Android Question Open failed: EACCES (Permission denied)

[T201016]

Hi,
I'm working on resources located in the folder: android/data.
System: Android 12.
In the Manifest editor I added:

AddPermission(android.permission.READ_EXTERNAL_STORAGE)
AddPermission(android.permission.WRITE_EXTERNAL_STORAGE)

AddPermission(android.permission.MANAGE_EXTERNAL_STORAGE)
SetApplicationAttribute(android:requestLegacyExternalStorage, true)

and I can't read the contents of the selected file. Instead of this
I have an error message on the line:
What am I doing wrong?

        'The ExternalFile returned from ListFiles cannot be used directly.
        'We need to first call FindFile.
        f = Storage.FindFile(GetCurrentFolder, f.Name)
        If f.IsFolder Then
            EnterFolder(f)
        Else If IsFileINI(f.Name) Then
            Try
                Private outputstream As OutputStream = File.OpenOutput(File.DirInternal,"temp.ini",True)
                Private inputstreams As InputStream  = Storage.OpenInputStream(f)     '---> ERROR: (FileNotFoundException) java.io.FileNotFoundException:
                                                                                    'open failed: EACCES (Permission denied).

                ' Save file
                Wait for (File.Copy2Async(inputstreams, outputstream)) Complete (isCopy As Boolean)
                If inputstreams.IsInitialized Then inputstreams.Close
                If outputstream.IsInitialized Then outputstream.Close
               
                ...
        End if
       
'Open an input stream that reads from the file.
Public Sub OpenInputStream(EF As ExternalFile) As InputStream
    Return ctxt.RunMethodJO("getContentResolver", Null).RunMethod("openInputStream", Array(EF.Native.RunMethod("getUri", Null)))
End Sub

 

[agraham]

Without seeing more of your code you seem to be jumbling up different ways of file access. If you are requesting and receiving MANAGE_EXTERNAL_STORAGE you don't need requestLegacyExternalStorage. With MANAGE_EXTERNAL_STORAGE you use the normal file access mechanisms to access the file store except Android/data and Android/obb

Manage External Storage - access internal external storage >= SDK 30

Google seems intent on dumbing down Android to the point of uselessnes to me. I think of my devices as little computers and I want a proper file system on them, not the limited tortuous things that Google offers and that I don't understand, ContentChooser, FileProvider, ... o_O I'm getting old...

www.b4x.com

If you read the first post there you will find this

EDIT: If for some reason you need to access folders under Android/data or Android/obb there is a loophole in post #35 here. Note that this is probably not intentional on Googles part and may be may closed in the futire. If your File Explorer on your device can access these folders this is how it is doing it.

Post #35 in this thread has an example of accessing Android/data using ExternalStorage.

£50 for the first working solution. SDK30 Android/data read/write

No! As I said above. Sorry your being very cryptic! LOL (I can see this is also a security issue, so maybe that is part of the cryptic messages) I will play more with your original manage-external-storage-access-internal-external-storage-sdk-30 and see how i get on... I hear what your saying...

www.b4x.com

 

[T201016]

Without seeing more of your code you seem to be jumbling up different ways of file access. If you are requesting and receiving MANAGE_EXTERNAL_STORAGE you don't need requestLegacyExternalStorage. With MANAGE_EXTERNAL_STORAGE you use the normal file access mechanisms to access the file store except Android/data and Android/obb

Manage External Storage - access internal external storage >= SDK 30

Google seems intent on dumbing down Android to the point of uselessnes to me. I think of my devices as little computers and I want a proper file system on them, not the limited tortuous things that Google offers and that I don't understand, ContentChooser, FileProvider, ... o_O I'm getting old...

www.b4x.com

If you read the first post there you will find this

Post #35 in this thread has an example of accessing Android/data using ExternalStorage.

£50 for the first working solution. SDK30 Android/data read/write

No! As I said above. Sorry your being very cryptic! LOL (I can see this is also a security issue, so maybe that is part of the cryptic messages) I will play more with your original manage-external-storage-access-internal-external-storage-sdk-30 and see how i get on... I hear what your saying...

www.b4x.com

I've read these posts before, I understand that now and in the future it is no longer possible to save files in the Android/data directories from the Android level?

 

[agraham]

it is no longer possible to save files in the Android/data directories from the Android level?

You can for now using the example I posted in post #35 of the thread I linked to above. There is no guarantee that this, probably unintended loophole, won't be closed in the future.