java.lang.NoClassDefFoundError when downloading iCalendar

[skazi]

Hi,

I have a similar problem but with different trace and I get it with v1.7.2-gplay.
Trace:

EXCEPTION:
java.lang.NoClassDefFoundError: java.util.Objects
	at net.fortuna.ical4j.model.TimeZoneRegistryImpl$ZoneOffsetKey.equals(TimeZoneRegistryImpl.java:473)
	at java.util.HashMap.get(HashMap.java:306)
	at net.fortuna.ical4j.model.TimeZoneRegistryImpl.addTransitions(TimeZoneRegistryImpl.java:424)
	at net.fortuna.ical4j.model.TimeZoneRegistryImpl.generateTimezoneForId(TimeZoneRegistryImpl.java:339)
	at net.fortuna.ical4j.model.TimeZoneRegistryImpl.loadVTimeZone(TimeZoneRegistryImpl.java:253)
	at net.fortuna.ical4j.model.TimeZoneRegistryImpl.getTimeZone(TimeZoneRegistryImpl.java:212)
	at at.bitfire.ical4android.MiscUtils.androidifyTimeZone(MiscUtils.kt:30)
	at at.bitfire.ical4android.AndroidEvent.buildEvent(AndroidEvent.kt:470)
	at at.bitfire.davdroid.resource.LocalEvent.buildEvent(LocalEvent.kt:76)
	at at.bitfire.ical4android.AndroidEvent.add(AndroidEvent.kt:370)
	at at.bitfire.ical4android.AndroidEvent.add(AndroidEvent.kt:357)
	at at.bitfire.davdroid.syncadapter.CalendarSyncManager.processVEvent(CalendarSyncManager.kt:201)
	at at.bitfire.davdroid.syncadapter.CalendarSyncManager.downloadRemote(CalendarSyncManager.kt:164)
	at at.bitfire.davdroid.syncadapter.SyncManager.performSync(SyncManager.kt:154)
	at at.bitfire.davdroid.syncadapter.CalendarsSyncAdapterService$SyncAdapter.sync(CalendarsSyncAdapterService.kt:54)
	at at.bitfire.davdroid.syncadapter.SyncAdapterService$SyncAdapter.onPerformSync(SyncAdapterService.kt:62)
	at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:254)

Just like with @varac there is TZID=PST but no VTIMEZONE.
It’s a work calendar so I can’t include it directly here.
The server is running GroupWise which is not developed anymore so there’s no option for server-side fixes

Any ideas?

[rfc2822]

@skazi Can you please send the .ics to play@bitfire.at because I can’t reproduce the problem here with

• TZID=PST and
• no VTIMEZONE

However, it would be important to attach a VTIMEZONE when using TZID. If your server doesn’t receive fixes any more, I suggest switching to a maintained product.

[skazi]

@rfc2822 I mailed an anonymized ics. I was confused before by the debug info message, there seems to be VTIMEZONE present in this ics so maybe it’s completely different issue.
As for switching to another product, this is unfortunately out of my control.

[rfc2822]

I confirm that this time zone definition causes this ical4j exception:

09-10 14:21:22.923 7768-7795/at.bitfire.davdroid:sync W/net.fortuna.ical4j.model.TimeZoneRegistryImpl: Error occurred loading VTimeZone
EXCEPTION java.util.IllegalFormatConversionException: Y != org.threeten.bp.LocalDateTime
   at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:4135)
   at java.util.Formatter$FormatSpecifier.printDateTime(Formatter.java:2871)
   at java.util.Formatter$FormatSpecifier.print(Formatter.java:2779)
   at java.util.Formatter.format(Formatter.java:2497)
   at java.util.Formatter.format(Formatter.java:2426)
   at java.lang.String.format(String.java:2626)
   at net.fortuna.ical4j.model.TimeZoneRegistryImpl.addTransitions(TimeZoneRegistryImpl.java:439)
   at net.fortuna.ical4j.model.TimeZoneRegistryImpl.generateTimezoneForId(TimeZoneRegistryImpl.java:339)
   at net.fortuna.ical4j.model.TimeZoneRegistryImpl.loadVTimeZone(TimeZoneRegistryImpl.java:253)
   at net.fortuna.ical4j.model.TimeZoneRegistryImpl.getTimeZone(TimeZoneRegistryImpl.java:212)
   at net.fortuna.ical4j.data.CalendarBuilder$ContentHandlerImpl.parameter(CalendarBuilder.java:276)
   at net.fortuna.ical4j.data.CalendarParserImpl$ParameterParser.parse(CalendarParserImpl.java:367)
   at net.fortuna.ical4j.data.CalendarParserImpl$ParameterParser.access$1800(CalendarParserImpl.java:322)
   at net.fortuna.ical4j.data.CalendarParserImpl$ParameterListParser.parse(CalendarParserImpl.java:310)
   at net.fortuna.ical4j.data.CalendarParserImpl$PropertyParser.parse(CalendarParserImpl.java:247)
   at net.fortuna.ical4j.data.CalendarParserImpl$PropertyParser.access$1100(CalendarParserImpl.java:229)
   at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:210)
   at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:422)
   at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:406)
   at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:208)
   at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendar(CalendarParserImpl.java:115)
   at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendarList(CalendarParserImpl.java:180)
   at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:149)
   at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:198)
   at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:178)
   at at.bitfire.ical4android.Task$Companion.fromReader(Task.kt:68)

This is already tracked at https://github.com/ical4j/ical4j/issues/170, please follow up there.

[rfc2822]

Has been fixed with ical4j/2.0.5 and ical4android/929555e0.