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DispatchGroup vs DispatchSemaphore in iOS (Swift)

Collection view inside table view with NO vertical scrolling

UICollectionView inside a UITableViewCell — dynamic height?

Given the following structure:
  • TableView
  • TableViewCell
  • CollectionView
  • CollectionViewCell
  • CollectionViewCell
  • CollectionViewCell
  • [...variable number of cells or different cell sizes]

The solution is to tell auto layout to compute first the collectionViewCell sizes, then the collection view contentSize, and use it as the size of your cell. This is the UIView method that "does the magic":
-(void)systemLayoutSizeFittingSize:(CGSize)targetSize      withHorizontalFittingPriority:(UILayoutPriority)horizontalFittingPriority            verticalFittingPriority:(UILayoutPriority)verticalFittingPriority

Full code is available here to download.

Thanks to this awesome answer.


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