我正在使用 xmppframework 开发聊天应用程序，并且我已成功完成发送和接收消息，但是
1) 如果我与用户 A 聊天并且用户 B 向我发送消息，我如何识别用户 B 向我发送消息。 （我已经在核心数据中维护了消息，因此将保存消息） 2) 我如何识别 received 消息是已读还是未读
注意：我使用了消息保存
xmppMessageArchivingStorage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
xmppMessageArchivingModule = [[XMPPMessageArchiving alloc] initWithMessageArchivingStorage:xmppMessageArchivingStorage];
谢谢
【问题讨论】：
标签： ios iphone xmpp xmppframework
你可以看XEP-0184
这应该是消息节格式
<message
from='sender@domain/resource'
id='messageId-1010'
to='receiver@domain/resource'>
<body>your message </body>
<request xmlns='urn:xmpp:receipts'/>
</message>
这是收到的响应消息
<message
from='receiver@domain/resource'
id='packetId'
to='sender@domain/resource'>
<received xmlns='urn:xmpp:receipts' id='messageId-1010'/>
</message>
这里messageId-1010 将是唯一的，让您知道它是哪个消息响应。
【讨论】：
from 属性。 from 属性值是发送者 JID
适用于面临同样问题的用户。
如果您想获取已读回执，而不是发送自动消息传递回执，而是在用户阅读该消息时发送它。每条消息都有其对应的 message_id。使用该 message_id 发送已阅读特定消息的送达回执。建立连接时添加以下行
//message delivery
XMPPMessageDeliveryReceipts* xmppMessageDeliveryRecipts = [[XMPPMessageDeliveryReceipts alloc] initWithDispatchQueue:dispatch_get_main_queue()];
//don't write this line as it will send auto receipts whenever message will be delivered, but we want to send delivery receipts when user has read the message.
//xmppMessageDeliveryRecipts.autoSendMessageDeliveryReceipts = YES;
xmppMessageDeliveryRecipts.autoSendMessageDeliveryRequests = YES;
[xmppMessageDeliveryRecipts activate:self.xmppStream];
我在消息实体中使用了“chatStatus”属性。对于发件人，我将 chatStatus 的值保持为已发送、未发送或已接收（是否被另一方接收）。对于接收方，我将值保持为已读或未读（我是否已阅读消息，因此对于未读消息，我可以发送已读回执）。
点击发送按钮：
//Save to your Message Entity
NSMutableDictionary *m = [[NSMutableDictionary alloc] init];
[m setObject: message_body forKey:@"message_body"];
[m setObject:messageID forKey:@"message_id"];
[m setObject:@"yes" forKey:@"isOutgoing"];
[m setObject:dateString forKey:@"date"];
[m setObject:timeString forKey:@"time"];
[m setObject:[NSDate date] forKey:@"timeStamp"];
[m setObject:yourId forKey:@"from"];
[m setObject:toId forKey:@"to"];
if (!Is_InternetAvailable]) {
[m setObject:unsent forKey:@"chatStatus"];
}
else{
[m setObject:sent forKey:@"chatStatus"];
}
[[CoreDataMethods sharedCoreDataMethods] saveUserMessage:m];
}
在 cellForRowAtIndexPath 中：
if ([message isoutGoing]) {//If I have sent the message
// Mine bubble
if ([[messageDict valueForKey:@"chatStatus"] isEqualToString:unsent]) {
//set unsent image
}
else if ([[messageDict valueForKey:@"chatStatus"] isEqualToString:sent]){
//set sent image
}
else if ([[messageDict valueForKey:@"chatStatus"] isEqualToString:received]){
//set Received Image
}
}
else{
// Other Bubble , Notify them that you have read the message if it is unread/new message
if ([[messageDict valueForKey:@"chatStatus"] isEqualToString:unread]) {
//send read receipt
NSXMLElement *receivedelement = [NSXMLElement elementWithName:@"received" xmlns:@"urn:xmpp:receipts"];
NSXMLElement *message = [NSXMLElement elementWithName:@"message" xmlns:@"jabber:client"];
[message addAttributeWithName:@"to" stringValue:toId];
[message addAttributeWithName:@"from" stringValue:fromID];
[receivedelement addAttributeWithName:@"id" stringValue:[messageDict valueForKey:@"message_id"]];
[message addChild:receivedelement];
//XMPPMessage *generatedReceiptResponse = [[messageDict valueForKey:@"xmppMessage"] generateReceiptResponse];
[[[kAppDelegate xmppHandler] xmppStream] sendElement:message];
// update message entity
[self updateChatStatus:read withMessageID:[messageDict valueForKey:@"message_id"]];
}
}
最后当你在didReceiveMessage中收到delivery Receipt时，将chatStatus更新为received
- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message{
if ([message hasReceiptResponse]) {//message read
//Update database message entity
[self updateChatStatus:@"received" withMessageID:[message receiptResponseID]];
}
}
您可以根据需要设置 chatStatus 的值。至于未发送的消息，我已将其设置为在 didSendMessage 委托中发送。
注意：在我的应用中，我只需要显示已读、已发送和未设置状态，而不是已发送状态。如果您还想显示交付状态，请不要评论 autoSendMessageDeliveryReceipts 并且每当读取消息时将 IQ 节发送给发件人而不是交付收据并相应地更改聊天状态。在发件人方面，您必须为已发送的聊天状态取一个值，未发送，收到，已送达。
希望对你有帮助！！
【讨论】：