Update a message

The Chat SDK supports updating the content of all storable message types, including text, image, GIF, voice, video, reference, file, and custom messages.

Update a message

In Swift, call BaseChannel.updateMessage(params:completion:) to update message content. The Objective-C selector is shown in the secondary tab.

Swift

swift

import NexconnChatSDK

guard let messageContent = message.content as? TextMessage else {
    return
}

messageContent.text = "Updated text"

let params = UpdateMessageParams(
    messageId: message.messageId,
    content: messageContent
)

BaseChannel.updateMessage(params: params) { updatedMessage, error in
    guard let updatedMessage, error == nil else {
        print("Failed to update message: \(error?.localizedDescription ?? "unknown error")")
        return
    }

    print("Updated message: \(updatedMessage.messageId)")
}

Objective-C

Objective C

NCTextMessage *messageContent = (NCTextMessage *)message.content;
messageContent.text = @"Updated text";

NCUpdateMessageParams *params = [[NCUpdateMessageParams alloc]
    initWithMessageId:message.messageId
              content:messageContent];

[NCBaseChannel updateMessageWithParams:params completion:^(NCMessage * _Nullable updatedMessage, NCError * _Nullable error) {
    if (error == nil) {
        NSLog(@"Updated message: %@", updatedMessage.messageId);
    }
}];

Property	Type	Description
messageId	NSString	Server message ID (message.messageId)
content	NCMessageContent	Updated message content

Listen for updates

Other devices and users receive update callbacks via MessageHandler:

Swift

swift

import NexconnChatSDK

final class MessageEditHandler: NSObject, MessageHandler {
    func start() {
        NCEngine.addMessageHandler(identifier: "MyHandler", handler: self)
    }

    func onMessagesUpdated(_ event: MessagesUpdatedEvent) {
        print("Updated messages: \(event.messages.count)")
    }

    func onUpdatedMessageSyncCompleted(_ event: UpdatedMessageSyncCompletedEvent) {
        print("Updated message sync completed.")
    }
}

Objective-C

Objective C

[NCEngine addMessageHandlerWithIdentifier:@"MyHandler" handler:self];

- (void)onMessagesUpdated:(NCMessagesUpdatedEvent *)event {
    // event.messages: the updated messages
}

- (void)onUpdatedMessageSyncCompleted:(NCUpdatedMessageSyncCompletedEvent *)event {
    // Sync of updated messages completed after reconnection
}