errorCode: -10002, due to Preform operation without login RTM service Agora RTM, Flutter

[pentakotamadhusudhan]

Error: publish failed, errorCode: -10002, due to Preform operation without login RTM service.

`import 'package:agora_rtm/agora_rtm.dart';
import 'package:flutter/material.dart';
import 'dart:convert';

void main() {
// Ensure Flutter bindings are initialized
WidgetsFlutterBinding.ensureInitialized();

runApp(const MyApp());
}

class MyApp extends StatelessWidget {
const MyApp({super.key});

@OverRide
Widget build(BuildContext context) {
return const MaterialApp(
debugShowCheckedModeBanner: false,
home: HomePage(),
);
}
}

class HomePage extends StatefulWidget {
const HomePage({super.key});

@OverRide
State createState() => _HomePageState();
}

class _HomePageState extends State {
final String userId = 'madhu';
final String appId = '143....................783f1ec7e857efd';
final String token ="007eJxTYOjYE1S/.........................ydLM3MTUIMkg0QIAJRsmDA==";
final String channelName = 'madhu_channel';

RtmClient? rtmClient;

@OverRide
void initState() {
super.initState();
createClient();
}

@OverRide
void dispose() {
rtmClient?.logout();
super.dispose();
}

Future createClient() async {
try {
// Create RTM client
final statusAndClient = await RTM(appId, userId);
final status = statusAndClient.$1;
final client = statusAndClient.$2;

  if (status.error == true) {
    print(
        '${status.operation} failed due to ${status.reason}, error code: ${status.errorCode}');
  } else {
    rtmClient = client;
    print('Initialize success!');
  }

  // Add event listeners
  rtmClient!.addListener(
    // Message event handler
    message: (event) {
      print(
          'Received a message from channel: ${event.channelName}, channel type: ${event.channelType}');
      print(
          'Message content: ${utf8.decode(event.message!)}, custom type: ${event.customType}');
    },
    // Link state event handler
    linkState: (event) {
      print(
          'Link state changed from ${event.previousState} to ${event.currentState}');
      print('Reason: ${event.reason}, due to operation ${event.operation}');
    },
  );

  // Login to RTM
  await login(rtmClient!, token);
  await sendMessage(rtmClient!, channelName);
} catch (e) {
  print('Initialization failed: $e');
}

}

Future login(RtmClient client, String token) async {
try {
// Login to RTM
final statusAndResponse = await client.login(token);
final status = statusAndResponse.$1;

  if (status.error == true) {
    print(
        '------------------------- ${status.operation} failed due to ${status.reason}, error code: ${status.errorCode}');
  } else {
    print('Login to RTM successful!');
  await joinChannel(rtmClient!, channelName);

  }
} catch (e) {
  print('Failed to login: $e');
}

}

Future sendMessage(RtmClient client, String channelName) async {
// Send a message every second for 10 seconds
for (var i = 0; i < 10; i++) {
try {
final statusAndResponse = await client.publish(
channelName,
'Message number: $i',
channelType: RtmChannelType.message,
customType: 'PlainText',
);
final status = statusAndResponse.$1;

    if (status.error == true) {
      print(
          '${status.operation} failed, errorCode: ${status.errorCode}, due to ${status.reason}');
    } else {
      print('${status.operation} success! Message number: $i');
    }
  } catch (e) {
    print('Failed to publish message: $e');
  }
  await Future.delayed(const Duration(seconds: 1));
}

}

Future joinChannel(RtmClient client, String channelName) async {
try {
// Subscribe to a channel
final statusAndResponse = await client.subscribe(channelName);
final status = statusAndResponse.$1;

  if (status.error == true) {
    print(
        '${status.operation} failed due to ${status.reason}, error code: ${status.errorCode}');
  } else {
    print('Subscribed to channel: $channelName successfully!');
  }
} catch (e) {
  print('Failed to subscribe to channel: $e');
}

}

@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
actions: [
IconButton(onPressed: ()async{
createClient();
}, icon: Icon(Icons.refresh))
],
),
body: Center(
child: Text("Welcome"),
),
);
}
}
`