将事件添加到ExtendedCalendarView的困惑

Question

我正在尝试按照https://github.com/tyczj/ExtendedCalendarView说明向日历添加活动。日历显示但我没有看到日期颜色的任何变化。

在我的onCreate方法中，我添加了

    calendar = (ExtendedCalendarView)findViewById(R.id.calendar);
    ContentValues values = new ContentValues();
    values.put(CalendarProvider.COLOR, Event.COLOR_BLUE);
    values.put(CalendarProvider.DESCRIPTION, "Some Description");
    values.put(CalendarProvider.LOCATION, "Some location");
    values.put(CalendarProvider.EVENT, "Event name");

    Calendar cal = Calendar.getInstance();
    TimeZone tz = TimeZone.getDefault();
    cal.set(2015, 8, 1, 1, 1);
    int StartDayJulian = Time.getJulianDay(cal.getTimeInMillis(), TimeUnit.MILLISECONDS.toSeconds(tz.getOffset(cal.getTimeInMillis())));
    values.put(CalendarProvider.START, cal.getTimeInMillis());
    values.put(CalendarProvider.START_DAY, StartDayJulian);

    cal.set(2015, 8, 1, 1, 1);
    int endDayJulian = Time.getJulianDay(cal.getTimeInMillis(), TimeUnit.MILLISECONDS.toSeconds(tz.getOffset(cal.getTimeInMillis())));

    values.put(CalendarProvider.END, cal.getTimeInMillis());
    values.put(CalendarProvider.END_DAY, endDayJulian);

    Uri uri = getContentResolver().insert(CalendarProvider.CONTENT_URI, values);

感谢您的帮助。