OC-UI阶段学习36-即时通信2 XMPP 好友列表 聊天信息

即时通信2 好友列表 聊天信息


学了cocoaPods,尝试使用它添加第三方的XMPPFramework

(1) 写好podfile:

platform:ios,'8.0'
pod 'XMPPFramework', '~> 3.6.6'

(2) 安装,pod install

(3) 通过.xcworkspace打开工程

这样就直接可以用了,比之前的配置简单了很多


一、获取好友列表

这篇内容与上篇相关,首先在XMPPTool.m中添加一个方法,用来激活模块,当连接成功后调用这个方法。

//激活相关的模块
-(void) activeModules
{
    //1.花名册存储对象
    self.rosterStorage = [XMPPRosterCoreDataStorage sharedInstance];
    //2.花名册模块
    self.rosterModule = [[XMPPRoster alloc] initWithRosterStorage:self.rosterStorage];
    //3.激活此模块
    [self.rosterModule activate:self.myStream];
    //4.添加roster代理
    [self.rosterModule addDelegate:self delegateQueue:dispatch_get_main_queue()];
    
    //    //1.消息存储对象
    //    self.msgStorage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
    //    self.msgModule = [[XMPPMessageArchiving alloc] initWithMessageArchivingStorage:self.msgStorage];
    //    [self.msgModule activate:self.xmppStream];
    //    [self.msgModule addDelegate:self delegateQueue:dispatch_get_main_queue()];
    
}

然后写上搜索好友列表的方法

//查询好友的方法
-(void)getFriends
{   //查询预备工作,context request,entity
    NSManagedObjectContext *context = _rosterStorage.mainThreadManagedObjectContext;
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"XMPPUserCoreDataStorageObject" 
                                   inManagedObjectContext:context];
    [fetchRequest setEntity:entity];

    //查询条件
    //筛选本用户的好友
    NSString *userinfo = [NSString stringWithFormat:@"%@@127.0.0.1",self.userName];
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"streamBareJidStr = %@",userinfo];
    [fetchRequest setPredicate:predicate];
    //排序
    NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"displayName"ascending:YES];
    [fetchRequest setSortDescriptors:[NSArray arrayWithObjects:sortDescriptor, nil]];
    
    NSError *error = nil;
    //执行查询获得结果
    NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&error];
    
    //输出所有好友的名字
    for (XMPPUserCoreDataStorageObject *item in fetchedObjects) {
        NSString *name = item.displayName;
        NSLog(@"name = %@",name);
    }
}


还可以通过代理的方法获得用户的好友,导入XMPPRosterDelegate

问题的关键是这些代理方法执行的时间,在登录成功的代理执行之后

#pragma mark -- 好友列表协议方法
-(void)xmppRosterDidBeginPopulating:(XMPPRoster *)sender withVersion:(NSString *)version
{
    NSLog(@"开始获取好友列表");
    //这里对本地的用户数组进行判断,如果有残留的信息,应该清空
    if (self.allUserInfoArray.count > 0) {
        [self.allUserInfoArray removeAllObjects];
    }
}

//获取所有好友,有多少好友,这个代理方法执行几遍
-(void)xmppRoster:(XMPPRoster *)sender didReceiveRosterItem:(DDXMLElement *)item
{  //得到item的jid
    NSString *jid = [[item attributeForName:@"jid"]stringValue];

    //转换成XMPPJID类型
    XMPPJID *userJID = [XMPPJID jidWithString:jid];
    NSLog(@"%@",[userJID user]);
    //将所有userJID放入数组,以便在获取好友列表结束时为外部传值
    [self.allUserInfoArray addObject:userJID];
}

//登录成功后会执行这个代理
-(void)xmppRosterDidEndPopulating:(XMPPRoster *)sender
{
    NSLog(@"获取好友列表结束,此处向外部传值");
    self.userListB(_allUserInfoArray);
    
}

把好友显示在TableView上就不说了



二、聊天信息

首先是发送接收消息相关的方法,在这里组装好xml格式的消息,再发送消息

jid的内容大概是这个格式[email protected]

#pragma mark -- 聊天相关
//发送消息方法
-(void)sendMessage:(NSString *)sendMsg toJid:(XMPPJID *)jid
{
    //组装xml格式的消息
    XMPPMessage *msg = [XMPPMessage messageWithType:@"chat" to:jid];
    /*添加内容节点
     <message type = "chat" ,ToJID = toJid>
     <body>sendMsg</body>
     </message>
     */
    [msg addBody:sendMsg];
    //发送
    [self.myStream sendElement:msg];
}

下面是代理方法

#pragma mark -- 消息代理方法
-(void)xmppStream:(XMPPStream *)sender didSendMessage:(XMPPMessage *)message
{
    NSLog(@"发送消息成功");
}
-(void)xmppStream:(XMPPStream *)sender didFailToSendMessage:(XMPPMessage *)message error:(NSError *)error
{
    NSLog(@"发送失败");
}
//接收到消息触发
-(void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
{
    NSLog(@"接收到消息--%@",[[message attributeForName:@"body"]stringValue]);
}

再写获得聊天信息的方法,同样是在数据库进行查找

#pragma mark -- 查询消息记录
-(void)getChatMsgMethod
{
    //初始化聊天记录的存储器
    XMPPMessageArchivingCoreDataStorage *storage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
    //初始化归档对象,归档对象从服务器获取聊天记录,再存进storage
    XMPPMessageArchiving *archiving = [[XMPPMessageArchiving alloc]initWithMessageArchivingStorage:storage];
    //在通道中激活
    [archiving activate:_myStream];
    
    //获得上下文
    NSManagedObjectContext *context = storage.mainThreadManagedObjectContext;
    
    //查询
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"XMPPMessageArchiving_Message_CoreDataObject" inManagedObjectContext:context];
    [fetchRequest setEntity:entity];
    
    //获取本人的Jid对象
    XMPPJID *mineJid = [XMPPJID jidWithUser:self.userName domain:@"127.0.0.1" resource:nil];
    
    //聊天双方的Jid满足条件
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"streamBareJidStr == %@ AND bareJidStr == %@", mineJid,_friendJid];
    [fetchRequest setPredicate:predicate];
    //根据时间排序
    NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"timestamp"
                                                                   ascending:YES];
    [fetchRequest setSortDescriptors:[NSArray arrayWithObjects:sortDescriptor, nil]];
    
    NSError *error = nil;
    NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&error];
    if (fetchedObjects.count < 1) {
        NSLog(@"no chat");
    }
    else
    {   //遍历输出聊天信息
        for (int i = 0; i<fetchedObjects.count; i++) {
            XMPPMessageArchiving_Message_CoreDataObject *object = [fetchedObjects objectAtIndex:i];
            //消息内容
            NSString *msg = object.body;
            //发送人
            NSString *name = object.bareJidStr;
            //发送时间
            NSDate *timeStamp = object.timestamp;
            NSLog(@"%@--%@--%@",msg,name,timeStamp);
        }
    }
}

完成了,fk,通过spark登录的用户,可以接收到模拟器发出的消息,但是spark给模拟器发送消息,触发不了相应的代理方法,查询聊天记录时只能看到模拟器发是消息

另一方面,每个工程虽然用一样的用户名和密码登录,但是各自发出的消息和查看到的聊天记录却是各自独立的。可能每个工程是自己独立的CoreData

还有会话气泡(根据文字自适应长度)和语音图片的问题,有空了再了解



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