Can't save file on iOS

Question

Created Nov ’20

Replies 1

Boosts 1

Views 4.6k

Participants 2

Hello all!
I've killed a few days trying to save a file and list it in a home directory.

First I retrieve a home directory URL.
I tried several options:

Code Block docDir = try FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
docDir = URL(fileURLWithPath: NSHomeDirectory())

In any way when running on simulator or my iPhone it results in just "file:///"
Well, maybe that's ok for sandboxed iOS app...

After that I prepare a file URL. I tried two ways:

Code Block let file = docDir.appendingPathComponent("myfile.tmp")
let file = URL(fileURLWithPath: "myfile.tmp")
print(file.absoluteURL)

Here I get "file:///myfile.tmp"

Finally I try to create file

Code Block         do {
            try  Data(count: 0).write(to: file2)
        }
        catch {
            print("Failed to create file: '\(file)' because of: \(error)")
        }

And here is what I get

On simulator:

Failed to create file: './myfile.tmp -- file:///' because of: Error Domain=NSCocoaErrorDomain Code=642 "You can’t save the file “myfile.tmp” because the volume “AirHD — данные” is read only." UserInfo={NSFilePath=/myfile.tmp, NSUnderlyingError=0x600000dea1f0 {Error Domain=NSPOSIXErrorDomain Code=30 "Read-only file system"}}

On iPhone:

Failed to create file: './myfile.tmp -- file:///' because of: Error Domain=NSCocoaErrorDomain Code=513 "You don’t have permission to save the file “myfile.tmp” in the folder “System”." UserInfo={NSFilePath=/myfile.tmp, NSUnderlyingError=0x281725a40 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}

But why in the folder “System” ??
It should have been my Documents folder!

Boost

Answer 1

CharlesVercauteren OP

Dec ’20

This works for me:

let file = "file5.txt"
let text = "some text"
let fm = FileManager.default
let dir = fm.urls(for: .documentDirectory, in: .userDomainMask)
if dir.count != 0 {
let log = dir[0].appendingPathComponent(file)
print(dir[0])
do {
try text.write(to: log, atomically: true, encoding: .ascii)
}
catch {
print("error writing file")
}
}
else {
print("document map in local domain not found")
exit(0)
}

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