Inherits io.agora.chat.EMBase< T >.

Classes
enum	ConversationType

enum	SearchDirection

Public Member Functions
String	conversationId ()

ConversationType	getType ()

int	getUnreadMsgCount ()

void	markAllMessagesAsRead ()

int	getAllMsgCount ()

boolean	isChatThread ()

List< ChatMessage >	loadMoreMsgFromDB (String startMsgId, int pageSize)

List< ChatMessage >	loadMoreMsgFromDB (String startMsgId, int pageSize, SearchDirection direction)

List< ChatMessage >	searchMsgFromDB (long timeStamp, int maxCount, SearchDirection direction)

List< ChatMessage >	searchMsgFromDB (ChatMessage.Type type, long timeStamp, int maxCount, String from, SearchDirection direction)

List< ChatMessage >	searchMsgFromDB (String keywords, long timeStamp, int maxCount, String from, SearchDirection direction)

List< ChatMessage >	searchMsgFromDB (long startTimeStamp, long endTimeStamp, int maxCount)

List< ChatMessage >	searchCustomMsgFromDB (String keywords, long timeStamp, int maxCount, String from, SearchDirection direction)

ChatMessage	getMessage (String messageId, boolean markAsRead)

void	markMessageAsRead (String messageId)

List< ChatMessage >	getAllMessages ()

void	removeMessage (String messageId)

ChatMessage	getLastMessage ()

ChatMessage	getLatestMessageFromOthers ()

void	clear ()

void	clearAllMessages ()

void	setExtField (String ext)

String	getExtField ()

boolean	isPinned ()

long	getPinnedTime ()

boolean	isGroup ()

boolean	insertMessage (ChatMessage msg)

boolean	appendMessage (ChatMessage msg)

boolean	updateMessage (ChatMessage msg)

String	getMessageAttachmentPath ()

void	removeMessagesFromServer (List< String > msgIdList, CallBack callBack)

void	removeMessagesFromServer (long beforeTimeStamp, CallBack callBack)

boolean	removeMessages (long startTime, long endTime)

Static Public Member Functions
static ConversationType	msgType2ConversationType (String id, ChatMessage.ChatType type)

Detailed Description

The conversation class, which defines one-to-one conversations, group conversations, and chat room conversations.

Each type of conversation involves messages that are sent and received.

The following code shows how to get the number of the unread messages from the conversation.

// ConversationId can be the ID of the peer user, the group ID, or the chat room ID:
Conversation conversation = ChatClient.getInstance().chatManager().getConversation(conversationId);
int unread = conversation.getUnreadMsgCount();

Member Function Documentation

◆ appendMessage()

boolean io.agora.chat.Conversation.appendMessage ( ChatMessage msg )

Inserts a message to the end of the conversation in the local database.

To insert the message correctly, ensure that the conversation ID of the message is the same as that of the conversation.

After a message is inserted, the SDK will automatically update attributes of the conversation, including latestMessage.

Parameters

msg	The message instance.

◆ clear()

void io.agora.chat.Conversation.clear ( )

Deletes all the messages in the conversation.

This method only deletes all the messages in a conversation in the memory, but not the messages in the local database.

When exiting a conversation, you need to clear the memory to reduce the memory consumption.

◆ clearAllMessages()

void io.agora.chat.Conversation.clearAllMessages ( )

Deletes all the messages in the conversation from the memory and local database.

◆ conversationId()

String io.agora.chat.Conversation.conversationId ( )

The conversation ID, which depends on the conversation type.

One-to-one chat/help desk: The conversation ID is the user ID of the peer user.
Group chat: The conversation ID is the group ID.
Chat room: The conversation ID is the chat room ID.

Returns: The conversation ID.

◆ getAllMessages()

List< ChatMessage > io.agora.chat.Conversation.getAllMessages ( )

Gets all messages of the conversation in the local memory.

If no message is found in the memory, the SDK will load the latest message from the local database.

Returns: The message list.

◆ getAllMsgCount()

int io.agora.chat.Conversation.getAllMsgCount ( )

Gets the number of all unread messages in the conversation in the local database.

Returns: The number of all unread messages in the conversation.

◆ getExtField()

String io.agora.chat.Conversation.getExtField ( )

Gets the extension field of the conversation.

The extension field is only stored in the local database, but not synchronized to the server.

The extension field of a chat thread conversation is not saved in the local database.

Returns: The extension content.

◆ getLastMessage()

ChatMessage io.agora.chat.Conversation.getLastMessage ( )

Gets the latest message in the conversation.

A call to this method has no impact on the number of unread messages.

The SDK first retrieves the message from the memory. If no message is found, the SDK will retrieve it from the local database and load it.

Returns: The message instance.

◆ getLatestMessageFromOthers()

ChatMessage io.agora.chat.Conversation.getLatestMessageFromOthers ( )

Gets the latest received message in the conversation.

Returns: The message instance.

◆ getMessage()

ChatMessage io.agora.chat.Conversation.getMessage	(	String	messageId,
		boolean	markAsRead
	)

Gets the message with message ID.

The SDK first retrieves the message from the memory. If no message is found, the SDK will retrieve it from the local database and load it.

Parameters

messageId	The message ID.
markAsRead	Whether to mark the retrieved message as read. `true`: Yes. `false`: No.

Returns: message The retrieved message instance.

◆ getMessageAttachmentPath()

String io.agora.chat.Conversation.getMessageAttachmentPath ( )

Gets the path to save attachments in the conversation.

Before clearing conversation data, you can call this method to check the path to save attachments related to the conversation. If necessary, implement exception protection.

Returns: The path to save attachments in the conversation.

◆ getPinnedTime()

long io.agora.chat.Conversation.getPinnedTime ( )

Gets the time when the conversation is pinned.

Returns: The UNIX timestamp when the conversation is pinned. The unit is millisecond. This value is 0 when the conversation is not pinned.

◆ getType()

ConversationType io.agora.chat.Conversation.getType ( )

Gets the conversation type.

Returns: The conversation type.

◆ getUnreadMsgCount()

int io.agora.chat.Conversation.getUnreadMsgCount ( )

Gets the number of unread messages in the conversation.

Returns: The unread message count in the conversation.

◆ insertMessage()

boolean io.agora.chat.Conversation.insertMessage ( ChatMessage msg )

Inserts a message to the conversation in the local database。

To insert the message correctly, ensure that the conversation ID of the message is the same as that of the conversation.

The message will be inserted based on the Unix timestamp included in it. Upon message insertion, the SDK will automatically update attributes of the conversation, including latestMessage.

Parameters

msg	The message instance.

◆ isChatThread()

boolean io.agora.chat.Conversation.isChatThread ( )

Checks whether the current conversation is a thread conversation.

Returns

Whether the conversation is a chat thread conversation.

true: Yes.
false: No.

◆ isGroup()

boolean io.agora.chat.Conversation.isGroup ( )

Checks whether it is a group conversation or a chat room conversation, or a conversation of another type.

Returns

Whether it is a group conversation or a chat room conversation, or a conversation of another type.

true: It is a group conversation or a chat room conversation.
false: It is not a group conversation or a chat room conversation.

◆ isPinned()

boolean io.agora.chat.Conversation.isPinned ( )

Checks whether the conversation is pinned.

Returns

Whether the conversation is pinned.

true: Yes.
false: No. The conversation is unpinned.

◆ loadMoreMsgFromDB() [1/2]

List< ChatMessage > io.agora.chat.Conversation.loadMoreMsgFromDB	(	String	startMsgId,
		int	pageSize
	)

Loads messages from the local database.

The loaded messages will be put in the conversation in the memory according to the timestamp in them and will be returned when you call getAllMessages().

Parameters

startMsgId	The starting message ID for query. The SDK loads messages, starting from the specified one, in the descending order of the timestamp included in them. If this parameter is set as `null` or an empty string, the SDK retrieves messages, from the latest one, according to the descending order of the timestamp included in them.
pageSize	The number of messages that you expect to get on each page. The value range is [1,400].

Returns: The list of retrieved messages (excluding the one with the starting ID).

◆ loadMoreMsgFromDB() [2/2]

List< ChatMessage > io.agora.chat.Conversation.loadMoreMsgFromDB	(	String	startMsgId,
		int	pageSize,
		SearchDirection	direction
	)

Loads the messages from the local database, starting from a specific message ID.

The loaded messages will be put in the conversation in the memory according to the timestamp included in them.

Parameters

startMsgId	The starting message ID for query. After this parameter is set, the SDK retrieves messages, from the specified one, according to the message search direction. If this parameter is set as `nil`, the SDK retrieves messages according to the search direction while ignoring this parameter. If `direction` is set as `UP`, the SDK retrieves messages, starting from the latest one, in the descending order of the timestamp included in them. If `direction` is set as `DOWN`, the SDK retrieves messages, starting from the oldest one, in the ascending order of the timestamp included in them.
pageSize	The number of messages that you expect to get on each page. The value range is [1,400].
direction	The message search direction. See SearchDirection. `UP`: The SDK retrieves messages in the descending order of the timestamp included in them. `DOWN`: The SDK retrieves messages in the ascending order of the timestamp included in them.

Returns: The list of retrieved messages (excluding the one with the starting ID).

◆ markAllMessagesAsRead()

void io.agora.chat.Conversation.markAllMessagesAsRead ( )

Marks all unread messages as read.

◆ markMessageAsRead()

void io.agora.chat.Conversation.markMessageAsRead ( String messageId )

Marks a message as read.

You can also call ChatMessage#setUnread(boolean) to mark the message as read.

Parameters

messageId The message ID.

◆ msgType2ConversationType()

static ConversationType io.agora.chat.Conversation.msgType2ConversationType	(	String	id,
		ChatMessage.ChatType	type
	)

static

Converts a message type to a conversation type.

Parameters

id	The message ID.
type	The message type.

Returns: The conversation type.

◆ removeMessage()

void io.agora.chat.Conversation.removeMessage ( String messageId )

Deletes a message in the local database.

Parameters

messageId The ID of the message to delete.

◆ removeMessages()

boolean io.agora.chat.Conversation.removeMessages	(	long	startTime,
		long	endTime
	)

Deletes messages sent or received in a certain period from the local database.

Parameters

startTime	The starting Unix timestamp for message deletion. The unit is millisecond.
endTime	The ending Unix timestamp for message deletion. The unit is millisecond.

Returns

Whether the message deletion succeeds:

If the operation succeeds, the SDK returns true.
If the operation fails, the SDK returns false.

◆ removeMessagesFromServer() [1/2]

void io.agora.chat.Conversation.removeMessagesFromServer	(	List< String >	msgIdList,
		CallBack	callBack
	)

Deletes historical messages from the server unidirectionally by message ID.

Parameters

msgIdList	The list of IDs of messages to be deleted from the server unidirectionally.
callBack	The result callback which contains the error information if the method fails. See CallBack.

◆ removeMessagesFromServer() [2/2]

void io.agora.chat.Conversation.removeMessagesFromServer	(	long	beforeTimeStamp,
		CallBack	callBack
	)

Deletes historical messages from the server unidirectionally by timestamp.

Parameters

beforeTimeStamp	The starting UNIX timestamp for unidirectional message deletion. The unit is millisecond. After the timestamp is set, this method deletes messages that are received by the server before the specified timestamp.
callBack	The result callback which contains the error information if the method fails. See CallBack.

◆ searchCustomMsgFromDB()

List< ChatMessage > io.agora.chat.Conversation.searchCustomMsgFromDB	(	String	keywords,
		long	timeStamp,
		int	maxCount,
		String	from,
		SearchDirection	direction
	)

Gets custom messages with keywords that the specified user sends in the conversation.

Note: Be cautious about memory usage when the maxCount is large.

Parameters

keywords	The keywords for search.
timeStamp	TThe starting Unix timestamp in the message for query. The unit is millisecond. After this parameter is set, the SDK retrieves messages, starting from the specified one, according to the message search direction. If this parameter is set as a negative value, the SDK retrieves from the current time.
maxCount	The maximum number of messages to retrieve. The value range is [1,400].
from	The user ID of the message sender in one-to-one chat or group chat. If this parameter is set to `null` or an empty string, the SDK searches for messages in the entire conversation.
direction	The message search direction. See SearchDirection. `UP`: The SDK retrieves messages in the descending order of the timestamp included in them. `DOWN`: The SDK retrieves messages in the ascending order of the timestamp included in them.

Returns: The list of retrieved messages (excluding the one with the starting timestamp).

◆ searchMsgFromDB() [1/4]

List< ChatMessage > io.agora.chat.Conversation.searchMsgFromDB	(	ChatMessage.Type	type,
		long	timeStamp,
		int	maxCount,
		String	from,
		SearchDirection	direction
	)

Gets messages of certain types that a specified user sends in the conversation.

Parameters

type	The message type. See Type.
timeStamp	The starting Unix timestamp in the message for query. The unit is millisecond. After this parameter is set, the SDK retrieves messages, starting from the specified one, according to the message search direction. If this parameter is set as a negative value, the SDK retrieves from the latest message.
maxCount	The maximum number of messages to retrieve each time. The value range is [1,400].
from	The user ID of the message sender in one-to-one chat or group chat. If this parameter is set to `null` or an empty string, the SDK searches for messages in the entire conversation.
direction	The message search direction. See SearchDirection. `UP`: The SDK retrieves messages in the descending order of the timestamp included in them. `DOWN`: The SDK retrieves messages in the ascending order of the timestamp included in them.

Returns: The list of retrieved messages (excluding the one with the starting timestamp).

◆ searchMsgFromDB() [2/4]

List< ChatMessage > io.agora.chat.Conversation.searchMsgFromDB	(	long	startTimeStamp,
		long	endTimeStamp,
		int	maxCount
	)

Gets a certain quantity of messages sent or received in a certain period from the local database.

Parameters

startTimeStamp	The starting Unix timestamp in the message for query. The unit is millisecond. See ChatOptions#setSortMessageByServerTime.
endTimeStamp	The ending Unix timestamp in the message for query. The unit is millisecond. See ChatOptions#setSortMessageByServerTime.
maxCount	The maximum number of messages to retrieve each time. The value range is [1,400].

Returns: The list of retrieved messages (excluding the ones with the starting timestamp and ending timestamp).

◆ searchMsgFromDB() [3/4]

List< ChatMessage > io.agora.chat.Conversation.searchMsgFromDB	(	long	timeStamp,
		int	maxCount,
		SearchDirection	direction
	)

Retrieves messages in the local database based on the Unix timestamp included in them.

Parameters

timeStamp	The starting Unix timestamp in the message for query. The unit is millisecond. After this parameter is set, the SDK retrieves messages, starting from the specified one, according to the message search direction. If you set this parameter as a negative value, the SDK retrieves messages, starting from the current time, in the descending order of the timestamp included in them.
maxCount	The maximum number of message to retrieve each time. The value range is [1,400].
direction	The message search direction. See SearchDirection. `UP`: The SDK retrieves messages in the descending order of the timestamp included in them. `DOWN`: The SDK retrieves messages in the ascending order of the timestamp included in them.

Returns: The list of retrieved messages (excluding the one with the starting timestamp).

◆ searchMsgFromDB() [4/4]

List< ChatMessage > io.agora.chat.Conversation.searchMsgFromDB	(	String	keywords,
		long	timeStamp,
		int	maxCount,
		String	from,
		SearchDirection	direction
	)

Gets messages with keywords that the specified user sends in the conversation.

Parameters

keywords	The keywords for query.
timeStamp	The starting Unix timestamp for search. The unit is millisecond. If this parameter is set as a negative value, the SDK retrieves from the current time.
maxCount	The maximum number of messages to retrieve each time. The value range is [1,400].
from	The user ID of the message sender in one-to-one chat or group chat. If this parameter is set to `null` or an empty string, the SDK searches for messages in the entire conversation.
direction	The message search direction. See SearchDirection. `UP`: The SDK retrieves messages in the descending order of the timestamp included in them. `DOWN`: The SDK retrieves messages in the ascending order of the timestamp included in them.

Returns: The list of retrieved messages (excluding the one with the starting timestamp).

◆ setExtField()

void io.agora.chat.Conversation.setExtField ( String ext )

Sets the extension field of the conversation.

The extension field is only stored in the local database, but not synchronized to the server.

The extension field of a chat thread conversation is not saved in the local database.

Parameters

ext	The extension field of the conversation.

◆ updateMessage()

boolean io.agora.chat.Conversation.updateMessage ( ChatMessage msg )

Updates a message in the local database.

After you update a message, the message ID remains unchanged and the SDK automatically updates attributes of the conversation, like latestMessage.

Parameters

msg	The message to update.

The documentation for this class was generated from the following file:

io/agora/chat/Conversation.java

Classes

Public Member Functions

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ appendMessage()

◆ clear()

◆ clearAllMessages()

◆ conversationId()

◆ getAllMessages()

◆ getAllMsgCount()

◆ getExtField()

◆ getLastMessage()

◆ getLatestMessageFromOthers()

◆ getMessage()

◆ getMessageAttachmentPath()

◆ getPinnedTime()

◆ getType()

◆ getUnreadMsgCount()

◆ insertMessage()

◆ isChatThread()

◆ isGroup()

◆ isPinned()

◆ loadMoreMsgFromDB() [1/2]

◆ loadMoreMsgFromDB() [2/2]

◆ markAllMessagesAsRead()

◆ markMessageAsRead()

◆ msgType2ConversationType()

◆ removeMessage()

◆ removeMessages()

◆ removeMessagesFromServer() [1/2]

◆ removeMessagesFromServer() [2/2]

◆ searchCustomMsgFromDB()

◆ searchMsgFromDB() [1/4]

◆ searchMsgFromDB() [2/4]

◆ searchMsgFromDB() [3/4]

◆ searchMsgFromDB() [4/4]

◆ setExtField()

◆ updateMessage()