currently we also write our savegame data when OnApplicationQuit() or OnApplicationFocus(false) gets triggered. Our own threaded writing and the Google Cloud Save API work great for both methods.
Now that Google Cloud will be read-only from September 30th we had to migrate to Google Saved Games API which has problems writing the progress in both methods. I guess it’s mainly because you have to open the save game for write and write into it when the opened-callback has been triggered, which never will (or only after the application regains focus). Also there are some timeout-errors when writing the progress on application quit.
Now does anybody has a practical solution for writing to Google Saved Games when the applicationen quits or gets put to the background? And no, I don’t want to cancel the application quit and trigger it after write has finished