UIScrollView wrapped for SwiftUI

UIScrollViewWrapper.swift

//
//  UIScrollViewWrapper.swift
//  lingq-5
//
//  Created by Timothy Costa on 2019/07/05.
//  Copyright © 2019 timothycosta.com. All rights reserved.
//

import SwiftUI

struct UIScrollViewWrapper<Content: View>: UIViewControllerRepresentable {

	var content: () -> Content

	init(@ViewBuilder content: @escaping () -> Content) {
		self.content = content
	}

	func makeUIViewController(context: Context) -> UIScrollViewViewController {
		let vc = UIScrollViewViewController()
		vc.hostingController.rootView = AnyView(self.content())
		return vc
	}

	func updateUIViewController(_ viewController: UIScrollViewViewController, context: Context) {
		viewController.hostingController.rootView = AnyView(self.content())
	}
}

class UIScrollViewViewController: UIViewController {

	lazy var scrollView: UIScrollView = {
		let v = UIScrollView()
		v.isPagingEnabled = true
		return v
	}()

	var hostingController: UIHostingController<AnyView> = UIHostingController(rootView: AnyView(EmptyView()))

	override func viewDidLoad() {
		super.viewDidLoad()
		self.view.addSubview(self.scrollView)
		self.pinEdges(of: self.scrollView, to: self.view)

		self.hostingController.willMove(toParent: self)
		self.scrollView.addSubview(self.hostingController.view)
		self.pinEdges(of: self.hostingController.view, to: self.scrollView)
		self.hostingController.didMove(toParent: self)

	}

	func pinEdges(of viewA: UIView, to viewB: UIView) {
		viewA.translatesAutoresizingMaskIntoConstraints = false
		viewB.addConstraints([
			viewA.leadingAnchor.constraint(equalTo: viewB.leadingAnchor),
			viewA.trailingAnchor.constraint(equalTo: viewB.trailingAnchor),
			viewA.topAnchor.constraint(equalTo: viewB.topAnchor),
			viewA.bottomAnchor.constraint(equalTo: viewB.bottomAnchor),
		])
	}

}

Works great, just that if I put VStack in, VStack width is bound to its content and not greedy.

I'm having the same issue with the content height. Anybody get it working?

@wilg Did you ever get this working?

no, sorry

@mysterytoy @wilg I solved the issue on a similar component of mine by adding hostingController.sizingOptions = .intrinsicContentSize in the UIScrollViewViewController initializer.
Edit: Here is an excellent article about it: https://medium.com/@batrakov.vitaly/adapting-uihostingcontroller-to-changes-in-swiftui-view-size-da11a0994a1e

one more thing layoutIfNeeded must be called before returing the view because otherwise the view may freeze when updating the content in the scrollView