Public Group Channels are not shown to Users who are not invited?

Sendbird Chat API/SDK Flutter
1

Hi I’m using Sendbird Sdk to implement chatting feature in our Flutter application.

I’m trying to create Public Group Channels using the following code:

GroupChannelParams params = GroupChannelParams();
    params.name = _nameController.text;
    params.customType = _selectedType;
    params.isPublic = _isPublic;
    if (_isPublic) {
      params.accessCode = _accessCodeController.text.isEmpty
          ? null
          : _accessCodeController.text;
      params.isDiscoverable = _isDiscoverable;
    }
    params.userIds = _userList;
    params.operatorUserIds = _operatorList;

and even if I set isPublic and isDiscoverable to both true, users who are not included in the userIds cannot retrieve the created channels. I used the following code for retrieving the public group channels:

PublicGroupChannelListQuery()
        ..includeEmptyChannel = true
        ..membershipFilter = PublicGroupChannelMembershipFilter.all
        ..order = PublicGroupChannelListOrder.chronological
        ..limit = ChannelListState.limit,

Help me please… Thank you!

2

I’m using @sendbird/chat v4.
I was facing a same issue like you. I’m not sure why but I found a solution anyway.
step1. created a group channel (isPublic: true, I didn’t change isDiscoverable option)
step2. when I’m not a member of that group channel, I could find that channel by createPublicGroupChannelListQuery.
step3. when I’m a member of that group channel, I could find that channel by createGroupChannelCollection.

I’m not sure what logic or process is but it works for me.
I hope it would work.