SwiftUI exporting or sharing files

Question

I\'m wondering if there is a good way export or share a file through SwiftUI. There doesn\'t seem to be a way to wrap a UIActivityViewController and present it directly. I\'

Answer 1

We can call the UIActivityViewController directly from the View (SwiftUI) without using UIViewControllerRepresentable.

import SwiftUI
enum Coordinator {
  static func topViewController(_ viewController: UIViewController? = nil) -> UIViewController? {
    let vc = viewController ?? UIApplication.shared.windows.first(where: { $0.isKeyWindow })?.rootViewController
    if let navigationController = vc as? UINavigationController {
      return topViewController(navigationController.topViewController)
    } else if let tabBarController = vc as? UITabBarController {
      return tabBarController.presentedViewController != nil ? topViewController(tabBarController.presentedViewController) : topViewController(tabBarController.selectedViewController)
      
    } else if let presentedViewController = vc?.presentedViewController {
      return topViewController(presentedViewController)
    }
    return vc
  }
}

struct ActivityView: View {
    var body: some View {
      Button(action: {
        self.shareApp()
      }) {
        Text("Share")
      }
    }
}

extension ActivityView {
  func shareApp() {
    let textToShare = "something..."
    let activityViewController = UIActivityViewController(activityItems: [textToShare], applicationActivities: nil)
    
    let viewController = Coordinator.topViewController()
    activityViewController.popoverPresentationController?.sourceView = viewController?.view
    viewController?.present(activityViewController, animated: true, completion: nil)
  }
}

struct ActivityView_Previews: PreviewProvider {
    static var previews: some View {
        ActivityView()
    }
}

And this is a preview:

Hoping to help someone!