EMChatManager class Null safety
The chat manager class, responsible for sending and receiving messages, loading and deleting conversations, and downloading attachments.
The sample code for sending a text message:
EMMessage msg = EMMessage.createTxtSendMessage(
username: toChatUsername, content: content);
await EMClient.getInstance.chatManager.sendMessage(msg);
- Available Extensions
Properties
- hashCode → int
-
The hash code for this object.
read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
addChatManagerListener(
EMChatManagerListener listener) → void - Adds the chat manager listener. After calling this method, you can listen for new messages when they arrive.
-
clearAllChatManagerListeners(
) → void - Removes all chat manager listeners.
-
deleteConversation(
String conversationId, {bool deleteMessages = true}) → Future< bool> - Deletes a conversation and its related messages from the local database.
-
deleteRemoteConversation(
String conversationId, {EMConversationType conversationType = EMConversationType.Chat, bool isDeleteMessage = true}) → Future< void> - Deletes the specified conversation and the related historical messages from the server.
-
downloadAttachment(
EMMessage message) → Future< void> - Downloads the attachment files from the server.
-
downloadThumbnail(
EMMessage message) → Future< void> - Downloads the thumbnail if the message has not been downloaded before or if the download fails.
-
fetchGroupAcks(
String msgId, String groupId, {String? startAckId, int pageSize = 0}) → Future< EMCursorResult< EMGroupMessageAck> > - Gets read receipts for group messages from the server with pagination.
-
fetchHistoryMessages(
{required String conversationId, EMConversationType type = EMConversationType.Chat, int pageSize = 20, String startMsgId = ''}) → Future< EMCursorResult< EMMessage> > - Gets historical messages of the conversation from the server with pagination.
-
getConversation(
String conversationId, {EMConversationType type = EMConversationType.Chat, bool createIfNeed = true}) → Future< EMConversation?> - Gets the conversation by conversation ID and conversation type.
-
getConversationsFromServer(
) → Future< List< EMConversation> > - Gets the conversation list from the server.
-
getUnreadMessageCount(
) → Future< int> - Gets the count of the unread messages.
-
importMessages(
List< EMMessage> messages) → Future<void> - Imports messages to the local database.
-
loadAllConversations(
) → Future< List< EMConversation> > - Gets all conversations from the local database.
-
loadMessage(
String messageId) → Future< EMMessage?> - Loads a message from the local database by message ID.
-
markAllConversationsAsRead(
) → Future< void> - Marks all messages as read.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
recallMessage(
String messageId) → Future< void> - Recalls the sent message.
-
removeChatManagerListener(
EMChatManagerListener listener) → void - Removes the chat manager listener.
-
resendMessage(
EMMessage message) → Future< EMMessage> - Resend a message.
-
searchMsgFromDB(
String keywords, {int timeStamp = -1, int maxCount = 20, String from = '', EMSearchDirection direction = EMSearchDirection.Up}) → Future< List< EMMessage> > - Retrieves messages from the database according to the parameters.
-
sendConversationReadAck(
String conversationId) → Future< bool> - Sends the conversation read receipt to the server. This method is only for one-to-one chat conversations.
-
sendGroupMessageReadAck(
String msgId, String groupId, {String? content}) → Future< bool> - Sends the group message receipt to the server.
-
sendMessage(
EMMessage message) → Future< EMMessage> - Sends a message.
-
sendMessageReadAck(
EMMessage message) → Future< bool> - Sends the read receipt to the server.
-
toString(
) → String -
A string representation of this object.
inherited
-
updateMessage(
EMMessage message) → Future< void> - Updates the local message.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited