iOS Swift: How to recreate a Photos App UICollectionView Layout

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I am wondering for quiet a while now how to create the iOS Photos App layout. How can I make it so it looks like zooming in to a collection while at the same time the navigation bar shows a back button?

Is it a new view controller which gets pushed onto a UINavigationController? And if so, how exactly do they manage to match the tiles while expanding.

Is there maybe even a 3rd party library which lets me easily recreate such a layout?

Hope you can help me to understand the concept of how this works.

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