RTFM！

我不在优秀的uri上。正确的插入必须位于 https://www.googleapis.com/calendar/v3/calendars

I was not on the good uri. The correct insertion must be on https://www.googleapis.com/calendar/v3/calendars

而不是 https://www.googleapis.com/calendar/v3/users/me/calendarList 。

代码是：

    Calendar newCal = new Calendar();
    newCal.setSummary(calTitle);
    newCal.setTimeZone("Europe/Paris");

    Calendar createdCalendar = null;
    try {
        createdCalendar = service.calendars().insert(newCal).execute();
    } catch (Exception e){
        e.printStackTrace();
    }