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 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admin@127.0.0.1
#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 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
