Can't trigger CalDAV update on sync (endless loading)

[TekkertheChaot]

Checklist

• I can reproduce the bug with the latest version given here.
• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.
• I have read and understood the contribution guidelines.

Affected app version

1.0.3

Affected Android/Custom ROM version

Stock Samsung Android 14 / OneUI 6.1

Affected device model

Samsung Galaxy Flip 3

How did you install the app?

F-Droid / IzzyOnDroid

Steps to reproduce the bug

Setup:
Using Nextcloud as a CalDAV server and DAVx⁵ for managing DAV resources (connector to nextcloud in this case)

1. in nextcloud: create an event in a synced calendar.
2. in the app: go to the day the event was created on the server
3. trigger a sync / update of the calendar
4. --> Forever loading...

Expected behavior

Finish loading, update the calendar

Actual behavior

loads forever, never updates the calendar

Screenshots/Screen recordings

(sorry for low bitrate, had to compress it to fit the upload size imit)
https://github.com/FossifyOrg/Calendar/assets/17234581/38079b73-4771-4a70-93e9-97c3973c68ff

Additional information

other calendar apps like SPlanner are able to trigger a CalDAV update / sync
Here is a logcat:
logcat_11072024_1352.log

[Aga-C]

Related to #193.

[TekkertheChaot]

Ahhh okay i overlooked that. I read the title and dismissed it prematurely... Should i close this one as a duplicate?

[Aga-C]

It's not a duplicate. I just linked these two issues because they are similar to each other and may have the same root cause. If it were a duplicate, I'd close it 🙂

[mpxx1]

Dev: Samsung Galaxy A32
Using Nextcloud as a CalDAV server and DAVx⁵ for managing DAV resources (connector to nextcloud in this case)
Installed from F-Droid, version 1.0.3
Android 11

Had the same issue, but it's gone after i switched off and on 'CalDAV sync' button in calendar settings
After that davx5 sync have also start working for calendar, but if i call sync inside app (pulling down reload) it shows massage that it's successfully done, but it's actually not.

But i have no this problem on xiaomi (android 10) and realme (android 14) phones

[opa-rudi]

I also have this problem on a rooted crdroid Samsung Galaxy S20. Manual syncing with davx5 (with baikal server) when swiping down in the app results in stucking (endless loading circle, but the syncing message at the bottom of the app disappears). It looks like the app is unable to trigger a davx5 sync. I have to wait until davx5 itself updates the data. Re-enabling caldav sync in the settings does not work for me.

[goldnetcoding]

Related to #656.