Reading all of today's events using CalendarContract - Android 4.0+

Question

I\'m trying to use Android\'s new calendar API to read all of today\'s calendar events. I\'m have trouble finding the right selection on the database query to return all of

Answer 1

I know this is a bit late, but I had a very similar question and had trouble finding the answer I was looking for. The forced-UTC time zone for all-day events made things tricky. Here's my solution:

    // "allDayStart" is an all-day event today, encoded in the default time zone
    Time allDayStart = new Time();
    allDayStart.timezone=TimeZone.getDefault().toString();
    allDayStart.set(dayStart.monthDay, dayStart.month, dayStart.year);

    // 2 time selections for the query: 
        // 1) Between day-start and day-end (not all-day); or
        // 2) Equals today at 0:00:00 (all-day) in the default timezone
    String calSelection = 
        "((" + Calendars.ACCOUNT_NAME + " = ?) " +
            "AND (" + Calendars.OWNER_ACCOUNT + "= ?) " +
            "AND (" +
                "((" + Events.DTSTART + ">= ?) " +
                "AND (" + Events.DTSTART + "<= ?) " +
                "AND (" + Events.ALL_DAY + "= ?) " +
                ") " +
            "OR ((" + Events.DTSTART + "= ?) " +
                "AND (" + Events.ALL_DAY + "= ?)" +
                ")" +
            ")" +
        ")"; 

    String[] calSelectionArgs = new String[] {
        accountName, ownerName, 
        dayStartInMillis.toString(), dayEndInMillis.toString(), "0", // during today, not all day
        allDayStartInMillis.toString(), "1" // Started today at default start-time for all-day events (all-day), default time zone
    }; 

The query could be refined to not need 2 parts, but this was good enough for me.

In case it helps, here's where dayStart and dayEnd came from:

    Time dayStart = new Time();
    dayStart.setToNow();
    dayStart.hour=0;
    dayStart.minute=0;
    dayStart.second=0;

    Time dayEnd = new Time();
    dayEnd.set(dayStart);
    dayEnd.hour=dayStart.hour+23;
    dayEnd.minute=dayStart.minute+59;
    dayEnd.second=dayStart.second+59;

    Long dayStartInMillis = dayStart.toMillis(false);
    Long dayEndInMillis = dayEnd.toMillis(false) + 999;
    Long allDayStartInMillis = allDayStart.toMillis(false);