[BUG] Android Storage Access Framework implementation potentially incomplete

Actual behaviour

In some apps, owncloud does not show up as storage option e.g. Aegis (a 2FA app for android, it makes it unusable as automatic backup target).

Expected behaviour

Owncloud should show up as storage target similar to the seafile or netcloud app (google drive not tested).

Maybe this could be linked to the missing implementations of certain intents which are needed for this (e.g. https://github.com/beemdevelopment/Aegis/issues/258#issuecomment-570906665)

Steps to reproduce

1. Install owncloud App
2. Try to use owncloud as storage target by apps (e.g. for automatic Aegis backups)

Can this problem be reproduced with the official owncloud server?
(url: https://demo.owncloud.org, user: test, password: test)

Yes

Environment data

Android version: 14

Device model: Multiple Pixel Phones / Samsung Tablets

Stock or customized system: Stock

ownCloud app version:

4.2.1

ownCloud server version:

Logs

Web server error log

not relevant

ownCloud log (data/owncloud.log)

not relevant

Start by reproducing the issue on Android 14 with ownCloud 4.2.1 and an app such as Aegis, then trace the Android Storage Access Framework integration and its intent handling. Compare the behavior with the linked Aegis report and verify that ownCloud appears as a selectable storage target for automatic backups.