XMPP接受发送消息

cnaka

在现阶段的通信服务中，各种标准都有，因此会出现无法实现相互连通，而XMPP(Extensible Message and presence Protocol)协议的出现，实现了整个及时通信服务协议的互通。有了这个协议之后，使用任何一个组织或者个人提供的即使通信服务，都能够无障碍的与其他的及时通信服务的用户进行交流。例如google 公司2005年推出的Google talk就是一款基于XMPP协议的即时通信软件。下面我们就谈论一下如何简单的使用XMPP的接收和发送消息

1、在XMPPFramework.h中将需要用到的头文件打开

2、在storyboard创建展示消息页面

3、定义查询结果存储器并且进行初始化

1. //消息存档
   
2. @property(nonatomic,strong) XMPPMessageArchiving * messageArch;
   
3. 
   
4. //消息存档存储模型
   
5. @property(nonatomic,strong) XMPPMessageArchivingCoreDataStorage * messageStore;

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4、在上面storyboard创建的控制器中，添加如下代码

1. AppDelegate * delgate=[UIApplication sharedApplication].delegate;
   
2.    
   
3.     //初始化头像
   
4.     XMPPJID * fromJid=[XMPPJID jidWithString:self.fromJid];
   
5.     NSData * fromData=[delgate.vCardAvatarModule photoDataForJID:fromJid];
   
6.     self.fromImage=[[UIImage  alloc] initWithData:fromData];
   
7. 
   
8.     NSString * userName= [[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];
   
9.     XMPPJID * tojid=[XMPPJID jidWithString:userName];
   
10.    
    
11.     //设置图片模型
    
12.     NSData * toData=[delgate.vCardAvatarModule photoDataForJID:tojid];
    
13.     self.meImage=[[UIImage  alloc] initWithData:toData];
    
14.    
    
15.     if (self.fromImage==nil) {
    
16.         self.fromImage=[UIImage imageNamed:@"defalut"];
    
17.     }
    
18.    
    
19.     if (self.meImage==nil) {
    
20.         self.meImage=[UIImage imageNamed:@"defalut"];
    
21.     }
    
22. 
    
23. 
    
24.     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showKey:) name:UIKeyboardWillShowNotification object:nil];
    
25.    
    
26.     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideKey:) name:UIKeyboardWillHideNotification object:nil];
    
27.    
    
28.     //初始化数据存储
    
29.   NSString *user=  [[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];
    
30.    
    
31.     //初始化请求
    
32.     NSFetchRequest * request=[[NSFetchRequest alloc] initWithEntityName:@"XMPPMessageArchiving_Message_CoreDataObject"];
    
33.     request.predicate=[NSPredicate predicateWithFormat:@"bareJidStr=%@ and streamBareJidStr=%@",self.fromJid,user];
    
34.    
    
35.    
    
36.     //定义排序
    
37.     NSSortDescriptor * des=[NSSortDescriptor sortDescriptorWithKey:@"timestamp" ascending:YES];
    
38.     [request setSortDescriptors:@[des]];
    
39.    
    
40.     //获取上下文
    
41.     NSManagedObjectContext *context=[delgate.messageStore mainThreadManagedObjectContext];
    
42.    
    
43.     //初始化结果存储器
    
44.     fetch=[[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:nil cacheName:nil];
    
45.    
    
46.     //设置代理
    
47.     fetch.delegate=self;
    
48.    
    
49.     //开始查询
    
50.     [fetch performFetch:nil];

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5、创实现tableView的代理方法

1. -(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
   
2.     id <NSFetchedResultsSectionInfo>  info=fetch.sections[section];
   
3.         NSLog(@"===%ld",info.numberOfObjects);
   
4.     return [info numberOfObjects];
   
5.    
   
6. }
   
7. - (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
   
8.     XMPPMessageArchiving_Message_CoreDataObject * obj=[fetch objectAtIndexPath:indexPath];
   
9.     JRChatTableViewCell * cell=nil;
   
10.     if (obj.isOutgoing) {
    
11.          cell=[tableView dequeueReusableCellWithIdentifier:@"cellto"];
    
12.     }else{
    
13.          cell=[tableView dequeueReusableCellWithIdentifier:@"cellfrom"];
    
14.     }
    
15.    
    
16.    
    
17.     //设置头像
    
18.     cell.image.image=self.meImage;
    
19.     cell.selectionStyle=UITableViewCellSelectionStyleNone;
    
20.     [cell setText:obj.body WithFlag:obj.isOutgoing ];
    
21.     return cell;
    
22. 
    
23. }

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6、增加键盘控制

1. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showKey:) name:UIKeyboardWillShowNotification object:nil];
   
2.    
   
3. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideKey:) name:UIKeyboardWillHideNotification object:nil];
   
4. - (void) showKey:(NSNotification * ) notify{
   
5.     CGFloat time=[notify.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]  ;
   
6.     CGRect frame=[notify.userInfo[UIKeyboardFrameBeginUserInfoKey] CGRectValue];
   
7.     [UIView animateWithDuration:time animations:^{
   
8.         self.keyView.transform=CGAffineTransformMakeTranslation(0, frame.size.height*-1);
   
9.     }];
   
10. }
    
11. 
    
12. - (void) hideKey:(NSNotification * ) notify{
    
13.     CGFloat time=[notify.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]  ;
    
14.     [UIView animateWithDuration:time animations:^{
    
15.         self.keyView.transform=CGAffineTransformIdentity;
    
16.     }];
    
17. }

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7、发送消息

1. -(BOOL)textFieldShouldReturn:(UITextField *)textField{
   
2.     [textField resignFirstResponder];
   
3.    
   
4.     //发送消息
   
5.    
   
6.     //1 取出文本
   
7.     AppDelegate * delgate=[UIApplication sharedApplication].delegate;
   
8.    
   
9.     XMPPJID * jid=[XMPPJID jidWithString:self.fromJid];
   
10.    
    
11.     //初始化消息体
    
12.     XMPPMessage * message=[XMPPMessage messageWithType:@"chat" to:jid];
    
13.     [message addBody:self.ketf.text];
    
14.    
    
15.     //发送消息
    
16.     [delgate.stream sendElement:message];
    
17.    
    
18.     //将消息置空
    
19.     self.ketf.text=nil;
    
20.     return YES;
    
21. }

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renxiao2003

XMPP确实是不错的推送消息的框架。