How to open the ImagePicker in SwiftUI?

Question

I need to open the ImagePicker in my app using SwiftUI, how can I do that?

I thought about using the UIImagePickerController, but I don\'t know how to do that in Swi

Answer 1

Based on @user:2890168 I made a version that:

• retrieves UIImage instead of Image
• use .sheet to present the ImagePicker.
• shows ActionSheet to help users to remove or change the image.

struct LibraryImage: View {

    @State var showAction: Bool = false
    @State var showImagePicker: Bool = false

    @State var uiImage: UIImage? = nil

    var sheet: ActionSheet {
        ActionSheet(
            title: Text("Action"),
            message: Text("Quotemark"),
            buttons: [
                .default(Text("Change"), action: {
                    self.showAction = false
                    self.showImagePicker = true
                }),
                .cancel(Text("Close"), action: {
                    self.showAction = false
                }),
                .destructive(Text("Remove"), action: {
                    self.showAction = false
                    self.uiImage = nil
                })
            ])

    }


    var body: some View {
        VStack {

            if (uiImage == nil) {
                Image(systemName: "camera.on.rectangle")
                    .accentColor(Color.App.purple)
                    .background(
                        Color.App.gray
                            .frame(width: 100, height: 100)
                            .cornerRadius(6))
                    .onTapGesture {
                        self.showImagePicker = true
                    }
            } else {
                Image(uiImage: uiImage!)
                    .resizable()
                    .frame(width: 100, height: 100)
                    .cornerRadius(6)
                    .onTapGesture {
                        self.showAction = true
                    }
            }

        }

        .sheet(isPresented: $showImagePicker, onDismiss: {
            self.showImagePicker = false
        }, content: {
            ImagePicker(isShown: self.$showImagePicker, uiImage: self.$uiImage)
        })

        .actionSheet(isPresented: $showAction) {
            sheet
        }
    }
}

The default body of LibraryImage is an Image that shows a camera icon that is tappable by the users.

On tap event, the image picker is shown with a sheet modifier. After the image selection, the LibraryImage body is recomputed and now shows the Image defined in else statement (because uiImage property now contains the image picked by the user).

Now, on tap event the ActionSheet is shown.

The edited image picker:

struct ImagePicker: UIViewControllerRepresentable {

    @Binding var isShown: Bool
    @Binding var uiImage: UIImage?

    class Coordinator: NSObject, UINavigationControllerDelegate, UIImagePickerControllerDelegate {

        @Binding var isShown: Bool
        @Binding var uiImage: UIImage?

        init(isShown: Binding, uiImage: Binding) {
            _isShown = isShown
            _uiImage = uiImage
        }

        func imagePickerController(_ picker: UIImagePickerController,
                                   didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
            let imagePicked = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
            uiImage = imagePicked
            isShown = false
        }

        func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
            isShown = false
        }

    }

    func makeCoordinator() -> Coordinator {
        return Coordinator(isShown: $isShown, uiImage: $uiImage)
    }

    func makeUIViewController(context: UIViewControllerRepresentableContext) -> UIImagePickerController {
        let picker = UIImagePickerController()
        picker.delegate = context.coordinator
        return picker
    }

    func updateUIViewController(_ uiViewController: UIImagePickerController,
                                context: UIViewControllerRepresentableContext) {

    }

}

default behaviour: