I want to copy file that downloaded from server and stored in document directory to OTG usb device connected to my iPhone, I can get path of usb device but when I want to copy, move or write file to usb I get errors The file “STORAGE” couldn’t be saved in the folder “com.apple.filesystems.userfsd” and Permission denied (“Storage” is name of the usb device).
I used UIDocumentPickerViewController to get path of the usb.
I’ve tried to write data:
func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
guard let selectedURL = urls.first else { return }
do {
let shouldStopAccessing = selectedURL.startAccessingSecurityScopedResource()
defer {
if shouldStopAccessing {
selectedURL.stopAccessingSecurityScopedResource()
}
}
let data = try Data(contentsOf: fileURL!).base64EncodedData()
try data.write(to: selectedURL, options: .noFileProtection)
print("Data written successfully!")
do {
try FileManager.default.removeItem(atPath: fileURL!.path)
} catch {
print("Could not delete file, probably read-only filesystem")
}
} catch {
print("Error writing data: \(error.localizedDescription)")
}
}
even copy file with FileManager:
func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
guard let selectedURL = urls.first else { return }
do {
let shouldStopAccessing = selectedURL.startAccessingSecurityScopedResource()
defer {
if shouldStopAccessing {
selectedURL.stopAccessingSecurityScopedResource()
}
}
try FileManager.default.copyItem(at: fileURL!, to: selectedURL)
print("Data written successfully!")
do {
try FileManager.default.removeItem(atPath: fileURL!.path)
} catch {
print("Could not delete file, probably read-only filesystem")
}
} catch {
print("Error writing data: \(error.localizedDescription)")
}
}
But none of these methods worked.
Is there any way to copy the file to the USB from iOS application?
