Participant Events - Flutter

VideoSDK provides various events that can be utilized to gather information about the participants in the meeting.

Here are the events specifically related to the participant:

Events.participantJoined

• This event is triggered when someone joins the meeting, returning the Participant object as parameter.
• It can be subscribed to using the Room object.

Events.participantLeft

• This event is triggered when someone leaves the meeting, along with the participantId and Reason. You can refer to the reason details here.
• It can be subscribed to using the Room object.
• When Events.participantLeft is triggered, a reason object is also provided.
• The table below outlines the possible reason codes and their descriptions:

Type	Code	Message
WEBSOCKET_DISCONNECTED	1001	Socket disconnected.
REMOVE_PEER	1002	Participant was removed from the meeting.
REMOVE_PEER_VIEWER_MODE_CHANGED	1003	Participant removed because viewer mode was changed.
REMOVE_PEER_MEDIA_RELAY_STOP	1004	Your organization has reached the maximum number of speakers allowed.
SWITCH_ROOM	1005	Participant switched to a different room.
ROOM_CLOSE	1006	The meeting has been closed.
UNKNOWN	1007	Participant disconnected due to an unknown reason.
REMOVE_ALL	1008	Remove All from the meeting.
MEETING_END_API	1009	Meeting Ended.

Events.cameraRequested

• This event is triggered for participant B, when another participant, A requests to enable their webcam.
• Upon accepting the request, participant B's webcam will be enabled.
• It can be subscribed to using the Room object.

Events.micRequested

• This event is triggered for participant B, when another participant, A requests to enable their mic.
• Upon accepting the request, participant B's mic will be enabled.
• It can be subscribed to using the Room object.

Example

Here is an example demonstrating the usage of all the events mentioned on this page.

import 'package:flutter/material.dart';
import 'package:videosdk/videosdk.dart';

class MeetingScreen extends StatefulWidget {
  //Existing configuration
}

class _MeetingScreenState extends State<MeetingScreen> {
  late Room _room;

  @override
  void initState() {
    //Existing configuration

    setupRoomEventListener();
  }

  @override
  Widget build(BuildContext context) {
    return YourMeetingWidget();
  }

  void setupRoomEventListener() {
    _room.on(Events.participantJoined, (Participant participant) {
      // New Participant joined the room
    });

    _room.on(Events.participantLeft, (String participantId , LeaveReason reason) {
      // Participant left the room
    });

    _room.on(Events.cameraRequested, (data) {
      String? participantId = data["participantId"];

      Function accept = data["accept"];
      Function reject = data["deny"];

      // participantId, will be the id of participant who requested to enable camera

      // if the request is accepted
      accept();

      // if the request is rejected
      reject();
    });

    _room.on(Events.micRequested, (data) {
      String participantId = data["participantId"];

      Function accept = data["accept"];
      Function reject = data["reject"];

      // participantId, will be the id of participant who requested to enable camera

      // if the request is accepted
      accept();

      // if the request is rejected
      reject();
    });
  }
}

API Reference

The API references for all the methods and events utilized in this guide are provided below.

• Events.participantJoined
• Events.participantLeft
• Events.cameraRequested
• Events.micRequested