The React Native package for 100ms SDK

Usage no npm install needed!

<script type="module">
  import 100msliveReactNativeHms from 'https://cdn.skypack.dev/@100mslive/react-native-hms';



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React native wrapper for 100ms SDK


npm install @100mslive/react-native-hms --save

cd ios/ && pod install

📲 Download the Sample iOS App here: https://testflight.apple.com/join/v4bSIPad

🤖 Download the Sample Android App here: https://appdistribution.firebase.dev/i/7b7ab3b30e627c35


For iOS Permissions

Add following lines in Info.plist file

<string>Please allow access to Camera to enable video conferencing</string>
<string>Please allow access to network usage to enable video conferencing</string>
<string>Please allow access to Microphone to enable video conferencing</string>

For Android Permissions

Add following permissions in AndroidManifest.xml

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.INTERNET" />

You will also need to request Camera and Record Audio permissions at runtime before you join a call or display a preview. Please follow Android Documentation for runtime permissions.

We suggest using react-native-permission to acquire permissions from both platforms.


The package exports all the classes and a HMSSDK class that manages everything.

Setting up the HMS Instance:

first we'll have to call build method, that method returns an instance of HMSSDK class and the same is used to perform all the operations

import { HMSSDK } from '@100mslive/react-native-hms';

const hmsInstance = await HMSSDK.build();
// save this instance, it will be used for all the operations that we'll perform


Add event listeners

add event listeners for all the events such as onPreview, onJoin, onPeerUpdate etc. the actions can be found in HMSUpdateListenerActions class

import { HMSUpdateListenerActions } from '@100mslive/react-native-hms';

// instance acquired from build() method
  previewSuccess, // function that will be called on Preview success


The event handlers are the way of handling any update happening in hms all events can be found in HMSUpdateListenerActions class

Join the room

Joining the room connects you to the remote peer and broadcasts your stream to other peers, we need instance of HMSConfig in order to pass the details of room and user to join function

import { HMSUpdateListenerActions, HMSConfig } from '@100mslive/react-native-hms';

const HmsConfig = new HMSConfig({authToken, userID, roomID});

// instance acquired from build() method
hmsInstance.preview(HmsConfig); // to start preview
// or
hmsInstance.join(HmsConfig); // to join a room


don't forget to add ON_JOIN listener before calling join to receive an event callback

Viewing the video of a peer

To display a video on screen the package provide a UI component named HmsView that takes the video track ID and displays the video in that component, this component requires on width and height in style prop to set bounds of the tile that will show the video stream

import { HMSRemotePeer } from '@100mslive/react-native-hms';

// getting local track ID
const localTrackId: string = hmsInstance?.localPeer?.videoTrack?.trackId;

// getting remote track IDs
const remotePeers: HMSRemotePeer[] = hmsInstance?.remotePeers
const remoteVideoIds: string[] = [];

remotePeers.map((remotePeer: HMSRemotePeer) => {
  const remoteTrackId: string = remotePeer?.videoTrack?.trackId;

  if (remoteTrackId) {


Display a video in HmsView

import { HMSVideoViewMode } from '@100mslive/react-native-hms';

// instance acquired from build() method
const HmsView = hmsInstance?.HmsView;
const styles = StyleSheet.create({
  hmsView: {
    height: '100%',
    width: '100%',

// trackId can be acquired from the method explained above
// sink is passed false video would be removed. It is a ios only prop, for android it is handled by the package itself.
// scaleType can be selected from HMSVideoViewMode as required
// mirror can be passed as true to flip videos horizontally
<HmsView sink={true} style={styles.hmsView} trackId={trackId} mirror={true} scaleType={HMSVideoViewMode.ASPECT_FIT} />


Calling various functions of HMS

// Mute Audio

// Stop Video

// Switch Camera

// Leave the call (async function)
await hmsInstance?.leave();

Sending messages

import { HMSRole, HMSPeer } from '@100mslive/react-native-hms';

const message = 'hello'
const roles: HMSRole[] = hmsInstance?.knownRoles
// any remote peer
const peer: HMSPeer = hmsInstance?.remotePeers[0]

// send a different type of messages
hmsInstance?.sendGroupMessage(message, [role[0]);
hmsInstance?.sendDirectMessage(message, peer);

Error handling

import { HMSUpdateListenerActions } from '@100mslive/react-native-hms';

// add an error event listener
hmsInstance.addEventListener(HMSUpdateListenerActions.ON_ERROR, onError);