终于让我找到了解决办法。

finally I found the solution.

values.put(Events.DTSTART, startMillis);
values.put(Events.DURATION, "P1800S");
values.put(Events.TITLE, "MyTestNew");
values.put(Events.DESCRIPTION, "Group workout");
values.put(Events.CALENDAR_ID, calID);
values.put(Events.EVENT_TIMEZONE, "India");
values.put(Events.RRULE, "FREQ=DAILY;INTERVAL=3");
uri = cr.insert(Events.CONTENT_URI, values);