Export with Custom Dialog to Google Drive produces empty file

[efelantti]

If I create a backup to local path, everything works fine. However, if I choose Google Drive, the file is created but it's size is 0.

This behaviour is on both emulator and physical device - Android 12.

[rafi0101]

Hi @efelantti
thank you for your Information. Unfortunately I am very busy at the moment. If you want, you can try to fix the problem by yourself and create a pull request. Otherwise you will have to be patient for a while.
Sorry for that

[rafi0101]

I can reproduce it, with me also 0 bytes are written. Now I have done a lot of research and testing but unfortunately I can't figure out why this is happening and how to fix it.
I'm very sorry but I'm just a hobby android developer and I don't know what to do.
Maybe we can find a professional developer who can help us.

[Tiemichael]

Quite some time has passed ...
Is there any update regarding this issue?
I realize Restore from Google Drive is working flawless, but Backup is not

Thanks!
(using Poco F2 Pro, Android 12)

[rafi0101]

no unfortunately not.
I have not found out what the problem could be. sorry.

[harissabil]

I think the issue occurs because the stream isn’t handled properly when writing to Google Drive via the Storage Access Framework. After testing, using BufferedOutputStream (like in the restore logic) resolved the problem!

room-backup-google-drive.mp4

Tested on vivo V30 (Android 15)

[rafi0101]

thank you. I will close this issue

[mnkhouri]

I had also tried to debug this, and it seemed like the most important thing was to call close() on the stream. In my testing, using buffered vs unbuffered output stream alone was not sufficient.

The PR #44 does both of those things, so it seems like a great fix!