Get PDF-Scanner in fullscreen in a sheet in SwiftUI - swiftui

Question

I am working on a PDF-Scanner and want to realize it with SwiftUI. I know that I have to work with UIViewRepresentable to get this done.
So the user should open the Camera (to scan the document) in a Sheetview, but the camera doesn't open. If I put it in a Navigationview, it works fine.
My questions are:
Is it possible to open the camera in Sheetviews (fullscreen). Or is it possible put the CameraView in a limited frame in the SheetView to get this done.
Thanks a lot
import SwiftUI
import VisionKit
import PDFKit
import UIKit
#main
struct testetApp: App {
var body: some Scene {
WindowGroup {
ContentView(scannerModel: ScannerModel())
}
}
}
struct ContentView: View {
#State var showNextView = false
#StateObject var vm = CoreDataRelationshipViewModel()
#ObservedObject var scannerModel: ScannerModel
var body: some View {
NavigationView {
VStack {
Button {
showNextView.toggle()
} label: {
Text("via Sheet")
}.sheet(isPresented: $showNextView) {
ContentView2(scannerModel: scannerModel, showNextView: $showNextView).environment(\.managedObjectContext, vm.mangager.container.viewContext)
}.padding()
NavigationLink("via Navigationlink", destination: ContentView3(scannerModel: scannerModel))
}
.padding()
}
}
}
struct ContentView2: View {
#StateObject var vm = CoreDataRelationshipViewModel()
#ObservedObject var scannerModel: ScannerModel
#State var files : [String] = []
#State var PDFview = false
#State var addDoc = true
#Binding var showNextView: Bool
var body: some View {
ZStack{
NavigationView{
VStack{
VStack {
NavigationLink(destination: ScanView(files: $files, scannerModel: scannerModel, vm: vm)){
VStack{
Image(systemName: "plus").font(.largeTitle).padding(.bottom)
Text("Scan Document").font(.caption)
}
}
}
}
}
}
}
}
struct ContentView3: View {
#StateObject var vm = CoreDataRelationshipViewModel()
#ObservedObject var scannerModel: ScannerModel
#State var files : [String] = []
#State var PDFview = false
#State var addDoc = true
var body: some View {
ZStack{
VStack{
VStack {
NavigationLink(destination: ScanView(files: $files, scannerModel: scannerModel, vm: vm)){
VStack{
Image(systemName: "plus").font(.largeTitle).padding(.bottom)
Text("Scan Document").font(.caption)
}
}
}
}
}
}
}
struct ScanView: View{
#Environment(\.presentationMode) var mode
#State var pdfName = ""
#State var addDoc = true
#Binding var files : [String]
#ObservedObject var scannerModel: ScannerModel
#ObservedObject var vm: CoreDataRelationshipViewModel
var body: some View{
ZStack{
VStack{
if let error = scannerModel.errorMessage {
Text(error)
} else {
ForEach(scannerModel.imageArray, id: \.self) { image in
Image(uiImage: image)
.resizable()
.aspectRatio(contentMode: .fit).contextMenu {
Button {
let items = [image]
let ac = UIActivityViewController(activityItems: items, applicationActivities: nil)
UIApplication.shared.windows.filter({$0.isKeyWindow}).first?.rootViewController?.present(ac, animated: true)
} label: {
Label("share Document", systemImage: "square.and.arrow.up")
}
Divider()
Button {
scannerModel.removeImage(image: image)
} label: {
Label("delete document", systemImage: "delete.left")
}
}
}
}
}.navigationBarItems( trailing: Button(action:{
vm.createSavedPDF(a: scannerModel.imageArray)
guard pdfName.count > 0 else{
return
}
self.mode.wrappedValue.dismiss()
saveDocument(a: scannerModel.imageArray, pdfName: pdfName)
scannerModel.imageArray.removeAll()
files = getDocumentsDirectory()
}){
Text("Save")
})
if(addDoc){
VStack{
VStack{
Button(action: {
UIApplication.shared.windows.filter({$0.isKeyWindow}).first?.rootViewController?.present(scannerModel.getDocumentCameraViewController(), animated: true, completion: nil)
addDoc = false
}){
VStack {
Image(systemName: "camera").font(.title)
Text("Scan Doc").font(.title)
}
}
}.padding()
}
}
}
}
}
struct PDFKitRepresentedView: UIViewRepresentable {
let url: URL
init(_ url: URL) {
self.url = url
}
func makeUIView(context: UIViewRepresentableContext<PDFKitRepresentedView>) -> PDFKitRepresentedView.UIViewType {
let pdfView = PDFView()
pdfView.document = PDFDocument(url: self.url)
pdfView.pageBreakMargins = UIEdgeInsets(top: 50, left: 30, bottom: 50, right:30)
pdfView.autoScales = true
return pdfView
}
func updateUIView(_ uiView: UIView, context: UIViewRepresentableContext<PDFKitRepresentedView>) {
}
}
struct ActivityViewController: UIViewControllerRepresentable {
var activityItems: [Any]
var applicationActivities: [UIActivity]? = nil
func makeUIViewController(context: UIViewControllerRepresentableContext<ActivityViewController>) -> UIActivityViewController {
let controller = UIActivityViewController(activityItems: activityItems, applicationActivities: applicationActivities)
return controller
}
func updateUIViewController(_ uiViewController: UIActivityViewController, context: UIViewControllerRepresentableContext<ActivityViewController>) {}
}