tencent cloud

LiveCoreView
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Last updated: 2025-09-01 14:40:56
LiveCoreView
Last updated: 2025-09-01 14:40:56
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Component Overview

Core controls for live streaming (LiveCoreView) provide APIs for preview before broadcasting, starting video live streaming, stopping video live streaming, audience viewing the live streaming, stopping watching live, anchor connection between anchors and audience in the live streaming room, and cross-room connection with other anchors. You can use our core controls to quickly build the main process of video live streaming within half an hour. Then add other live streaming components or your own business UI view on top.

Environment Preparation

Android
iOS
Flutter
Android 5.0 (SDK API Level 21) or later.
Gradle 7.0 or higher.
Android 5.0 or higher mobile devices.
Xcode 15 or later.
iOS 13.0 or later.
CocoaPods environment setup, click to view.
Platform
Version
Flutter
Flutter 3.27.4 or later.
Dart 3.6.2 or later.
Android
Android Studio 3.5 or later.
Android 5.0 or later Android devices.
iOS
Xcode 15.0 or later.
Ensure your project has a deemed valid developer signature.

Step 1: Activating the Services

Please refer to Activating the Service (TUILiveKit) to claim the experience edition or enable the paid edition.

Step 2: Integration and Configuration

Android
iOS
Flutter
1. Under the app directory, find the build.gradle.kts (or build.gradle) file and add the following code in it to join the dependency of the LiveCoreView component:
build.gradle.kts
build.gradle
api("io.trtc.uikit:live-stream-core:latest.release")
api 'io.trtc.uikit:live-stream-core:latest.release'
2. Since we use reflection features in the SDK, you need to add some SDK classes to the non-obfuscation list. Therefore, add the following code in the proguard-rules.pro file:
-keep class com.tencent.** { *; }
-keep class com.trtc.uikit.livekit.livestreamcore.** { *; }
-keep class com.google.gson.** { *;}
3. In the app directory, find the AndroidManifest.xml file, add tools:replace="android:allowBackup" and android:allowBackup="false" in the application node, override the settings within the component, and use your own settings.
  // app/src/main/AndroidManifest.xml
  
  <application
    ...
  
    // add the following configuration to overwrite the configuration in the dependent sdk
    android:allowBackup="false"
    tools:replace="android:allowBackup">=
Use CocoaPods to import components. If you encounter problems, please first refer to Environment Preparation. The steps to import components are as follows:
1. Add pod 'LiveStreamCore' dependency in your Podfile file.
Swift
target 'xxxx' do
  ...
  ...
  pod 'LiveStreamCore'
end
If you do not have a Podfile file, first cd to the xxxx.xcodeproj directory in the terminal, then create it through the following command:
pod init
2. In the terminal, first cd to the Podfile directory, then execute the following commands to install components.
pod install
If you cannot install the latest version of SeatGridView, first delete Podfile.lock and Pods. Then perform the following command to update the local CocoaPods repository list.
pod repo update
Then execute the following commands to update the Pod version of the component library.
pod update
3. First compile and run it. If you encounter problems, please refer to common issues. If the issue remains unresolved, try running our Example project. You are welcome to provide feedback on any problems encountered during integration and use.
In the root directory of the project, run the following command to install the live_stream_core plug-in via the command line.
flutter pub add live_stream_core
For any issues encountered during integration and use, please provide feedback.

Step 3: Logging In

Android
iOS
Flutter
Add the following code in your project. It enables logging in to the TUI component by calling relevant APIs in TUICore. This step is critical. Only after successfully logged in can you use the features provided by LiveCoreView properly.
Kotlin
Java
TUIRoomEngine.login(applicationContext,
    1400000001,      // replace with the SDKAppID obtained in step 1
    "denny",         // replace with your UserID
    "xxxxxxxxxxx",   // you can count a UserSig in the console and fill it in this location
    object : TUIRoomDefine.ActionCallback() {
        override fun onSuccess() {
            Log.i(TAG, "login success")
        }

        override fun onError(errorCode: Int, errorMessage: String) {
            Log.e(TAG, "login failed, errorCode: $errorCode msg:$errorMessage")
        }
    })
TUIRoomEngine.login(context, 
    1400000001,     // replace with the SDKAppID obtained in step 1
    "denny",        // replace with your UserID
    "xxxxxxxxxxx",  // you can count a UserSig in the console and fill it in this location
        new TUIRoomDefine.ActionCallback() {
            @Override
            public void onSuccess() {
                Log.i(TAG, "login success");
            }

            @Override
            public void onError(TUICommonDefine.Error error, String message) {
                Log.e(TAG, "login failed, errorCode: " + errorCode + " msg:" + errorMessage);
            }
        });
Add the following code in your project. It enables logging in to the TUI component by calling the relevant APIs in RTCRoomEngine. This procedure is critical. Only after logging in successfully can you use the features provided by SeatGridView properly.
swift
//
//  AppDelegate.swift
//

import RTCRoomEngine

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
  
    TUIRoomEngine.login(sdkAppId: 1400000001,       // replace with SDKAppID obtained in step 1
                          userId: "denny",          // replace with your UserID
                         userSig: "xxxxxxxxxxx") {  // you can count a UserSig in the console and fill it in this location
      print("login success")
    } onError: { code, message in
      print("login failed, code: \\(code), error: \\(message ?? "nil")")
    }
    
    return true
}
Add the following code in your project. It enables logging in to the TUI component by calling the login-related APIs in RTCRoomEngine. This step is critical. Only after successfully logged in can you use the features provided by LiveStreamCore properly.
final result = await TUIRoomEngine.login(
                    'Replace with your activated SDKAppID',
                    'Replace with your userId',
                    'Replace with your userSig');
Parameter Description
Here are the key parameters needed in the login function:
Parameters
Type
Description
SDKAppID
int
Obtain from Step 3 in Step 1.
UserID
String
The current user ID, string type, only allows letters (a-z and A-Z), digits (0-9), hyphens, and underscores.
userSig
String
Use the SecretKey obtained from Step 3 of Step 1 to encrypt information such as SDKAppID and UserID. This process generates a UserSig, which is an authentication token used by Tencent Cloud to verify whether the current user can use the TRTC service. You can generate a temporary UserSig using the auxiliary tool in the console. For more information, see how to calculate and use UserSig.
Note:
Development environment: If you are in the local development and debugging stage, you can adopt the local GenerateTestUserSig.genTestSig function to generate userSig. In this method, the SDKSecretKey is very easy to decompile and reverse. Once your key is leaked, an attacker can steal your Tencent Cloud traffic.
Production environment: If your project is ready to go live, implement server-side generation of UserSig.

Step 4: Implement Live Streaming Functionality Using Core Controls

Anchor starts live streaming and audience watches live for effect preview.
Anchor starts live
audience viewing the live stream








Different Layout Styles

dynamic grid layout
floating small window layout
fixed grid layout
fixed small window layout





Anchor Preview and Go Live

Create core controls:
Android
iOS
Flutter
You can load our core control in your streaming Activity through Java code or XML method. The code method example is as follows (xml method is similar):
kotlin
java
val livecoreView = LiveCoreView(this)
LiveCoreView liveCoreView = new LiveCoreView(this);
swift
import LiveStreamCore

let liveCoreView = LiveCoreView()
You need to create a controller LiveCoreController first, then assign value to the live streaming core component LiveCoreWidget.
LiveCoreController is responsible for providing API, LiveCoreWidget is used to show the mic seat UI. You can add LiveCoreWidget anywhere you need to display the mic seat UI.
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

final controller = LiveCoreController();
LiveCoreWidget(controller: controller);
Enable live preview: local camera preview, has not truly launched the live streaming room.
Android
iOS
Flutter
kotlin
java
livecoreView.startCamera(true, null)
liveCoreView.startCamera(true, null);
swift
import LiveStreamCore

liveCoreView.startCamera(useFrontCamera: true) {
} onError: { code, message in 
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

final startCameraResult = await controller.startCamera(true);
Anchor open live room: open a live streaming room and push local camera capture and microphone data to the room.
Android
iOS
Flutter
kotlin
java
val liveInfo = TUILiveListManager.LiveInfo()
liveInfo.roomId = "123456"
/** 
    Select layout: If you want to select another layout to go live, set liveInfo.seatLayoutTemplateId = 600
      600: dynamic grid layout (default)
      601: floating small window layout
      800: fixed grid layout
      801: fixed small window layout
*/
liveInfo.seatLayoutTemplateId = 600
livecoreView.startLiveStream(liveInfo, null)

livecoreView.startMicrophone(null)
TUILiveListManager.LiveInfo liveInfo = new TUILiveListManager.LiveInfo();
liveInfo.roomId = "roomId_123456";
/** 
    Select layout: If you want to select another layout to go live, set liveInfo.seatLayoutTemplateId = 600
      600: dynamic grid layout (default)
      601: floating small window layout
      800: fixed grid layout
      801: fixed small window layout
*/
liveInfo.seatLayoutTemplateId = 600
livecoreView.startLiveStream(liveInfo, null);

livecoreView.startMicrophone(null);
swift
import LiveStreamCore
import RTCRoomEngine

let liveInfo = TUILiveInfo()
liveInfo.roomId = "123456"
liveInfo.seatMode = .applyToTake
/** 
    Select layout: If you want to select another layout to go live, set liveInfo.seatLayoutTemplateId = 600
      600: dynamic grid layout (default)
      601: floating small window layout
      800: fixed grid layout
      801: fixed small window layout
*/
liveInfo.seatLayoutTemplateId = 600

liveCoreView.startLiveStream(liveInfo: liveInfo) { roomInfo in 
} onError: { code, message in 
}

liveCoreView.startMicrophone {
} onError: { code, message in 
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

final roomInfo = TUIRoomInfo(roomId: '123456');
roomInfo.name = 'replace with your roomName'
roomInfo.isSeatEnabled = true;
roomInfo.roomType = TUIRoomType.livingRoom;
roomInfo.seatMode = TUISeatMode.applyToTake;

final startLiveStreamResult = await controller.startLiveStream(roomInfo);

final startMicrophoneResult = await controller.startMicrophone();

Audience Viewing

Create core controls:
Android
iOS
Flutter
You can load our core control in your streaming Activity through Java code or XML method. The code method example is as follows (xml method is similar):
kotlin
java
val livecoreView = LiveCoreView(this)
LiveCoreView liveCoreView = new LiveCoreView(this);
swift
import LiveStreamCore

let liveCoreView = LiveCoreView()
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

final controller = LiveCoreController();
LiveCoreWidget(controller: controller);
Audience Joins Live Room: Audience enters the live room and pulls the live stream host's video stream and audio stream.
Android
iOS
Flutter
kotlin
java
livecoreView.joinLiveStream("roomId_123456", null)
livecoreView.joinLiveStream("roomId_123456", null);
swift
import LiveStreamCore

liveCoreView.joinLiveStream(roomId: "roomId_123456") { roomInfo in 
} onError: { code, message in 
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

var result = await controller.joinLiveStream('replace with your roomId');

Audience Co-Broadcasting

Audience Co-Broadcasting Effect Preview:
Single-Person Co-Broadcasting
Multi-Person Co-Anchoring






You can call the following API function to implement the audience mic connection feature. For example, Audience B requests to connect with Anchor A as follows.
Note:
The following is the proactive invocation method provided by LiveCoreView.
All callback methods refer to those in the ConnectionObserver object set by LiveCoreView.

Audience Sending Mic Connection Request

Audience B sends a microphone connection request to Anchor A.
Android
iOS
Flutter
Kotlin
Java
val userId = "anchorUserId";   // Change to room owner's UserId, defaults to room owner UserId when input empty string
val timeout = 60; 
liveCoreView.requestIntraRoomConnection(userId, 10, null)
String userId = "anchorUserId";  // Change to room owner's UserId, defaults to room owner UserId when input empty string
int timeout = 60;
liveCoreView.requestIntraRoomConnection(userId, timeout, true, null);
Swift
OC
let timeout = 60
let userId = "anchorUserId"  // Change to room owner's UserId, defaults to room owner UserId when input empty string
liveCoreView.requestIntraRoomConnection(userId: userId, timeOut: timeOut, openCamera: true) {
} onError: { code, message in 
}
NSInteger timeout = 60;
NSString userId = "anchorUserId"  // Change to room owner's UserId, defaults to room owner UserId when input empty string
[liveCoreView requestIntraRoomConnection:""                                    
                                 timeOut:timeout                                    
                               onSuccess:^(void) { 
                               } onError:^(NSInteger code, NSString * _Nonnull message) { 
                               }];
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

final timeout = 60;
final userId = 'anchorUserId';  // Change to room owner's UserId, defaults to room owner UserId when input empty string
final openCamera = true;

final result = await controller.requestIntraRoomConnection(userId,timeout,openCamera);

Anchor Received Mic Connection Request

Anchor A will receive Audience B's mic connection request in the onUserConnectionRequest callback method.
Android
iOS
Flutter
Kotlin
Java
override fun onUserConnectionRequest(inviterUser: UserInfo) {
   Log.i(TAG, "Received audience connection request: ${inviterUser.userId}")
}
@Override
public void onUserConnectionRequest(LiveStreamDefine.LiveUser inviterUser) {
    Log.i(TAG, "Received audience connection request: " + inviterUser.userId);
}
Swift
OC
func onUserConnectionRequest(inviterUser: TUIUserInfo) {
    print("Received audience connection request: \\(inviterUser.userId)")
}
- (void)onUserConnectionRequest:(TUIUserInfo *)inviterUser {
    NSLog(@"Received audience connection request: %@", hostUser.userId);
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends ConnectionObserver {  
    ExampleObserver() {   
       super.onUserConnectionRequest = (inviterUser) { 
         debugPrint('Received audience connection request: ${inviterUser.userId}');
       };    
    }
}

Anchor Responding to Mic Connection Request

Anchor A can call respondIntraRoomConnection to respond to Audience B whether to agree to mic connection.
Android
iOS
Flutter
Kotlin
Java
// Host agrees to connect mic
liveCoreView.respondIntraRoomConnection(audienceBUserId, true, null)
// Host agrees to connect mic
liveCoreView.respondIntraRoomConnection(userId, true, null);

// Host rejects mic connection
liveCoreView.respondIntraRoomConnection(userId, false, null);
Swift
OC
// Host agrees to connect mic
liveCoreView.respondIntraRoomConnection(userId: audienceBUserId, isAccepted: true) {
} onError: { code, message in 
}
// Host agrees to connect mic
[liveCoreView respondIntraRoomConnection:audienceBUserId                                   
                              isAccepted:YES                                   
                               onSuccess:^(void) { 
                               } onError:^(NSInteger code, NSString * _Nonnull message) { 
                               }];
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

// Host agrees to connect mic
final result = await controller.respondIntraRoomConnection('audienceBUserId',true);

Audience Received Broadcaster Response Callback

After Anchor A grants Audience B's mic connection request, Audience B will receive Anchor A's agreement to mic connection through the onUserConnectionAccepted callback.
Android
iOS
Flutter
Kotlin
Java
override fun onUserConnectionAccepted(inviterUser: UserInfo) {
   Log.i(TAG, "Audience agreed to connection: ${inviterUser.userId}")
}
@Override
public void onUserConnectionAccepted(LiveStreamDefine.LiveUser liveUser) {
    Log.i(TAG, "Audience agreed to connection: " + liveUser.userId);
}

@Override
public void onUserConnectionRejected(LiveStreamDefine.LiveUser liveUser) {
    Log.i(TAG, "Audience rejected connection: " + liveUser.userId);
}
Swift
OC
func onUserConnectionAccepted(userId: String) {
    print("Audience agreed to connection: \\(userId)")
}
- (void)onUserConnectionAccepted:(NSString *)userId {
    NSLog(@"Audience agreed to connection: %@", userId);
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends ConnectionObserver {  
    ExampleObserver() {   
       super.onUserConnectionAccepted = (user) { 
         debugPrint('Broadcaster agrees to connecting line: ${user.userId}');
       };    
    }
}

Callback for Changes in the List of Mic-Connected Users

After Anchor A grants Audience B's mic connection request, LiveCoreView will send the mic-connected user change to both Anchor A and Audience B at the same time.
Android
iOS
Flutter
Kotlin
Java
override fun onConnectedUsersUpdated(inviterUser: UserInfo) {
   Log.i(TAG, "Changes in the list of mic-connected users")
}
@Override
public void onConnectedUsersUpdated(List<UserInfo> userList, List<UserInfo> joinList, List<UserInfo> leaveList) {
    Log.i(TAG, "Changes in the list of mic-connected users")
}
Swift
OC
func onConnectedUsersUpdated(userList: [TUIUserInfo], joinList: [TUIUserInfo], leaveList: [TUIUserInfo]) {
   print("Changes in the list of mic-connected users") 
}
- (void)onConnectedUsersUpdated:(NSArray<TUIUserInfo *> *)userList
                       joinList:(NSArray<TUIUserInfo *> *)joinList
                       leaveList:(NSArray<TUIUserInfo *> *)leaveList {    
                           NSLog(@"Changes in the list of mic-connected users");        // Here you can handle userList, joinList and leaveList if necessary
                       }
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends ConnectionObserver {  
    ExampleObserver() {   
       super.OnConnectedUsersUpdated = (userList, joinList, leaveList) { 
         debugPrint('Changes in the list of mic-connected users');
       };    
    }
}
Disconnect the mic during the process by calling the following API.

Audience Co-Broadcasting Upon Success, Anchor Hangs Up Mic Connection

After Audience B and Anchor A successfully connect via microphone, Anchor A disconnects from Audience B.
Android
iOS
Flutter
Kotlin
Java
val userId = "audienceBUserId"
liveCoreView.disconnectUser(userId, null)
String userId = "audienceUserId";
liveCoreView.disconnectUser(userId, null);
Swift
OC
let userId = "audienceBUserId"
liveCoreView.disconnectUser(userId: userId) {
} onError: { code, message in 
}
NSString *userId = @"audienceBUserId";
[liveCoreView disconnectUser:userId
                   onSuccess:^{                    
                   } onError:^(NSInteger code, NSString * _Nonnull message) { 
                   }];
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

final userId = 'audienceBUserId';
final result = await controller.disconnectUser(userId);

Audience Received Anchor Disconnect Callback

Anchor A disconnects from Audience B's mic connection request, and Audience B receives the onUserConnectionTerminated callback.
Android
iOS
Flutter
Kotlin
Java
override fun onUserConnectionTerminated(inviterUser: UserInfo) {
   Log.i(TAG, "Anchor closed connecting line")
}
@Override
public void onUserConnectionTerminated() {
    Log.i(TAG, "Anchor closed connecting line")
}
Swift
OC
func onUserConnectionTerminated() {
    print("Anchor closed connecting line")
}
- (void)onUserConnectionTerminated {
    NSLog(@"Anchor closed connecting line");
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends ConnectionObserver {  
    ExampleObserver() {   
       super.onUserConnectionTerminated = (user) { 
         debugPrint('Anchor closed connecting line') ;
       };    
    }
}

Audience Co-Broadcasting Upon Success, Audience Ends Mic Connection

After Audience B and Anchor A successfully connect for co-broadcasting, Audience B can call terminateIntraRoomConnection to proactively disconnect.
Android
iOS
Flutter
Kotlin
Java
liveCoreView.terminateIntraRoomConnection()
liveCoreView.terminateIntraRoomConnection();
Swift
OC
liveCoreView.terminateIntraRoomConnection()
[liveCoreView terminateIntraRoomConnection]
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

final result = await controller.terminateIntraRoomConnection();

Anchor Received Audience Disconnect Callback

When Audience B proactively disconnects, Anchor receives the onUserConnectionExited callback.
Android
iOS
Flutter
Kotlin
Java
override fun onUserConnectionExited(inviterUser: LiveStreamDefine.LiveUser) {
   Log.i(TAG, "Audience exit connection")
}
@Override
public void onUserConnectionExited(UserInfo liveUser) {
    Log.i(TAG, "Audience exit connection: ${liveUser.userId}");
}
Swift
OC
func onUserConnectionExited(userInfo: TUIUserInfo) {
    print("Audience exit connection")
}
- (void)onUserConnectionExited:(TUIUserInfo *)userInfo {
    NSLog(@"Audience exited connection");
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends ConnectionObserver {  
    ExampleObserver() {   
       super.onUserConnectionExited = (user) { 
         debugPrint('Audience exited connection');
       };    
    }
}

Anchor Connection

Anchor connection effect preview:
Dual-Anchor Connection
Multi-Anchor Connection






You can call the following API to complete the Anchor connection feature. Here, Anchor A connects with Anchor B as follows.
Note:
The following is the proactive invocation method provided by LiveCoreView.
All callback methods refer to those in the ConnectionObserver object set by LiveCoreView.

Anchor a Initiating Connection

Anchor A initiates a connecting line by calling requestCrossRoomConnection, inputting the room id of Anchor B in the parameter roomId.
Android
iOS
Flutter
Kotlin
java
val roomId = "anchorBRoomId"
mLiveViewList.requestCrossRoomConnection(roomId, 10, null)
String roomId = "anchorBRoomId";
mLiveViewList.requestCrossRoomConnection(roomId, 10, null);
Swift
OC
let roomId = "anchorRoomId"

liveCoreView.requestCrossRoomConnection(roomId: roomId, timeOut: 60) { 
} onError: { code, message in 
}
NSString *roomId = @"anchorRoomId";        

[liveCoreView requestCrossRoomConnection:roomId                                     
                                 timeOut:60                                    
                               onSuccess:^(void) { 
                               } onError:^(NSInteger code, NSString * _Nonnull message) { 
                               }];
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

final roomId = 'anchorBRoomId';
final result = await controller.requestCrossRoomConnection(roomId);
Anchor A can receive the callback acceptance via onCrossRoomConnectionAccepted.

Anchor B Received Connection Request

Anchor B receives the connection request callback via onCrossRoomConnectionRequest.
Android
iOS
Flutter
Kotlin
java
override fun onCrossRoomConnectionRequest(inviterUser: UserInfo) {
   Log.i(TAG, "Received Anchor A room request: ${inviterUser.userId}")
}
@Override
public void onCrossRoomConnectionRequest(LiveStreamDefine.RoomInfo roomInfo) {
    Log.i(TAG, "Received Anchor A room request: " + roomInfo.roomId);
}
Swift
OC
func onCrossRoomConnectionRequest(hostUser: TUIConnectionUser) {
    print("Received Anchor A room request: \\(hostUser.userId)")
}
- (void)onCrossRoomConnectionRequest:(TUIConnectionUser *)hostUser {
    NSLog(@"Received Anchor A connecting line room request: %@", hostUser.userId);
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends ConnectionObserver {  
    ExampleObserver() {   
       super.onCrossRoomConnectionRequest = (user) { 
         debugPrint('Received Anchor A connecting line room request: ${user.userId}');
       };    
    }
}
Anchor B responds to the connection request by calling respondToCrossRoomConnection.'}
Android
iOS
Flutter
Kotlin
java
liveCoreView.respondToCrossRoomConnection(roomId, true, null)
// Grant connection request
liveCoreView.respondToCrossRoomConnection(roomId, true, null);
Swift
OC
liveCoreView.respondToCrossRoomConnection(roomId: roomId, isAccepted: true) {
} onError: { code, message in 
}
[liveCoreView respondToCrossRoomConnection:roomId                                     
                                isAccepted:true                                    
                                 onSuccess:^(void) { 
                                 } onError:^(NSInteger code, NSString * _Nonnull message) { 
                                 }];
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

final roomId = 'anchorBRoomId';
final isAccpeted = true;
final result = await controller.respondToCrossRoomConnection(roomId, isAccpeted);
Anchor A, B and the audience in the room receive the onConnectedRoomsUpdated callback, notifying that the connection list has changed.
Android
iOS
Flutter
Kotlin
java
override fun onConnectedRoomsUpdated(inviterUser: UserInfo) {
   Log.i(TAG, "Anchor connection room list update")
}
@Override
public void onConnectedRoomsUpdated(List<LiveStreamDefine.RoomInfo> roomList) {
    Log.i(TAG, "Anchor connection room list update")
}
Swift
OC
func onConnectedRoomsUpdated(hostUserList: [TUIConnectionUser]) {
    print("Anchor connection room list update")
}
- (void)onConnectedRoomsUpdated:(NSArray<TUIConnectionUser *> *)hostUserList {
    NSLog(@"Anchor connection room list refresh");
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends ConnectionObserver {  
    ExampleObserver() {   
       super.onConnectedRoomsUpdated = (user) { 
         debugPrint('Anchor connection room list refresh') ;
       };    
    }
}

Exiting Connection Process

Anchor B calls terminateIntraRoomConnection to exit connection.
Android
iOS
Flutter
kotlin
java
public void disconnect(TUIRoomDefine.ActionCallback callback) {
    mTUILiveConnectionManager.disconnect(callback);
}
liveCoreView.terminateIntraRoomConnection()
Swift
OC
liveCoreView.terminateCrossRoomConnection()
[liveCoreView terminateCrossRoomConnection];
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

final result = await controller.terminateIntraRoomConnection();

Setting Connection Layout

Custom Layout Connection Effect Preview
Anchor Connection - Grid Layout
Anchor Connection - Floating Window Layout
Anchor Connection - Custom Layout













You can quickly set the layout between you and the connected host or mic-connecting audience in the following ways.
Android
iOS
Flutter
kotlin
java
// Set grid layout
mLiveStreamListView.setLayoutMode(LiveCoreViewDefine.LayoutMode.GRID_LAYOUT, "")

// Set floating window layout
mLiveStreamListView.setLayoutMode(LiveCoreViewDefine.LayoutMode.FLOAT_LAYOUT, "")

// Set custom layout
var layoutJson = ""
mLiveStreamListView.setLayoutMode(LiveCoreViewDefine.LayoutMode.FREE_LAYOUT, layoutJson)
// Set grid layout
mLiveStreamListView.setLayoutMode(LiveCoreViewDefine.LayoutMode.GRID_LAYOUT, "");

// Set floating window layout
mLiveStreamListView.setLayoutMode(LiveCoreViewDefine.LayoutMode.FLOAT_LAYOUT, "");

// Set custom layout
String layoutJson = "";
mLiveStreamListView.setLayoutMode(LiveCoreViewDefine.LayoutMode.FREE_LAYOUT, layoutJson);
swift
import LiveStreamCore

// Set grid layout
liveCoreView.setLayoutMode(layoutMode: .gridLayout)

// Set floating window layout
liveCoreView.setLayoutMode(layoutMode: .floatLayout)

// Set custom layout
let layoutJson = ""
liveCoreView.setLayoutMode(layoutMode: .freeLayout, layoutJson: layoutJson)
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';

// Set grid layout
controller.setLayoutMode(LayoutMode.gridLayout);

// Set floating window layout
controller.setLayoutMode(LayoutMode.floatLayout);

// Set custom layout
final layoutJson = '';
controller.setLayoutMode(LayoutMode.freeLayout, layoutJson);
Note:
Note: The custom layout layoutJson is a string in JSON format. For detailed content, view custom layout json.

Custom Layout JSON

The JSON structure of the custom layout is as follows:
{
	"1": {                                 // number of video views
		"backgroundColor": "#000000",      // Background color of the canvas, use hexadecimal format
		"viewInfoList": [{                 // layout information and background color of each video view
			"x": 0,                        // horizontal offset ratio to screen width, value ranges from 0 to 1
			"y": 0,                        // vertical offset ratio to screen width, value ranges from 0 to 1
			"width": 1,                    // width ratio of video view to screen width, value ranges from 0 to 1
			"height": -1,                  // height ratio of video view to screen width, value ranges from 0 to 1 or -1; -1 means the view height is identical to the screen height
			"zOrder": 0,                   // Z-order of video view, the larger the value, the view aligns top
			"backgroundColor": "#000000"   // Background color of video view in RGB hexadecimal format
		}]
	}
}

Anchor PK

LiveCoreView provides APIs related to Anchor PK. Since the UI effect varies for each play mode, LiveCoreView only provides APIs. You need to implement the UI effect yourself.
Anchor PK effect preview:
Dual-Anchor PK
Multi-Anchor PK






Note:
- The PK feature depends on the connection feature, so you need to trigger a PK request during an anchor connection.
The following proactive invocation APIs are provided by LiveCoreView.
All callback methods refer to those in the BattleObserver object set by LiveCoreView.
You can call the following API to complete the Anchor PK feature. Here, Anchor A battles with Anchor B as follows.

Anchor a Initiating PK

Anchor A initiates a PK by calling requestBattle.
Android
iOS
Flutter
Kotlin
java
val BATTLE_DURATION = 30
val battleConfig = BattleConfig()
battleConfig.duration = BATTLE_DURATION
battleConfig.needResponse = true
battleConfig.extensionInfo = ""

val list: MutableList<String> = ArrayList()
list.add("anchorBUserId")

val BATTLE_REQUEST_TIMEOUT = 10

liveCoreView.requestBattle(battleConfig, list, BATTLE_REQUEST_TIMEOUT,
    object : LiveCoreViewDefine.BattleRequestCallback {
        override fun onSuccess(battleId: String, requestedUserIdList: List<String>) {}
        override fun onError(error: TUICommonDefine.Error, message: String) {}
    })
final int BATTLE_DURATION          = 30;
TUILiveBattleManager.BattleConfig battleConfig = new TUILiveBattleManager.BattleConfig();
battleConfig.duration = BATTLE_DURATION;
battleConfig.needResponse = true;
battleConfig.extensionInfo = "";

List<String> list = new ArrayList<>();
list.add("anchorBUserId");

final int BATTLE_REQUEST_TIMEOUT   = 10;

liveCoreView.requestBattle(battleConfig, list, BATTLE_REQUEST_TIMEOUT,
        new LiveCoreViewDefine.BattleRequestCallback() {
            @Override
            public void onSuccess(String battleId, List<String> requestedUserIdList) {

            }


            @Override
            public void onError(TUICommonDefine.Error error, String message) {

            }
        });
Swift
let roomId = "anchorRoomId"
let config = TUIBattleConfig()
config.duration = battleDuration
config.needResponse = true
config.extensionInfo = ""

let userIdList: [String] = []
let timeout: TimeInterval = 10

liveCoreView.requestBattle(config: config, userIdList: userIdList, timeout: timeout) { 
[weak self] (battleId, battleUserList) in
} onError: { _, _ in
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

final roomId = 'anchorRoomId';
final config = TUIBattleConfig();
config.duration = 30;

final result = await controller.requestBattle(config, [roomId], 10);
Anchor A can receive the PK callback acceptance via onBattleRequestAccept.

Anchor B Received Battle Request

Anchor B receives the PK request callback via onBattleRequestReceived.
Android
iOS
Flutter
Kotlin
java
override fun onBattleRequestReceived(battleId: String, inviterUser: BattleUser, invitee: BattleUser) {
   Log.i(TAG, "Received Anchor A's battle request: $battleId")
}
@Override
public void onBattleRequestReceived(String battleId, BattleUser inviter, BattleUser invitee) {
    Log.i(TAG, "Received Anchor A's battle request: " + battleId);
}
Swift
extension ViewContrller: BattleObserver { //replace with your actual class name
    func onBattleRequestReceived(battleId: String, inviter: TUIBattleUser, invitee: TUIBattleUser) {
    }
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends BattleObserver {  
    ExampleObserver() {   
       super.onBattleRequestReceived = (battleId, inviter, invitee) { 
         debugPrint('Received Anchor A battle request');
       };    
    }
}
Anchor B responds to the battle request by calling respondToBattle.
Android
iOS
Flutter
Kotlin
java
// Grant battle request
val battleId = "battleId"
liveCoreView.respondToBattle(battleId, true, null)
// Grant battle request
String battleId = "battleId";
liveCoreView.respondToBattle(battleId, true, null);
Swift
liveCoreView.respondToBattle(battleId: manager.battleState.battleId, isAccepted: false, onSuccess: { [weak self] in
}, onError: { _, _ in
})
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Grant battle request
final battleId = '';
final result = await controller.respondToBattle(battleId, true);
Anchor A, B and the audience in the room received onBattleStarted and the start notification.
Android
iOS
Flutter
Kotlin
java
override fun onBattleStarted(battleInfo: BattleInfo) {
   Log.i(TAG, "PK start callback")
}
@Override
public void onBattleStarted(BattleInfo battleInfo) {
    Log.i(TAG, "Anchor connection room list update")
}
Swift
extension ViewContrller: BattleObserver { //replace with your actual class name
    func onBattleStarted(battleInfo: TUIBattleInfo)) {
    }
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

// Create a listener Observer instance
final controller = LiveCoreController();
final exampleObserver = ExampleObserver(); 

// add observer
controller.addObserver(exampleObserver);

class ExampleObserver extends BattleObserver {  
    ExampleObserver() {   
       super.onBattleStarted = (battleInfo) { 
         debugPrint('PK start callback');
       };    
    }
}

Exit PK Process

Natural end: When PK time ends, you will receive the onBattleEnded callback.
Active stop: Anchor B calls terminateBattle and will exit PK, while Anchor A receives onUserExitBattle.
Android
iOS
Flutter
kotlin
java
mLiveCoreView.terminateBattle(battleId, null)
mLiveCoreView.terminateBattle(battleId, null);
Swift
liveCoreView.terminateBattle(battleId: manager.battleState.battleId) {
} onError: { _, _ in
}
import 'package:live_stream_core/live_core_widget/live_core_widget.dart';
import 'package:rtc_room_engine/rtc_room_engine.dart';

final battleId = '';
final result = await controller.terminateBattle(battleId);


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