To render something more than solid color rectangles, we need a custom cell view that will be used to display the data. With that in mind, we have to create a custom cell class which inherits from UICollectionViewCell. Because we will construct those cells with code (not using a storyboard layout), then we have to implement a specific constructor. If we have to use a storyboard, then we should implement the init(coder:NSCoder) method. It's called once the storyboard is rendered on the screen.
Here is how we can start:
/** * Custom UICollectionViewCell which has a label on top. */class AnimalCollectionViewCell :UICollectionViewCell { private var _label: UILabel override init(frame: CGRect) { let fr = CGRect(x: 0, y: ...
