Im' new in swift and I want to understand why I got this error from my struct. I want to offer to my customer the possibility to show the file after the download.
Here is my class witch used for :
import SwiftUI
import QuickLook
import FirebaseStorage
struct AdminUsersToPaid: View {
@EnvironmentObject var viewModel: AuthViewModel
@StateObject var adminUserToPaid = AdminUserToPaidModel()
@State private var soldes: [Solde] = []
@State private var isShowingToast = false
@State private var toastMessage = ""
@State private var fileToPreview: URL?
var body: some View {
content.onAppear{
Task{
await adminUserToPaid.fetchSoldeData()
soldes = adminUserToPaid.soldeList
}
}.toast(isShowing: $isShowingToast, text: Text(toastMessage))
.background(
QLPreviewControllerRepresentation(fileURL: $fileToPreview)
)
}
var content: some View{
VStack{
HStack{
Text("Utilisateur à payer")
.font(.system(size: 24).bold())
Spacer()
Image(systemName: "eurosign")
.font(.system(size: 32))
.foregroundColor(.black)
}.padding()
Spacer()
List(soldes){ solde in
HStack{
VStack{
Text("Nom Complet").font(.system(size: 14)).multilineTextAlignment(.center)
Text("\(solde.proprietaire)").padding(.top,5).font(.system(size: 12)).foregroundColor(.gray).multilineTextAlignment(.center)
}
Spacer()
VStack{
Text("Date de la demande").font(.system(size: 14)).multilineTextAlignment(.center)
Text("\(formatDate(solde.date))").padding(.top,5).font(.system(size: 12)).foregroundColor(.gray).multilineTextAlignment(.center)
}
Spacer()
VStack{
Text("Etat de la demande").font(.system(size: 14)).multilineTextAlignment(.center)
Text("\(solde.etat)").padding(.top,5).font(.system(size: 12)).foregroundColor(.gray).multilineTextAlignment(.center)
}
Spacer()
VStack{
Text("Total du solde").font(.system(size: 14)).multilineTextAlignment(.center)
Text("\(solde.total)").padding(.top,5).font(.system(size: 12)).foregroundColor(.gray).multilineTextAlignment(.center)
}
Spacer()
Button {
downloadInvoice(forSolde: solde)
} label: {
Text("Voir la facture").multilineTextAlignment(.center)
}
}
}
NavigationLink {
AdminDashboard().navigationBarBackButtonHidden(true)
} label: {
HStack(spacing: 3){
Text("Retour à la page")
Text("Principale").fontWeight(.bold)
}.font(.system(size: 14))
}
}
}
}
struct QLPreviewControllerRepresentation: UIViewControllerRepresentable {
@Binding var fileURL: URL?
func makeUIViewController(context: Context) -> some QLPreviewController {
let controller = QLPreviewController()
controller.dataSource = context.coordinator
return controller
}
func updateUIViewController(_ uiViewController: QLPreviewController, context: Context) {
uiViewController.reloadData()
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
class Coordinator: NSObject, QLPreviewControllerDataSource {
let parent: QLPreviewControllerRepresentation
init(_ parent: QLPreviewControllerRepresentation) {
self.parent = parent
}
func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
return parent.fileURL != nil ? 1 : 0
}
func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
return parent.fileURL! as QLPreviewItem
}
}
}
extension AdminUsersToPaid {
func downloadInvoice(forSolde solde: Solde) {
let filename = solde.facture
let storageRef = Storage.storage().reference().child("invoices/\(solde.proprietaire)/\(solde.id)/\(filename)")
let localURL = FileManager.default.temporaryDirectory.appendingPathComponent(filename)
storageRef.write(toFile: localURL) { url, error in
if let error = error {
toastMessage = "Erreur lors du téléchargement: \(error.localizedDescription)"
isShowingToast.toggle()
} else if let url = url {
fileToPreview = url
}
}
}
}
private func formatDate(_ date: Date) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"
return dateFormatter.string(from: date)
}
struct AdminUsersToPaid_Previews: PreviewProvider {
static var previews: some View {
AdminUsersToPaid()
}
}Thanks to all for helping. The problem occur on this line to be more explicit but don't know why...
struct QLPreviewControllerRepresentation: UIViewControllerRepresentable {if somebody can explain me what is wrong in this part of the structure I will be thankful.
