Blog post: SwiftUI with UICollectionView - 7. Refactored to pass data to the SwiftUI Card

swiftui-uicollectionviewcell-3.swift

import SwiftUI
import UIKit

class MyCollectionViewCell: UICollectionViewCell {
    
    static var reuseIdentifier = "MyCollectionViewCell"
    
    typealias Content = Card.Content
    
    private(set) var host: UIHostingController<Card>?
    
    // MARK: UIHostingController Setup/Cleanup
    
    func embed(in parent: UIViewController, withContent content: Content) {
        if let host = self.host {
            host.rootView = Card(content: content)
            host.view.layoutIfNeeded()
        } else {
            let host = UIHostingController(rootView: Card(content: content))
            parent.addChild(host)
            host.didMove(toParent: parent)
            
            // alternative to using constraints
            host.view.frame = self.contentView.bounds
            self.contentView.addSubview(host.view)
            
            self.host = host
        }
    }
    
    deinit {
        host?.willMove(toParent: nil)
        host?.view.removeFromSuperview()
        host?.removeFromParent()
        host = nil
    }
}