title: Can't insert multiple events in Google Calendar
body: <p>In my application i'm using the CalendarContract API to manage calendars and events on the Google Calendar. I'm having some problems when adding multiple events to a single calendar. In general, the problem of this method is that whenever i add a new event to the google calendar, the old event is replaced by the new one. Here is the code of my method:</p>
  
  <pre><code>    public int addEvent(Context context, String color, int calendarId, String name, String location, String description, Date dateBegin, Date dateEnd) {
              long startMillisEpoch;
              long endMillisEpoch;
  
              Calendar beginTime = Calendar.getInstance();
              beginTime.setTime(dateBegin);
              startMillisEpoch = beginTime.getTimeInMillis();
  
              Calendar endTime = Calendar.getInstance();
              endTime.setTime(dateEnd);
              endMillisEpoch = endTime.getTimeInMillis();
  
              int eventColor;
              try {
                  eventColor = Color.parseColor(color);
              } catch (Exception e) {
                  // Get a random color
                  Random random = new Random();
                  eventColor = MyApp.RANDOM_COLORS[random.nextInt(MyApp.RANDOM_COLORS.length)];
              }
              ContentValues values = new ContentValues();
              values.put(CalendarContract.Events.CALENDAR_ID, calendarId);
              values.put(CalendarContract.Events.DTSTART, startMillisEpoch);
              values.put(CalendarContract.Events.DTEND, endMillisEpoch);
              values.put(CalendarContract.Events.TITLE, name);
              values.put(CalendarContract.Events.EVENT_LOCATION, location);
              values.put(CalendarContract.Events.DESCRIPTION, description);
              values.put(CalendarContract.Events.EVENT_COLOR, eventColor);
              // NOTE: Every event MUST have a timezone. Otherwise,
              // the application will throw an IllegalArgumentException
              values.put(CalendarContract.Events.EVENT_TIMEZONE, TimeZone.getDefault().getDisplayName());
              // Put default values
              values.put(CalendarContract.Events.ALL_DAY, NON_ALL_DAY);
              values.put(CalendarContract.Events.GUESTS_CAN_INVITE_OTHERS, 1);
              Uri calUri = context.getContentResolver().insert(CalendarContract.Events.CONTENT_URI, values);
              if (calUri != null) {
                  try {
                      return Integer.parseInt(calUri.getLastPathSegment());
                  } catch (Exception e) {
                      return -1;
                  }
              }
              return -1;
          }
  </code></pre>
  
  <p>Any ideas for solving this kind of problem? Kind regards.</p>