private void updateFollowButton() {
    final FollowState followState = getDrone().getAttribute(AttributeType.FOLLOW_STATE);
    if (followState == null) return;

    switch (followState.getState()) {
      case FollowState.STATE_START:
        followBtn.setBackgroundColor(orangeColor);
        break;
      case FollowState.STATE_RUNNING:
        followBtn.setActivated(true);
        followBtn.setBackgroundResource(R.drawable.flight_action_row_bg_selector);
        break;
      default:
        followBtn.setActivated(false);
        followBtn.setBackgroundResource(R.drawable.flight_action_row_bg_selector);
        break;
    }
  }
        @Override
        public void onReceive(Context context, Intent intent) {
          final String action = intent.getAction();
          switch (action) {
            case AttributeEvent.STATE_ARMING:
            case AttributeEvent.STATE_CONNECTED:
            case AttributeEvent.STATE_DISCONNECTED:
            case AttributeEvent.STATE_UPDATED:
              setupButtonsByFlightState();
              break;

            case AttributeEvent.STATE_VEHICLE_MODE:
              updateFlightModeButtons();
              break;

            case AttributeEvent.FOLLOW_START:
            case AttributeEvent.FOLLOW_STOP:
              final FollowState followState = getDrone().getAttribute(AttributeType.FOLLOW_STATE);
              if (followState != null) {
                String eventLabel = null;
                switch (followState.getState()) {
                  case FollowState.STATE_START:
                    eventLabel = "FollowMe enabled";
                    break;

                  case FollowState.STATE_RUNNING:
                    eventLabel = "FollowMe running";
                    break;

                  case FollowState.STATE_END:
                    eventLabel = "FollowMe disabled";
                    break;

                  case FollowState.STATE_INVALID:
                    eventLabel = "FollowMe error: invalid state";
                    break;

                  case FollowState.STATE_DRONE_DISCONNECTED:
                    eventLabel = "FollowMe error: drone not connected";
                    break;

                  case FollowState.STATE_DRONE_NOT_ARMED:
                    eventLabel = "FollowMe error: drone not armed";
                    break;
                }

                if (eventLabel != null) {
                  HitBuilders.EventBuilder eventBuilder =
                      new HitBuilders.EventBuilder()
                          .setCategory(GAUtils.Category.FLIGHT)
                          .setAction(ACTION_FLIGHT_ACTION_BUTTON)
                          .setLabel(eventLabel);
                  GAUtils.sendEvent(eventBuilder);

                  Toast.makeText(getActivity(), eventLabel, Toast.LENGTH_SHORT).show();
                }
              }

              /* FALL - THROUGH */
            case AttributeEvent.FOLLOW_UPDATE:
              updateFlightModeButtons();
              updateFollowButton();
              break;
          }
        }