XMPP接受發送消息

　　在現階段的通信服務中，各種標准都有，因此會出現無法實現相互連通，而XMPP(Extensible Message and presence Protocol)協議的出現，實現了整個及時通信服務協議的互通。有了這個協議之后，使用任何一個組織或者個人提供的即使通信服務，都能夠無障礙的與其他的及時通信服務的用戶進行交流。例如google 公司2005年推出的Google talk就是一款基於XMPP協議的即時通信軟件。下面我們就談論一下如何簡單的使用XMPP的接收和發送消息

1、在XMPPFramework.h中將需要用到的頭文件打開

 

2、在storyboard創建展示消息頁面

 

3、定義查詢結果存儲器並且進行初始化

//消息存檔
@property(nonatomic,strong) XMPPMessageArchiving * messageArch;

//消息存檔存儲模型
@property(nonatomic,strong) XMPPMessageArchivingCoreDataStorage * messageStore;

4、在上面storyboard創建的控制器中，添加如下代碼

AppDelegate * delgate=[UIApplication sharedApplication].delegate;
    
    //初始化頭像
    XMPPJID * fromJid=[XMPPJID jidWithString:self.fromJid];
    NSData * fromData=[delgate.vCardAvatarModule photoDataForJID:fromJid];
    self.fromImage=[[UIImage  alloc] initWithData:fromData];

    NSString * userName= [[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];
    XMPPJID * tojid=[XMPPJID jidWithString:userName];
    
    //設置圖片模型
    NSData * toData=[delgate.vCardAvatarModule photoDataForJID:tojid];
    self.meImage=[[UIImage  alloc] initWithData:toData];
    
    if (self.fromImage==nil) {
        self.fromImage=[UIImage imageNamed:@"defalut"];
    }
    
    if (self.meImage==nil) {
        self.meImage=[UIImage imageNamed:@"defalut"];
    }

 
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showKey:) name:UIKeyboardWillShowNotification object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideKey:) name:UIKeyboardWillHideNotification object:nil];
    
    //初始化數據存儲
  NSString *user=  [[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];
    
    //初始化請求
    NSFetchRequest * request=[[NSFetchRequest alloc] initWithEntityName:@"XMPPMessageArchiving_Message_CoreDataObject"];
    request.predicate=[NSPredicate predicateWithFormat:@"bareJidStr=%@ and streamBareJidStr=%@",self.fromJid,user];
    
    
    //定義排序
    NSSortDescriptor * des=[NSSortDescriptor sortDescriptorWithKey:@"timestamp" ascending:YES];
    [request setSortDescriptors:@[des]];
    
    //獲取上下文
    NSManagedObjectContext *context=[delgate.messageStore mainThreadManagedObjectContext];
    
    //初始化結果存儲器
    fetch=[[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:nil cacheName:nil];
    
    //設置代理
    fetch.delegate=self;
    
    //開始查詢
    [fetch performFetch:nil];
    

5、創實現tableView的代理方法

-(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    id <NSFetchedResultsSectionInfo>  info=fetch.sections[section];
        NSLog(@"===%ld",info.numberOfObjects);
    return [info numberOfObjects];
    
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ 
    XMPPMessageArchiving_Message_CoreDataObject * obj=[fetch objectAtIndexPath:indexPath];
    JRChatTableViewCell * cell=nil;
    if (obj.isOutgoing) {
         cell=[tableView dequeueReusableCellWithIdentifier:@"cellto"];
    }else{
         cell=[tableView dequeueReusableCellWithIdentifier:@"cellfrom"];
    }
    
    
    //設置頭像
    cell.image.image=self.meImage;
    cell.selectionStyle=UITableViewCellSelectionStyleNone;
    [cell setText:obj.body WithFlag:obj.isOutgoing ];
    return cell;

}

6、增加鍵盤控制

  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showKey:) name:UIKeyboardWillShowNotification object:nil];
    
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideKey:) name:UIKeyboardWillHideNotification object:nil];
- (void) showKey:(NSNotification * ) notify{
    CGFloat time=[notify.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]  ;
    CGRect frame=[notify.userInfo[UIKeyboardFrameBeginUserInfoKey] CGRectValue];
    [UIView animateWithDuration:time animations:^{
        self.keyView.transform=CGAffineTransformMakeTranslation(0, frame.size.height*-1);
    }];
}

- (void) hideKey:(NSNotification * ) notify{
    CGFloat time=[notify.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]  ;
    [UIView animateWithDuration:time animations:^{
        self.keyView.transform=CGAffineTransformIdentity;
    }];
}

7、發送消息

-(BOOL)textFieldShouldReturn:(UITextField *)textField{
    [textField resignFirstResponder];
    
    //發送消息
    
    //1 取出文本
    AppDelegate * delgate=[UIApplication sharedApplication].delegate;
    
    XMPPJID * jid=[XMPPJID jidWithString:self.fromJid];
    
    //初始化消息體
    XMPPMessage * message=[XMPPMessage messageWithType:@"chat" to:jid];
    [message addBody:self.ketf.text];
    
    //發送消息
    [delgate.stream sendElement:message];
    
    //將消息置空
    self.ketf.text=nil;
    return YES;
}

 

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作者： 傑瑞教育
出處： http://www.cnblogs.com/jerehedu/ 
本文版權歸煙台傑瑞教育科技有限公司和博客園共有，歡迎轉載，但未經作者同意必須保留此段聲明，且在文章頁面明顯位置給出原文連接，否則保留追究法律責任的權利。