Cannot use WrTimezone with CalendarBuilder via ExtendedContentHandler

[bannmann]

With ical4j 4.0.0-beta7, it seems impossible to use WrTimezone from ical4j-extensions 2.0.0-beta2.

The reason is that CalendarBuilder does not allow specifying ExtendedContentHandler either in the constructor or via a setter, it always instantiates DefaultContentHandler.

[benfortuna]

Thanks for the feedback. There is a way to use ExtendedContentHandler without CalendarBuilder but I probably haven't documented this well yet.

Here is how I suggest you try ExtendedContentHandler:

Calendar cal = null;
ContentHandler contentHandler = new ExtendedContentHandler(calendar -> { this.cal = calendar; },
TimeZoneRegistryFactory.getInstance().createRegistry());

CalendarParserFactory.instance.get().parse(..., contentHandler);

This is basically what the CalendarBuilder does (replace the ... with your calendar reader/input stream).