Why isn't the CollectionVIew displayed inside ScrollView? The scroll works, did everything correctly, but the CollectionView and everything inside it is not displayed at startup. In the collection there will be pictures with a label, when clicks on which there will be a transition to another activation, and depending on which block the user clicked on, the parameters will be transmitted. The photo shows the hierarchy. What am I doing wrong? 
- Why do you put UICollectionView on UIScrollView? - Vitaly
- @Vitaly because such tiles will be> 15 and it will be necessary to scroll down to see others. - hohfiofi
- UICollectionView has its own scroll. - Vitaly
- @Vitaly, is there a scrollView not needed at all? - hohfiofi
- It turns out not needed) - Vitaly
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