Owncloud Calendar/DAVDroid synchronisation fails

[zato]

Hi,

I’m experiencing a issue with DAVDroid: I have an owncloud calendar which is already synchronized with my laptop calendar client and works well.

I want to have this calendar on my smartphone too, so I’ve installed DAVDroid to synchronise with stock Android 7’s calendar.

I have two calendar in owncloud: a birthday calendar automatically updated from my contacts, and a personal calendar which I manage myself.
This is only my personal calendar which not working with DAVDroid.
Here is the debug output: https://pastebin.com/raw/mncPAGgF

Any ideas to help me ?

Regards,
Paul

[rfc2822]

Which calendar app do you use?

[zato]

Hi @rfc2822 ,

I’m using Etar from F-Droid, but I’ve also tested with Standalone Calendar with the same message.
I think the problem is not the frontend application but between davdroid and com.android.calendar

[rfc2822]

@zato The problem occurs in this line:

weAreOrganizer = values.getAsInteger(Events.IS_ORGANIZER) != 0;

It seems that IS_ORGANIZER is null in your case, which I haven’t seen before and doesn’t make much sense. I wonder how it can be null and what this value should mean. Therefore I have asked for the calendar app, which has probably set the null value.

In the calendar provider table definition (latest 7.1 version), IS_ORGANIZER can indeed be null:

                CalendarContract.Events.IS_ORGANIZER + " INTEGER," +

Do you think IS_ORGANIZER = null has the same meaning as IS_ORGANIZER = 0?

[zato]

@rfc2822 said in Owncloud Calendar/DAVDroid synchronisation fails:

Do you think IS_ORGANIZER = null has the same meaning as IS_ORGANIZER = 0?

Hum this question is for me ? because I have no idea of the answer, I’m not a developer

Since my last answer, I’ve noticed something: if I create a new empty calendar it can be synchronized with DAVDroid, and if I import my ics file (previously exported from my personal calendar), then the error occurs again.
So maybe there an event in my calendar which can’t be processed ?

[rfc2822]

@zato Maybe the importing process sets this field to null. I’ll have a look at that and process null values as if they were 0, if it doesn’t cause other problems.

[rfc2822]

Should be fixed with davdroid/3132ffbd, which now allows null values for IS_ORGANIZER.

[enoch85]

Change to Nextcloud