ChatEventHandler class Null safety

The chat event handler.

This handler is used to check whether messages are received. If messages are sent successfully, a delivery receipt will be returned (delivery receipt needs to be enabled: ChatOptions.requireDeliveryAck. If the peer reads the received message, a read receipt will be returned (read receipt needs to be enabled: ChatOptions.requireAck). This API should be implemented in the app to listen for message status changes.

Adds chat event handler:

  ChatClient.getInstance.chatManager.addEventHandler(UNIQUE_HANDLER_ID, ChatEventHandler());

Remove a chat event handler:

  ChatClient.getInstance.chatManager.removeEventHandler(UNIQUE_HANDLER_ID);

Constructors

ChatEventHandler({void onMessagesReceived(List<ChatMessage> messages)?, void onCmdMessagesReceived(List<ChatMessage> messages)?, void onMessagesRead(List<ChatMessage> messages)?, void onGroupMessageRead(List<ChatGroupMessageAck> groupMessageAcks)?, VoidCallback? onReadAckForGroupMessageUpdated, void onMessagesDelivered(List<ChatMessage> messages)?, void onMessagesRecalled(List<ChatMessage> messages)?, VoidCallback? onConversationsUpdate, void onConversationRead(String from, String to)?, void onMessageReactionDidChange(List<ChatMessageReactionEvent> events)?})
The chat event handler.

Properties

hashCode → int
The hash code for this object.
read-onlyinherited
onCmdMessagesReceived → (void Function(List<ChatMessage> messages)?)
Occurs when a command message is received.
final
onConversationRead → (void Function(String from, String to)?)
Occurs when a conversation read receipt is received.
final
onConversationsUpdate → VoidCallback?
Occurs when the conversation updated.
final
onGroupMessageRead → (void Function(List<ChatGroupMessageAck> groupMessageAcks)?)
Occurs when a read receipt is received for a group message.
final
onMessageReactionDidChange → (void Function(List<ChatMessageReactionEvent> events)?)
Occurs when the Reaction data changes.
final
onMessagesDelivered → (void Function(List<ChatMessage> messages)?)
Occurs when a delivery receipt is received.
final
onMessagesRead → (void Function(List<ChatMessage> messages)?)
Occurs when a read receipt is received for a message.
final
onMessagesRecalled → (void Function(List<ChatMessage> messages)?)
Occurs when a received message is recalled.
final
onMessagesReceived → (void Function(List<ChatMessage> messages)?)
Occurs when a message is received callback.
final
onReadAckForGroupMessageUpdated → VoidCallback?
Occurs when the update for the group message read status is received.
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited