NumberFormatException in 1.11-ose

[bovender]

Hello,

I recently experience crashes during sync:

--- BEGIN DEBUG INFO ---
Account name: [REDACTED]
Authority: org.dmfs.tasks

EXCEPTION:
java.lang.NumberFormatException: For input string: ""
	at java.lang.Integer.parseInt(Integer.java:533)
	at java.lang.Integer.parseInt(Integer.java:556)
	at net.fortuna.ical4j.model.property.Priority.setValue(Priority.java:218)
	at net.fortuna.ical4j.data.CalendarBuilder$ContentHandlerImpl.propertyValue(CalendarBuilder.java:299)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyParser.parse(CalendarParserImpl.java:282)
	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$Companion.fromReader(Task.kt:66)
	at at.bitfire.davdroid.syncadapter.TasksSyncManager.processVTodo(TasksSyncManager.kt:149)
	at at.bitfire.davdroid.syncadapter.TasksSyncManager.processRemoteChanges(TasksSyncManager.kt:138)
	at at.bitfire.davdroid.syncadapter.SyncManager.performSync(SyncManager.kt:127)
	at at.bitfire.davdroid.syncadapter.TasksSyncAdapterService$TasksSyncAdapter.sync(TasksSyncAdapterService.kt:63)
	at at.bitfire.davdroid.syncadapter.SyncAdapterService$SyncAdapter.onPerformSync(SyncAdapterService.kt:77)
	at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:272)

SOFTWARE INFORMATION
Package: at.bitfire.davdroid
Version: 1.11-ose (213) from 14.04.2018
Installed from: com.google.android.packageinstaller
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: [REDACTED]
  Address book sync. interval: 240 min
  Calendar     sync. interval: 60 min
  OpenTasks    sync. interval: 240 min
  WiFi only: false
  [CardDAV] Contact group method: GROUP_VCARDS
  [CalDAV] Time range (past days): 30
           Manage calendar colors: false
Address book account: [REDACTED]
  Main account: Account {name=[REDACTED], type=bitfire.at.davdroid}
  URL: [REDACTED]
  Sync automatically: true

SQLITE DUMP
android_metadata
	|  locale |
	|  de_DE |
----------
services
	|  _id | accountName | service | principal |
	|  1 | [REDACTED] |
	|  2 | [REDACTED] |
----------
sqlite_sequence
	|  name | seq |
	|  services | 2 |
	|  homesets | 20 |
	|  collections | 89 |
----------
homesets
	|  _id | serviceID | url |
	|  17 | 1 | [REDACTED] |
	|  18 | 1 | [REDACTED] |
	|  19 | 2 | [REDACTED] |
	|  20 | 2 | [REDACTED] |
----------
collections
[REDACTED]
----------

SYSTEM INFORMATION
Android version: 7.0 (NRD90M.G930FXXS2DRC3)
Device: samsung SM-G930F (herolte)

--- END DEBUG INFO ---

I’m syncing with Horde Groupware. Has been working flawlessly for over a year. Is there any way for me to find out the offending object?

[rfc2822]

Unfortunately, I have forgotten to show the resource names for tasks (in contrast to events and contacts). Should be fixed with https://gitlab.com/bitfireAT/davdroid/commit/fd84ff37e5f93d00f4a162ea5d5cd6724b1c0a1f

Regarding your problem: Sounds like an invalid task file. Please enable debug logs (see screenshot on https://www.davdroid.com/faq/how-to-debug/) and have a look at them. They should contain all necessary information.

Does this help?

[bovender]

The debug log unfortunately did not really help me.

Interestingly, when I deactivated sync for all 6 task lists (keeping only the address books activated for sync), the problem disappeared. However, regardless which of the task lists I subsequently re-activated, I always got the sync problem. I then purged tasks (within Horde) that had been completed more than 30 days ago – no more synchronization problems. But current tasks no longer appeared on the smart phone either! Luckily, when I now add new tasks, they appear both on the Android device as well as inside horde.

So, long story short, did not find the cause of the problem, but was somehow able to solve it (with side effects though – would have liked to keep the current tasks on my mobile.