Crashes when sharing from Delta Chat to some apps

[Hocuri]

@Simon-Laux's file manager (Material Files, from F-Droid) throws this error:

System.err: java8.nio.file.FileSystemException: content://com.b44t.messenger.attachments/f6ad6d62.log/nixos-infect.log: ContentResolver.query() with content://com.b44t.messenger.attachments/f6ad6d62.log/nixos-infect.log returned null

The fix is probably to return something sensible from query() in AttachmentsContentProvider.java:

    @Override
    public Cursor query(Uri arg0, String[] arg1, String arg2, String[] arg3,
                        String arg4) {
        return null;
    }

Signal has it implemented, so, we can use their code as instructions for how implement it, but we can't copy the code due to licensing problems.

[Simon-Laux]

no the issue was reported to me, I just forwarded it. - I personally haven't tried it.

[inexcode]

Issue originally reported by me, thanks for forwarding and opening it!