Folder added on Android is not visible via USB

Question

I\'m trying to save pictures in a subfolder on Android. Here\'s a bit of my code:

File path = Environment.getExternalStoragePublicDirectory(Environment.DIREC         


        

Answer 1

The only thing that worked for me was this:

Intent mediaScannerIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
Uri fileContentUri = Uri.fromFile(path);
mediaScannerIntent.setData(fileContentUri);
this.sendBroadcast(mediaScannerIntent);

Credit to https://stackoverflow.com/a/12821924/1964666

Answer 2

None of the above helped me, but this worked: The trick being to NOT scan the new folder, but rather create a file in the new folder and then scan the file. Now Windows Explorer sees the new folder as a true folder.

    private static void fixUsbVisibleFolder(Context context, File folder) {
    if (!folder.exists()) {
        folder.mkdir();
        try {
            File file = new File(folder, "service.tmp");//workaround for folder to be visible via USB
            file.createNewFile();
            MediaScannerConnection.scanFile(context,
                    new String[]{file.toString()},
                    null, (path, uri) -> {
                        file.delete();
                        MediaScannerConnection.scanFile(context,
                                new String[]{file.toString()} ,
                                null, null);
                    });
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Thanks to https://issuetracker.google.com/issues/37071807#comment90

You also should scan every created file in the directory analogically:

   private static void fixUsbVisibleFile(Context context, File file) {
    MediaScannerConnection.scanFile(context,
            new String[]{file.toString()},
            null, null);
}