Timezone issues when Syncing with DavDroid 0.8.4.1



  • Dear Sir or Madam,

    in our company I have written an own caldav server. We recommend our custoumers to use DavDroid, because it is a smart and small solution to sync Events.
    My Problem:
    Since we have updated to DavDroid 0.8.4.1 we have an issue with the timezones. Creating an event at 13 o'clock (duration is 1 hour) and syncing with the Timezone "Berlin", we received the following iCalender protocol:

    BEGIN:VCALENDAR
    VERSION:2.0
    PRODID:-//bitfire web engineering//DAVdroid 0.8.4.1 (ical4j 2.0-beta1)//EN
    BEGIN:VEVENT
    CLASS:PUBLIC
    DTEND;TZID=Europe/Berlin:20150917T160000
    DTSTAMP:20150907T071404Z
    DTSTART;TZID=Europe/Berlin:20150917T150000
    SEQUENCE:0
    STATUS:Tentative
    SUMMARY:Zhfzjbhnfgcthgmhbhjchzvn23zgjuhijhgkjh
    UID:20150907T065954Z3470_63C154F3AEC4EB1A
    END:VEVENT
    BEGIN:VTIMEZONE
    TZID:Europe/Berlin
    TZURL:http://tzurl.org/zoneinfo/Europe/Berlin
    END:VTIMEZONE
    END:VCALENDAR
    

    The start date is automatically +2 hours. Is this correct? Because when I sync with an Apple Smartphone there are no problems with the timezone ("Berlin" too) and the start date is the same as I selected. But the DavDroid app on my Android tablet is adding the timezone to the start date.

    I would really appreciate to hear from you soon.

    • "DAVdroid 0.8.4.1 to own written caldav server"
    • "Samsung Galaxy Tab 2 with Android 4.1.2"
    • "Own written caldav server"

    Thank you for your help.

    Sincerely,

    Marc


  • admin

    Hi Marc,

    we just tried to reproduce this but we couldn't find any problem with the timezones... We've tested on a Samsung Galaxy Note 10.1 and Galaxy S6 edge. The times were correctly written into the ics file (we tried with the standard summer time and with explicitly using the Berlin timezone).

    Can you create logs from your phone/tablet while you're creating the event?

    Here is a guide to make logs: https://github.com/bitfireAT/davdroid/wiki/How-to-view-the-logs

    The start date must be the value set by the user in any case. It is not correct that the start date is set +2 hours. Maybe this is some issue of the calendar app?

    Best regards,
    Bernhard


  • admin

    Another hint: are you sure that the "wrong" appointment has been created with 0.8.4.1? If it was created with a version between 0.8.1 and 0.8.3 it could be that the event is still wrong in the database. Only new created events will have the correct timezones again, because there was an issue with a third party library we're using that had a bug in the latest version (which was fixed with 0.8.4).



  • Hi Bernhard,

    here is the log from the PUT request:

    D/HttpClient(16276): Executing request PUT /dav/calendars/XXXXX
    /XXXXXKalender/20150908T062457Z-16276_63c154f3aec4eb1a.ics HTTP/1.1
    D/HttpClient(16276): Target auth state: SUCCESS
    D/HttpClient(16276): Proxy auth state: UNCHALLENGED
    D/Wire    (16276): http-outgoing-3 >> "PUT /dav/calendars/XXXXX
    /XXXXXKalender/20150908T062457Z-16276_63c154f3aec4eb1a.ics HTTP/1.1[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "If-None-Match: *[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "Content-Type: text/calendar; 
    charset=UTF-8[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "Content-Length: 3784[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "Host: XXXXXX[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "Connection: Keep-Alive[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "User-Agent: DAVdroid/0.8.4.1[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "Authorization: Basic 
    XXXXX[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:VCALENDAR[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "VERSION:2.0[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "PRODID:-//bitfire web 
    engineering//DAVdroid 0.8.4.1 (ical4j 2.0-beta1)//EN[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:VEVENT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTAMP:20150908T062458Z[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> 
    "UID:20150908T062457Z-16276_63c154f3aec4eb1a[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> 
    "DTSTART;TZID=Europe/Amsterdam:20150927T100000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> 
    "DTEND;TZID=Europe/Amsterdam:20150927T110000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "SUMMARY:Timezone test davdroid[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "STATUS:TENTATIVE[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> 
    "ORGANIZER:mailto:XXXXX[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:VEVENT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:VTIMEZONE[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZID:Europe/Amsterdam[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> 
    "TZURL:http://tzurl.org/zoneinfo/Europe/Amsterdam[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "X-LIC-LOCATION:Europe/Amsterdam[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0100[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0200[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:CEST[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19810329T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> 
    "RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0200[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0100[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:CET[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19961027T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> 
    "RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+001932[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+001932[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:AMT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:18350101T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:18350101T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+001932[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+011932[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:NST[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19160501T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19160501T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19170416T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19180401T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19190407T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19200405T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19210404T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19220326T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19230601T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19240330T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19250605T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19260515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19270515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19280515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19290515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19300515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19310515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19320522T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19330515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19340515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19350515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19360515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19370522T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+011932[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+001932[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:AMT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19161001T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19161001T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19170917T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19180930T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19190929T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19200927T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19210926T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19221008T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19231007T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19241005T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19251004T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19261003T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19271002T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19281007T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19291006T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19301005T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19311004T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19321002T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19331008T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19341007T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19351006T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19361004T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+011932[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0120[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:NEST[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19370701T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19370701T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0120[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0020[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:NET[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19371003T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19371003T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19381002T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19391008T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0020[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0120[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:NEST[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19380515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19380515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19390515T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0020[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0200[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:CEST[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19400516T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19400516T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0200[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0100[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:CET[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19421102T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19421102T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19431004T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19441002T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19450916T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19770925T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19781001T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19790930T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19800928T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19810927T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19820926T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19830925T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19840930T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19850929T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19860928T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19870927T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19880925T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19890924T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19900930T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19910929T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19920927T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19930926T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19940925T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19950924T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0100[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0200[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:CEST[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19430329T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19430329T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19440403T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19450402T030000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19770403T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19780402T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19790401T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19800406T020000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:DAYLIGHT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "BEGIN:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETFROM:+0100[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZOFFSETTO:+0100[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "TZNAME:CET[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "DTSTART:19770101T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "RDATE:19770101T000000[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:STANDARD[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:VTIMEZONE[\r][\n]"
    D/Wire    (16276): http-outgoing-3 >> "END:VCALENDAR[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "HTTP/1.1 201 Created[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "Cache-Control: no-store, no-cache, 
    must-revalidate, post-check=0, pre-check=0[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "Transfer-Encoding: chunked[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "Allow: OPTIONS, GET, HEAD, POST, PUT, 
    DELETE, PROPFIND, LOCK, REPORT[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "Server: Microsoft-IIS/7.5[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "DAV: 1, access-control, 
    calendar-access, calendar-schedule, calendar-auto-schedule, 
    calendar-proxy[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "X-AspNet-Version: 4.0.30319[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "X-Powered-By: ASP.NET[\r][\n]"
    D/Wire    (16276): http-outgoing-3 << "Date: Tue, 08 Sep 2015 06:24:59 
    GMT[\r][\n]"
    

    In the log the dtstart is set to 10 o'clock, the dtend to 11 o'clock. But in the davdroid app i selected the startdate as 12 o'clock and the enddate as 13 o'clock.
    We have an own written caldav server for android and iOS. When i sync with iOS the start and enddate values identical to the log. In the log and after saving on my iPhone the start and enddate values are i.e. 12 - 13 o'clock (iOS) . But when i sync with davdroid the log is subtracting the timezone value off of the datetime?

    I hope you can help me. Thank you in advance.

    Best regards,

    Marc



  • I found the issue! My Problem was, that the "S Planner" Version which I use is maybe to old. When i test it with the google calendar app in combination with davdroid it will work fine!
    Thanks for your help.

    Best regards,
    Marc


  • admin

    Ah I see, great that you found it out and thanks for the update!



  • Hey Bernhard,

    i have the same Problems now with the google calendar app too!
    There was no DavDroid update. When i create an account and sync my events, the server sends it in the correct format, but the calendar apps don't show the correct time. They added to my eventbegin and my eventend two hours (the two hours come from the TimeZone "Europe/Berlin"). I can't calculate the eventbegin and eventend, cause in iOS calendar all events are fine.

    An example how my vcalendar looks like is in the first post.

    We need a solution for our customers.

    Thanks for your help.
    Best regards,

    Marc



  • Hey Bernhard,

    i fixed this issue. The problem was that Android (maybe DavDroid?) can't handle the VTIMEZONE Part. When i remove this from my VCALENDAR, the events are displayed correctly.

    Can u explain me, what happend there? Where the calculation is carried out?

    Another Question: Is there a newsletter for DavDroid updates in advance for developers?

    Thanks for your help.
    Best regards,

    Marc


  • admin

    Hi Marc,

    there is no newsletter, sorry. The earliest chance to see whats upcoming is to be in the beta tester group in the forum.
    Maybe your calendar file with VTIMEZONE had some errors or so? Did you validate the calendar in a validator when having the VTIMEZONE in it?

    DAVdroid does handle the VTIMEZONE.

    Can you make a test account for us, then we can have a look at it.



  • Hi Bernhard,

    yes your offer to be in the beta tester group would be appreciated.
    I will send you a private message with the username and password for our caldav server.

    Thanks for your help.
    Best regards,

    Marc


  • developer

    I have just tested with DAVdroid/0.9.0.2 and the credentials you have sent, and everything works for me.

    I think it's a problem with your Calendar app. Which one do you use? DAVdroid takes the time (and time zone) information directly from the Calendar Provider, which is filled by your Calendar app.

    I have tried with Etar (and just found another bug in it, but it's not related to yours) and Samsung S Planner, both worked for me.

    Which calandar app do you use? Can you try another one?



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