使用内容提供程序以编程方式在我的日历中添加事件会在几秒钟后删除

Question

事件会在几秒钟后自动从日历中删除。 这是我用来添加事件的代码。我认为这可能是由于事件的同步。搜索很多，但没有得到解决方案。

ContentValues event = new ContentValues();
event.put(CalendarContract.Events.CALENDAR_ID,3 );
java.util.TimeZone timeZone = java.util.TimeZone.getDefault();
event.put(CalendarContract.Events.EVENT_TIMEZONE, timeZone.getID());
event.put(CalendarContract.Events.TITLE, "DUMMY Event");
event.put(CalendarContract.Events.DESCRIPTION, "Birthday");
event.put(CalendarContract.Events.EVENT_LOCATION, "My Guest House");
event.put(CalendarContract.Events.DTSTART, ((Long.parseLong(System.currentTimeMillis()+3600000);
event.put(CalendarContract.Events.DTEND, (Long.parseLong(System.currentTimeMillis()+4200000);
event.put(CalendarContract.Events.ALL_DAY, 0); 
event.put(CalendarContract.Events.HAS_ALARM, 1); event.put(CalendarContract.Events.CALENDAR_TIME_ZONE, timeZone);
Uri baseUri;
if (Build.VERSION.SDK_INT >= 8) {
     baseUri = Uri.parse("content://com.android.calendar/events");
} else {
     baseUri = Uri.parse("content://calendar/events");
}
Uri uri=getContentResolver().insert(baseUri, event);

//获取Gmail日历

public static String getGmailCalendarId(Context c) {

        String projection[] = {"_id", "calendar_displayName"};
        Uri calendars;
        calendars = 
Uri.parse("content://com.android.calendar/calendars");
        ContentResolver contentResolver = c.getContentResolver();
        Cursor managedCursor = contentResolver.query(calendars, 
   projection, null, null, null);
        if (managedCursor.moveToFirst())
        {
            String calName;
            String calID;
            int nameCol = managedCursor.getColumnIndex(projection[1]);
            int idCol = managedCursor.getColumnIndex(projection[0]);
            do
            {
                calName = managedCursor.getString(nameCol);
                calID = managedCursor.getString(idCol);
                if(calName.contains("@gmail")){
                    calenderId = calID;
                }


            } while (managedCursor.moveToNext());
            managedCursor.close();
            return calenderId;
        }

    return calenderId;

}