XMPP接受发送消息

2019-11-14 18:39:10

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　　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

//消息存档@property(nonatomic,strong) XMPPMessageArchiving * messageArch;//消息存档存储模型@property(nonatomic,strong) XMPPMessageArchivingCoreDataStorage * messageStore;

4、在上面storyboard创建的控制器中，添加如下代码

AppDelegate * delgate=[UIapplication sharedApplication].delegate;        //初始化头像    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];        //设置图片模型    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];        //初始化数据存储  NSString *user=  [[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];        //初始化请求    NSFetchRequest * request=[[NSFetchRequest alloc] initWithEntityName:@"XMPPMessageArchiving_Message_CoreDataObject"];    request.predicate=[NSPredicate predicateWithFormat:@"bareJidStr=%@ and streamBareJidStr=%@",self.fromJid,user];            //定义排序    NSSortDescriptor * des=[NSSortDescriptor sortDescriptorWithKey:@"timestamp" ascending:YES];    [request setSortDescriptors:@[des]];        //获取上下文    NSManagedObjectContext *context=[delgate.messageStore mainThreadManagedObjectContext];        //初始化结果存储器    fetch=[[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:nil cacheName:nil];        //设置代理    fetch.delegate=self;        //开始查询    [fetch performFetch:nil];

5、创实现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"];    }            //设置头像    cell.image.image=self.meImage;    cell.selectionStyle=UITableViewCellSelectionStyleNone;    [cell setText:obj.body WithFlag:obj.isOutgoing ];    return cell;}

6、增加键盘控制

  [[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、发送消息

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