SwiftUI Image Share Sheet

ImageShareSheet.swift

import Foundation
import SwiftUI

///  A view for sharing an image. The user can add the image to their cameraroll, share it via iMessage, etc.
struct ImageShareSheet: UIViewControllerRepresentable {
    /// The images to share
    let images: [UIImage]
    
    func makeUIViewController(context: Context) -> some UIViewController {
        let activityViewController = UIActivityViewController(activityItems: images, applicationActivities: nil)
        
        // exclude some activity types from the list (optional)
        // activityViewController.excludedActivityTypes = [ UIActivity.ActivityType.airDrop, UIActivity.ActivityType.postToFacebook ]
        
        return activityViewController
    }
    
    func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {
        
    }
}

extension View {
    func imageShareSheet(
        isPresented: Binding<Bool>,
        images: [UIImage]
    ) -> some View {
        return sheet(isPresented: isPresented, content: { ImageShareSheet(images: images) } )
    }
    
    func imageShareSheet(
        isPresented: Binding<Bool>,
        image: UIImage
    ) -> some View {
        return sheet(isPresented: isPresented, content: { ImageShareSheet(images: [image]) } )
    }
}

// Usage 
struct ExampleView: View {
  @State var showImageSheet = false
  var body: some View {
    Button("Share image") {
      showImageSheet = true
    }
    .imageShareSheet(isPresented: $showImageSheet, image: UIImage(named: "example_image"))
  }
}