One of my calendar items triggers exception reports in DAVDroid. This is probably because something (timezone?) in the calendar entry is invalid, but it would be nice if DAVDroid could handle it more gracefully or tell me what specifically is invalid about the entry.
This is the exception:
--- BEGIN DEBUG INFO ---
SYNCHRONIZATION INFO
Synchronization phase: 9
Account name: ACCOUNTNAME
Authority: com.android.calendar
LOCAL RESOURCE:
LocalEvent=[eTag=fe01ba7c8d4ac4748335c898b3b6654f4331f411, fileName=unknown-20061003T150938Z-12683-1000-1-0@.ics, weAreOrganizer=true, calendar=at.bitfire.davdroid.resource.LocalCalendar@65510d7, event=Event=[alarms=[], attendees=[], classification=CLASS:PUBLIC, color=null, description=null, dtEnd=DTEND;TZID=/softwarestudio.org/Olson_20011030_5/Europe/Amsterdam:20061003T170000, dtStart=DTSTART;TZID=/softwarestudio.org/Olson_20011030_5/Europe/Amsterdam:20061003T150000, duration=null, exDates=[], exRule=null, exceptions=[], lastModified=LAST-MODIFIED:20061003T151024, location=THELOCATION, opaque=true, organizer=null, rDates=[], rRule=null, recurrenceId=null, status=null, summary=Overleg + planning, unknownProperties=[CREATED:20061003T151006
], sequence=3, uid=20061003T150938Z-12683-1000-1-0@, shadow$_klass_=class at.bitfire.ical4android.Event, shadow$_monitor_=0], id=null, shadow$_klass_=class at.bitfire.davdroid.resource.LocalEvent, shadow$_monitor_=0]
REMOTE RESOURCE:
BASEURL/calendar/unknown-20061003T150938Z-12683-1000-1-0%40.ics
EXCEPTION:
java.util.NoSuchElementException
at java.util.Collections$EmptyIterator.next(Collections.java:4235)
at java.util.Collections.min(Collections.java:677)
at net.fortuna.ical4j.model.TimeZoneLoader.addTransitionRules(TimeZoneLoader.java:174)
at net.fortuna.ical4j.model.TimeZoneLoader.generateTimezoneForId(TimeZoneLoader.java:164)
at net.fortuna.ical4j.model.TimeZoneLoader.loadVTimeZone(TimeZoneLoader.java:109)
at net.fortuna.ical4j.model.TimeZoneRegistryImpl.getTimeZone(TimeZoneRegistryImpl.java:181)
at at.bitfire.ical4android.MiscUtils.androidifyTimeZone(MiscUtils.kt:30)
at at.bitfire.ical4android.AndroidEvent.buildEvent(AndroidEvent.kt:482)
at at.bitfire.davdroid.resource.LocalEvent.buildEvent(LocalEvent.kt:76)
at at.bitfire.ical4android.AndroidEvent.add(AndroidEvent.kt:381)
at at.bitfire.ical4android.AndroidEvent.add(AndroidEvent.kt:368)
at at.bitfire.davdroid.syncadapter.CalendarSyncManager.processVEvent(CalendarSyncManager.kt:200)
at at.bitfire.davdroid.syncadapter.CalendarSyncManager.downloadRemote(CalendarSyncManager.kt:163)
at at.bitfire.davdroid.syncadapter.SyncManager.performSync(SyncManager.kt:155)
at at.bitfire.davdroid.syncadapter.CalendarsSyncAdapterService$SyncAdapter.sync(CalendarsSyncAdapterService.kt:55)
at at.bitfire.davdroid.syncadapter.SyncAdapterService$SyncAdapter.onPerformSync(SyncAdapterService.kt:85)
at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:272)
SOFTWARE INFORMATION
Package: at.bitfire.davdroid
Version: 1.9.2-gplay (186) from 4 Nov 2017
Installed from: com.android.vending
JB Workaround installed: no
CONNECTIVITY (at the moment)
Active connection: WiFi, CONNECTED
CONFIGURATION
Power saving disabled: yes
android.permission.READ_CONTACTS permission: granted
android.permission.WRITE_CONTACTS permission: granted
android.permission.READ_CALENDAR permission: granted
android.permission.WRITE_CALENDAR permission: granted
org.dmfs.permission.READ_TASKS permission: granted
org.dmfs.permission.WRITE_TASKS permission: granted
System-wide synchronization: automatically
Account: ACCOUNT
Address book sync. interval: 240 min
Calendar sync. interval: 240 min
OpenTasks sync. interval: 240 min
WiFi only: false
[CardDAV] Contact group method: CATEGORIES
[CalDAV] Time range (past days): 90
Manage calendar colors: true
SQLITE DUMP
android_metadata
| locale |
| en_GB |
----------
services
| _id | accountName | service | principal |
...
| 2 | ACCOUNT | caldav | BASEURL |
----------
sqlite_sequence
| name | seq |
| services | 2 |
| homesets | 3 |
| collections | 15 |
----------
homesets
| _id | serviceID | url |
...
| 3 | 2 | BASEURL |
----------
collections
| _id | serviceID | url | readOnly | displayName | description | color | timezone | supportsVEVENT | supportsVTODO | sync | type | source |
...
| 10 | 2 | BASEURL/calendars/calendar/ | 0 | calendar | Personal calendar.<LF> | -16738048 | <null> | 1 | 1 | 1 | CALENDAR | <null> |
...
----------
SYSTEM INFORMATION
Android version: 8.0.0 (OPR4.170623.009)
Device: LGE Nexus 5X (bullhead)
--- END DEBUG INFO ---
(LOCATION, ACCOUNT and BASEURL replaced)
Problematic ical file attached.
0_1510088423219_unknown-20061003T150938Z-12683-1000-1-0@.ics