After creating a new channel by sending message, it doesn't show up after subscribing to it immediately.

[rahulrmishra]

I messaged "Hey" to a channel id - "AB" which created the channel, and I subscribed to it immediately, but the message doesn't show up. Any workaround for this?

[are]

Hello! Can you share any example code?

[rahulrmishra]

Hi, I have used bloc pattern for the code.

What is happening is that ->

1. I have a set of channels - {2c9a3aa4-0017-49a5-8f07-6c374*******, 10000****-10000****}
2. I listen to their subscription in the constructor of my bloc

ChatBloc({
@required this.pubnub,
@required this.directChanneId,
@required this.subscription,
}) : super(ChatMessagesInitialState()) {
subscription.messages.listen((message) {
// CODE TO HANDLE THE MESSAGES
});
}

At this point everything is fine.

3. When I add a new channel,
   {2c9a3aa4--49a5--6c374*******, 10000****-10000****, 1000****-100****}

The listener doesn't listen to the messages.
Instead whenever I add a new channel, I again have to set the listener again for it to work.

subscription.messages.listen((message) {
// CODE TO HANDLE THE MESSAGES
});

I'm not sure if this is how it should work?

[are]

When you add a new channel, are you creating a new subscription? Or only adding one to the set?

[rahulrmishra]

Only adding one to the set

[are]

Because Subscription objects are immutable, you cannot modify channels after its created. Each time you want to change the subscription, you should recreate it instead:

1. Once you want to add a new channel, first you need to dispose the existing subscription by calling await subscription.cancel();.
2. Create new subscription with modified channels.

[rahulrmishra]

Okay, thanks. I think it would be helpful if that was also specified in the docs.