[BUG]

[aminetoktokmessai]

Describe the bug I am using the flutter uikit and I have an exception that occurs when the second user (with audience Role) joins a channel, where the part of the screen supposed to display the user's own camera displays" Remote uid can not be null or 0 Failed assertion: line 74 pos 16: 'canvas.uid != null && canvas.uid != 0'" specifically on the video_view_controller.dart

To Reproduce My VideoCallPage Code:

import 'package:agora_rtc_engine/agora_rtc_engine.dart'; import 'package:agora_uikit/agora_uikit.dart'; import 'package:flutter/material.dart'; import 'package:naffsi/globals.dart' as globals; import 'package:http/http.dart' as http; import 'dart:convert';

const appId = ""; String serverUrl = "https://agora-token-service-production-example.railway.app/"; int uid = 0; int tokenRole = 1; // use 1 for Host/Broadcaster, 2 for Subscriber/Audience int tokenExpireTime = 450; // Expire time in Seconds. bool isTokenExpiring = false; // Set to true when the token is about to expire class VideoCallPage extends StatefulWidget { const VideoCallPage({Key? key,}) : super(key: key); @override State createState() => _VideoCallPageState(); }

class _VideoCallPageState extends State { late String channelName; late ClientRoleType role; late AgoraClient client;

@override void initState() { super.initState(); initAgora(); }

void initAgora() async { client = AgoraClient( agoraEventHandlers: AgoraRtcEventHandlers( onTokenPrivilegeWillExpire: (connection, token) => fetchToken(uid, channelName, tokenRole), ), agoraConnectionData: AgoraConnectionData( appId: appId, channelName: "whatev", tokenUrl: serverUrl, uid: uid, ), agoraChannelData: AgoraChannelData( clientRoleType: globals.isPatient ? ClientRoleType.clientRoleAudience : ClientRoleType.clientRoleBroadcaster, )); await client.initialize(); }

Future fetchToken(int uid, String channelName, int tokenRole) async { // Prepare the Url String url = '$serverUrl/rtc/$channelName/${tokenRole.toString()}/uid/${uid.toString()}?expiry=${tokenExpireTime.toString()}';

// Send the request
final response = await http.get(Uri.parse(url));

if (response.statusCode == 200) {
  // If the server returns an OK response, then parse the JSON.
  Map<String, dynamic> json = jsonDecode(response.body);
  String newToken = json['rtcToken'];
  debugPrint('Token Received: $newToken');
  // Use the token to join a channel or renew an expiring token
  setToken(newToken);
} else {
  // If the server did not return an OK response,
  // then throw an exception.
  throw Exception(
      'Failed to fetch a token. Make sure that your server URL is valid');
}

}

void setToken(String newToken) async { String token = newToken;

if (isTokenExpiring) {
  // Renew the token
  client.engine.renewToken(token);
  isTokenExpiring = false;
  print("!!!!!!!!!!!!!Token renewed");
} else {
  // Join a channel.
  print("Token received, joining a channel...");
  await client.engine.joinChannel(
    token: token,
    channelId: channelName,
    options: ChannelMediaOptions(
        clientRoleType: (globals.isPatient)
            ? ClientRoleType.clientRoleAudience
            : ClientRoleType.clientRoleBroadcaster),
    uid: uid,
  );
}

}

@override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar( title: const Text('Agora UI Kit'), centerTitle: true, ), body: SafeArea( child: Stack( children: [ AgoraVideoViewer( client: client, layoutType: Layout.floating, enableHostControls: true, // Add this to enable host controls ), AgoraVideoButtons( client: client, ), ], ), ), ), ); } }

[maxxfrazer]

Looks like this is made in the wrong place, please open an issue under VideoUIKit-Flutter