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Build using UI Kit

Last updated Jul 9, 2026Copy as MarkdownView as MarkdownAgent setup

OverviewInitialize the SDKCreate a meeting componentDisplay the meetingImport the SDKDisplay the meetingInitialize the SDKLoad the moduleDisplay the meetingInitialize the SDKInitialize and display the meetingInitialize and display the meetingInitialize and display the meetingInitialize the SDKDisplay the meetingNext stepsBuild a custom meeting experience

The default RealtimeKit Meeting UI component gives you a complete meeting experience out of the box, with all the essential features built in. Drop it into your app and you are ready to go.

Select a framework based on the platform you are building for.

WebMobile

ReactWeb ComponentsAngular

Please install the following dependencies into your project repository:

npm i @cloudflare/realtimekit-react @cloudflare/realtimekit-react-ui

Optional: You can also build on top of our ready-made template:

git clone https://github.com/cloudflare/realtimekit-web-examples.git
cd realtimekit-web-examples/react-examples/examples/default-meeting-ui

Please install the following dependencies into your project repository:

npm i @cloudflare/realtimekit-web @cloudflare/realtimekit-ui

Optional: You can also build on top of our ready-made template:

git clone https://github.com/cloudflare/realtimekit-web-examples.git
cd realtimekit-web-examples/html-examples/examples/default-meeting-ui

Please install the following dependencies into your project repository:

npm i @cloudflare/realtimekit-angular @cloudflare/realtimekit-angular-ui

Optional: You can also build on top of our ready-made template:

git clone https://github.com/cloudflare/realtimekit-web-examples.git
cd realtimekit-web-examples/angular-examples/examples/default-meeting-ui

Add the following dependency to your build.gradle file:

dependencies {
  implementation 'com.cloudflare.realtimekit:ui-android:0.3.0'
}

Install the RealtimeKit UI Kit using Swift Package Manager:

In Xcode, go to File > Add Package Dependencies.
Enter the package URL: https://github.com/dyte-in/RealtimeKitUI.
Select the version and add the package to your project.

Add the following entries to the Info.plist file. This gives your app permissions to access the camera and microphone, access photos, and install the required fonts and icons.

<key>NSBluetoothPeripheralUsageDescription</key>
<string>Access Bluetooth to connect to headphones and audio devices during calls.</string>
<key>NSBluetoothAlwaysUsageDescription</key>
<string>Access Bluetooth to connect to headphones and audio devices during calls.</string>
<key>NSCameraUsageDescription</key>
<string>Access camera to enable video during meetings.</string>
<key>NSMicrophoneUsageDescription</key>
<string>Access microphone to enable audio during meetings.</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>Access photos to share images during meetings.</string>
<key>UIBackgroundModes</key>
<array>
  <string>audio</string>
  <string>voip</string>
  <string>fetch</string>
  <string>remote-notification</string>
</array>

The UIBackgroundModes key is used in the Info.plist file of an iOS app to declare the app's supported background execution modes. This key is an array of strings that specifies the types of background tasks that the app supports. By declaring the background modes, the app can continue to run in the background and perform specific tasks even when it is not in the foreground.

Note

The use of background modes should be justified and comply with Apple's App Store Review Guidelines. Apps that misuse background modes or unnecessarily run in the background may be rejected during the app review process.

Source: Apple Developer Documentation: Declaring Your App's Supported Background Tasks

Install the RealtimeKit UI Kit by adding the dependency to your pubspec.yaml file:

flutter pub add realtimekit_ui

Then import the package into your project:

import 'package:realtimekit_ui/realtimekit_ui.dart';

Set compileSdkVersion 36 and minSdkVersion 24 in your build.gradle file at <project root>/android/app/build.gradle:

defaultConfig {
  ...
  compileSdkVersion 36
  minSdkVersion 24
  ...
}

Change the Kotlin version to 1.9.0:

ext.kotlin_version = '1.9.0'

Set your platform to iOS 13.0 or above in your Podfile:

platform :ios, '13.0'

Add the following entries to the Info.plist file. This gives your app permissions to access the camera and microphone, access photos, and install the required fonts and icons.

<key>NSBluetoothPeripheralUsageDescription</key>
<string>Access Bluetooth to connect to headphones and audio devices during calls.</string>
<key>NSBluetoothAlwaysUsageDescription</key>
<string>Access Bluetooth to connect to headphones and audio devices during calls.</string>
<key>NSCameraUsageDescription</key>
<string>Access camera to enable video during meetings.</string>
<key>NSMicrophoneUsageDescription</key>
<string>Access microphone to enable audio during meetings.</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>Access photos to share images during meetings.</string>
<key>UIBackgroundModes</key>
<array>
  <string>audio</string>
  <string>voip</string>
  <string>fetch</string>
  <string>remote-notification</string>
</array>

Optional: If you are allowing users to download attachments in chat, add the following permissions to your Info.plist:

<key>LSSupportsOpeningDocumentsInPlace</key>
<true/>
<key>UIFileSharingEnabled</key>
<true/>

Minimum requirements: React Native 0.84 or above, React 19 or above.

Install the dependencies:

npm install @cloudflare/realtimekit-react-native @cloudflare/react-native-webrtc @cloudflare/realtimekit-react-native-ui @react-native-documents/picker react-native-file-viewer react-native-fs react-native-sound-player react-native-webview react-native-svg@^15.13.0 react-native-safe-area-context@^5.0.0

Minimum Expo version: 56 or above.

Install the dependencies:

npx expo install @cloudflare/realtimekit-react-native-ui @cloudflare/realtimekit-react-native @cloudflare/react-native-webrtc @react-native-documents/picker react-native-file-viewer react-native-fs react-native-sound-player react-native-webview react-native-svg@^15.13.0 react-native-safe-area-context@^5.0.0

Install Expo config plugins:

npx expo install @expo/config-plugins

Add the plugins to your app.json:

{
	"expo": {
		"plugins": [
			"@cloudflare/realtimekit-react-native",
			"@cloudflare/react-native-webrtc"
		]
	}
}

Run prebuild to set up native modules:

npx expo prebuild

The following instructions are for release builds. Debug builds should work without additional steps.

Edit your android/gradle.properties and add the following lines:

android.useFullClasspathForDexingTransform=true

Add a required blob_provider_authority string resource in the strings.xml file:

<resources>
  ...
  <string name="blob_provider_authority">YOUR_APP_RESOURCE_NAME</string>
  ...
</resources>

Create or append to the file android/app/proguard-rules.pro:

-keep class realtimekit.org.webrtc.** { *; }
-dontwarn org.chromium.build.BuildHooksAndroid

In your android/app/build.gradle, edit the release configuration and add the following line importing the ProGuard configuration:

buildTypes {
  release {
    ...
    proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  }
}

Background audio and video (Android)

The SDK includes an Android foreground service that keeps audio and video running when the app moves to the background. The service starts automatically when a participant joins a meeting and stops when they leave.

By default the service is enabled with generic notification text. To customize the notification or disable the service, pass keepAliveService to the useRealtimeKitClient hook before calling initMeeting:

const [meeting, initMeeting] = useRealtimeKitClient({
  keepAliveService: {
    enabled: true,                        // set to false to disable entirely
    title: "Team call",                   // notification title
    text: "Tap to return to your meeting", // notification body
  },
});

On Android 13 and above, the SDK automatically requests the POST_NOTIFICATIONS permission so the notification appears in the shade. No additional setup is required.

Minimum supported iOS version: 15.1.

Open your Podfile and set the platform to iOS 15.1:

platform :ios, '15.1'

Add the following permission entries to your Info.plist file:

<key>NSCameraUsageDescription</key>
<string>Access camera to enable video during meetings.</string>
<key>NSMicrophoneUsageDescription</key>
<string>Access microphone to enable audio during meetings.</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>Access photos to share images during meetings.</string>
<key>UIViewControllerBasedStatusBarAppearance</key>
<false/>

iOS screen sharing requires a Broadcast Upload Extension and additional native setup. Refer to the Screen Share Setup (iOS) guide for full instructions.

Once native setup is complete, pass iOSScreenshareEnabled={true} to RtkMeeting to enable the screen share button in the UI:

<RtkMeeting meeting={meeting} iOSScreenshareEnabled={true} />

Initialize the SDK

Add the following code to your React application:

App.tsxts

import { useEffect } from 'react';
import { useRealtimeKitClient } from '@cloudflare/realtimekit-react';

export default function App() {
  const [meeting, initMeeting] = useRealtimeKitClient();
  useEffect(() => {
    initMeeting({ authToken: '<auth-token>' });
  }, []);

  return <div></div>;
}

Use the Add participant API to fetch the authToken.

Create a meeting component

Use the RtkMeeting component and the useRealtimeKitMeeting hook. This hook provides access to the meeting object that contains all the meeting state and methods.

MyMeetingUI.tsxts

import { useRealtimeKitMeeting } from '@cloudflare/realtimekit-react';
import { RtkMeeting } from '@cloudflare/realtimekit-react-ui';

export default function MyMeetingUI() {
  const { meeting } = useRealtimeKitMeeting();
  return (
    <RtkMeeting mode="fill" meeting={meeting} showSetupScreen={true} />
  );
}

Display the meeting

Wrap your meeting component in RealtimeKitProvider:

App.tsxts

import { useEffect } from 'react';
import { useRealtimeKitClient, RealtimeKitProvider } from '@cloudflare/realtimekit-react';
import MyMeetingUI from './MyMeetingUI.tsx'

export default function App() {
  const [meeting, initMeeting] = useRealtimeKitClient();

  useEffect(() => {
    initMeeting({ authToken: '<auth-token>' });
  }, []);

  return (
    <RealtimeKitProvider value={meeting}>
      <MyMeetingUI />
    </RealtimeKitProvider>
  );
}

Import the SDK

Add the following imports to your HTML file:

index.htmlhtml

<!DOCTYPE html>
<html lang="en">
	<head>
		<!-- Import helper to load UI Kit components -->
		<script type="module">
			import { defineCustomElements } from "https://cdn.jsdelivr.net/npm/@cloudflare/realtimekit-ui@latest/loader/index.es2017.js";
			defineCustomElements();
		</script>
		<!-- Import RealtimeKit Core via CDN -->
		<script src="https://cdn.jsdelivr.net/npm/@cloudflare/realtimekit@latest/dist/browser.js"></script>
	</head>
</html>

Display the meeting

Use the rtk-meeting component to render the meeting UI:

<body>
	<rtk-meeting id="my-meeting" show-setup-screen="true" />
</body>

Initialize the SDK

Pass the authToken and connect the meeting object to the UI component:

Use the Add participant API to fetch the authToken.

<script>
	const authToken = "<auth-token>";
	// Initialize the SDK
	RealtimeKitClient.init({
		authToken,
	}).then((meeting) => {
		document.getElementById("my-meeting").meeting = meeting;
	});
</script>

Load the module

Load RTKComponentsModule into your app module. This is typically the app.module.ts file and allows you to use the UI components in your component HTML files.

import { NgModule } from "@angular/core";
import { BrowserModule } from "@angular/platform-browser";
import { RTKComponentsModule } from "@cloudflare/realtimekit-angular";
import { AppComponent } from "./app.component";

@NgModule({
	declarations: [AppComponent],
	imports: [BrowserModule, RTKComponentsModule],
	providers: [],
	bootstrap: [AppComponent],
})
export class AppModule {}

Optional: If you are using TypeScript, set allowSyntheticDefaultImports as true in your tsconfig.json.

{
	"compilerOptions": {
		"allowSyntheticDefaultImports": true
	}
}

Display the meeting

Load the RtkMeeting component in your template file (component.html):

<rtk-meeting #myid></rtk-meeting>

Initialize the SDK

class AppComponent {
	title = "MyProject";
	@ViewChild("myid") meetingComponent: RtkMeeting;
	rtkMeeting: RealtimeKitClient;

	async ngAfterViewInit() {
		const meeting = await RealtimeKitClient.init({
			authToken: "<auth-token>",
		});
		meeting.join();
		this.rtkMeeting = meeting;
		if (this.meetingComponent) this.meetingComponent.meeting = meeting;
	}
}

Use the Add participant API to fetch the authToken.

Initialize and display the meeting

Create a RealtimeKitUI instance with your auth token, then call startMeeting(completion:) to get a view controller. Present it to display the full meeting UI.

Use the Add participant API to fetch the authToken.

import RealtimeKit
import RealtimeKitUI

let rtkUI = RealtimeKitUI(
    meetingInfo: RtkMeetingInfo(
        authToken: "<auth-token>",
        enableAudio: true,
        enableVideo: true
    )
)

let controller = rtkUI.startMeeting {
    // Called when the meeting ends or the user leaves
    self.dismiss(animated: true)
}
controller.modalPresentationStyle = .fullScreen
present(controller, animated: true)

Initialize and display the meeting

Create an RtkMeetingInfo with your auth token, wrap it in RealtimeKitUIInfo, build the UI Kit, and call startMeeting().

Use the Add participant API to fetch the authToken.

import com.cloudflare.realtimekit.models.RtkMeetingInfo
import com.cloudflare.realtimekit.ui.RealtimeKitUIBuilder
import com.cloudflare.realtimekit.ui.RealtimeKitUIInfo

val meetingInfo = RtkMeetingInfo(authToken = "<auth-token>")
val uiKitInfo = RealtimeKitUIInfo(
    activity = this,
    rtkMeetingInfo = meetingInfo,
)
val rtkUIKit = RealtimeKitUIBuilder.build(uiKitInfo)
rtkUIKit.startMeeting()

Initialize and display the meeting

Create an RtkMeetingInfo with your auth token, wrap it in RealtimeKitUIInfo, and build the UI Kit. The returned RealtimeKitUI object is a Flutter widget place it directly in your widget tree.

Use the Add participant API to fetch the authToken.

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

final meetingInfo = RtkMeetingInfo(authToken: '<auth-token>');
final uiKitInfo = RealtimeKitUIInfo(meetingInfo);
final rtkUI = RealtimeKitUIBuilder.build(uiKitInfo: uiKitInfo);

// Place rtkUI in your widget tree
Navigator.push(
  context,
  MaterialPageRoute(builder: (_) => rtkUI),
);

Call RealtimeKitUIBuilder.dispose() when you no longer need the meeting UI.

Initialize the SDK

Use the useRealtimeKitClient hook from the core React Native package to create a meeting instance: Use the Add participant API to fetch the authToken.

import {
	useRealtimeKitClient,
	RealtimeKitProvider,
} from "@cloudflare/realtimekit-react-native";
import {
	RtkMeeting,
	RtkUIProvider,
} from "@cloudflare/realtimekit-react-native-ui";
import React, { useEffect } from "react";
import { Text } from "react-native";

Display the meeting

Wrap your app in RtkUIProvider, initialize the client, and render RtkMeeting:

function App() {
  return (
    <RtkUIProvider>
      <Meeting authToken="<auth-token>" />
    </RtkUIProvider>
  );
}

function Meeting({ authToken }: { authToken: string }) {
  const [meet, initMeeting] = useRealtimeKitClient();

  useEffect(() => {
    initMeeting({
      authToken,
      defaults: { audio: true, video: true },
    });
  }, [authToken]);

  if (!meet) return <Text>Loading...</Text>;

  return (
    <RealtimeKitProvider value={meet}>
      <RtkMeeting meeting={meet} showSetupScreen={true} />
    </RealtimeKitProvider>
  );
}

Next steps

You have integrated RealtimeKit with the default meeting UI. Participants can now see and hear each other in sessions.

Build a custom meeting experience

While the default UI provides a complete meeting experience, you may want to build a custom interface using individual UI Kit components. This approach gives you full control over the layout, design, and user experience.

To build your own custom meeting UI, follow these guides in order:

UI Kit Components Library - Browse available components and their visual representations
UI Kit Meeting Lifecycle - Lifecycle of a meeting and how components communicate and synchronize with each other
Session Lifecycle - Understand different peer states and transitions
Meeting Object Explained - Access meeting data and participant information using the Core SDK
Build Your Own UI - Put everything together to create a custom meeting interface