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Chat / Android

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
- - Receiving messages through event handler
  - Receive messages in an open channel
  - Receive messages in a group 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 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
- - 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
- - 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
- Notifications
- Overview
- - Multi-device support
  - Set up push notifications for FCM
  - Set up push notifications for HMS
- 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
Deprecated
Error codes
Logger

Chat Android v4

Chat Android

Chat

Android

Version 4

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Message

Receive messages in an open channel

Users can receive messages from other participants through the onMessageReceived() method in the channel event handler. A BaseMessage object for each received message is one of the following message types.

Message type	Description
UserMessage	A text message sent by a user
FileMessage	A binary file message sent by a user
AdminMessage	A text message sent by an admin through the Chat API

To register multiple concurrent handlers, pass a UNIQUE_HANDLER_ID argument as a unique identifier into the SendbirdChat.addChannelHandler() method.

Kotlin

SendbirdChat.addChannelHandler(
    UNIQUE_HANDLER_ID,
    object : OpenChannelHandler() {
        override fun onMessageReceived(channel: BaseChannel, message: BaseMessage) {
            // You can customize how to display the different types of messages with the result object in the message parameter.
            when (message) {
                is UserMessage -> {}
                is FileMessage -> {}
                is AdminMessage -> {}
            }
        }
    }
)

When the UI isn't valid anymore, remove the channel event handler.

Kotlin

SendbirdChat.removeChannelHandler(UNIQUE_HANDLER_ID);

Event handler for message threading

Once a reply is created or deleted from a thread, the onThreadInfoUpdated() event handler is invoked. The method returns a ThreadInfoUpdateEvent object that has the latest information about the thread. This object needs to be applied to the parent message object.

Note: Like other messages, when a reply is created in a channel, the onMessageReceived() method of the channel event handler in client apps is called.

Kotlin

override fun onThreadInfoUpdated(channel: BaseChannel, threadInfoUpdateEvent: ThreadInfoUpdateEvent) {
    // Look for a message that has threadInfoUpdateEvent.targetMessageId
    // Apply the event to the message.
    parentMessage.applyThreadInfoUpdateEvent(threadInfoUpdateEvent)
}

List of parameters

Parameter name	Type	Description
channel	BaseChannel	Specifies the channel that has the message thread.
threadInfoUpdateEvent	ThreadInfoUpdateEvent	Specifies a `ThreadInfoUpdateEvent` object that has the latest information about the thread.

Sample app