Convert PDF To Base64 in SwiftUI - ios

Question

I am fetching PDF data. It provides me URL, and when I am converting it to base64. This is what I am getting:
The file “file.pdf” couldn’t be opened because you don’t have permission to view it.
I am not getting why is it giving this. This is how I am getting the pdf file url:
#State var openPDF = false
#State var fileName = ""
#State var pdfFile : URL?
var body: some View {
Button {
self.openPDF.toggle()
}, label {
Text("Add Attachment")
}.fileImporter(isPresented: $vm.openPDF, allowedContentTypes: [.pdf]) { result in
do {
let fileURL = try result.get()
print(fileURL)
self.fileName = fileURL.lastPathComponent
self.pdfFile = fileURL
} catch {
print("error getting documents")
print(error.localizedDescription)
}
}
}
An this is how I am converting it to base64:
do {
let filePath = pdfFile
let fileData = try Data.init(contentsOf: filePath!)
let fileStream:String = fileData.base64EncodedString()
print(fileStream)
} catch {
print("error")
print(error.localizedDescription)
}
In this do-catch, it is giving the error that "this file could not be opened because you don't have permission.

Answer 1

Do this to convert PDF to Base64 String:
fileapp.startAccessingSecurityScopedResource() {
defer {
DispatchQueue.main.async {
fileapp.stopAccessingSecurityScopedResource()
}
}
do {
let fileData = try Data.init(contentsOf: fileapp)
let fileStream:String = fileData.base64EncodedString()
print(fileStream)
base64PDF = fileStream
} catch {
print("error")
print(error.localizedDescription)
}
}