[Zubersoft]

eBug - the file manager and file picker aren't exactly the same thing, because with the file picker I actually have to download the file to a temporary location before it can be imported (even if selecting a local file) because of the way Google's API works. If you are managing your own files, for example, this will cause the file to have to be copied to the storage location. 

As far as backup/restore, if I were to support share/send, I would still have to create the backup file first locally, then after that completes, the user could then select the app to share that gigantic file with, and I'm not even sure how well it would work to try to share a potentially several gigabyte file through that mechanism. Also, if you happened to cancel out of selecting an app to share after waiting for the entire backup file to be generated, the process would be canceled. That really doesn't sound like a great user experience, but I can't really avoid that because of how sharing works - you have to have the file you are going to share available before you can share it, and then I invoke Google's API to show you which applications you can share with. I can't just generate the file on the fly and stream the data to another application.

Mike