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[[V2TIMManager sharedInstance] getGroupsInfo:@[@"groupA"] succ:^(NSArray<V2TIMGroupInfoResult *> *groupResultList) {
    // Obtained the group profile successfully
} fail:^(int code, NSString *desc) {
    // Failed to obtain the group profile
}];
V2TIMGroupInfo *info = [[V2TIMGroupInfo alloc] init];
info.groupID = @"Group ID of the group to be modified";
info.faceURL = @"http://xxxx";
[[V2TIMManager sharedInstance] setGroupInfo:info succ:^{
    // Modified the group profile successfully
} fail:^(int code, NSString *desc) {
    // Failed to modify the group profile
}];

// Get the group profile
V2TimValueCallback<List<V2TimGroupInfoResult>> groupinfos = await groupManager.getGroupsInfo(groupIDList: ['groupid1']);
// Modify the group profile
groupManager.setGroupInfo(info: V2TimGroupInfo.fromJson({
    "groupAddOpt":GroupAddOptTypeEnum.V2TIM_GROUP_ADD_AUTH
    // ...Other profiles
  }));
// Callback
TencentImSDKPlugin.v2TIMManager.addGroupListener(listener: V2TimGroupListener(onGroupInfoChanged: ((groupID, changeInfos) {
    // The group information was changed.
  })));

// Get the group profile
let promise = tim.getGroupProfile({ groupID: 'group1', groupCustomFieldFilter: ['key1','key2'] });
promise.then(function(imResponse) {
  console.log(imResponse.data.group);
}).catch(function(imError){
  console.warn('getGroupProfile error:', imError); // Error information
});
// Modify the group profile
let promise = tim.updateGroupProfile({
  groupID: 'group1',
  name: 'new name', // Modify the group name
  introduction: 'this is introduction.', // Modify the group introduction
  // Starting from v2.6.0, group members can receive group messages about group custom field modifications and obtain related content. For more information, see Message.payload.newGroupProfile.groupCustomField.
  groupCustomField: [{ key: 'group_level', value: 'high'}] // Modify the group custom field
});
promise.then(function(imResponse) {
  console.log(imResponse.data.group) // Detailed group profile after modification
}).catch(function(imError){
  console.warn('updateGroupProfile error:', imError); // Error information
});
// Starting from v2.6.2, the SDK supports muting and unmuting all. Currently, when all users are muted in a group, group notifications cannot be delivered.
let promise = tim.updateGroupProfile({
  groupID: 'group1',
  muteAllMembers: true, // `true`: mute all; `false`: unmute all
});
promise.then(function(imResponse) {
  console.log(imResponse.data.group) // Detailed group profile after modification
}).catch(function(imError){
  console.warn('updateGroupProfile error:', imError); // Error information
});

// Create a text message
V2TIMMessage *message = [[V2TIMManager sharedInstance] createTextMessage:@"content"];
// Send the message
[V2TIMManager.sharedInstance sendMessage:message
                                receiver:@"userID"
                                 groupID:nil
                                priority:V2TIM_PRIORITY_NORMAL
                          onlineUserOnly:NO
                         offlinePushInfo:nil
                                progress:nil
                                succ:^{
    // The text message sent successfully
}
                                fail:^(int code, NSString *desc) {
    // Failed to send the text message
}];

// Create a text message
V2TimValueCallback<V2TimMsgCreateInfoResult> createTextAtMessageRes = await TencentImSDKPlugin.v2TIMManager.getMessageManager().createTextAtMessage(
    text: "test",
    atUserList: [],
  );
 if(createTextAtMessageRes.code == 0){
    String id =  createTextAtMessageRes.data.id;

       // Send the text message
    V2TimValueCallback<V2TimMessage> sendMessageRes = await TencentImSDKPlugin.v2TIMManager.getMessageManager().sendMessage(id: id, receiver: "", groupID: "groupID");
    if(sendMessageRes.code == 0){
      // The message sent successfully
    }
  }

// Send the text message
// 1. Create a message instance. The returned instance can be displayed on the screen.
let message = tim.createTextMessage({
  to: 'user1',
  conversationType: TIM.TYPES.CONV_C2C,
  // Message priority, which applies to group chats and is supported by v2.4.2 or later. If messages in a group exceed the frequency limit, the backend will deliver high-priority messages first. For more information, see https://www.tencentcloud.com/document/product/269/3663?from_cn_redirect=1#.E6.B6.88.E6.81.AF.E4.BC.98.E5.85.88.E7.BA.A7.E4.B8.8E.E9.A2.91.E7.8E.87.E6.8E.A7.E5.88.B6.
  // Enumerated values supported: TIM.TYPES.MSG_PRIORITY_HIGH, TIM.TYPES.MSG_PRIORITY_NORMAL (default), TIM.TYPES.MSG_PRIORITY_LOW, TIM.TYPES.MSG_PRIORITY_LOWEST
  // priority: TIM.TYPES.MSG_PRIORITY_NORMAL,
  payload: {
    text: 'Hello world!'
  },
  // The read receipt feature is supported for one-to-one messages by v2.20.0 or later. To use it, purchase the Premium edition package and set `needReadReceipt` to `true` when creating a message.
  needReadReceipt: true
  // Message custom data (saved in the cloud, will be sent to the peer end, and can still be pulled after the app is uninstalled and reinstalled; supported from v2.10.2)
  // cloudCustomData: 'your cloud custom data'
});
// 2. Send the message.
let promise = tim.sendMessage(message);
promise.then(function(imResponse) {
  // The message sent successfully
  console.log(imResponse);
}).catch(function(imError){
  // The message failed to be sent
  console.warn('sendMessage error:', imError);
});