As can be seen in [1] Android's default calendar app does not allow to change single instances of an event when the event is not synced (_SYNC_ID is empty).
As local calendars created by CalendarContract.ACCOUNT_TYPE_LOCAL are never synchronized, the option will never be available.
Fix: Don't check for syncId for events from calendars with ACCOUNT_TYPE_LOCAL.
dschuermann
commented
11 years ago
Bug report copied here from upstream AOSP: http://code.google.com/p/android/issues/detail?id=58779
As can be seen in [1] Android's default calendar app does not allow to change single instances of an event when the event is not synced (_SYNC_ID is empty). As local calendars created by CalendarContract.ACCOUNT_TYPE_LOCAL are never synchronized, the option will never be available.
Fix: Don't check for syncId for events from calendars with ACCOUNT_TYPE_LOCAL.
Bug report from my app Offline Calendar: https://github.com/dschuermann/offline-calendar/issues/14
[1] method displayEditWhichDialog() at line 715 at https://android.googlesource.com/platform/packages/apps/Calendar/+/master/src/com/android/calendar/event/EditEventFragment.java