Skip to main content
Version: 1.1.x

Start or Join Room - Flutter

After the successful installation of VideoSDK, the next step is to integrate VideoSDK features with your webApp/MobileApp.

To Communicate with other participant's audio or video call, you will need to join the room.

This guide will provide an overview of how to configure, initialize and join a VideoSDK room.

1. Configuration

To configure a room, you will need generated token and roomId, we had discussed in Server Setup. This code snippet calls API from local server

Scenario 1 - Suppose you don't have any roomId, you can simply generate roomId by invoking create-room API.

Scenario 2 - Suppose you have roomId, now you don't have to call create-room API to generate roomId, instead you can call validate-room API to validate roomId.

Token generation API is necessary for both scenario.

import 'dart:convert';
import 'package:http/http.dart' as http; // For API Calling, you need to add third party package "http"
import 'package:videosdk/videosdk.dart';

// States Defined in Stateful Component.
String? roomId;
String? token;

void _getRoomIdAndToken() async {
final LOCAL_SERVER_URL = dotenv.env['LOCAL_SERVER_URL'];

// Calling get-token API.
final Uri tokenUrl = Uri.parse('$LOCAL_SERVER_URL/get-token');
final http.Response tokenResponse = await http.get(tokenUrl);

final dynamic _token = json.decode(tokenResponse.body)['token'];

// Calling create-room API.
final Uri roomIdUrl =

final http.Response roomIdResponse =
await, body: {"token": _token});

final _roomId = json.decode(roomIdResponse.body)['roomId'];

// Setting into states of stateful widget
setState(() {
token = _token;
roomId = _roomId;

// This API is for validate the room id
// Not require to call this API after create room API

dynamic validateRoom(token, roomId) async {
final String LOCAL_SERVER_URL = dotenv.env['LOCAL_SERVER_URL'];
final Uri validateRoomUrl =
final http.Response validateRoomResponse =
await, body: {"token": token});
final _roomId = json.decode(validateRoomResponse.body)['roomId'];
if (_roomId != null) {
return _roomId;
} else {
return null;

2. Initialization

After configuration, you will have to Initialize

room by providing name, roomId, micEnabled, camEnabled & maxResolution.

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

class MyApp extends StatelessWidget {
final Room = VideoSDK.createRoom(
roomId: "<Id-of-Room>",
displayName: "<Name-of-participant>",
micEnabled: "<Flag-to-enable-mic>",
camEnabled: "<Flag-to-enable-cam>",
token: "<Authentication-token>",
notification: const NotificationInfo(
title: "Video SDK",
message: "Video SDK is sharing screen",
icon: "notification_share",
Widget build(BuildContext context) {
return return Container(); // Returning widget

3. Join

After configuration & initialization, the third step is to call join() to join a room.

After joining, you will be able to Manage Participant in a room.

// Join the room


Following events are emitted on the room when it is successfully joined.

  • Local Participant will receive a roomJoined event when successfully joined.
  • Remote Participant will receive a participantJoined event with the newly joined Participant object from the event callback.
room.on(Events.roomJoined, () => {
print("Room Joined Successfully");

room.on(Events.participantJoined, (participant) => {
print("New Participant Joined");

Got a Question? Ask us on discord