Create A Group

Create public, private, or password-protected groups and optionally add members during creation using the CometChat iOS SDK.

AI Integration Quick Reference

// Create a group
let group = Group(guid: "GUID", name: "Group Name", groupType: .public, password: nil)
CometChat.createGroup(group: group,
    onSuccess: { group in }, onError: { error in })

// Create group with members
let members = [GroupMember(UID: "UID", groupMemberScope: .participant)]
CometChat.createGroupWithMembers(group: group, members: members, banMembers: [],
    onSuccess: { response in }, onError: { error in })

Group types: .public | .password | .private Member scopes: .admin | .moderator | .participant

Create groups for multi-user conversations. You can create a group on its own with createGroup(), or create one and add members in a single call with createGroupWithMembers(). See the Group Class reference at the bottom for all available fields.

Create a Group

Use createGroup() to create a new group. Pass a Group object with the group details.

Group Type	Constant	Description
Public	.public	Any user can join
Password	.password	Users must provide the correct password
Private	.private	Users must be added by an admin/moderator

Swift

let guid = "cometchat-guid-11"
let groupName = "TestGroup1"
let password = "" // mandatory in case of password protected group type

let group = Group(guid: guid, name: groupName, groupType: .private, password: password)

CometChat.createGroup(group: group, onSuccess: { (group) in
    print("Group created successfully. " + group.stringValue())
}, onError: { (error) in
    print("Group creation failed with error:" + error!.errorDescription)
})

Objective C

NSString *guid = @"cometchat-guid-101";
NSString *name = @"TestGroup1";
NSString *password = nil; // mandatory in case of password protected group type

Group *group = [[Group alloc]initWithGuid:guid name:name groupType:groupTypePublic password:password];

[CometChat createGroupWithGroup:group onSuccess:^(Group * group) {
    NSLog(@"Group created successfully. %@", [group stringValue]);
} onError:^(CometChatException * error) {
    NSLog(@"Group creation failed with error: %@", [error errorDescription]);
}];

Parameter	Description
group	An instance of Group class

On success, returns a Group object with the created group’s details.

GUID can be alphanumeric with underscore and hyphen. Spaces, punctuation and other special characters are not allowed.

Add Members While Creating a Group

Use createGroupWithMembers() to create a group and add members in one operation.

Parameters:

• group — The Group object
• members — Array of GroupMember objects to add
• banMembers — Array of UIDs to ban (can be empty)

Create a GroupMember with: GroupMember(UID:groupMemberScope:)

Swift

let group = Group(guid: "cometchat-uid-group1", name: "Hello Group", groupType: .public, password: nil)

let members = [
    GroupMember(UID: "cometchat-uid-4", groupMemberScope: .participant)
]

let banMembers = ["cometchat-uid-2"]

CometChat.createGroupWithMembers(group: group, members: members, banMembers: banMembers, onSuccess: { response in
    print("Group created successfully", response)
}, onError: { (error) in
    print("Error: \(String(describing: error?.errorDescription))")
})

Returns an object with two keys:

• group — The created Group object
• members — Object with UIDs as keys and "success" or error message as values

Group Class

The Group object has the following fields. Fields marked “Yes” in the Editable column can be modified after creation using updateGroup().

Field	Editable	Information
guid	Needs to be specified at group creation. Cannot be edited later	A unique identifier for a group
name	Yes	Name of the group
type	No	Type of the group: Can be 1. Public 2. Password 3. Private
password	No	Password for the group in case the group is of type password.
icon	Yes	An URL to group icon
description	Yes	Description about the group
owner	Yes	UID of the owner of the group.
metadata	Yes	Additional data for the group as Dictionary
createdAt	No	The unix timestamp of the time the group was created
updatedAt	No	The unix timestamp of the time the group was last updated
hasJoined	No	A boolean to determine if the logged in user is a member of the group.
joinedAt	No	The unix timestamp of the time the logged in user joined the group.
scope	Yes	Scope of the logged in user. Can be: 1. Admin 2. Moderator 3. Participant
membersCount	No	The number of members in the groups
tags	Yes	A list of tags to identify specific groups.

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Next Steps

Join a Group

Join public, private, or password-protected groups

Add Members

Add users to an existing group

Retrieve Groups

Fetch and filter group lists

Groups Overview

Overview of all group management features