/ SDKs / Flutter

SDKs

Overview
- Getting started
- Send first message
- Migration guide
- User
- Overview
- - Retrieving and updating user information
  - Retrieve the online status of a user
  - Update user profile
  - Retrieve the latest information on participants
- - Managing user metadata
  - Manage user metadata
- Channel
- Overview
- - Creating a channel
  - Create a channel
- - Managing operators
  - Register and remove operators
- - Joining and leaving a channel
  - Enter and exit an open channel
  - Join and leave a group channel
- - Retrieving channels
  - Retrieve a list of channels
  - Retrieve a channel by URL
- - Inviting users to a group channel
  - Invite users as members
  - Accept or decline an invitation
- - Categorizing channels
  - Categorize channels by custom type
- - Managing channels
  - Delete a channel
  - Hide or archive a group channel
  - Refresh all data related to a group channel
- - Moderating a channel
  - Freeze and unfreeze a channel
- - Managing channel metadata
  - Manage channel metadata
- - Managing channel metacounters
  - Manage channel metacounters
- Message
- Overview
- - Sending a message
  - Send a message
  - Send an admin message
  - Track file upload progress using a handler
  - Cancel an in-progress file upload
  - Share an encrypted file
  - Spam flood protection
  - Smart throttling
- - Using message collection
  - Message collection
- - Receiving messages through event handler
  - Receive messages in a channel
- - Using message threading
  - Create a message thread
  - List replies in a message thread
- - Retrieving a message
  - Retrieve a message
- - Searching messages in a group channel
  - Search messages by a keyword
- - Managing a message
  - Copy a message
  - Update a message
  - Delete a message
  - React to a message in a group channel
  - Clear the chat history in a group channel
  - Send typing indicators to other members
  - Display Open Graph tags in a message
  - Generate thumbnails of a file message
- - Managing scheduled messages in group channel
  - Create a scheduled message
  - Retrieve a scheduled message
  - Update a scheduled message
  - Cancel a scheduled message
  - Send a scheduled message immediately
  - List all scheduled messages
  - Retrieve the total number of scheduled messages
- - Managing pinned messages in group channels
  - Pin a message
  - Unpin a message
- - Loading messages
  - Load previous messages
  - Load messages by timestamp or message ID
- - Listing changelogs
  - List changelogs of messages
- - Marking messages as read in a group channel
  - Mark messages as read
- - Marking messages as delivered in a group channel
  - Mark messages as delivered
- - Mentioning other users in a message
  - Mention other users in a message
- - Managing polls
  - Create a poll
  - Retrieve a poll
  - Update a poll
  - Delete a poll
  - Close a poll
  - Add a poll option
  - Retrieve a poll option
  - Update a poll option
  - Delete a poll option
  - Cast or cancel a vote
  - Retrieve a list of polls
  - Retrieve a list of voters
  - List changelogs of polls
- - Retrieving unread count in a group channel
  - Unread messages in a channel
  - Unread messages in all channels
  - Unread channels
  - Members who haven't received a message
  - Members who haven't read a message
  - Unread items
- - Categorizing messages
  - Categorize messages by custom type
- - Adding extra data to a message
  - Add extra data to a message
- - Translating messages
  - Auto-translate messages
  - Translate messages on-demand
  - Translation engine
- Application
- Overview
- - Authenticating a user
  - Authentication
- - Understanding rate limits
  - Rate limits
- Event handler
- Overview
- - Managing channel event handlers
  - Add or remove a channel event handler
- - Managing connection event handlers
  - Add or remove a connection event handler
- - Managing user event handlers
  - Add or remove a user event handler
- Push notifications
- Overview
- - Managing push notifications
  - Set up push notifications
  - Configure push notification preferences
  - Push notification content templates
  - Push notification tester
  - Push notification translation
- Report
- Overview
- - Creating a report
  - Report a message, user, or channel
- Local caching
- Overview
- - Using group channel collection
  - Group channel collection
- - Using message collection
  - Message collection
Migrating to Sendbird
Deprecated
Error codes
Logger

Chat SDKs Flutter v4

Chat SDKs Flutter

Chat SDKs

Flutter

Version 4

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Retrieve a list of banned users

You can create a query to retrieve a list of banned users in both open and group channels. Only users registered as channel operators may use the following code.

Dart

try {
  // Retrieve banned users.
  final query = BannedUserListQuery()
    ..channelType = ChannelType.open; // ChannelType can be open or group.

  final users = await query.next();
} catch (e) {
  // Handle error.
}

Sample app