called from? My guess is you are doing this in `-viewDidLoad`.
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      1. USJeffery Thomas
    2. CO@JefferyThomas you're right, it's being called from `-viewDidLoad`. Don't you mean that in `-viewDidLoad` `frame`s are not set yet and I should move it to `-viewWillAppear`?
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